Gerald G. Briggs, BPharm, FCCP

The human pregnancy data reported for these 16 agents are very limited as only 8 of the drugs have this data. However, the 8 reports indicated that the use of these drugs was highly important for the mother and did not cause embryo/fetal harm.

• Acetylcysteine

The need for this antidote in a pregnant or lactating woman is most likely a rare requirement. However, the need for this agent does occur in women who have taken a potentially hepatic toxic dose of acetaminophen (e.g., Tylenol).

• Black widow spider antivenin

Only three reports of the use of this agent in a pregnant woman have been located. In each case, the symptoms from the spider bite did not respond to other therapies but did within 1 hour to the antivenin. There was no fetal harm in these cases.

• Deferasirox

This agent is an oral iron-chelating agent used for the treatment of chronic iron overload. Five case reports have described its use without causing any fetal harm.

• Deferoxamine

This agent has been used in more than 65 pregnancies for acute iron overdose or for transfusion-dependent thalassemia. No reports have observed adverse human developmental effects.

• Digoxin immune FAB (ovine)

Several reports have described the use of this agent in pregnancy. No fetal harm has been observed, but none of the reports involved exposure during organogenesis. However, in cases of digoxin overdose, the maternal benefits of therapy should take priority over the embryo/fetus.

• Dimercaprol

Although the limited animal data suggest low risk, there are no reports of the use of this drug in human organogenesis. The absence of data prevents an assessment of the embryo-fetal risk, but the maternal benefit and indirect embryo-fetal benefit appears to outweigh that risk.

• Edetate calcium disodium

This agent is used to treat acute or chronic lead poisoning. It is compatible in pregnancy because the maternal and possibly the embryo-fetal benefit appears to outweigh any unknown direct or indirect risks.

• Flumazenil

The use of this drug in the third trimester has been reported in two cases. Because the drug is indicated to reverse the effects of benzodiazepines on the central nervous system, the maternal benefit should far outweigh the unknown embryo-fetal risk.

• Glucagon

The embryo-fetal risks appear to be very low. Apparently, the drug does not cross the placenta.

• Glucarpidase

This drug is indicated for the treatment of methotrexate toxicity. There are no reports describing the use of this drug in pregnancy or during breastfeeding.

• Idarucizumab

This agent is a humanized monoclonal antibody fragment that is indicated for the reversal of the anticoagulant effects of dabigatran. No reports describing its use in human or animal pregnancy have been located. However, the maternal benefit appears to be high and probably outweighs the unknown risk to the embryo/fetus.

• Lanthanum carbonate

There are no human pregnancy or lactation data. It is used to reduce blood levels of phosphate in people with kidney disease.

• Pralidoxime

This agent relieves the paralysis of the muscles of respiration caused by an organophosphate pesticide or related compound. The human pregnancy experience is limited to two cases, one at 36 weeks and the other at 16 weeks, both of which delivered normal infants.

• Sapropterin

Four reports have described the use of sapropterin to lower blood phenylalanine levels in 31 pregnancies. There were no embryo-fetal adverse effects attributable to the drug.

• Sevelamer

Sevelamer is used to control high blood levels of phosphorus in people with chronic kidney disease who are on dialysis. There are no human pregnancy or breastfeeding data.

• Succimer

This drug is a heavy metal–chelating agent that is indicated for the treatment of lead poisoning in pediatric patients. The drug was teratogenic in rats and mice. Two reports described the use of the drug in two pregnant women for lead poisoning. It has also been used as an antidote for the treatment of arsenic, mercury, and cadmium poisoning in adults, but there have been no reports of this use in pregnant patients.

Mr. Briggs, now retired, was a clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

The human pregnancy data reported for these 16 agents are very limited as only 8 of the drugs have this data. However, the 8 reports indicated that the use of these drugs was highly important for the mother and did not cause embryo/fetal harm.

• Acetylcysteine

The need for this antidote in a pregnant or lactating woman is most likely a rare requirement. However, the need for this agent does occur in women who have taken a potentially hepatic toxic dose of acetaminophen (e.g., Tylenol).

• Black widow spider antivenin

Only three reports of the use of this agent in a pregnant woman have been located. In each case, the symptoms from the spider bite did not respond to other therapies but did within 1 hour to the antivenin. There was no fetal harm in these cases.

• Deferasirox

This agent is an oral iron-chelating agent used for the treatment of chronic iron overload. Five case reports have described its use without causing any fetal harm.

• Deferoxamine

This agent has been used in more than 65 pregnancies for acute iron overdose or for transfusion-dependent thalassemia. No reports have observed adverse human developmental effects.

• Digoxin immune FAB (ovine)

Several reports have described the use of this agent in pregnancy. No fetal harm has been observed, but none of the reports involved exposure during organogenesis. However, in cases of digoxin overdose, the maternal benefits of therapy should take priority over the embryo/fetus.

• Dimercaprol

Although the limited animal data suggest low risk, there are no reports of the use of this drug in human organogenesis. The absence of data prevents an assessment of the embryo-fetal risk, but the maternal benefit and indirect embryo-fetal benefit appears to outweigh that risk.

• Edetate calcium disodium

This agent is used to treat acute or chronic lead poisoning. It is compatible in pregnancy because the maternal and possibly the embryo-fetal benefit appears to outweigh any unknown direct or indirect risks.

• Flumazenil

The use of this drug in the third trimester has been reported in two cases. Because the drug is indicated to reverse the effects of benzodiazepines on the central nervous system, the maternal benefit should far outweigh the unknown embryo-fetal risk.

• Glucagon

The embryo-fetal risks appear to be very low. Apparently, the drug does not cross the placenta.

• Glucarpidase

This drug is indicated for the treatment of methotrexate toxicity. There are no reports describing the use of this drug in pregnancy or during breastfeeding.

• Idarucizumab

This agent is a humanized monoclonal antibody fragment that is indicated for the reversal of the anticoagulant effects of dabigatran. No reports describing its use in human or animal pregnancy have been located. However, the maternal benefit appears to be high and probably outweighs the unknown risk to the embryo/fetus.

• Lanthanum carbonate

There are no human pregnancy or lactation data. It is used to reduce blood levels of phosphate in people with kidney disease.

• Pralidoxime

This agent relieves the paralysis of the muscles of respiration caused by an organophosphate pesticide or related compound. The human pregnancy experience is limited to two cases, one at 36 weeks and the other at 16 weeks, both of which delivered normal infants.

• Sapropterin

Four reports have described the use of sapropterin to lower blood phenylalanine levels in 31 pregnancies. There were no embryo-fetal adverse effects attributable to the drug.

• Sevelamer

Sevelamer is used to control high blood levels of phosphorus in people with chronic kidney disease who are on dialysis. There are no human pregnancy or breastfeeding data.

• Succimer

This drug is a heavy metal–chelating agent that is indicated for the treatment of lead poisoning in pediatric patients. The drug was teratogenic in rats and mice. Two reports described the use of the drug in two pregnant women for lead poisoning. It has also been used as an antidote for the treatment of arsenic, mercury, and cadmium poisoning in adults, but there have been no reports of this use in pregnant patients.

Mr. Briggs, now retired, was a clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

The human pregnancy data reported for these 16 agents are very limited as only 8 of the drugs have this data. However, the 8 reports indicated that the use of these drugs was highly important for the mother and did not cause embryo/fetal harm.

• Acetylcysteine

The need for this antidote in a pregnant or lactating woman is most likely a rare requirement. However, the need for this agent does occur in women who have taken a potentially hepatic toxic dose of acetaminophen (e.g., Tylenol).

• Black widow spider antivenin

Only three reports of the use of this agent in a pregnant woman have been located. In each case, the symptoms from the spider bite did not respond to other therapies but did within 1 hour to the antivenin. There was no fetal harm in these cases.

• Deferasirox

This agent is an oral iron-chelating agent used for the treatment of chronic iron overload. Five case reports have described its use without causing any fetal harm.

• Deferoxamine

This agent has been used in more than 65 pregnancies for acute iron overdose or for transfusion-dependent thalassemia. No reports have observed adverse human developmental effects.

• Digoxin immune FAB (ovine)

Several reports have described the use of this agent in pregnancy. No fetal harm has been observed, but none of the reports involved exposure during organogenesis. However, in cases of digoxin overdose, the maternal benefits of therapy should take priority over the embryo/fetus.

• Dimercaprol

Although the limited animal data suggest low risk, there are no reports of the use of this drug in human organogenesis. The absence of data prevents an assessment of the embryo-fetal risk, but the maternal benefit and indirect embryo-fetal benefit appears to outweigh that risk.

• Edetate calcium disodium

This agent is used to treat acute or chronic lead poisoning. It is compatible in pregnancy because the maternal and possibly the embryo-fetal benefit appears to outweigh any unknown direct or indirect risks.

• Flumazenil

The use of this drug in the third trimester has been reported in two cases. Because the drug is indicated to reverse the effects of benzodiazepines on the central nervous system, the maternal benefit should far outweigh the unknown embryo-fetal risk.

• Glucagon

The embryo-fetal risks appear to be very low. Apparently, the drug does not cross the placenta.

• Glucarpidase

This drug is indicated for the treatment of methotrexate toxicity. There are no reports describing the use of this drug in pregnancy or during breastfeeding.

• Idarucizumab

This agent is a humanized monoclonal antibody fragment that is indicated for the reversal of the anticoagulant effects of dabigatran. No reports describing its use in human or animal pregnancy have been located. However, the maternal benefit appears to be high and probably outweighs the unknown risk to the embryo/fetus.

• Lanthanum carbonate

There are no human pregnancy or lactation data. It is used to reduce blood levels of phosphate in people with kidney disease.

• Pralidoxime

This agent relieves the paralysis of the muscles of respiration caused by an organophosphate pesticide or related compound. The human pregnancy experience is limited to two cases, one at 36 weeks and the other at 16 weeks, both of which delivered normal infants.

• Sapropterin

Four reports have described the use of sapropterin to lower blood phenylalanine levels in 31 pregnancies. There were no embryo-fetal adverse effects attributable to the drug.

• Sevelamer

Sevelamer is used to control high blood levels of phosphorus in people with chronic kidney disease who are on dialysis. There are no human pregnancy or breastfeeding data.

• Succimer

This drug is a heavy metal–chelating agent that is indicated for the treatment of lead poisoning in pediatric patients. The drug was teratogenic in rats and mice. Two reports described the use of the drug in two pregnant women for lead poisoning. It has also been used as an antidote for the treatment of arsenic, mercury, and cadmium poisoning in adults, but there have been no reports of this use in pregnant patients.

Mr. Briggs, now retired, was a clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2021, the Food and Drug Administration approved 50 new drugs, but 24 will not be described here because they would probably not be used in pregnancy. The 24 are Aduhelm (aducanumab) to treat Alzheimer’s disease; Azstarys (serdexmethylphenidate and dexmethylphenidate), a combination CNS stimulant indicated for the treatment of ADHD; Cabenuva (cabotegravir and rilpivirine) to treat HIV; Voxzogo (vosoritide) for children with achondroplasia and open epiphyses; Qelbree (viloxazine) used in children aged 6-17 years to treat ADHD; and Pylarify (piflufolastat) for prostate cancer. Other anticancer drugs that will not be covered are Cosela (trilaciclib), Cytalux (pafolacianine), Exkivity (mobocertinib); Fotivda (tivozanib), Jemperli (dostarlimab-gxly), Lumakras (sotorasib), Pepaxto (melphalan flufenamide), Rybrevant (amivantamab-vmjw), Rylaze (asparaginase erwinia chrysanthemi), Scemblix (asciminib), Tepmetko (tepotinib), Tivdak (tisotumab vedotin-tftv), Truseltiq (infigratinib), Ukoniq (umbralisib), and Zynlonta (loncastuximab tesirine-lpyl).

Skytrofa (lonapegsomatropin-tcgd) will not be described below because it is indicated to treat short stature and is unlikely to be used in pregnancy. Nextstellis (drospirenone and estetrol) is used to prevent pregnancy.

Typically, for new drugs there will be no published reports describing their use in pregnant women. That information will come much later. In the sections below, the indications, effects on pregnant animals, and the potential for harm of a fetus/embryo are described. However, the relevance of animal data to human pregnancies is not great.

Adbry (tralokinumab) (molecular weight [MW], 147 kilodaltons), is indicated for the treatment of moderate to severe atopic dermatitis in adult patients whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. The drug did not harm fetal monkeys at doses that were 10 times the maximum recommended human dose.

Besremi (ropeginterferon alfa-2b-njft) (MW, 60 kDa) is an interferon alfa-2b indicated for the treatment of adults with polycythemia vera. It is given by subcutaneous injection every 2 weeks. Animal studies assessing reproductive toxicity have not been conducted. The manufacturer states that the drug may cause fetal harm and should be assumed to have abortifacient potential.

Brexafemme (ibrexafungerp) (MW, 922) is indicated for the treatment of vulvovaginal candidiasis. The drug was teratogenic in pregnant rabbits but not in pregnant rats. The manufacturer recommends females with reproductive potential should use effective contraception during treatment and for 4 days after the final dose.

Bylvay (odevixibat) (MW unknown) is indicated for the treatment of pruritus in patients aged 3 months and older. There are no human data regarding its use in pregnant women. The drug was teratogenic in pregnant rabbits. Although there are no data, the drug has low absorption following oral administration and breastfeeding is not expected to result in exposure of the infant.

Empaveli (pegcetacoplan) (MW, 44 kDa) is used to treat paroxysmal nocturnal hemoglobinuria. When the drug was given to pregnant cynomolgus monkeys there was an increase in abortions and stillbirths.

Evkeeza (evinacumab-dgnb) (MW, 146k) is used to treat homozygous familial hypercholesterolemia. The drug was teratogenic in rabbits but not rats.

Fexinidazole (MW not specified) is indicated to treat human African trypanosomiasis caused by the parasite Trypanosoma brucei gambiense. Additional information not available.

Kerendia (finerenone) (MW, 378), is indicated to reduce the risk of kidney and heart complications in chronic kidney disease associated with type 2 diabetes. The drug was teratogenic in rats.

Korsuva (difelikefalin) (MW, 679) is a kappa opioid–receptor agonist indicated for the treatment of moderate to severe pruritus associated with chronic kidney disease in adults undergoing hemodialysis. No adverse effects were observed in pregnant rats and rabbits. The limited human data on use of Korsuva in pregnant women are not sufficient to evaluate a drug associated risk for major birth defects or miscarriage.

Leqvio (inclisiran) (MW, 17,285) is indicated to treat heterozygous familial hypercholesterolemia or clinical atherosclerotic cardiovascular disease as an add-on therapy. The drug was not teratogenic in rats and rabbits.

Livmarli (maralixibat) (MW, 710) is indicated for the treatment of cholestatic pruritus associated with Alagille syndrome. Because systemic absorption is low, the recommended clinical dose is not expected to result in measurable fetal exposure. No effects on fetal rats were observed.

Livtencity (maribavir) (MW, 376) is used to treat posttransplant cytomegalovirus infection that has not responded to other treatment. Embryo/fetal survival was reduced in rats but not in rabbits at doses less then the human dose.

Lupkynis (voclosporin) (MW, 1,215) is used to treat nephritis. Avoid use of Lupkynis in pregnant women because of the alcohol content of the drug formulation. The drug was embryocidal and feticidal in rats and rabbits but with no treatment-related fetal malformations or variations.

Lybalvi (olanzapine and samidorphan) (MW, 312 and 505) is a combination drug used to treat schizophrenia and bipolar disorder. It was fetal toxic in pregnant rats and rabbits but with no evidence of malformations. There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to atypical antipsychotics, including this drug, during pregnancy. Health care providers are encouraged to register patients by contacting the National Pregnancy Registry for Atypical Antipsychotics at 1-866-961-2388 or visit the Reproductive Psychiatry Resource and Information Center of the MGH Center for Women’s Mental Health.

Nexviazyme (avalglucosidase alfa-ngpt) (MW, 124k) is a hydrolytic lysosomal glycogen-specific enzyme indicated for the treatment of patients aged 1 year and older with late-onset Pompe disease. The drug was not teratogenic in mice and rabbits.

Nulibry (fosdenopterin) (MW, 480) is used to reduce the risk of mortality in molybdenum cofactor deficiency type A. Studies have not been conducted in pregnant animals.

Ponvory (ponesimod) (MW, 461) is used to treat relapsing forms of multiple sclerosis. The drug caused severe adverse effects in pregnant rats and rabbits.

Qulipta (atogepant) (MW, 604) is indicated to prevent episodic migraines. It is embryo/fetal toxic in rats and rabbits.

Saphnelo (anifrolumab-fnia) (MW, 148k) is used to treat moderate to severe systemic lupus erythematosus along with standard therapy. In pregnant cynomolgus monkeys, there was no evidence of embryotoxicity or fetal malformations with exposures up to approximately 28 times the exposure at the maximum recommended human dose.

Tavneos (avacopan) (MW, 582) is indicated to treat severe active antineutrophil cytoplasmic autoantibody–associated vasculitis in combination with standard therapy including glucocorticoids. There appears to be an increased risk for hepatotoxicity. The drug caused no defects in hamsters and rabbits, but in rabbits there was an increase in abortions.

Tezspire (tezepelumab-ekko) (MW, 147k) is indicated to treat severe asthma as an add-on maintenance therapy. No adverse fetal effects were observed in pregnant cynomolgus monkeys.

Verquvo (vericiguat) (MW, 426) is used to mitigate the risk of cardiovascular death and hospitalization for chronic heart failure. The drug was teratogenic in pregnant rabbits but not rats.

Vyvgart (efgartigimod alfa-fcab) (MW, 54k) is indicated to treat generalized myasthenia gravis. The drug did not cause birth defects in rats and rabbits.

Welireg (belzutifan) (MW, 383) is used to treat von Hippel–Lindau disease. In pregnant rats, the drug caused embryo-fetal lethality, reduced fetal body weight, and caused fetal skeletal malformations at maternal exposures of at least 0.2 times the human exposures.

Zegalogue (dasiglucagon) (MW, 3,382) is used to treat severe hypoglycemia. The drug did not cause birth defects in pregnant rats and rabbits.
 

Breastfeeding

It is not known if the above drugs will be in breast milk, but the safest course for an infant is to not breast feed if the mother is taking any of the above drugs.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2021, the Food and Drug Administration approved 50 new drugs, but 24 will not be described here because they would probably not be used in pregnancy. The 24 are Aduhelm (aducanumab) to treat Alzheimer’s disease; Azstarys (serdexmethylphenidate and dexmethylphenidate), a combination CNS stimulant indicated for the treatment of ADHD; Cabenuva (cabotegravir and rilpivirine) to treat HIV; Voxzogo (vosoritide) for children with achondroplasia and open epiphyses; Qelbree (viloxazine) used in children aged 6-17 years to treat ADHD; and Pylarify (piflufolastat) for prostate cancer. Other anticancer drugs that will not be covered are Cosela (trilaciclib), Cytalux (pafolacianine), Exkivity (mobocertinib); Fotivda (tivozanib), Jemperli (dostarlimab-gxly), Lumakras (sotorasib), Pepaxto (melphalan flufenamide), Rybrevant (amivantamab-vmjw), Rylaze (asparaginase erwinia chrysanthemi), Scemblix (asciminib), Tepmetko (tepotinib), Tivdak (tisotumab vedotin-tftv), Truseltiq (infigratinib), Ukoniq (umbralisib), and Zynlonta (loncastuximab tesirine-lpyl).

Skytrofa (lonapegsomatropin-tcgd) will not be described below because it is indicated to treat short stature and is unlikely to be used in pregnancy. Nextstellis (drospirenone and estetrol) is used to prevent pregnancy.

Typically, for new drugs there will be no published reports describing their use in pregnant women. That information will come much later. In the sections below, the indications, effects on pregnant animals, and the potential for harm of a fetus/embryo are described. However, the relevance of animal data to human pregnancies is not great.

Adbry (tralokinumab) (molecular weight [MW], 147 kilodaltons), is indicated for the treatment of moderate to severe atopic dermatitis in adult patients whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. The drug did not harm fetal monkeys at doses that were 10 times the maximum recommended human dose.

Besremi (ropeginterferon alfa-2b-njft) (MW, 60 kDa) is an interferon alfa-2b indicated for the treatment of adults with polycythemia vera. It is given by subcutaneous injection every 2 weeks. Animal studies assessing reproductive toxicity have not been conducted. The manufacturer states that the drug may cause fetal harm and should be assumed to have abortifacient potential.

Brexafemme (ibrexafungerp) (MW, 922) is indicated for the treatment of vulvovaginal candidiasis. The drug was teratogenic in pregnant rabbits but not in pregnant rats. The manufacturer recommends females with reproductive potential should use effective contraception during treatment and for 4 days after the final dose.

Bylvay (odevixibat) (MW unknown) is indicated for the treatment of pruritus in patients aged 3 months and older. There are no human data regarding its use in pregnant women. The drug was teratogenic in pregnant rabbits. Although there are no data, the drug has low absorption following oral administration and breastfeeding is not expected to result in exposure of the infant.

Empaveli (pegcetacoplan) (MW, 44 kDa) is used to treat paroxysmal nocturnal hemoglobinuria. When the drug was given to pregnant cynomolgus monkeys there was an increase in abortions and stillbirths.

Evkeeza (evinacumab-dgnb) (MW, 146k) is used to treat homozygous familial hypercholesterolemia. The drug was teratogenic in rabbits but not rats.

Fexinidazole (MW not specified) is indicated to treat human African trypanosomiasis caused by the parasite Trypanosoma brucei gambiense. Additional information not available.

Kerendia (finerenone) (MW, 378), is indicated to reduce the risk of kidney and heart complications in chronic kidney disease associated with type 2 diabetes. The drug was teratogenic in rats.

Korsuva (difelikefalin) (MW, 679) is a kappa opioid–receptor agonist indicated for the treatment of moderate to severe pruritus associated with chronic kidney disease in adults undergoing hemodialysis. No adverse effects were observed in pregnant rats and rabbits. The limited human data on use of Korsuva in pregnant women are not sufficient to evaluate a drug associated risk for major birth defects or miscarriage.

Leqvio (inclisiran) (MW, 17,285) is indicated to treat heterozygous familial hypercholesterolemia or clinical atherosclerotic cardiovascular disease as an add-on therapy. The drug was not teratogenic in rats and rabbits.

Livmarli (maralixibat) (MW, 710) is indicated for the treatment of cholestatic pruritus associated with Alagille syndrome. Because systemic absorption is low, the recommended clinical dose is not expected to result in measurable fetal exposure. No effects on fetal rats were observed.

Livtencity (maribavir) (MW, 376) is used to treat posttransplant cytomegalovirus infection that has not responded to other treatment. Embryo/fetal survival was reduced in rats but not in rabbits at doses less then the human dose.

Lupkynis (voclosporin) (MW, 1,215) is used to treat nephritis. Avoid use of Lupkynis in pregnant women because of the alcohol content of the drug formulation. The drug was embryocidal and feticidal in rats and rabbits but with no treatment-related fetal malformations or variations.

Lybalvi (olanzapine and samidorphan) (MW, 312 and 505) is a combination drug used to treat schizophrenia and bipolar disorder. It was fetal toxic in pregnant rats and rabbits but with no evidence of malformations. There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to atypical antipsychotics, including this drug, during pregnancy. Health care providers are encouraged to register patients by contacting the National Pregnancy Registry for Atypical Antipsychotics at 1-866-961-2388 or visit the Reproductive Psychiatry Resource and Information Center of the MGH Center for Women’s Mental Health.

Nexviazyme (avalglucosidase alfa-ngpt) (MW, 124k) is a hydrolytic lysosomal glycogen-specific enzyme indicated for the treatment of patients aged 1 year and older with late-onset Pompe disease. The drug was not teratogenic in mice and rabbits.

Nulibry (fosdenopterin) (MW, 480) is used to reduce the risk of mortality in molybdenum cofactor deficiency type A. Studies have not been conducted in pregnant animals.

Ponvory (ponesimod) (MW, 461) is used to treat relapsing forms of multiple sclerosis. The drug caused severe adverse effects in pregnant rats and rabbits.

Qulipta (atogepant) (MW, 604) is indicated to prevent episodic migraines. It is embryo/fetal toxic in rats and rabbits.

Saphnelo (anifrolumab-fnia) (MW, 148k) is used to treat moderate to severe systemic lupus erythematosus along with standard therapy. In pregnant cynomolgus monkeys, there was no evidence of embryotoxicity or fetal malformations with exposures up to approximately 28 times the exposure at the maximum recommended human dose.

Tavneos (avacopan) (MW, 582) is indicated to treat severe active antineutrophil cytoplasmic autoantibody–associated vasculitis in combination with standard therapy including glucocorticoids. There appears to be an increased risk for hepatotoxicity. The drug caused no defects in hamsters and rabbits, but in rabbits there was an increase in abortions.

Tezspire (tezepelumab-ekko) (MW, 147k) is indicated to treat severe asthma as an add-on maintenance therapy. No adverse fetal effects were observed in pregnant cynomolgus monkeys.

Verquvo (vericiguat) (MW, 426) is used to mitigate the risk of cardiovascular death and hospitalization for chronic heart failure. The drug was teratogenic in pregnant rabbits but not rats.

Vyvgart (efgartigimod alfa-fcab) (MW, 54k) is indicated to treat generalized myasthenia gravis. The drug did not cause birth defects in rats and rabbits.

Welireg (belzutifan) (MW, 383) is used to treat von Hippel–Lindau disease. In pregnant rats, the drug caused embryo-fetal lethality, reduced fetal body weight, and caused fetal skeletal malformations at maternal exposures of at least 0.2 times the human exposures.

Zegalogue (dasiglucagon) (MW, 3,382) is used to treat severe hypoglycemia. The drug did not cause birth defects in pregnant rats and rabbits.
 

Breastfeeding

It is not known if the above drugs will be in breast milk, but the safest course for an infant is to not breast feed if the mother is taking any of the above drugs.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2021, the Food and Drug Administration approved 50 new drugs, but 24 will not be described here because they would probably not be used in pregnancy. The 24 are Aduhelm (aducanumab) to treat Alzheimer’s disease; Azstarys (serdexmethylphenidate and dexmethylphenidate), a combination CNS stimulant indicated for the treatment of ADHD; Cabenuva (cabotegravir and rilpivirine) to treat HIV; Voxzogo (vosoritide) for children with achondroplasia and open epiphyses; Qelbree (viloxazine) used in children aged 6-17 years to treat ADHD; and Pylarify (piflufolastat) for prostate cancer. Other anticancer drugs that will not be covered are Cosela (trilaciclib), Cytalux (pafolacianine), Exkivity (mobocertinib); Fotivda (tivozanib), Jemperli (dostarlimab-gxly), Lumakras (sotorasib), Pepaxto (melphalan flufenamide), Rybrevant (amivantamab-vmjw), Rylaze (asparaginase erwinia chrysanthemi), Scemblix (asciminib), Tepmetko (tepotinib), Tivdak (tisotumab vedotin-tftv), Truseltiq (infigratinib), Ukoniq (umbralisib), and Zynlonta (loncastuximab tesirine-lpyl).

Skytrofa (lonapegsomatropin-tcgd) will not be described below because it is indicated to treat short stature and is unlikely to be used in pregnancy. Nextstellis (drospirenone and estetrol) is used to prevent pregnancy.

Typically, for new drugs there will be no published reports describing their use in pregnant women. That information will come much later. In the sections below, the indications, effects on pregnant animals, and the potential for harm of a fetus/embryo are described. However, the relevance of animal data to human pregnancies is not great.

Adbry (tralokinumab) (molecular weight [MW], 147 kilodaltons), is indicated for the treatment of moderate to severe atopic dermatitis in adult patients whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. The drug did not harm fetal monkeys at doses that were 10 times the maximum recommended human dose.

Besremi (ropeginterferon alfa-2b-njft) (MW, 60 kDa) is an interferon alfa-2b indicated for the treatment of adults with polycythemia vera. It is given by subcutaneous injection every 2 weeks. Animal studies assessing reproductive toxicity have not been conducted. The manufacturer states that the drug may cause fetal harm and should be assumed to have abortifacient potential.

Brexafemme (ibrexafungerp) (MW, 922) is indicated for the treatment of vulvovaginal candidiasis. The drug was teratogenic in pregnant rabbits but not in pregnant rats. The manufacturer recommends females with reproductive potential should use effective contraception during treatment and for 4 days after the final dose.

Bylvay (odevixibat) (MW unknown) is indicated for the treatment of pruritus in patients aged 3 months and older. There are no human data regarding its use in pregnant women. The drug was teratogenic in pregnant rabbits. Although there are no data, the drug has low absorption following oral administration and breastfeeding is not expected to result in exposure of the infant.

Empaveli (pegcetacoplan) (MW, 44 kDa) is used to treat paroxysmal nocturnal hemoglobinuria. When the drug was given to pregnant cynomolgus monkeys there was an increase in abortions and stillbirths.

Evkeeza (evinacumab-dgnb) (MW, 146k) is used to treat homozygous familial hypercholesterolemia. The drug was teratogenic in rabbits but not rats.

Fexinidazole (MW not specified) is indicated to treat human African trypanosomiasis caused by the parasite Trypanosoma brucei gambiense. Additional information not available.

Kerendia (finerenone) (MW, 378), is indicated to reduce the risk of kidney and heart complications in chronic kidney disease associated with type 2 diabetes. The drug was teratogenic in rats.

Korsuva (difelikefalin) (MW, 679) is a kappa opioid–receptor agonist indicated for the treatment of moderate to severe pruritus associated with chronic kidney disease in adults undergoing hemodialysis. No adverse effects were observed in pregnant rats and rabbits. The limited human data on use of Korsuva in pregnant women are not sufficient to evaluate a drug associated risk for major birth defects or miscarriage.

Leqvio (inclisiran) (MW, 17,285) is indicated to treat heterozygous familial hypercholesterolemia or clinical atherosclerotic cardiovascular disease as an add-on therapy. The drug was not teratogenic in rats and rabbits.

Livmarli (maralixibat) (MW, 710) is indicated for the treatment of cholestatic pruritus associated with Alagille syndrome. Because systemic absorption is low, the recommended clinical dose is not expected to result in measurable fetal exposure. No effects on fetal rats were observed.

Livtencity (maribavir) (MW, 376) is used to treat posttransplant cytomegalovirus infection that has not responded to other treatment. Embryo/fetal survival was reduced in rats but not in rabbits at doses less then the human dose.

Lupkynis (voclosporin) (MW, 1,215) is used to treat nephritis. Avoid use of Lupkynis in pregnant women because of the alcohol content of the drug formulation. The drug was embryocidal and feticidal in rats and rabbits but with no treatment-related fetal malformations or variations.

Lybalvi (olanzapine and samidorphan) (MW, 312 and 505) is a combination drug used to treat schizophrenia and bipolar disorder. It was fetal toxic in pregnant rats and rabbits but with no evidence of malformations. There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to atypical antipsychotics, including this drug, during pregnancy. Health care providers are encouraged to register patients by contacting the National Pregnancy Registry for Atypical Antipsychotics at 1-866-961-2388 or visit the Reproductive Psychiatry Resource and Information Center of the MGH Center for Women’s Mental Health.

Nexviazyme (avalglucosidase alfa-ngpt) (MW, 124k) is a hydrolytic lysosomal glycogen-specific enzyme indicated for the treatment of patients aged 1 year and older with late-onset Pompe disease. The drug was not teratogenic in mice and rabbits.

Nulibry (fosdenopterin) (MW, 480) is used to reduce the risk of mortality in molybdenum cofactor deficiency type A. Studies have not been conducted in pregnant animals.

Ponvory (ponesimod) (MW, 461) is used to treat relapsing forms of multiple sclerosis. The drug caused severe adverse effects in pregnant rats and rabbits.

Qulipta (atogepant) (MW, 604) is indicated to prevent episodic migraines. It is embryo/fetal toxic in rats and rabbits.

Saphnelo (anifrolumab-fnia) (MW, 148k) is used to treat moderate to severe systemic lupus erythematosus along with standard therapy. In pregnant cynomolgus monkeys, there was no evidence of embryotoxicity or fetal malformations with exposures up to approximately 28 times the exposure at the maximum recommended human dose.

Tavneos (avacopan) (MW, 582) is indicated to treat severe active antineutrophil cytoplasmic autoantibody–associated vasculitis in combination with standard therapy including glucocorticoids. There appears to be an increased risk for hepatotoxicity. The drug caused no defects in hamsters and rabbits, but in rabbits there was an increase in abortions.

Tezspire (tezepelumab-ekko) (MW, 147k) is indicated to treat severe asthma as an add-on maintenance therapy. No adverse fetal effects were observed in pregnant cynomolgus monkeys.

Verquvo (vericiguat) (MW, 426) is used to mitigate the risk of cardiovascular death and hospitalization for chronic heart failure. The drug was teratogenic in pregnant rabbits but not rats.

Vyvgart (efgartigimod alfa-fcab) (MW, 54k) is indicated to treat generalized myasthenia gravis. The drug did not cause birth defects in rats and rabbits.

Welireg (belzutifan) (MW, 383) is used to treat von Hippel–Lindau disease. In pregnant rats, the drug caused embryo-fetal lethality, reduced fetal body weight, and caused fetal skeletal malformations at maternal exposures of at least 0.2 times the human exposures.

Zegalogue (dasiglucagon) (MW, 3,382) is used to treat severe hypoglycemia. The drug did not cause birth defects in pregnant rats and rabbits.
 

Breastfeeding

It is not known if the above drugs will be in breast milk, but the safest course for an infant is to not breast feed if the mother is taking any of the above drugs.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2020, the Food and Drug Administration approved 53 new drugs for humans. One of these agents, Annovera (segesterone and ethinyl estradiol), is a vaginal ring to prevent pregnancy and is not relevant in this article. A second drug, Asparlas (calaspargase pegol), indicated to treat acute lymphoblastic leukemia, has not yet been released by its manufacturer. Orgovyx (relugolix) is used for prostate cancer and Lampit (nifurtimox) is drug used in children – neither of these two agents will be covered. The remaining 49 are covered below. The agents with molecular weights less than 1,000 probably cross the placenta in the first half of pregnancy, but nearly all, regardless of MW, will cross in the second half of pregnancy.

No human pregnancy data for these agents has been found, but there are five drugs included in pregnancy registries. It will take some time before the outcomes of these drugs are published. The routine absence of pregnancy data for most drugs was pointed out in an article that I coauthored, “Should pregnant women be included in phase 4 clinical drug trials?”. The article makes a strong argument for including some pregnant women in these trials.
 

Anti-infectives

Artesunate (384)

The drug appears low risk when used in the second and third trimesters. There is inadequate information regarding its use in the first trimester, so the safest course for the embryo appears to be avoiding its use during this period. A single intravenous dose given to rats early in gestation resulted in embryolethality.

Ebanga (ansuvimab) (147,000)

Studies on its use in pregnant animals have not been conducted.

Inmazeb (atoltivimab, maftivimab, odesivimab) (144,000-146,000)

Inmazeb is a combination of the three agents. Studies on its use in pregnant animals have not been conducted.

Veklury (remdesivir) (603)

Veklury is indicated for the treatment of pregnant women hospitalized with COVID-19 who are at risk for serious morbidity and mortality. The drug should be used during pregnancy only if the potential benefit justifies the potential risk for the mother and the fetus.

Antineoplastics

Ayvakit (avapritinib) (499)

The drug may cause fetal harm. The drug was teratogenic in animals.

Blenrep (belantamab mafodotin-blmf) (152,000)

A B-cell maturation antigen, it is indicated for the treatment of multiple myeloma. No human or animal pregnancy data have been located.

Danyelza (naxitamab-gqgk) (144,000)

This agent is used for the treatment of neuroblastoma. Based on its mechanism of action it may cause fetal harm if used in pregnancy.

Gavreto (pralsetinib) (534)

Gavreto is indicated for the treatment of small cell lung cancer. It may cause embryo-fetal harm if used in pregnancy.

Inqovi (cedazuridine + decitabine) (268,228)

The drug combination can cause fetal harm in human pregnancy. It is toxic in pregnant animals.

Margenza (margetuximab-cmkb) (149,000)

Although there are no data on the use of this drug in human pregnancy, the findings in animals and mechanism of action suggest that it will cause fetal harm.

Monjuvi (tafasitamab-cxix) (150,000)

This drug is a cytolytic antibody that is indicated in combination with lenalidomide. The combination may cause fetal harm.

Pemazyre (pemigatinib) (488)

It is indicated for the treatment of cholangiocarcinoma. In an animal study, the drug caused fetal defects, fetal growth retardation, and embryo-fetal death at maternal exposures lower than the human exposure.

Qinlock (ripretinib) (510)

This drug is used for the treatment of patients with advanced gastrointestinal stromal tumor. The drug was teratogenic in pregnant animals.

Retevmo (selpercatinib) (526)

This is a kinase inhibitor used for the treatment of small cell lung cancer. The drug is teratogenic in animals.

Sarclisa (isatuximab-irfc) (148,000)This drug is used in combination with pomalidomide and dexamethasone. The combination would probably cause major toxicity in an embryo or fetus.

Tabrecta (capmatinib) (412 – free base)Capmatinib is a kinase inhibitor used for the treatment of metastatic non–small cell lung cancer. It is teratogenic in animals.

Tazverik (tazemetostat) (654)Tazemetostat is indicated for the treatment of epithelioid sarcoma and follicular lymphoma, The drug is teratogenic in animals.

Trodelvy (sacituzumab govitecan-hziy) (1,602)This agent is used for the treatment of breast cancer. The drug has not been tested in pregnant animals. However, according to the manufacturer, there is a high possibility of human teratogenicity if it is given to a pregnant woman.

Tukysa (tucatinib) (481)

Tukysa is a tyrosine kinase inhibitor that is used in combination with trastuzumab and capecitabine for the treatment of breast cancer. The drug is teratogenic in animals.

Zeposia (ozanimod) (441)

Zeposia is indicated for the treatment of multiple sclerosis. The drug takes about 3 months to eliminate from the body. The drug is teratogenic in animals.

Zepzelca (lurbinectedin) (785)

This agent is used for the treatment of metastatic small cell lung cancer. The drug is teratogenic in animals.
 

Antiemetics

Barhemsys (amisulpride) (369)

This agent is Indicated to prevent nausea and vomiting. Animal data suggest low risk of embryo/fetal birth defects.

Antimigraine

Nurtec (rimegepant) (611)

Nurtec is indicated for acute treatment of migraine. Development toxicity was not observed in animals given doses similar to those used in humans.

Vyepti (eptinezumab-jjmr) (143,000)

A humanized monoclonal antibody that is given every 3 months to prevent migraine. There was no embryo-fetal harm in animals given the drug.
 

CNS

Byfavo (remimazolam) (493 – free base)

This drug is indicated for procedural sedation in adults undergoing procedures lasting 30 minutes or less. No defects were observed in animals.
 

Diagnostics

Cerianna (fluoroestradiol F 18) (289)

It is indicated for use with PET for characterization of estrogen receptor status in patients with ER-positive breast cancer. It has the potential to cause fetal harm depending on the fetal stage of development and the magnitude of radiation dose. There are no data on its use in pregnant women or animals.

Detectnet (copper CU-64 dotatate) (1,497)

All radiopharmaceuticals have the potential to cause fetal harm depending on the fetal stage of development and the magnitude of the radiation dose. There are no pregnancy data in humans or animals

Miscellaneous

Dojolvi (triheptanoin) (429)

This agent is indicated as a source of calories and fatty acids for the treatment of pediatric and adult patients with molecularly confirmed long-chain fatty acid oxidation disorders. Advise patients that there is a pregnancy safety study that collects pregnancy outcome data in women taking Dojolvi during pregnancy. Pregnant patients can enroll in the study by calling 1-888-756-8657.

Enspryng (satralizumab-mwge) (143,000)

It is indicated for the treatment of neuromyelitis optica spectrum disorder in adult patients who are anti–aquaporin-4 (AQP4) antibody positive. No information is available on the risks, if any, in pregnancy. No adverse effects on maternal or fetal development were observed in pregnant monkeys and their offspring.

Evrysdi (risdiplam) (401)

This is a prescription medicine used to treat spinal muscular atrophy in adults and children aged 2 months and older. In pregnant animals the drug caused adverse effects on fetal development.

Gemtesa (vibegron) (445)

Gemtesa is used in adults to treat the symptoms of overactive bladder. The drug had no adverse effects on pregnant animals.

Imcivree (setmelanotide) (1,117)

This drug is indicated for chronic weight management in adult and pediatric patients aged 6 years and older with obesity because of proopiomelanocortin, proprotein convertase subtilisin/kexin type 1, or leptin receptor deficiency. The drug was not embryo toxic in animals.

Isturisa (osilodrostat) (325)

Isturisa is a cortisol synthesis inhibitor indicated for the treatment of adult patients with Cushing’s disease. No adverse fetal effects were observed in pregnant animals.

Klisyri (tirbanibulin) (431)

Tirbanibulin ointment is a microtubule inhibitor that is used to treat actinic keratosis. Information on its effects in pregnancy is not available.

Koselugo (selumetinib) (556)

This is a kinase inhibitor indicated for the treatment of pediatric patients aged 2 years and older. The drug is toxic in pregnant animals but its effects in human pregnancy are not known.

Nexletol (bempedoic acid) (344)

Nexletol is indicated as an adjunct to diet and maximally tolerated statin therapy for the treatment of adults with heterozygous familial hypercholesterolemia or established atherosclerotic cardiovascular disease who require additional lowering of LDL cholesterol. The drug was not teratogenic in animals. Discontinue Nexletol when pregnancy is recognized unless the benefits of therapy outweigh the potential risks to the fetus.

Olinvyk (oliceridine) (503)

Olinvyk injection is indicated in adults for the management of acute pain severe enough to require an intravenous opioid analgesic. Prolonged use of Olinvyk during pregnancy can result in neonatal opioid withdrawal syndrome. The drug was not teratogenic in animals.

Ongentys (opicapone) (413)

Ongentys is indicated as adjunctive treatment to levodopa/carbidopa in patients with Parkinson’s disease experiencing “off” episodes. The drug was teratogenic in rabbits but not in rats.

Orladeyo (berotralstat) (635)

This drug is a plasma kallikrein inhibitor indicated for prophylaxis to prevent attacks of hereditary angioedema. It was not teratogenic in animals.

Oxlumo (lumasiran) (17,286)

Oxlumo is a HAO1-directed small interfering ribonucleic acid indicated for the treatment of primary hyperoxaluria type 1 to lower urinary oxalate levels. No adverse effects on pregnancy or embryo-fetal development related to the drug were observed in animals.

Pizensy (lactitol) (344)

Lactitol is minimally absorbed systemically following oral administration. It is unknown whether maternal use will result in fetal exposure to the drug. No effects on embryo-fetal development were observed in animals at doses much higher than the maximum recommended human dosage.

Rukobia (fostemsavir) (705; 584 for free acid)

This drug is an HIV-1–directed attachment inhibitor, in combination with other antiretrovirals. There is a pregnancy exposure registry that monitors pregnancy outcomes in individuals exposed to the drug during pregnancy. Health care providers are encouraged to register patients by calling the Antiretroviral Pregnancy Registry at 1-800-258-4263.

Sogroya (somapacitan-beco) (23,305)

This is a human growth hormone analog indicated for replacement of endogenous growth hormone in adults with growth hormone deficiency. The drug was not teratogenic in animals.

Tepezza (teprotumumab-trbw) (148,000)

Drug is indicated for the treatment of thyroid eye disease. The drug was teratogenic in cynomolgus monkeys. The manufacturer states that because of the risk, the drug should not be used in pregnancy.

Tauvid (flortaucipir F-18) (262)

This drug is indicated for use with PET imaging of the brain to evaluate for Alzheimer’s disease. It is a radioactive drug and should not be used in pregnant women.

Uplizna (inebilizumab-cdon) (149,000)

Uplizna is indicated for the treatment of neuromyelitis optica spectrum disorder in adult patients who are anti-AQP4 antibody positive. It is a humanized IgG1 monoclonal antibody and immunoglobulins are known to cross the placental barrier. Based on animal data, the drug can cause fetal harm because of B-cell lymphopenia and reduce antibody response in offspring exposed to the drug. Women of childbearing potential should use contraception while receiving Uplizna and for 6 months after the last dose.

Winlevi (clascoterone) (403)

This cream is an androgen receptor inhibitor that is indicated for the topical treatment of acne vulgaris in patients aged 12 years and older. Subcutaneous use in animals was associated with fetal defects.

Xeglyze (abametapir) (1,840)

Xeglyze is indicated for the topical treatment of head lice infestation in patients aged 6 months and older. The drug was not teratogenic in animals.

Zokinvy (lonafarnib) (639)

Zokinvy is indicated in patients 12 months or older to reduce the risk of mortality in several conditions. Animal studies have found embryo-fetal harm.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2020, the Food and Drug Administration approved 53 new drugs for humans. One of these agents, Annovera (segesterone and ethinyl estradiol), is a vaginal ring to prevent pregnancy and is not relevant in this article. A second drug, Asparlas (calaspargase pegol), indicated to treat acute lymphoblastic leukemia, has not yet been released by its manufacturer. Orgovyx (relugolix) is used for prostate cancer and Lampit (nifurtimox) is drug used in children – neither of these two agents will be covered. The remaining 49 are covered below. The agents with molecular weights less than 1,000 probably cross the placenta in the first half of pregnancy, but nearly all, regardless of MW, will cross in the second half of pregnancy.

No human pregnancy data for these agents has been found, but there are five drugs included in pregnancy registries. It will take some time before the outcomes of these drugs are published. The routine absence of pregnancy data for most drugs was pointed out in an article that I coauthored, “Should pregnant women be included in phase 4 clinical drug trials?”. The article makes a strong argument for including some pregnant women in these trials.
 

Anti-infectives

Artesunate (384)

The drug appears low risk when used in the second and third trimesters. There is inadequate information regarding its use in the first trimester, so the safest course for the embryo appears to be avoiding its use during this period. A single intravenous dose given to rats early in gestation resulted in embryolethality.

Ebanga (ansuvimab) (147,000)

Studies on its use in pregnant animals have not been conducted.

Inmazeb (atoltivimab, maftivimab, odesivimab) (144,000-146,000)

Inmazeb is a combination of the three agents. Studies on its use in pregnant animals have not been conducted.

Veklury (remdesivir) (603)

Veklury is indicated for the treatment of pregnant women hospitalized with COVID-19 who are at risk for serious morbidity and mortality. The drug should be used during pregnancy only if the potential benefit justifies the potential risk for the mother and the fetus.

Antineoplastics

Ayvakit (avapritinib) (499)

The drug may cause fetal harm. The drug was teratogenic in animals.

Blenrep (belantamab mafodotin-blmf) (152,000)

A B-cell maturation antigen, it is indicated for the treatment of multiple myeloma. No human or animal pregnancy data have been located.

Danyelza (naxitamab-gqgk) (144,000)

This agent is used for the treatment of neuroblastoma. Based on its mechanism of action it may cause fetal harm if used in pregnancy.

Gavreto (pralsetinib) (534)

Gavreto is indicated for the treatment of small cell lung cancer. It may cause embryo-fetal harm if used in pregnancy.

Inqovi (cedazuridine + decitabine) (268,228)

The drug combination can cause fetal harm in human pregnancy. It is toxic in pregnant animals.

Margenza (margetuximab-cmkb) (149,000)

Although there are no data on the use of this drug in human pregnancy, the findings in animals and mechanism of action suggest that it will cause fetal harm.

Monjuvi (tafasitamab-cxix) (150,000)

This drug is a cytolytic antibody that is indicated in combination with lenalidomide. The combination may cause fetal harm.

Pemazyre (pemigatinib) (488)

It is indicated for the treatment of cholangiocarcinoma. In an animal study, the drug caused fetal defects, fetal growth retardation, and embryo-fetal death at maternal exposures lower than the human exposure.

Qinlock (ripretinib) (510)

This drug is used for the treatment of patients with advanced gastrointestinal stromal tumor. The drug was teratogenic in pregnant animals.

Retevmo (selpercatinib) (526)

This is a kinase inhibitor used for the treatment of small cell lung cancer. The drug is teratogenic in animals.

Sarclisa (isatuximab-irfc) (148,000)This drug is used in combination with pomalidomide and dexamethasone. The combination would probably cause major toxicity in an embryo or fetus.

Tabrecta (capmatinib) (412 – free base)Capmatinib is a kinase inhibitor used for the treatment of metastatic non–small cell lung cancer. It is teratogenic in animals.

Tazverik (tazemetostat) (654)Tazemetostat is indicated for the treatment of epithelioid sarcoma and follicular lymphoma, The drug is teratogenic in animals.

Trodelvy (sacituzumab govitecan-hziy) (1,602)This agent is used for the treatment of breast cancer. The drug has not been tested in pregnant animals. However, according to the manufacturer, there is a high possibility of human teratogenicity if it is given to a pregnant woman.

Tukysa (tucatinib) (481)

Tukysa is a tyrosine kinase inhibitor that is used in combination with trastuzumab and capecitabine for the treatment of breast cancer. The drug is teratogenic in animals.

Zeposia (ozanimod) (441)

Zeposia is indicated for the treatment of multiple sclerosis. The drug takes about 3 months to eliminate from the body. The drug is teratogenic in animals.

Zepzelca (lurbinectedin) (785)

This agent is used for the treatment of metastatic small cell lung cancer. The drug is teratogenic in animals.
 

Antiemetics

Barhemsys (amisulpride) (369)

This agent is Indicated to prevent nausea and vomiting. Animal data suggest low risk of embryo/fetal birth defects.

Antimigraine

Nurtec (rimegepant) (611)

Nurtec is indicated for acute treatment of migraine. Development toxicity was not observed in animals given doses similar to those used in humans.

Vyepti (eptinezumab-jjmr) (143,000)

A humanized monoclonal antibody that is given every 3 months to prevent migraine. There was no embryo-fetal harm in animals given the drug.
 

CNS

Byfavo (remimazolam) (493 – free base)

This drug is indicated for procedural sedation in adults undergoing procedures lasting 30 minutes or less. No defects were observed in animals.
 

Diagnostics

Cerianna (fluoroestradiol F 18) (289)

It is indicated for use with PET for characterization of estrogen receptor status in patients with ER-positive breast cancer. It has the potential to cause fetal harm depending on the fetal stage of development and the magnitude of radiation dose. There are no data on its use in pregnant women or animals.

Detectnet (copper CU-64 dotatate) (1,497)

All radiopharmaceuticals have the potential to cause fetal harm depending on the fetal stage of development and the magnitude of the radiation dose. There are no pregnancy data in humans or animals

Miscellaneous

Dojolvi (triheptanoin) (429)

This agent is indicated as a source of calories and fatty acids for the treatment of pediatric and adult patients with molecularly confirmed long-chain fatty acid oxidation disorders. Advise patients that there is a pregnancy safety study that collects pregnancy outcome data in women taking Dojolvi during pregnancy. Pregnant patients can enroll in the study by calling 1-888-756-8657.

Enspryng (satralizumab-mwge) (143,000)

It is indicated for the treatment of neuromyelitis optica spectrum disorder in adult patients who are anti–aquaporin-4 (AQP4) antibody positive. No information is available on the risks, if any, in pregnancy. No adverse effects on maternal or fetal development were observed in pregnant monkeys and their offspring.

Evrysdi (risdiplam) (401)

This is a prescription medicine used to treat spinal muscular atrophy in adults and children aged 2 months and older. In pregnant animals the drug caused adverse effects on fetal development.

Gemtesa (vibegron) (445)

Gemtesa is used in adults to treat the symptoms of overactive bladder. The drug had no adverse effects on pregnant animals.

Imcivree (setmelanotide) (1,117)

This drug is indicated for chronic weight management in adult and pediatric patients aged 6 years and older with obesity because of proopiomelanocortin, proprotein convertase subtilisin/kexin type 1, or leptin receptor deficiency. The drug was not embryo toxic in animals.

Isturisa (osilodrostat) (325)

Isturisa is a cortisol synthesis inhibitor indicated for the treatment of adult patients with Cushing’s disease. No adverse fetal effects were observed in pregnant animals.

Klisyri (tirbanibulin) (431)

Tirbanibulin ointment is a microtubule inhibitor that is used to treat actinic keratosis. Information on its effects in pregnancy is not available.

Koselugo (selumetinib) (556)

This is a kinase inhibitor indicated for the treatment of pediatric patients aged 2 years and older. The drug is toxic in pregnant animals but its effects in human pregnancy are not known.

Nexletol (bempedoic acid) (344)

Nexletol is indicated as an adjunct to diet and maximally tolerated statin therapy for the treatment of adults with heterozygous familial hypercholesterolemia or established atherosclerotic cardiovascular disease who require additional lowering of LDL cholesterol. The drug was not teratogenic in animals. Discontinue Nexletol when pregnancy is recognized unless the benefits of therapy outweigh the potential risks to the fetus.

Olinvyk (oliceridine) (503)

Olinvyk injection is indicated in adults for the management of acute pain severe enough to require an intravenous opioid analgesic. Prolonged use of Olinvyk during pregnancy can result in neonatal opioid withdrawal syndrome. The drug was not teratogenic in animals.

Ongentys (opicapone) (413)

Ongentys is indicated as adjunctive treatment to levodopa/carbidopa in patients with Parkinson’s disease experiencing “off” episodes. The drug was teratogenic in rabbits but not in rats.

Orladeyo (berotralstat) (635)

This drug is a plasma kallikrein inhibitor indicated for prophylaxis to prevent attacks of hereditary angioedema. It was not teratogenic in animals.

Oxlumo (lumasiran) (17,286)

Oxlumo is a HAO1-directed small interfering ribonucleic acid indicated for the treatment of primary hyperoxaluria type 1 to lower urinary oxalate levels. No adverse effects on pregnancy or embryo-fetal development related to the drug were observed in animals.

Pizensy (lactitol) (344)

Lactitol is minimally absorbed systemically following oral administration. It is unknown whether maternal use will result in fetal exposure to the drug. No effects on embryo-fetal development were observed in animals at doses much higher than the maximum recommended human dosage.

Rukobia (fostemsavir) (705; 584 for free acid)

This drug is an HIV-1–directed attachment inhibitor, in combination with other antiretrovirals. There is a pregnancy exposure registry that monitors pregnancy outcomes in individuals exposed to the drug during pregnancy. Health care providers are encouraged to register patients by calling the Antiretroviral Pregnancy Registry at 1-800-258-4263.

Sogroya (somapacitan-beco) (23,305)

This is a human growth hormone analog indicated for replacement of endogenous growth hormone in adults with growth hormone deficiency. The drug was not teratogenic in animals.

Tepezza (teprotumumab-trbw) (148,000)

Drug is indicated for the treatment of thyroid eye disease. The drug was teratogenic in cynomolgus monkeys. The manufacturer states that because of the risk, the drug should not be used in pregnancy.

Tauvid (flortaucipir F-18) (262)

This drug is indicated for use with PET imaging of the brain to evaluate for Alzheimer’s disease. It is a radioactive drug and should not be used in pregnant women.

Uplizna (inebilizumab-cdon) (149,000)

Uplizna is indicated for the treatment of neuromyelitis optica spectrum disorder in adult patients who are anti-AQP4 antibody positive. It is a humanized IgG1 monoclonal antibody and immunoglobulins are known to cross the placental barrier. Based on animal data, the drug can cause fetal harm because of B-cell lymphopenia and reduce antibody response in offspring exposed to the drug. Women of childbearing potential should use contraception while receiving Uplizna and for 6 months after the last dose.

Winlevi (clascoterone) (403)

This cream is an androgen receptor inhibitor that is indicated for the topical treatment of acne vulgaris in patients aged 12 years and older. Subcutaneous use in animals was associated with fetal defects.

Xeglyze (abametapir) (1,840)

Xeglyze is indicated for the topical treatment of head lice infestation in patients aged 6 months and older. The drug was not teratogenic in animals.

Zokinvy (lonafarnib) (639)

Zokinvy is indicated in patients 12 months or older to reduce the risk of mortality in several conditions. Animal studies have found embryo-fetal harm.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2020, the Food and Drug Administration approved 53 new drugs for humans. One of these agents, Annovera (segesterone and ethinyl estradiol), is a vaginal ring to prevent pregnancy and is not relevant in this article. A second drug, Asparlas (calaspargase pegol), indicated to treat acute lymphoblastic leukemia, has not yet been released by its manufacturer. Orgovyx (relugolix) is used for prostate cancer and Lampit (nifurtimox) is drug used in children – neither of these two agents will be covered. The remaining 49 are covered below. The agents with molecular weights less than 1,000 probably cross the placenta in the first half of pregnancy, but nearly all, regardless of MW, will cross in the second half of pregnancy.

No human pregnancy data for these agents has been found, but there are five drugs included in pregnancy registries. It will take some time before the outcomes of these drugs are published. The routine absence of pregnancy data for most drugs was pointed out in an article that I coauthored, “Should pregnant women be included in phase 4 clinical drug trials?”. The article makes a strong argument for including some pregnant women in these trials.
 

Anti-infectives

Artesunate (384)

The drug appears low risk when used in the second and third trimesters. There is inadequate information regarding its use in the first trimester, so the safest course for the embryo appears to be avoiding its use during this period. A single intravenous dose given to rats early in gestation resulted in embryolethality.

Ebanga (ansuvimab) (147,000)

Studies on its use in pregnant animals have not been conducted.

Inmazeb (atoltivimab, maftivimab, odesivimab) (144,000-146,000)

Inmazeb is a combination of the three agents. Studies on its use in pregnant animals have not been conducted.

Veklury (remdesivir) (603)

Veklury is indicated for the treatment of pregnant women hospitalized with COVID-19 who are at risk for serious morbidity and mortality. The drug should be used during pregnancy only if the potential benefit justifies the potential risk for the mother and the fetus.

Antineoplastics

Ayvakit (avapritinib) (499)

The drug may cause fetal harm. The drug was teratogenic in animals.

Blenrep (belantamab mafodotin-blmf) (152,000)

A B-cell maturation antigen, it is indicated for the treatment of multiple myeloma. No human or animal pregnancy data have been located.

Danyelza (naxitamab-gqgk) (144,000)

This agent is used for the treatment of neuroblastoma. Based on its mechanism of action it may cause fetal harm if used in pregnancy.

Gavreto (pralsetinib) (534)

Gavreto is indicated for the treatment of small cell lung cancer. It may cause embryo-fetal harm if used in pregnancy.

Inqovi (cedazuridine + decitabine) (268,228)

The drug combination can cause fetal harm in human pregnancy. It is toxic in pregnant animals.

Margenza (margetuximab-cmkb) (149,000)

Although there are no data on the use of this drug in human pregnancy, the findings in animals and mechanism of action suggest that it will cause fetal harm.

Monjuvi (tafasitamab-cxix) (150,000)

This drug is a cytolytic antibody that is indicated in combination with lenalidomide. The combination may cause fetal harm.

Pemazyre (pemigatinib) (488)

It is indicated for the treatment of cholangiocarcinoma. In an animal study, the drug caused fetal defects, fetal growth retardation, and embryo-fetal death at maternal exposures lower than the human exposure.

Qinlock (ripretinib) (510)

This drug is used for the treatment of patients with advanced gastrointestinal stromal tumor. The drug was teratogenic in pregnant animals.

Retevmo (selpercatinib) (526)

This is a kinase inhibitor used for the treatment of small cell lung cancer. The drug is teratogenic in animals.

Sarclisa (isatuximab-irfc) (148,000)This drug is used in combination with pomalidomide and dexamethasone. The combination would probably cause major toxicity in an embryo or fetus.

Tabrecta (capmatinib) (412 – free base)Capmatinib is a kinase inhibitor used for the treatment of metastatic non–small cell lung cancer. It is teratogenic in animals.

Tazverik (tazemetostat) (654)Tazemetostat is indicated for the treatment of epithelioid sarcoma and follicular lymphoma, The drug is teratogenic in animals.

Trodelvy (sacituzumab govitecan-hziy) (1,602)This agent is used for the treatment of breast cancer. The drug has not been tested in pregnant animals. However, according to the manufacturer, there is a high possibility of human teratogenicity if it is given to a pregnant woman.

Tukysa (tucatinib) (481)

Tukysa is a tyrosine kinase inhibitor that is used in combination with trastuzumab and capecitabine for the treatment of breast cancer. The drug is teratogenic in animals.

Zeposia (ozanimod) (441)

Zeposia is indicated for the treatment of multiple sclerosis. The drug takes about 3 months to eliminate from the body. The drug is teratogenic in animals.

Zepzelca (lurbinectedin) (785)

This agent is used for the treatment of metastatic small cell lung cancer. The drug is teratogenic in animals.
 

Antiemetics

Barhemsys (amisulpride) (369)

This agent is Indicated to prevent nausea and vomiting. Animal data suggest low risk of embryo/fetal birth defects.

Antimigraine

Nurtec (rimegepant) (611)

Nurtec is indicated for acute treatment of migraine. Development toxicity was not observed in animals given doses similar to those used in humans.

Vyepti (eptinezumab-jjmr) (143,000)

A humanized monoclonal antibody that is given every 3 months to prevent migraine. There was no embryo-fetal harm in animals given the drug.
 

CNS

Byfavo (remimazolam) (493 – free base)

This drug is indicated for procedural sedation in adults undergoing procedures lasting 30 minutes or less. No defects were observed in animals.
 

Diagnostics

Cerianna (fluoroestradiol F 18) (289)

It is indicated for use with PET for characterization of estrogen receptor status in patients with ER-positive breast cancer. It has the potential to cause fetal harm depending on the fetal stage of development and the magnitude of radiation dose. There are no data on its use in pregnant women or animals.

Detectnet (copper CU-64 dotatate) (1,497)

All radiopharmaceuticals have the potential to cause fetal harm depending on the fetal stage of development and the magnitude of the radiation dose. There are no pregnancy data in humans or animals

Miscellaneous

Dojolvi (triheptanoin) (429)

This agent is indicated as a source of calories and fatty acids for the treatment of pediatric and adult patients with molecularly confirmed long-chain fatty acid oxidation disorders. Advise patients that there is a pregnancy safety study that collects pregnancy outcome data in women taking Dojolvi during pregnancy. Pregnant patients can enroll in the study by calling 1-888-756-8657.

Enspryng (satralizumab-mwge) (143,000)

It is indicated for the treatment of neuromyelitis optica spectrum disorder in adult patients who are anti–aquaporin-4 (AQP4) antibody positive. No information is available on the risks, if any, in pregnancy. No adverse effects on maternal or fetal development were observed in pregnant monkeys and their offspring.

Evrysdi (risdiplam) (401)

This is a prescription medicine used to treat spinal muscular atrophy in adults and children aged 2 months and older. In pregnant animals the drug caused adverse effects on fetal development.

Gemtesa (vibegron) (445)

Gemtesa is used in adults to treat the symptoms of overactive bladder. The drug had no adverse effects on pregnant animals.

Imcivree (setmelanotide) (1,117)

This drug is indicated for chronic weight management in adult and pediatric patients aged 6 years and older with obesity because of proopiomelanocortin, proprotein convertase subtilisin/kexin type 1, or leptin receptor deficiency. The drug was not embryo toxic in animals.

Isturisa (osilodrostat) (325)

Isturisa is a cortisol synthesis inhibitor indicated for the treatment of adult patients with Cushing’s disease. No adverse fetal effects were observed in pregnant animals.

Klisyri (tirbanibulin) (431)

Tirbanibulin ointment is a microtubule inhibitor that is used to treat actinic keratosis. Information on its effects in pregnancy is not available.

Koselugo (selumetinib) (556)

This is a kinase inhibitor indicated for the treatment of pediatric patients aged 2 years and older. The drug is toxic in pregnant animals but its effects in human pregnancy are not known.

Nexletol (bempedoic acid) (344)

Nexletol is indicated as an adjunct to diet and maximally tolerated statin therapy for the treatment of adults with heterozygous familial hypercholesterolemia or established atherosclerotic cardiovascular disease who require additional lowering of LDL cholesterol. The drug was not teratogenic in animals. Discontinue Nexletol when pregnancy is recognized unless the benefits of therapy outweigh the potential risks to the fetus.

Olinvyk (oliceridine) (503)

Olinvyk injection is indicated in adults for the management of acute pain severe enough to require an intravenous opioid analgesic. Prolonged use of Olinvyk during pregnancy can result in neonatal opioid withdrawal syndrome. The drug was not teratogenic in animals.

Ongentys (opicapone) (413)

Ongentys is indicated as adjunctive treatment to levodopa/carbidopa in patients with Parkinson’s disease experiencing “off” episodes. The drug was teratogenic in rabbits but not in rats.

Orladeyo (berotralstat) (635)

This drug is a plasma kallikrein inhibitor indicated for prophylaxis to prevent attacks of hereditary angioedema. It was not teratogenic in animals.

Oxlumo (lumasiran) (17,286)

Oxlumo is a HAO1-directed small interfering ribonucleic acid indicated for the treatment of primary hyperoxaluria type 1 to lower urinary oxalate levels. No adverse effects on pregnancy or embryo-fetal development related to the drug were observed in animals.

Pizensy (lactitol) (344)

Lactitol is minimally absorbed systemically following oral administration. It is unknown whether maternal use will result in fetal exposure to the drug. No effects on embryo-fetal development were observed in animals at doses much higher than the maximum recommended human dosage.

Rukobia (fostemsavir) (705; 584 for free acid)

This drug is an HIV-1–directed attachment inhibitor, in combination with other antiretrovirals. There is a pregnancy exposure registry that monitors pregnancy outcomes in individuals exposed to the drug during pregnancy. Health care providers are encouraged to register patients by calling the Antiretroviral Pregnancy Registry at 1-800-258-4263.

Sogroya (somapacitan-beco) (23,305)

This is a human growth hormone analog indicated for replacement of endogenous growth hormone in adults with growth hormone deficiency. The drug was not teratogenic in animals.

Tepezza (teprotumumab-trbw) (148,000)

Drug is indicated for the treatment of thyroid eye disease. The drug was teratogenic in cynomolgus monkeys. The manufacturer states that because of the risk, the drug should not be used in pregnancy.

Tauvid (flortaucipir F-18) (262)

This drug is indicated for use with PET imaging of the brain to evaluate for Alzheimer’s disease. It is a radioactive drug and should not be used in pregnant women.

Uplizna (inebilizumab-cdon) (149,000)

Uplizna is indicated for the treatment of neuromyelitis optica spectrum disorder in adult patients who are anti-AQP4 antibody positive. It is a humanized IgG1 monoclonal antibody and immunoglobulins are known to cross the placental barrier. Based on animal data, the drug can cause fetal harm because of B-cell lymphopenia and reduce antibody response in offspring exposed to the drug. Women of childbearing potential should use contraception while receiving Uplizna and for 6 months after the last dose.

Winlevi (clascoterone) (403)

This cream is an androgen receptor inhibitor that is indicated for the topical treatment of acne vulgaris in patients aged 12 years and older. Subcutaneous use in animals was associated with fetal defects.

Xeglyze (abametapir) (1,840)

Xeglyze is indicated for the topical treatment of head lice infestation in patients aged 6 months and older. The drug was not teratogenic in animals.

Zokinvy (lonafarnib) (639)

Zokinvy is indicated in patients 12 months or older to reduce the risk of mortality in several conditions. Animal studies have found embryo-fetal harm.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

There are three general classes of antifungal agents (number of agents): azole antifungals (9), echinocandins (3), and polyenes (5). The azole antifungals contain an azole ring and inhibit a wide range of fungi. Echinocandins target the fungal cell wall and the polyenes increase the fungal membrane permeability and lead to cell death.

Pregnancy

Azole antifungals inhibit the growth of fungi. Their trade names and molecular weights:

• Clotrimazole (Mycelex), an over-the-counter product, is available as a topical cream. Several studies have found no association between the drug and birth defects.
• Fluconazole (Diflucan) is a teratogen when doses of ≥400 mg/day are used during the first trimester. Smaller doses do not appear to cause embryo/fetal harm.
• Isavuconazonium (Cresemba) if used in pregnancy, exposure of the embryo/fetus would probably be low based on the >99% plasma protein binding, but the plasma half-life is 130 hours. Moreover, the drug is a potent animal teratogen and is best avoided in pregnancy.
• Itraconazole (Onmel, Sporanox, Tolsura), has a low risk, if any, of structural defects, according to what reported human experience suggests.
• Ketoconazole (Xolegel, Extina, Nizoral; 531) does not appear to adversely effect embryos and fetuses, but the human data are very limited. As with any drug, avoiding organogenesis is the best recommendation.
• Miconazole (Oravig) is usually used topically. Small amounts are absorbed from the vagina. The available evidence suggests that the drug does not increase the risk of congenital malformations.
• Posaconazole (Noxafil) does not have reported use in human pregnancy. The animal reproduction data suggest risk. Based on its molecular weight (about 701), the drug will most likely cross the placenta to the embryo/fetus. Thus, the best course is to avoid the drug during pregnancy, especially in the first trimester.
• Voriconazole (Vfend) has one human report of the drug use in pregnancy. The drug was started at about 19 weeks and continued until the woman gave birth at 35 weeks to a healthy male baby. At 6 months of age, the baby remained normal.

Echinocandin antifungals target the fungal cell wall by inhibiting its synthesis. Their trade names and molecular weights:

• Anidulafungin (Eraxis; 1,140) has no published human data. It is indicated for the treatment of candidemia and other forms of Candida infections. The animal data suggest low risk.
• Caspofungin (Cancidas; 1,213) has no published human data. It is indicated for presumed fungal infections in febrile, neutropenic patients. The animal data are suggestive of human risk, especially if exposure occurs in the first trimester. If possible, maternal treatment should be avoided in the first trimester.
• Micafungin (Mycamine; 1,292) has no published human data. It is indicated for the treatment of patients with esophageal candidiasis and for the prophylaxis of Candida infections in patients undergoing hematopoietic stem cell transplantation. The animal data in one species suggest high risk. If possible, maternal treatment should be avoided in the first trimester.

Polyene antifungals cause depolarization of the fungal cell membrane to increase the membrane permeability, which leads to cell death. Their trade names and molecular weights:

• Amphotericin b (Amphocin; Fungizone; 924) There are three other amphotericin agents: amphotericin b cholesteryl sulfate (Amphotec); amphotericin b lipid complex (Abelcet); amphotericin b liposomal (AmBisome). No reports linking amphotericin b with congenital defects have been found. The drug does cross the human placenta. Although there was a higher rate of spontaneous abortions in rabbits given amphotericin b, there was no fetal harm in rats and rabbits when given amphotericin b lipid complex.
• Nystatin (Bio-Statin; Mycostatin; Nilstat; 926). The drug does not appear to cause embryo-fetal harm. Based on published data, the drug can be used at any time in pregnancy.

Breastfeeding

Small amounts of all the above drugs are probably excreted into breast milk if they are used close to breastfeeding. Most can probably be used during breastfeeding, but there are no data for any of these agents. The safest decision is to not use these drugs when breastfeeding.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

There are three general classes of antifungal agents (number of agents): azole antifungals (9), echinocandins (3), and polyenes (5). The azole antifungals contain an azole ring and inhibit a wide range of fungi. Echinocandins target the fungal cell wall and the polyenes increase the fungal membrane permeability and lead to cell death.

Pregnancy

Azole antifungals inhibit the growth of fungi. Their trade names and molecular weights:

• Clotrimazole (Mycelex), an over-the-counter product, is available as a topical cream. Several studies have found no association between the drug and birth defects.
• Fluconazole (Diflucan) is a teratogen when doses of ≥400 mg/day are used during the first trimester. Smaller doses do not appear to cause embryo/fetal harm.
• Isavuconazonium (Cresemba) if used in pregnancy, exposure of the embryo/fetus would probably be low based on the >99% plasma protein binding, but the plasma half-life is 130 hours. Moreover, the drug is a potent animal teratogen and is best avoided in pregnancy.
• Itraconazole (Onmel, Sporanox, Tolsura), has a low risk, if any, of structural defects, according to what reported human experience suggests.
• Ketoconazole (Xolegel, Extina, Nizoral; 531) does not appear to adversely effect embryos and fetuses, but the human data are very limited. As with any drug, avoiding organogenesis is the best recommendation.
• Miconazole (Oravig) is usually used topically. Small amounts are absorbed from the vagina. The available evidence suggests that the drug does not increase the risk of congenital malformations.
• Posaconazole (Noxafil) does not have reported use in human pregnancy. The animal reproduction data suggest risk. Based on its molecular weight (about 701), the drug will most likely cross the placenta to the embryo/fetus. Thus, the best course is to avoid the drug during pregnancy, especially in the first trimester.
• Voriconazole (Vfend) has one human report of the drug use in pregnancy. The drug was started at about 19 weeks and continued until the woman gave birth at 35 weeks to a healthy male baby. At 6 months of age, the baby remained normal.

Echinocandin antifungals target the fungal cell wall by inhibiting its synthesis. Their trade names and molecular weights:

• Anidulafungin (Eraxis; 1,140) has no published human data. It is indicated for the treatment of candidemia and other forms of Candida infections. The animal data suggest low risk.
• Caspofungin (Cancidas; 1,213) has no published human data. It is indicated for presumed fungal infections in febrile, neutropenic patients. The animal data are suggestive of human risk, especially if exposure occurs in the first trimester. If possible, maternal treatment should be avoided in the first trimester.
• Micafungin (Mycamine; 1,292) has no published human data. It is indicated for the treatment of patients with esophageal candidiasis and for the prophylaxis of Candida infections in patients undergoing hematopoietic stem cell transplantation. The animal data in one species suggest high risk. If possible, maternal treatment should be avoided in the first trimester.

Polyene antifungals cause depolarization of the fungal cell membrane to increase the membrane permeability, which leads to cell death. Their trade names and molecular weights:

• Amphotericin b (Amphocin; Fungizone; 924) There are three other amphotericin agents: amphotericin b cholesteryl sulfate (Amphotec); amphotericin b lipid complex (Abelcet); amphotericin b liposomal (AmBisome). No reports linking amphotericin b with congenital defects have been found. The drug does cross the human placenta. Although there was a higher rate of spontaneous abortions in rabbits given amphotericin b, there was no fetal harm in rats and rabbits when given amphotericin b lipid complex.
• Nystatin (Bio-Statin; Mycostatin; Nilstat; 926). The drug does not appear to cause embryo-fetal harm. Based on published data, the drug can be used at any time in pregnancy.

Breastfeeding

Small amounts of all the above drugs are probably excreted into breast milk if they are used close to breastfeeding. Most can probably be used during breastfeeding, but there are no data for any of these agents. The safest decision is to not use these drugs when breastfeeding.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

There are three general classes of antifungal agents (number of agents): azole antifungals (9), echinocandins (3), and polyenes (5). The azole antifungals contain an azole ring and inhibit a wide range of fungi. Echinocandins target the fungal cell wall and the polyenes increase the fungal membrane permeability and lead to cell death.

Pregnancy

Azole antifungals inhibit the growth of fungi. Their trade names and molecular weights:

• Clotrimazole (Mycelex), an over-the-counter product, is available as a topical cream. Several studies have found no association between the drug and birth defects.
• Fluconazole (Diflucan) is a teratogen when doses of ≥400 mg/day are used during the first trimester. Smaller doses do not appear to cause embryo/fetal harm.
• Isavuconazonium (Cresemba) if used in pregnancy, exposure of the embryo/fetus would probably be low based on the >99% plasma protein binding, but the plasma half-life is 130 hours. Moreover, the drug is a potent animal teratogen and is best avoided in pregnancy.
• Itraconazole (Onmel, Sporanox, Tolsura), has a low risk, if any, of structural defects, according to what reported human experience suggests.
• Ketoconazole (Xolegel, Extina, Nizoral; 531) does not appear to adversely effect embryos and fetuses, but the human data are very limited. As with any drug, avoiding organogenesis is the best recommendation.
• Miconazole (Oravig) is usually used topically. Small amounts are absorbed from the vagina. The available evidence suggests that the drug does not increase the risk of congenital malformations.
• Posaconazole (Noxafil) does not have reported use in human pregnancy. The animal reproduction data suggest risk. Based on its molecular weight (about 701), the drug will most likely cross the placenta to the embryo/fetus. Thus, the best course is to avoid the drug during pregnancy, especially in the first trimester.
• Voriconazole (Vfend) has one human report of the drug use in pregnancy. The drug was started at about 19 weeks and continued until the woman gave birth at 35 weeks to a healthy male baby. At 6 months of age, the baby remained normal.

Echinocandin antifungals target the fungal cell wall by inhibiting its synthesis. Their trade names and molecular weights:

• Anidulafungin (Eraxis; 1,140) has no published human data. It is indicated for the treatment of candidemia and other forms of Candida infections. The animal data suggest low risk.
• Caspofungin (Cancidas; 1,213) has no published human data. It is indicated for presumed fungal infections in febrile, neutropenic patients. The animal data are suggestive of human risk, especially if exposure occurs in the first trimester. If possible, maternal treatment should be avoided in the first trimester.
• Micafungin (Mycamine; 1,292) has no published human data. It is indicated for the treatment of patients with esophageal candidiasis and for the prophylaxis of Candida infections in patients undergoing hematopoietic stem cell transplantation. The animal data in one species suggest high risk. If possible, maternal treatment should be avoided in the first trimester.

Polyene antifungals cause depolarization of the fungal cell membrane to increase the membrane permeability, which leads to cell death. Their trade names and molecular weights:

• Amphotericin b (Amphocin; Fungizone; 924) There are three other amphotericin agents: amphotericin b cholesteryl sulfate (Amphotec); amphotericin b lipid complex (Abelcet); amphotericin b liposomal (AmBisome). No reports linking amphotericin b with congenital defects have been found. The drug does cross the human placenta. Although there was a higher rate of spontaneous abortions in rabbits given amphotericin b, there was no fetal harm in rats and rabbits when given amphotericin b lipid complex.
• Nystatin (Bio-Statin; Mycostatin; Nilstat; 926). The drug does not appear to cause embryo-fetal harm. Based on published data, the drug can be used at any time in pregnancy.

Breastfeeding

Small amounts of all the above drugs are probably excreted into breast milk if they are used close to breastfeeding. Most can probably be used during breastfeeding, but there are no data for any of these agents. The safest decision is to not use these drugs when breastfeeding.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

Asthma effects about 10% of pregnant women worldwide. About 10% of these will have severe disease requiring oral corticosteroids. Brief reviews of asthma drugs are shown below. Because asthma can be a serious disease, selective treatment should not be withheld in pregnancy.

The trade names (if available) and molecular weights (rounded to the nearest whole number) are shown in parentheses. Nearly all of these drugs will cross the placenta.
 

Beclomethasone (Beconase AQ) (539)

Either beclomethasone or budesonide was considered the inhaled steroids of choice for use during pregnancy, according to a position statement from a joint committee of the American College of Obstetricians and Gynecologists and the American College of Allergy, Asthma, and Immunology published in 2000. Although the drug is teratogenic in animals, no human reports associating the use of inhaled beclomethasone with human congenital anomalies have been found.

Benralizumab (Fasenra) (150,000)

There is no published human pregnancy data. Based on studies in monkeys, the drug crosses the placenta in the third trimester. It caused no fetal harm in monkeys when given throughout pregnancy. There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to the drug during pregnancy. Health care providers can enroll patients or encourage patients to enroll themselves by calling 1-877-311-8972 or visiting mothertobaby.org/Fasenra.

Budesonide (Rhinocort) (431)

Either budesonide or beclomethasone was considered the inhaled steroids of choice for use during pregnancy in a position statement from a joint committee of ACOG and ACAAI published in 2000. Although the drug is teratogenic in animals, no human reports associating the use of inhaled beclomethasone with human congenital anomalies have been found.

Caffeine (194)

Although the amount of caffeine in commonly used beverages varies widely, caffeine consumption in pregnancy in moderate amounts does not pose a risk to the fetus. When used in moderation, no association with congenital malformations, spontaneous abortions, preterm birth, and low birth weight have been proven.

Ciclesonide (Alvesco) (541)

Ciclesonide is an inhaled corticosteroid. There is no published human pregnancy data but the molecular weight suggests that it will cross the placenta throughout pregnancy. The drug produced no defects in rats but caused fetal toxicity in rabbits. Although the risk may be low because it is inhaled, avoiding it in the first trimester should be considered (see dexamethasone).

Cromolyn sodium (490)

Cromolyn was available as a nasal spray and oral solution, but it is no longer available in the United States. It is poorly absorbed into the systemic circulation. Neither the human nor the animal data suggest a risk of embryo-fetal harm.

Dexamethasone (392)

This is a corticosteroid with potency similar to betamethasone. Because large epidemiologic studies have found positive associations between systemic corticosteroids and nonsyndromic orofacial clefts, it is best to avoid this agent in the first trimester. However, when used for the treatment of asthma, other studies have not found a significantly increased risk of maternal or fetal complications. The difference in these outcomes may be related to the systemic concentrations of the drug.

Dyphylline (254) + guaifenesin (198) (Difil-G Forte) (Dilex-G 400) (Dy-G)

This is an OTC liquid drug taken orally. It has not been studied in pregnant animals, and there is no published human pregnancy data. However, these bronchodilator agents probably can be classified as low risk for the embryo and fetus. Dyphylline alone has been removed from the market.

Fluticasone (539) + vilanterol (Breo Ellipta) (775)

Fluticasone is a corticosteroid and vilanterol is a long acting beta2-adrenergic agonist that are given by inhalation. The molecular weights suggest that the two agents will cross the placenta throughout pregnancy. The drug did not cause fetal harm in animals. There is no published human pregnancy data for this fixed combination.

Fluticasone (539) + umeclidinium (509) + vilanterol (Trelegy Ellipta) (776)

The combination of fluticasone (glucocorticoid), umeclidinium, and vilanterol (long-acting beta2-adrenergic agonists) is given by inhalation. The molecular weights suggest that the three agents will cross the placenta throughout pregnancy. Although the three-drug combination has not been studied in pregnant rats and rabbits, the individual agents did not cause embryo-fetal harm in these species. There is no evidence that these agents, when given by inhalation, will harm the human embryo and/or fetus. No published human pregnancy reports for this fixed combination have been located.

Formoterol + mometasone (Dulera Aerosol) (841 / 521)

This combination is an aerosol product. Formoterol is a long-acting beta2-adrenergic agonist and mometasone is a topical corticosteroid. There is no published human pregnancy data for this fixed combination. The molecular weights suggest that both drugs will cross the placenta throughout pregnancy. In animals given high oral doses, both were teratogenic.

Ipratropium (Atrovent) (430)

Inhaled ipratropium, an anticholinergic bronchodilator, is recommended for asthma in patients not responding adequately to other therapy. It was not teratogenic mice, rats, and rabbits. Although the human pregnancy data is limited, there is no evidence that the drug is hazardous to the fetus. It produces fewer systemic effects then atropine and may have an additive bronchodilatory effect to beta2 agonists.

Isoproterenol (211)

Isoproterenol is a sympathomimetic (bronchodilator) with beta-adrenergic effects that is given intravenously. No reports linking this agent with congenital defects have been located. The drug was not teratogenic in rats and rabbits but was in hamsters.

Levalbuterol (Xopenex HFA) (240)

Levalbuterol is the (R)-enantiomer of racemic albuterol. It is given by inhalation. No reports of its use in human pregnancy have been located. However, racemic albuterol is considered compatible in pregnancy, and there is no apparent reason not to classify levalbuterol the same way. The drug, when given orally, is teratogenic in animals. If levalbuterol is used in pregnancy for the treatment of asthma, health care professionals are encouraged to call the toll-free number (1-877-311-8972) for information about patient enrollment in an Organization of Teratology Specialists study.

Mepolizumab (Nucala) (149,000)

Mepolizumab is given by subcutaneous injection. It is not indicated for status asthmaticus. There is no published human pregnancy data but the molecular weight suggests that it will not cross the placenta in the first half of pregnancy. The drug did not cause defects in monkeys and mice. There is a pregnancy exposure registry that monitors pregnancy outcomes in women with asthma exposed to Nucala during pregnancy. Health care providers can enroll patients or encourage patients to enroll themselves by calling 1-877-311-8972 or visiting www.mothertobaby.org/asthma.

Metaproterenol (521)

Metaproterenol, a selective beta2-adrenergic agonist, is a respiratory (bronchodilator) that is given orally. Use of this agent in pregnancy has not been linked with congenital defects. However, the drug is teratogenic in animals.

Methylprednisolone (Medrol) (374)

This is an oral glucocorticoid. The molecular weight suggests that it will cross the placenta throughout pregnancy. No reports relating to its use in human pregnancy or in pregnant animals have been located. However, teratogenicity is a potential problem (see below). If high doses of the drug are used in pregnancy, the newborn infants should be carefully observed for signs of hypoadrenalism. In addition, all corticosteroids increase calcium excretion.

Methylprednisolone acetate (Depo-Medrol) (417)

This is an injectable glucocorticoid. See below.

Methylprednisolone sodium succinate (Solu-Medrol) (497)

Methylprednisolone is a glucocorticoid given parenterally. The molecular weight suggests that it will cross the placenta throughout pregnancy. As with other corticosteroids, the drug was teratogenic, at doses equivalent to the human dose, in mice, rats, and rabbits. If the drug is used in pregnancy, the newborn infant should be carefully observed for signs of hypoadrenalism. In addition, all corticosteroids increase calcium excretion.

Mometasone + formoterol (Dulera) (321 + 841)

Dulera is a combination product of mometasone (corticosteroid) and formoterol (beta2-adrenergic agonist). There is no published human data for Dulera but the molecular weights suggest that the drugs will cross the placenta. Oral doses of formoterol were not teratogenic in animals but were with mometasone. The limited human pregnancy data with formoterol did not suggest a risk of embryo/fetal harm, but there is no human pregnancy data for mometasone.

Montelukast (Singulair) (608)

Montelukast is a leukotriene receptor antagonist that is given orally. Although the human data are limited, the drug does not appear to cause harm to the embryo and/or fetus. The drug was not teratogenic in rats and rabbits. The manufacturer maintains a pregnancy registry for women exposed to montelukast. Health care professionals are encouraged to report pregnancy exposures to the registry by calling the toll-free number 1-800-986-8999.

Omalizumab (Xolair) (149,000)

Omalizumab is a recombinant DNA–derived humanized immunoglobulin (IgG1k) monoclonal antibody that is administered subcutaneously for patients with moderate to severe persistent asthma. In monkeys, the drug did not cause embryotoxicity or teratogenicity. The human pregnancy data is very limited but does not suggest an increased embryo-fetal risk.

Prednisone (Rayos) (358)

The use of oral prednisone appears to represent a small risk to the developing fetus. One of these risks appears to be orofacial clefts. The drug causes birth defects in rats, mice, rabbits, and hamsters. However, the available evidence supports its use to control various maternal diseases, one of which is asthma.
 

Reslizumab (Cinqair) (147,000)

Reslizumab is given intravenously. Even though the molecular weight is high, the drug crosses the placenta during pregnancy. In placebo-controlled studies, anaphylaxis occurred in 0.3% of patients receiving the drug. No adverse effects were observed when the drug was given to pregnant mice and rabbits.

Salmeterol (Serevent Diskus) (416)

Salmeterol is a long-acting beta2-adrenergic agonist that is given as an aerosol or dry powder for oral inhalation. Because the drug acts locally in the lung, plasma levels are very low or undetectable and are a result of swallowed salmeterol. The limited human pregnancy data does not suggest risk of embryo-fetal harm. High oral doses in animals were not teratogenic.

Theophylline (180)

Oral theophylline is a methylxanthine that is indicated for the treatment of symptoms of chronic asthma and other chronic lung diseases. According to ACOG, theophylline is not a preferred asthma therapy but considered an alternative agent. No published reports linking the use of theophylline with congenital defects have been located. However, the drug is teratogenic in mice, rats, and rabbits at doses close to the human dose.

Tiotropium (Spiriva Respimat) (490)

Tiotropium, an anticholinergic bronchodilator, is given by oral inhalation only. No reports describing the use of tiotropium during human pregnancy have been located. The animal data suggest low risk. However, because of its long elimination half-life (about 25 hours), use of tiotropium immediately before the diagnosis of an inadvertent pregnancy would most likely result in the exposure of a portion of organogenesis.

Triamcinolone (Kenalog-40) (435)

Triamcinolone is an inhaled corticosteroid with potency slightly greater than prednisone. Although the systemic use of the drug has a small absolute risk of oral clefts and fetal growth restriction, inhaled triamcinolone does not appear to cause embryo-fetal harm. The drug is teratogenic when given orally to animals.

Breastfeeding

It is not known if the above drugs are excreted into breast milk. Agents with relatively low molecular weights will probably be in milk. However, if the maternal levels are low, the amount in milk will probably be very small, if at all. Nevertheless, it is doubtful if any of these agents, even if they are excreted into milk, will have a harmful effect on a nursing infant.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

Asthma effects about 10% of pregnant women worldwide. About 10% of these will have severe disease requiring oral corticosteroids. Brief reviews of asthma drugs are shown below. Because asthma can be a serious disease, selective treatment should not be withheld in pregnancy.

The trade names (if available) and molecular weights (rounded to the nearest whole number) are shown in parentheses. Nearly all of these drugs will cross the placenta.
 

Beclomethasone (Beconase AQ) (539)

Either beclomethasone or budesonide was considered the inhaled steroids of choice for use during pregnancy, according to a position statement from a joint committee of the American College of Obstetricians and Gynecologists and the American College of Allergy, Asthma, and Immunology published in 2000. Although the drug is teratogenic in animals, no human reports associating the use of inhaled beclomethasone with human congenital anomalies have been found.

Benralizumab (Fasenra) (150,000)

There is no published human pregnancy data. Based on studies in monkeys, the drug crosses the placenta in the third trimester. It caused no fetal harm in monkeys when given throughout pregnancy. There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to the drug during pregnancy. Health care providers can enroll patients or encourage patients to enroll themselves by calling 1-877-311-8972 or visiting mothertobaby.org/Fasenra.

Budesonide (Rhinocort) (431)

Either budesonide or beclomethasone was considered the inhaled steroids of choice for use during pregnancy in a position statement from a joint committee of ACOG and ACAAI published in 2000. Although the drug is teratogenic in animals, no human reports associating the use of inhaled beclomethasone with human congenital anomalies have been found.

Caffeine (194)

Although the amount of caffeine in commonly used beverages varies widely, caffeine consumption in pregnancy in moderate amounts does not pose a risk to the fetus. When used in moderation, no association with congenital malformations, spontaneous abortions, preterm birth, and low birth weight have been proven.

Ciclesonide (Alvesco) (541)

Ciclesonide is an inhaled corticosteroid. There is no published human pregnancy data but the molecular weight suggests that it will cross the placenta throughout pregnancy. The drug produced no defects in rats but caused fetal toxicity in rabbits. Although the risk may be low because it is inhaled, avoiding it in the first trimester should be considered (see dexamethasone).

Cromolyn sodium (490)

Cromolyn was available as a nasal spray and oral solution, but it is no longer available in the United States. It is poorly absorbed into the systemic circulation. Neither the human nor the animal data suggest a risk of embryo-fetal harm.

Dexamethasone (392)

This is a corticosteroid with potency similar to betamethasone. Because large epidemiologic studies have found positive associations between systemic corticosteroids and nonsyndromic orofacial clefts, it is best to avoid this agent in the first trimester. However, when used for the treatment of asthma, other studies have not found a significantly increased risk of maternal or fetal complications. The difference in these outcomes may be related to the systemic concentrations of the drug.

Dyphylline (254) + guaifenesin (198) (Difil-G Forte) (Dilex-G 400) (Dy-G)

This is an OTC liquid drug taken orally. It has not been studied in pregnant animals, and there is no published human pregnancy data. However, these bronchodilator agents probably can be classified as low risk for the embryo and fetus. Dyphylline alone has been removed from the market.

Fluticasone (539) + vilanterol (Breo Ellipta) (775)

Fluticasone is a corticosteroid and vilanterol is a long acting beta2-adrenergic agonist that are given by inhalation. The molecular weights suggest that the two agents will cross the placenta throughout pregnancy. The drug did not cause fetal harm in animals. There is no published human pregnancy data for this fixed combination.

Fluticasone (539) + umeclidinium (509) + vilanterol (Trelegy Ellipta) (776)

The combination of fluticasone (glucocorticoid), umeclidinium, and vilanterol (long-acting beta2-adrenergic agonists) is given by inhalation. The molecular weights suggest that the three agents will cross the placenta throughout pregnancy. Although the three-drug combination has not been studied in pregnant rats and rabbits, the individual agents did not cause embryo-fetal harm in these species. There is no evidence that these agents, when given by inhalation, will harm the human embryo and/or fetus. No published human pregnancy reports for this fixed combination have been located.

Formoterol + mometasone (Dulera Aerosol) (841 / 521)

This combination is an aerosol product. Formoterol is a long-acting beta2-adrenergic agonist and mometasone is a topical corticosteroid. There is no published human pregnancy data for this fixed combination. The molecular weights suggest that both drugs will cross the placenta throughout pregnancy. In animals given high oral doses, both were teratogenic.

Ipratropium (Atrovent) (430)

Inhaled ipratropium, an anticholinergic bronchodilator, is recommended for asthma in patients not responding adequately to other therapy. It was not teratogenic mice, rats, and rabbits. Although the human pregnancy data is limited, there is no evidence that the drug is hazardous to the fetus. It produces fewer systemic effects then atropine and may have an additive bronchodilatory effect to beta2 agonists.

Isoproterenol (211)

Isoproterenol is a sympathomimetic (bronchodilator) with beta-adrenergic effects that is given intravenously. No reports linking this agent with congenital defects have been located. The drug was not teratogenic in rats and rabbits but was in hamsters.

Levalbuterol (Xopenex HFA) (240)

Levalbuterol is the (R)-enantiomer of racemic albuterol. It is given by inhalation. No reports of its use in human pregnancy have been located. However, racemic albuterol is considered compatible in pregnancy, and there is no apparent reason not to classify levalbuterol the same way. The drug, when given orally, is teratogenic in animals. If levalbuterol is used in pregnancy for the treatment of asthma, health care professionals are encouraged to call the toll-free number (1-877-311-8972) for information about patient enrollment in an Organization of Teratology Specialists study.

Mepolizumab (Nucala) (149,000)

Mepolizumab is given by subcutaneous injection. It is not indicated for status asthmaticus. There is no published human pregnancy data but the molecular weight suggests that it will not cross the placenta in the first half of pregnancy. The drug did not cause defects in monkeys and mice. There is a pregnancy exposure registry that monitors pregnancy outcomes in women with asthma exposed to Nucala during pregnancy. Health care providers can enroll patients or encourage patients to enroll themselves by calling 1-877-311-8972 or visiting www.mothertobaby.org/asthma.

Metaproterenol (521)

Metaproterenol, a selective beta2-adrenergic agonist, is a respiratory (bronchodilator) that is given orally. Use of this agent in pregnancy has not been linked with congenital defects. However, the drug is teratogenic in animals.

Methylprednisolone (Medrol) (374)

This is an oral glucocorticoid. The molecular weight suggests that it will cross the placenta throughout pregnancy. No reports relating to its use in human pregnancy or in pregnant animals have been located. However, teratogenicity is a potential problem (see below). If high doses of the drug are used in pregnancy, the newborn infants should be carefully observed for signs of hypoadrenalism. In addition, all corticosteroids increase calcium excretion.

Methylprednisolone acetate (Depo-Medrol) (417)

This is an injectable glucocorticoid. See below.

Methylprednisolone sodium succinate (Solu-Medrol) (497)

Methylprednisolone is a glucocorticoid given parenterally. The molecular weight suggests that it will cross the placenta throughout pregnancy. As with other corticosteroids, the drug was teratogenic, at doses equivalent to the human dose, in mice, rats, and rabbits. If the drug is used in pregnancy, the newborn infant should be carefully observed for signs of hypoadrenalism. In addition, all corticosteroids increase calcium excretion.

Mometasone + formoterol (Dulera) (321 + 841)

Dulera is a combination product of mometasone (corticosteroid) and formoterol (beta2-adrenergic agonist). There is no published human data for Dulera but the molecular weights suggest that the drugs will cross the placenta. Oral doses of formoterol were not teratogenic in animals but were with mometasone. The limited human pregnancy data with formoterol did not suggest a risk of embryo/fetal harm, but there is no human pregnancy data for mometasone.

Montelukast (Singulair) (608)

Montelukast is a leukotriene receptor antagonist that is given orally. Although the human data are limited, the drug does not appear to cause harm to the embryo and/or fetus. The drug was not teratogenic in rats and rabbits. The manufacturer maintains a pregnancy registry for women exposed to montelukast. Health care professionals are encouraged to report pregnancy exposures to the registry by calling the toll-free number 1-800-986-8999.

Omalizumab (Xolair) (149,000)

Omalizumab is a recombinant DNA–derived humanized immunoglobulin (IgG1k) monoclonal antibody that is administered subcutaneously for patients with moderate to severe persistent asthma. In monkeys, the drug did not cause embryotoxicity or teratogenicity. The human pregnancy data is very limited but does not suggest an increased embryo-fetal risk.

Prednisone (Rayos) (358)

The use of oral prednisone appears to represent a small risk to the developing fetus. One of these risks appears to be orofacial clefts. The drug causes birth defects in rats, mice, rabbits, and hamsters. However, the available evidence supports its use to control various maternal diseases, one of which is asthma.
 

Reslizumab (Cinqair) (147,000)

Reslizumab is given intravenously. Even though the molecular weight is high, the drug crosses the placenta during pregnancy. In placebo-controlled studies, anaphylaxis occurred in 0.3% of patients receiving the drug. No adverse effects were observed when the drug was given to pregnant mice and rabbits.

Salmeterol (Serevent Diskus) (416)

Salmeterol is a long-acting beta2-adrenergic agonist that is given as an aerosol or dry powder for oral inhalation. Because the drug acts locally in the lung, plasma levels are very low or undetectable and are a result of swallowed salmeterol. The limited human pregnancy data does not suggest risk of embryo-fetal harm. High oral doses in animals were not teratogenic.

Theophylline (180)

Oral theophylline is a methylxanthine that is indicated for the treatment of symptoms of chronic asthma and other chronic lung diseases. According to ACOG, theophylline is not a preferred asthma therapy but considered an alternative agent. No published reports linking the use of theophylline with congenital defects have been located. However, the drug is teratogenic in mice, rats, and rabbits at doses close to the human dose.

Tiotropium (Spiriva Respimat) (490)

Tiotropium, an anticholinergic bronchodilator, is given by oral inhalation only. No reports describing the use of tiotropium during human pregnancy have been located. The animal data suggest low risk. However, because of its long elimination half-life (about 25 hours), use of tiotropium immediately before the diagnosis of an inadvertent pregnancy would most likely result in the exposure of a portion of organogenesis.

Triamcinolone (Kenalog-40) (435)

Triamcinolone is an inhaled corticosteroid with potency slightly greater than prednisone. Although the systemic use of the drug has a small absolute risk of oral clefts and fetal growth restriction, inhaled triamcinolone does not appear to cause embryo-fetal harm. The drug is teratogenic when given orally to animals.

Breastfeeding

It is not known if the above drugs are excreted into breast milk. Agents with relatively low molecular weights will probably be in milk. However, if the maternal levels are low, the amount in milk will probably be very small, if at all. Nevertheless, it is doubtful if any of these agents, even if they are excreted into milk, will have a harmful effect on a nursing infant.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

Asthma effects about 10% of pregnant women worldwide. About 10% of these will have severe disease requiring oral corticosteroids. Brief reviews of asthma drugs are shown below. Because asthma can be a serious disease, selective treatment should not be withheld in pregnancy.

The trade names (if available) and molecular weights (rounded to the nearest whole number) are shown in parentheses. Nearly all of these drugs will cross the placenta.
 

Beclomethasone (Beconase AQ) (539)

Either beclomethasone or budesonide was considered the inhaled steroids of choice for use during pregnancy, according to a position statement from a joint committee of the American College of Obstetricians and Gynecologists and the American College of Allergy, Asthma, and Immunology published in 2000. Although the drug is teratogenic in animals, no human reports associating the use of inhaled beclomethasone with human congenital anomalies have been found.

Benralizumab (Fasenra) (150,000)

There is no published human pregnancy data. Based on studies in monkeys, the drug crosses the placenta in the third trimester. It caused no fetal harm in monkeys when given throughout pregnancy. There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to the drug during pregnancy. Health care providers can enroll patients or encourage patients to enroll themselves by calling 1-877-311-8972 or visiting mothertobaby.org/Fasenra.

Budesonide (Rhinocort) (431)

Either budesonide or beclomethasone was considered the inhaled steroids of choice for use during pregnancy in a position statement from a joint committee of ACOG and ACAAI published in 2000. Although the drug is teratogenic in animals, no human reports associating the use of inhaled beclomethasone with human congenital anomalies have been found.

Caffeine (194)

Although the amount of caffeine in commonly used beverages varies widely, caffeine consumption in pregnancy in moderate amounts does not pose a risk to the fetus. When used in moderation, no association with congenital malformations, spontaneous abortions, preterm birth, and low birth weight have been proven.

Ciclesonide (Alvesco) (541)

Ciclesonide is an inhaled corticosteroid. There is no published human pregnancy data but the molecular weight suggests that it will cross the placenta throughout pregnancy. The drug produced no defects in rats but caused fetal toxicity in rabbits. Although the risk may be low because it is inhaled, avoiding it in the first trimester should be considered (see dexamethasone).

Cromolyn sodium (490)

Cromolyn was available as a nasal spray and oral solution, but it is no longer available in the United States. It is poorly absorbed into the systemic circulation. Neither the human nor the animal data suggest a risk of embryo-fetal harm.

Dexamethasone (392)

This is a corticosteroid with potency similar to betamethasone. Because large epidemiologic studies have found positive associations between systemic corticosteroids and nonsyndromic orofacial clefts, it is best to avoid this agent in the first trimester. However, when used for the treatment of asthma, other studies have not found a significantly increased risk of maternal or fetal complications. The difference in these outcomes may be related to the systemic concentrations of the drug.

Dyphylline (254) + guaifenesin (198) (Difil-G Forte) (Dilex-G 400) (Dy-G)

This is an OTC liquid drug taken orally. It has not been studied in pregnant animals, and there is no published human pregnancy data. However, these bronchodilator agents probably can be classified as low risk for the embryo and fetus. Dyphylline alone has been removed from the market.

Fluticasone (539) + vilanterol (Breo Ellipta) (775)

Fluticasone is a corticosteroid and vilanterol is a long acting beta2-adrenergic agonist that are given by inhalation. The molecular weights suggest that the two agents will cross the placenta throughout pregnancy. The drug did not cause fetal harm in animals. There is no published human pregnancy data for this fixed combination.

Fluticasone (539) + umeclidinium (509) + vilanterol (Trelegy Ellipta) (776)

The combination of fluticasone (glucocorticoid), umeclidinium, and vilanterol (long-acting beta2-adrenergic agonists) is given by inhalation. The molecular weights suggest that the three agents will cross the placenta throughout pregnancy. Although the three-drug combination has not been studied in pregnant rats and rabbits, the individual agents did not cause embryo-fetal harm in these species. There is no evidence that these agents, when given by inhalation, will harm the human embryo and/or fetus. No published human pregnancy reports for this fixed combination have been located.

Formoterol + mometasone (Dulera Aerosol) (841 / 521)

This combination is an aerosol product. Formoterol is a long-acting beta2-adrenergic agonist and mometasone is a topical corticosteroid. There is no published human pregnancy data for this fixed combination. The molecular weights suggest that both drugs will cross the placenta throughout pregnancy. In animals given high oral doses, both were teratogenic.

Ipratropium (Atrovent) (430)

Inhaled ipratropium, an anticholinergic bronchodilator, is recommended for asthma in patients not responding adequately to other therapy. It was not teratogenic mice, rats, and rabbits. Although the human pregnancy data is limited, there is no evidence that the drug is hazardous to the fetus. It produces fewer systemic effects then atropine and may have an additive bronchodilatory effect to beta2 agonists.

Isoproterenol (211)

Isoproterenol is a sympathomimetic (bronchodilator) with beta-adrenergic effects that is given intravenously. No reports linking this agent with congenital defects have been located. The drug was not teratogenic in rats and rabbits but was in hamsters.

Levalbuterol (Xopenex HFA) (240)

Levalbuterol is the (R)-enantiomer of racemic albuterol. It is given by inhalation. No reports of its use in human pregnancy have been located. However, racemic albuterol is considered compatible in pregnancy, and there is no apparent reason not to classify levalbuterol the same way. The drug, when given orally, is teratogenic in animals. If levalbuterol is used in pregnancy for the treatment of asthma, health care professionals are encouraged to call the toll-free number (1-877-311-8972) for information about patient enrollment in an Organization of Teratology Specialists study.

Mepolizumab (Nucala) (149,000)

Mepolizumab is given by subcutaneous injection. It is not indicated for status asthmaticus. There is no published human pregnancy data but the molecular weight suggests that it will not cross the placenta in the first half of pregnancy. The drug did not cause defects in monkeys and mice. There is a pregnancy exposure registry that monitors pregnancy outcomes in women with asthma exposed to Nucala during pregnancy. Health care providers can enroll patients or encourage patients to enroll themselves by calling 1-877-311-8972 or visiting www.mothertobaby.org/asthma.

Metaproterenol (521)

Metaproterenol, a selective beta2-adrenergic agonist, is a respiratory (bronchodilator) that is given orally. Use of this agent in pregnancy has not been linked with congenital defects. However, the drug is teratogenic in animals.

Methylprednisolone (Medrol) (374)

This is an oral glucocorticoid. The molecular weight suggests that it will cross the placenta throughout pregnancy. No reports relating to its use in human pregnancy or in pregnant animals have been located. However, teratogenicity is a potential problem (see below). If high doses of the drug are used in pregnancy, the newborn infants should be carefully observed for signs of hypoadrenalism. In addition, all corticosteroids increase calcium excretion.

Methylprednisolone acetate (Depo-Medrol) (417)

This is an injectable glucocorticoid. See below.

Methylprednisolone sodium succinate (Solu-Medrol) (497)

Methylprednisolone is a glucocorticoid given parenterally. The molecular weight suggests that it will cross the placenta throughout pregnancy. As with other corticosteroids, the drug was teratogenic, at doses equivalent to the human dose, in mice, rats, and rabbits. If the drug is used in pregnancy, the newborn infant should be carefully observed for signs of hypoadrenalism. In addition, all corticosteroids increase calcium excretion.

Mometasone + formoterol (Dulera) (321 + 841)

Dulera is a combination product of mometasone (corticosteroid) and formoterol (beta2-adrenergic agonist). There is no published human data for Dulera but the molecular weights suggest that the drugs will cross the placenta. Oral doses of formoterol were not teratogenic in animals but were with mometasone. The limited human pregnancy data with formoterol did not suggest a risk of embryo/fetal harm, but there is no human pregnancy data for mometasone.

Montelukast (Singulair) (608)

Montelukast is a leukotriene receptor antagonist that is given orally. Although the human data are limited, the drug does not appear to cause harm to the embryo and/or fetus. The drug was not teratogenic in rats and rabbits. The manufacturer maintains a pregnancy registry for women exposed to montelukast. Health care professionals are encouraged to report pregnancy exposures to the registry by calling the toll-free number 1-800-986-8999.

Omalizumab (Xolair) (149,000)

Omalizumab is a recombinant DNA–derived humanized immunoglobulin (IgG1k) monoclonal antibody that is administered subcutaneously for patients with moderate to severe persistent asthma. In monkeys, the drug did not cause embryotoxicity or teratogenicity. The human pregnancy data is very limited but does not suggest an increased embryo-fetal risk.

Prednisone (Rayos) (358)

The use of oral prednisone appears to represent a small risk to the developing fetus. One of these risks appears to be orofacial clefts. The drug causes birth defects in rats, mice, rabbits, and hamsters. However, the available evidence supports its use to control various maternal diseases, one of which is asthma.
 

Reslizumab (Cinqair) (147,000)

Reslizumab is given intravenously. Even though the molecular weight is high, the drug crosses the placenta during pregnancy. In placebo-controlled studies, anaphylaxis occurred in 0.3% of patients receiving the drug. No adverse effects were observed when the drug was given to pregnant mice and rabbits.

Salmeterol (Serevent Diskus) (416)

Salmeterol is a long-acting beta2-adrenergic agonist that is given as an aerosol or dry powder for oral inhalation. Because the drug acts locally in the lung, plasma levels are very low or undetectable and are a result of swallowed salmeterol. The limited human pregnancy data does not suggest risk of embryo-fetal harm. High oral doses in animals were not teratogenic.

Theophylline (180)

Oral theophylline is a methylxanthine that is indicated for the treatment of symptoms of chronic asthma and other chronic lung diseases. According to ACOG, theophylline is not a preferred asthma therapy but considered an alternative agent. No published reports linking the use of theophylline with congenital defects have been located. However, the drug is teratogenic in mice, rats, and rabbits at doses close to the human dose.

Tiotropium (Spiriva Respimat) (490)

Tiotropium, an anticholinergic bronchodilator, is given by oral inhalation only. No reports describing the use of tiotropium during human pregnancy have been located. The animal data suggest low risk. However, because of its long elimination half-life (about 25 hours), use of tiotropium immediately before the diagnosis of an inadvertent pregnancy would most likely result in the exposure of a portion of organogenesis.

Triamcinolone (Kenalog-40) (435)

Triamcinolone is an inhaled corticosteroid with potency slightly greater than prednisone. Although the systemic use of the drug has a small absolute risk of oral clefts and fetal growth restriction, inhaled triamcinolone does not appear to cause embryo-fetal harm. The drug is teratogenic when given orally to animals.

Breastfeeding

It is not known if the above drugs are excreted into breast milk. Agents with relatively low molecular weights will probably be in milk. However, if the maternal levels are low, the amount in milk will probably be very small, if at all. Nevertheless, it is doubtful if any of these agents, even if they are excreted into milk, will have a harmful effect on a nursing infant.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2019, the Food and Drug Administration approved 42 drugs, 6 of which will not be discussed here because of space limitations: recarbrio, a three-drug combination, containing imipenem, cilastatin, and relebactam; polatuzumab (Polivy) combined with bendamustine and a rituximab product; pretomanid combined with bedaquiline and linezolid; romosozumab (Evenity) for postmenopausal women; and alpelisib (Piqray) for postmenopausal women. In addition, darolutamide (Nubeqa) will not be included because it is indicated for the treatment of patients with prostate cancer. The remaining 36 agents are listed alphabetically below with the trade names in parentheses.

PhotoDisk

The molecular weights (if available), rounded to the nearest whole number, are shown in parentheses. As with nearly all drugs, avoiding these agents in pregnancy is the best choice.

Air polymer-type a intrauterine foam (ExEm Foam), an ultrasound contrast agent, is indicated for sonohysterosalpingography to assess fallopian tube patency in women with known or suspected infertility. Animal studies have not been conducted, and the agent is contraindicated in pregnancy.

Afamelanotide implant (Scenesse) (1,647) is a melanocortin 1 receptor agonist that is indicated to increase pain-free light exposure in adult patients with a history of phototoxic reactions from erythropoietic protoporphyria. The drug caused no embryofetal toxicity in two species of rats. The molecular weight suggests that it will not cross the placenta, at least early in pregnancy.

Alpelisib (Piqray) (441) is a kinase inhibitor that is combined with fulvestrant for the treatment of advanced breast cancer in women and men. The molecular weight suggests that it can cross the human placenta. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Bremelanotide (Vyleesi) (1,025) is indicated for the treatment of premenopausal women with hypoactive sexual disorder. The drug caused fetal harm in dogs and mice. If a pregnant woman is exposed to the drug, health care providers are encouraged to call the VYLEESI Pregnancy Exposure Registry at 877-411-2510.

Brolucizumab (Beovu) (26,000) is a human vascular endothelial growth factor that is indicated for the treatment of neovascular age-related macular degeneration. In animals, it caused malformations, embryofetal resorption, and decreased fetal weight. Other adverse effects were follicular development, corpus luteum function, and fertility.

Caplacizumab (Cablivi) (28,000) is indicated for the treatment of adult patients with acquired thrombotic thrombocytopenia purpura, in combination with plasma exchange and immunosuppressive therapy. If used in pregnancy, there is a risk of hemorrhage in the mother and fetus. In guinea pigs given intramuscular doses of the drug, there was no evidence of adverse developmental outcomes.

Cefiderocol (Fetroja) (3,044) is an IV cephalosporin antibiotic indicated for the treatment of urinary tract infections, including pyelonephritis. The manufacturer states that it should be used in patients 18 years of age or older who have limited or no alternative treatment options. Consistent with other cephalosporins, no developmental adverse effects were observed in rats and mice.

Cenobamate (Xcopri) (268) is indicated for the treatment of partial-onset seizures in adults. In pregnant animals given the drug, there was increased embryo-fetal mortality, decreased fetal and offspring body weight, and neurobehavioral and reproductive impairment in offspring. If a pregnant woman receives this drug, encourage her to enroll in the North American Antiepileptic Drug Pregnancy Registry by calling the toll-free number 1-888-233-2334.

Crizanlizumab (Adakveo) (146,000) is indicated to reduce the frequency of vaso-occlusive crises in patients with sickle cell disease. In monkeys given doses slightly higher than those given to humans, there was increased fetal loss (abortions/stillbirths).

Entrectinib (Rozlytrek) (561) is a kinase inhibitor indicated for the treatment of cancer. The drug was teratogenic in rats. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Erdafitinib (Balversa) (447), a kinase inhibitor, is indicated for the treatment of locally advanced or metastatic urothelial carcinoma. In rats given doses during organogenesis with maternal exposures less than human exposures, the drug was teratogenic and caused embryofetal death. The manufacturer states that women of reproductive potential should use effective contraception during treatment and for 1 month after the last dose. The same advice was provided for male patients with female partners of reproductive potential. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Fedratinib (Inrebic) (616), a kinase inhibitor, is indicated for patients with intermediate-2 or high-risk primary or secondary myelofibrosis. The drug was teratogenic in rats when doses that were about 0.1 times the human exposure based on AUC (area under the curve) at the recommended daily dose during organogenesis. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Fluorodopa f18 (214) is a radioactive diagnostic agent. It is indicated for use in positron emission tomography to visualize dopaminergic nerve terminals in the striatum for evaluation of adult patients with suspected parkinsonian syndromes. The potential for adverse pregnant outcomes is based on the radiation dose and the gestational timing of exposure.

Givosiran sodium (Givlaari) (17,2460) is an aminolevulinate synthase 1-directed small interfering RNA given subcutaneously. It is indicated for the treatment of adults with acute hepatic porphyria. Doses less than 10 times the human dose in rats and rabbits produced maternal toxicity. In rats there was increased postimplantation loss, and in rats there was skeletal variation (incomplete ossification of pubes).

Golodirsen (Vyondys 53) (8,647) is indicated for the treatment of Duchenne muscular dystrophy given intravenously. There are no human or animal data available to assess the use of this drug during pregnancy.

Istradefylline (Nourianz) (384) is an adenosine receptor antagonist given orally. It is indicated as adjunctive treatment to levodopa/carbidopa in patients with Parkinson’s disease experiencing “off” episodes. In pregnant rats and rabbits, the drug was related to teratogenicity, embryo-fetal and offspring mortality, and growth deficits at clinically relevant exposures.

Lasmiditan (Reyvow) (436), a serotonin receptor agonist, is indicated for acute treatment of migraine with or without aura. In animals, the drug caused increased incidences of fetal defects, increased embryo-fetal and offspring mortality, and decreased fetal body weight at maternal exposures less than (rabbits) or greater than (rat) those observed clinically.

Lefamulin (Xenleta) (568) is an antibacterial agent available for oral and IV administration. They are indicated for the treatment of community-acquired bacterial pneumonia. The drug was teratogenic in rats at systemic exposures lower than those in humans, an increased incidence of post-implantation fetal loss and stillbirths, and decreased fetal body weights and ossification. There was also an apparent delay in sexual maturation in rats.

Luspatercept (Reblozyl) (76,000) is given subcutaneously for the treatment of anemia in patients with beta thalassemia who require regular red blood cell transfusions. In rats and rabbits, the drug cause increased embryo-fetal mortality, alteration to growth, and structural defects at exposures (based on AUC) that were about 13 times (rats) and 18 times (rabbits) the maximum recommended human dose.

Pexidartinib (Turalio) (454) is an oral kinase inhibitor that is indicated for the treatment of symptomatic tenosynovial giant cell tumor associated with severe morbidity or functional limitations and not amenable with surgery. In rats and rabbits, the drug caused malformations, increased post-implantation loss, and abortion at exposures nearly equal to the human exposure. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Pitolisant HCl (Wakix) (296) is an histamine-3 receptor antagonist/inverse agonist indicated for the treatment of excessive daytime sleepiness in patients with narcolepsy. The drug has caused maternal and embryofetal toxicity in rats and rabbits at doses greater than and equal to 13 times and greater than 4 times the maximum human dose, respectively. The manufacturer has a pregnancy exposure registry that patients can contact at 1-800-833-7460.

Prabotulinum toxin A (Jeuveau) (900,000) is an acetylcholine release inhibitor and a neuromuscular blocking agent indicated for the temporary improvement in the appearance of moderate to severe glabellar lines associated with corrugator and/or procerus muscle activity. The drug caused no adverse embryo-fetal in rats with doses up to 12 times the human dose.

Risankizumab-rzaa (Skyrizi) (molecular weight unknown), an interleukin-23 antagonist, is used for the treatment of moderate-to-severe plaque psoriasis. In pregnant monkeys, doses that were 20 times the maximum human dose increased fetal/infant loss.

Selinexor (Xpovio) (443) is an oral nuclear export inhibitor given in combination with dexamethasone for the treatment of relapsed or refractory myeloma. At doses lower than those used clinically, the drug caused structural abnormalities and alterations to growth in fetal rats.

Siponimod (Mayzent) (1,149) is an oral sphingosine 1-phosphate receptor modulator. It is indicated for the treatment of relapsing forms of multiple sclerosis. At low doses, the drug caused embryotoxicity and fetotoxicity in rats and rabbits including embryofetal deaths and abortions. The drug was teratogenic in both species.

Solriamfetol (Sunosi) (231) is an oral dopamine and norepinephrine reuptake inhibitor that is indicated to improve wakefulness in adult patients with excessive daytime sleepiness associated with narcolepsy or obstructive sleep apnea. The drug caused maternal and fetal toxicities in rats and rabbits and was teratogenic. The manufacturer has a pregnancy exposure registry to monitor pregnancy outcomes. Health care providers or patients can enroll in the program by calling 1-877-283-6220 or contacting the company.

Tafamidis meglumine (Vyndaqel) (503) and tafamidis (Vyndamax) (308) are indicated for the treatment of the cardiomyopathy of wild type or hereditary transthyretin-mediated amyloidosis to reduce cardiovascular mortality and cardiovascular-related hospitalization. In rabbits and rats, use of the drugs during pregnancy caused birth defects, embryo-fetal mortality, and fetal body weight reduction. Limited available data with Vyndaqel use in human pregnancy at a dose of 20 mg/day have not identified any drug-associated risks for major birth defects, miscarriage, or adverse maternal or fetal outcomes (see package insert).

Tenapanor (Ibsrela) (1,218) is indicated for the treatment of irritable bowel syndrome with constipation. The drug is minimally absorbed systemically, with plasma concentrations below the limit of quantification. No adverse maternal or fetal outcomes in rats or rabbits were observed. As reported by the manufacturer, in a small number of pregnant women, no drug-induced adverse maternal or fetal outcomes were identified.

Triclabendazole (Egaten) (360), an oral anthelmintic, is indicated for the treatment of fascioliasis. The drug was not teratogenic in mice and rabbits.

Trifarotene (Aklief) (460) cream is a retinoid that is indicated for the topical treatment of acne vulgaris. Animal data was related to oral retinoids and it not applicable to this agent. The manufacturer reported that available data from the use of the cream in pregnant women have not identified a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes.

Upadacitinib (Rinvoq) (389) is an oral Janus inhibitor. It is indicated for the treatment of moderate to severe active rheumatoid arthritis in patients who have had an inadequate response or intolerance to methotrexate. The drug caused increases in fetal malformations when given to rats and rabbits during organogenesis.

Voxelotor (Oxbryta) (337) is an oral hemoglobin S polymerization inhibitor indicated for the treatment of sickle cell disease. In rats and rabbits, there was no evidence of adverse developmental outcomes.

Zanubrutinib (Brukinsa) (472), an oral kinase inhibitor, is indicated for the treatment of mantle cell lymphoma. The drug caused embryofetal toxicity in pregnant rats, including malformations. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Breastfeeding

Brexanolone (Zulresso) (319) is indicated for the treatment of postpartum depression. It is given as a continuous IV infusion over 60 hours. The drug, at exposures close to those seen in humans, did not cause structural defects in rabbits and rats, but did cause fetal toxicity. Because patients are at risk of excessive sedation or sudden loss of consciousness when receiving the drug, it is only available through a restricted program called the ZULRESSO REMS. Health care providers are encouraged to register patients by calling the National Pregnancy Registry for Antidepressants at 844-405-6185. To obtain a list of health care facilities enrolled in the program call 844-472-4379.

Nearly all of the above drugs will cross into a woman’s colostrum during the first 48 hours post partum. These amounts should be very small, but not breastfeeding is the best choice.
 

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2019, the Food and Drug Administration approved 42 drugs, 6 of which will not be discussed here because of space limitations: recarbrio, a three-drug combination, containing imipenem, cilastatin, and relebactam; polatuzumab (Polivy) combined with bendamustine and a rituximab product; pretomanid combined with bedaquiline and linezolid; romosozumab (Evenity) for postmenopausal women; and alpelisib (Piqray) for postmenopausal women. In addition, darolutamide (Nubeqa) will not be included because it is indicated for the treatment of patients with prostate cancer. The remaining 36 agents are listed alphabetically below with the trade names in parentheses.

PhotoDisk

The molecular weights (if available), rounded to the nearest whole number, are shown in parentheses. As with nearly all drugs, avoiding these agents in pregnancy is the best choice.

Air polymer-type a intrauterine foam (ExEm Foam), an ultrasound contrast agent, is indicated for sonohysterosalpingography to assess fallopian tube patency in women with known or suspected infertility. Animal studies have not been conducted, and the agent is contraindicated in pregnancy.

Afamelanotide implant (Scenesse) (1,647) is a melanocortin 1 receptor agonist that is indicated to increase pain-free light exposure in adult patients with a history of phototoxic reactions from erythropoietic protoporphyria. The drug caused no embryofetal toxicity in two species of rats. The molecular weight suggests that it will not cross the placenta, at least early in pregnancy.

Alpelisib (Piqray) (441) is a kinase inhibitor that is combined with fulvestrant for the treatment of advanced breast cancer in women and men. The molecular weight suggests that it can cross the human placenta. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Bremelanotide (Vyleesi) (1,025) is indicated for the treatment of premenopausal women with hypoactive sexual disorder. The drug caused fetal harm in dogs and mice. If a pregnant woman is exposed to the drug, health care providers are encouraged to call the VYLEESI Pregnancy Exposure Registry at 877-411-2510.

Brolucizumab (Beovu) (26,000) is a human vascular endothelial growth factor that is indicated for the treatment of neovascular age-related macular degeneration. In animals, it caused malformations, embryofetal resorption, and decreased fetal weight. Other adverse effects were follicular development, corpus luteum function, and fertility.

Caplacizumab (Cablivi) (28,000) is indicated for the treatment of adult patients with acquired thrombotic thrombocytopenia purpura, in combination with plasma exchange and immunosuppressive therapy. If used in pregnancy, there is a risk of hemorrhage in the mother and fetus. In guinea pigs given intramuscular doses of the drug, there was no evidence of adverse developmental outcomes.

Cefiderocol (Fetroja) (3,044) is an IV cephalosporin antibiotic indicated for the treatment of urinary tract infections, including pyelonephritis. The manufacturer states that it should be used in patients 18 years of age or older who have limited or no alternative treatment options. Consistent with other cephalosporins, no developmental adverse effects were observed in rats and mice.

Cenobamate (Xcopri) (268) is indicated for the treatment of partial-onset seizures in adults. In pregnant animals given the drug, there was increased embryo-fetal mortality, decreased fetal and offspring body weight, and neurobehavioral and reproductive impairment in offspring. If a pregnant woman receives this drug, encourage her to enroll in the North American Antiepileptic Drug Pregnancy Registry by calling the toll-free number 1-888-233-2334.

Crizanlizumab (Adakveo) (146,000) is indicated to reduce the frequency of vaso-occlusive crises in patients with sickle cell disease. In monkeys given doses slightly higher than those given to humans, there was increased fetal loss (abortions/stillbirths).

Entrectinib (Rozlytrek) (561) is a kinase inhibitor indicated for the treatment of cancer. The drug was teratogenic in rats. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Erdafitinib (Balversa) (447), a kinase inhibitor, is indicated for the treatment of locally advanced or metastatic urothelial carcinoma. In rats given doses during organogenesis with maternal exposures less than human exposures, the drug was teratogenic and caused embryofetal death. The manufacturer states that women of reproductive potential should use effective contraception during treatment and for 1 month after the last dose. The same advice was provided for male patients with female partners of reproductive potential. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Fedratinib (Inrebic) (616), a kinase inhibitor, is indicated for patients with intermediate-2 or high-risk primary or secondary myelofibrosis. The drug was teratogenic in rats when doses that were about 0.1 times the human exposure based on AUC (area under the curve) at the recommended daily dose during organogenesis. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Fluorodopa f18 (214) is a radioactive diagnostic agent. It is indicated for use in positron emission tomography to visualize dopaminergic nerve terminals in the striatum for evaluation of adult patients with suspected parkinsonian syndromes. The potential for adverse pregnant outcomes is based on the radiation dose and the gestational timing of exposure.

Givosiran sodium (Givlaari) (17,2460) is an aminolevulinate synthase 1-directed small interfering RNA given subcutaneously. It is indicated for the treatment of adults with acute hepatic porphyria. Doses less than 10 times the human dose in rats and rabbits produced maternal toxicity. In rats there was increased postimplantation loss, and in rats there was skeletal variation (incomplete ossification of pubes).

Golodirsen (Vyondys 53) (8,647) is indicated for the treatment of Duchenne muscular dystrophy given intravenously. There are no human or animal data available to assess the use of this drug during pregnancy.

Istradefylline (Nourianz) (384) is an adenosine receptor antagonist given orally. It is indicated as adjunctive treatment to levodopa/carbidopa in patients with Parkinson’s disease experiencing “off” episodes. In pregnant rats and rabbits, the drug was related to teratogenicity, embryo-fetal and offspring mortality, and growth deficits at clinically relevant exposures.

Lasmiditan (Reyvow) (436), a serotonin receptor agonist, is indicated for acute treatment of migraine with or without aura. In animals, the drug caused increased incidences of fetal defects, increased embryo-fetal and offspring mortality, and decreased fetal body weight at maternal exposures less than (rabbits) or greater than (rat) those observed clinically.

Lefamulin (Xenleta) (568) is an antibacterial agent available for oral and IV administration. They are indicated for the treatment of community-acquired bacterial pneumonia. The drug was teratogenic in rats at systemic exposures lower than those in humans, an increased incidence of post-implantation fetal loss and stillbirths, and decreased fetal body weights and ossification. There was also an apparent delay in sexual maturation in rats.

Luspatercept (Reblozyl) (76,000) is given subcutaneously for the treatment of anemia in patients with beta thalassemia who require regular red blood cell transfusions. In rats and rabbits, the drug cause increased embryo-fetal mortality, alteration to growth, and structural defects at exposures (based on AUC) that were about 13 times (rats) and 18 times (rabbits) the maximum recommended human dose.

Pexidartinib (Turalio) (454) is an oral kinase inhibitor that is indicated for the treatment of symptomatic tenosynovial giant cell tumor associated with severe morbidity or functional limitations and not amenable with surgery. In rats and rabbits, the drug caused malformations, increased post-implantation loss, and abortion at exposures nearly equal to the human exposure. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Pitolisant HCl (Wakix) (296) is an histamine-3 receptor antagonist/inverse agonist indicated for the treatment of excessive daytime sleepiness in patients with narcolepsy. The drug has caused maternal and embryofetal toxicity in rats and rabbits at doses greater than and equal to 13 times and greater than 4 times the maximum human dose, respectively. The manufacturer has a pregnancy exposure registry that patients can contact at 1-800-833-7460.

Prabotulinum toxin A (Jeuveau) (900,000) is an acetylcholine release inhibitor and a neuromuscular blocking agent indicated for the temporary improvement in the appearance of moderate to severe glabellar lines associated with corrugator and/or procerus muscle activity. The drug caused no adverse embryo-fetal in rats with doses up to 12 times the human dose.

Risankizumab-rzaa (Skyrizi) (molecular weight unknown), an interleukin-23 antagonist, is used for the treatment of moderate-to-severe plaque psoriasis. In pregnant monkeys, doses that were 20 times the maximum human dose increased fetal/infant loss.

Selinexor (Xpovio) (443) is an oral nuclear export inhibitor given in combination with dexamethasone for the treatment of relapsed or refractory myeloma. At doses lower than those used clinically, the drug caused structural abnormalities and alterations to growth in fetal rats.

Siponimod (Mayzent) (1,149) is an oral sphingosine 1-phosphate receptor modulator. It is indicated for the treatment of relapsing forms of multiple sclerosis. At low doses, the drug caused embryotoxicity and fetotoxicity in rats and rabbits including embryofetal deaths and abortions. The drug was teratogenic in both species.

Solriamfetol (Sunosi) (231) is an oral dopamine and norepinephrine reuptake inhibitor that is indicated to improve wakefulness in adult patients with excessive daytime sleepiness associated with narcolepsy or obstructive sleep apnea. The drug caused maternal and fetal toxicities in rats and rabbits and was teratogenic. The manufacturer has a pregnancy exposure registry to monitor pregnancy outcomes. Health care providers or patients can enroll in the program by calling 1-877-283-6220 or contacting the company.

Tafamidis meglumine (Vyndaqel) (503) and tafamidis (Vyndamax) (308) are indicated for the treatment of the cardiomyopathy of wild type or hereditary transthyretin-mediated amyloidosis to reduce cardiovascular mortality and cardiovascular-related hospitalization. In rabbits and rats, use of the drugs during pregnancy caused birth defects, embryo-fetal mortality, and fetal body weight reduction. Limited available data with Vyndaqel use in human pregnancy at a dose of 20 mg/day have not identified any drug-associated risks for major birth defects, miscarriage, or adverse maternal or fetal outcomes (see package insert).

Tenapanor (Ibsrela) (1,218) is indicated for the treatment of irritable bowel syndrome with constipation. The drug is minimally absorbed systemically, with plasma concentrations below the limit of quantification. No adverse maternal or fetal outcomes in rats or rabbits were observed. As reported by the manufacturer, in a small number of pregnant women, no drug-induced adverse maternal or fetal outcomes were identified.

Triclabendazole (Egaten) (360), an oral anthelmintic, is indicated for the treatment of fascioliasis. The drug was not teratogenic in mice and rabbits.

Trifarotene (Aklief) (460) cream is a retinoid that is indicated for the topical treatment of acne vulgaris. Animal data was related to oral retinoids and it not applicable to this agent. The manufacturer reported that available data from the use of the cream in pregnant women have not identified a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes.

Upadacitinib (Rinvoq) (389) is an oral Janus inhibitor. It is indicated for the treatment of moderate to severe active rheumatoid arthritis in patients who have had an inadequate response or intolerance to methotrexate. The drug caused increases in fetal malformations when given to rats and rabbits during organogenesis.

Voxelotor (Oxbryta) (337) is an oral hemoglobin S polymerization inhibitor indicated for the treatment of sickle cell disease. In rats and rabbits, there was no evidence of adverse developmental outcomes.

Zanubrutinib (Brukinsa) (472), an oral kinase inhibitor, is indicated for the treatment of mantle cell lymphoma. The drug caused embryofetal toxicity in pregnant rats, including malformations. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Breastfeeding

Brexanolone (Zulresso) (319) is indicated for the treatment of postpartum depression. It is given as a continuous IV infusion over 60 hours. The drug, at exposures close to those seen in humans, did not cause structural defects in rabbits and rats, but did cause fetal toxicity. Because patients are at risk of excessive sedation or sudden loss of consciousness when receiving the drug, it is only available through a restricted program called the ZULRESSO REMS. Health care providers are encouraged to register patients by calling the National Pregnancy Registry for Antidepressants at 844-405-6185. To obtain a list of health care facilities enrolled in the program call 844-472-4379.

Nearly all of the above drugs will cross into a woman’s colostrum during the first 48 hours post partum. These amounts should be very small, but not breastfeeding is the best choice.
 

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2019, the Food and Drug Administration approved 42 drugs, 6 of which will not be discussed here because of space limitations: recarbrio, a three-drug combination, containing imipenem, cilastatin, and relebactam; polatuzumab (Polivy) combined with bendamustine and a rituximab product; pretomanid combined with bedaquiline and linezolid; romosozumab (Evenity) for postmenopausal women; and alpelisib (Piqray) for postmenopausal women. In addition, darolutamide (Nubeqa) will not be included because it is indicated for the treatment of patients with prostate cancer. The remaining 36 agents are listed alphabetically below with the trade names in parentheses.

PhotoDisk

The molecular weights (if available), rounded to the nearest whole number, are shown in parentheses. As with nearly all drugs, avoiding these agents in pregnancy is the best choice.

Air polymer-type a intrauterine foam (ExEm Foam), an ultrasound contrast agent, is indicated for sonohysterosalpingography to assess fallopian tube patency in women with known or suspected infertility. Animal studies have not been conducted, and the agent is contraindicated in pregnancy.

Afamelanotide implant (Scenesse) (1,647) is a melanocortin 1 receptor agonist that is indicated to increase pain-free light exposure in adult patients with a history of phototoxic reactions from erythropoietic protoporphyria. The drug caused no embryofetal toxicity in two species of rats. The molecular weight suggests that it will not cross the placenta, at least early in pregnancy.

Alpelisib (Piqray) (441) is a kinase inhibitor that is combined with fulvestrant for the treatment of advanced breast cancer in women and men. The molecular weight suggests that it can cross the human placenta. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Bremelanotide (Vyleesi) (1,025) is indicated for the treatment of premenopausal women with hypoactive sexual disorder. The drug caused fetal harm in dogs and mice. If a pregnant woman is exposed to the drug, health care providers are encouraged to call the VYLEESI Pregnancy Exposure Registry at 877-411-2510.

Brolucizumab (Beovu) (26,000) is a human vascular endothelial growth factor that is indicated for the treatment of neovascular age-related macular degeneration. In animals, it caused malformations, embryofetal resorption, and decreased fetal weight. Other adverse effects were follicular development, corpus luteum function, and fertility.

Caplacizumab (Cablivi) (28,000) is indicated for the treatment of adult patients with acquired thrombotic thrombocytopenia purpura, in combination with plasma exchange and immunosuppressive therapy. If used in pregnancy, there is a risk of hemorrhage in the mother and fetus. In guinea pigs given intramuscular doses of the drug, there was no evidence of adverse developmental outcomes.

Cefiderocol (Fetroja) (3,044) is an IV cephalosporin antibiotic indicated for the treatment of urinary tract infections, including pyelonephritis. The manufacturer states that it should be used in patients 18 years of age or older who have limited or no alternative treatment options. Consistent with other cephalosporins, no developmental adverse effects were observed in rats and mice.

Cenobamate (Xcopri) (268) is indicated for the treatment of partial-onset seizures in adults. In pregnant animals given the drug, there was increased embryo-fetal mortality, decreased fetal and offspring body weight, and neurobehavioral and reproductive impairment in offspring. If a pregnant woman receives this drug, encourage her to enroll in the North American Antiepileptic Drug Pregnancy Registry by calling the toll-free number 1-888-233-2334.

Crizanlizumab (Adakveo) (146,000) is indicated to reduce the frequency of vaso-occlusive crises in patients with sickle cell disease. In monkeys given doses slightly higher than those given to humans, there was increased fetal loss (abortions/stillbirths).

Entrectinib (Rozlytrek) (561) is a kinase inhibitor indicated for the treatment of cancer. The drug was teratogenic in rats. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Erdafitinib (Balversa) (447), a kinase inhibitor, is indicated for the treatment of locally advanced or metastatic urothelial carcinoma. In rats given doses during organogenesis with maternal exposures less than human exposures, the drug was teratogenic and caused embryofetal death. The manufacturer states that women of reproductive potential should use effective contraception during treatment and for 1 month after the last dose. The same advice was provided for male patients with female partners of reproductive potential. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Fedratinib (Inrebic) (616), a kinase inhibitor, is indicated for patients with intermediate-2 or high-risk primary or secondary myelofibrosis. The drug was teratogenic in rats when doses that were about 0.1 times the human exposure based on AUC (area under the curve) at the recommended daily dose during organogenesis. It is contraindicated in pregnancy because it can cause embryofetal toxicity.

Fluorodopa f18 (214) is a radioactive diagnostic agent. It is indicated for use in positron emission tomography to visualize dopaminergic nerve terminals in the striatum for evaluation of adult patients with suspected parkinsonian syndromes. The potential for adverse pregnant outcomes is based on the radiation dose and the gestational timing of exposure.

Givosiran sodium (Givlaari) (17,2460) is an aminolevulinate synthase 1-directed small interfering RNA given subcutaneously. It is indicated for the treatment of adults with acute hepatic porphyria. Doses less than 10 times the human dose in rats and rabbits produced maternal toxicity. In rats there was increased postimplantation loss, and in rats there was skeletal variation (incomplete ossification of pubes).

Golodirsen (Vyondys 53) (8,647) is indicated for the treatment of Duchenne muscular dystrophy given intravenously. There are no human or animal data available to assess the use of this drug during pregnancy.

Istradefylline (Nourianz) (384) is an adenosine receptor antagonist given orally. It is indicated as adjunctive treatment to levodopa/carbidopa in patients with Parkinson’s disease experiencing “off” episodes. In pregnant rats and rabbits, the drug was related to teratogenicity, embryo-fetal and offspring mortality, and growth deficits at clinically relevant exposures.

Lasmiditan (Reyvow) (436), a serotonin receptor agonist, is indicated for acute treatment of migraine with or without aura. In animals, the drug caused increased incidences of fetal defects, increased embryo-fetal and offspring mortality, and decreased fetal body weight at maternal exposures less than (rabbits) or greater than (rat) those observed clinically.

Lefamulin (Xenleta) (568) is an antibacterial agent available for oral and IV administration. They are indicated for the treatment of community-acquired bacterial pneumonia. The drug was teratogenic in rats at systemic exposures lower than those in humans, an increased incidence of post-implantation fetal loss and stillbirths, and decreased fetal body weights and ossification. There was also an apparent delay in sexual maturation in rats.

Luspatercept (Reblozyl) (76,000) is given subcutaneously for the treatment of anemia in patients with beta thalassemia who require regular red blood cell transfusions. In rats and rabbits, the drug cause increased embryo-fetal mortality, alteration to growth, and structural defects at exposures (based on AUC) that were about 13 times (rats) and 18 times (rabbits) the maximum recommended human dose.

Pexidartinib (Turalio) (454) is an oral kinase inhibitor that is indicated for the treatment of symptomatic tenosynovial giant cell tumor associated with severe morbidity or functional limitations and not amenable with surgery. In rats and rabbits, the drug caused malformations, increased post-implantation loss, and abortion at exposures nearly equal to the human exposure. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Pitolisant HCl (Wakix) (296) is an histamine-3 receptor antagonist/inverse agonist indicated for the treatment of excessive daytime sleepiness in patients with narcolepsy. The drug has caused maternal and embryofetal toxicity in rats and rabbits at doses greater than and equal to 13 times and greater than 4 times the maximum human dose, respectively. The manufacturer has a pregnancy exposure registry that patients can contact at 1-800-833-7460.

Prabotulinum toxin A (Jeuveau) (900,000) is an acetylcholine release inhibitor and a neuromuscular blocking agent indicated for the temporary improvement in the appearance of moderate to severe glabellar lines associated with corrugator and/or procerus muscle activity. The drug caused no adverse embryo-fetal in rats with doses up to 12 times the human dose.

Risankizumab-rzaa (Skyrizi) (molecular weight unknown), an interleukin-23 antagonist, is used for the treatment of moderate-to-severe plaque psoriasis. In pregnant monkeys, doses that were 20 times the maximum human dose increased fetal/infant loss.

Selinexor (Xpovio) (443) is an oral nuclear export inhibitor given in combination with dexamethasone for the treatment of relapsed or refractory myeloma. At doses lower than those used clinically, the drug caused structural abnormalities and alterations to growth in fetal rats.

Siponimod (Mayzent) (1,149) is an oral sphingosine 1-phosphate receptor modulator. It is indicated for the treatment of relapsing forms of multiple sclerosis. At low doses, the drug caused embryotoxicity and fetotoxicity in rats and rabbits including embryofetal deaths and abortions. The drug was teratogenic in both species.

Solriamfetol (Sunosi) (231) is an oral dopamine and norepinephrine reuptake inhibitor that is indicated to improve wakefulness in adult patients with excessive daytime sleepiness associated with narcolepsy or obstructive sleep apnea. The drug caused maternal and fetal toxicities in rats and rabbits and was teratogenic. The manufacturer has a pregnancy exposure registry to monitor pregnancy outcomes. Health care providers or patients can enroll in the program by calling 1-877-283-6220 or contacting the company.

Tafamidis meglumine (Vyndaqel) (503) and tafamidis (Vyndamax) (308) are indicated for the treatment of the cardiomyopathy of wild type or hereditary transthyretin-mediated amyloidosis to reduce cardiovascular mortality and cardiovascular-related hospitalization. In rabbits and rats, use of the drugs during pregnancy caused birth defects, embryo-fetal mortality, and fetal body weight reduction. Limited available data with Vyndaqel use in human pregnancy at a dose of 20 mg/day have not identified any drug-associated risks for major birth defects, miscarriage, or adverse maternal or fetal outcomes (see package insert).

Tenapanor (Ibsrela) (1,218) is indicated for the treatment of irritable bowel syndrome with constipation. The drug is minimally absorbed systemically, with plasma concentrations below the limit of quantification. No adverse maternal or fetal outcomes in rats or rabbits were observed. As reported by the manufacturer, in a small number of pregnant women, no drug-induced adverse maternal or fetal outcomes were identified.

Triclabendazole (Egaten) (360), an oral anthelmintic, is indicated for the treatment of fascioliasis. The drug was not teratogenic in mice and rabbits.

Trifarotene (Aklief) (460) cream is a retinoid that is indicated for the topical treatment of acne vulgaris. Animal data was related to oral retinoids and it not applicable to this agent. The manufacturer reported that available data from the use of the cream in pregnant women have not identified a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes.

Upadacitinib (Rinvoq) (389) is an oral Janus inhibitor. It is indicated for the treatment of moderate to severe active rheumatoid arthritis in patients who have had an inadequate response or intolerance to methotrexate. The drug caused increases in fetal malformations when given to rats and rabbits during organogenesis.

Voxelotor (Oxbryta) (337) is an oral hemoglobin S polymerization inhibitor indicated for the treatment of sickle cell disease. In rats and rabbits, there was no evidence of adverse developmental outcomes.

Zanubrutinib (Brukinsa) (472), an oral kinase inhibitor, is indicated for the treatment of mantle cell lymphoma. The drug caused embryofetal toxicity in pregnant rats, including malformations. It is contraindicated in pregnancy because it can cause embryo-fetal toxicity.

Breastfeeding

Brexanolone (Zulresso) (319) is indicated for the treatment of postpartum depression. It is given as a continuous IV infusion over 60 hours. The drug, at exposures close to those seen in humans, did not cause structural defects in rabbits and rats, but did cause fetal toxicity. Because patients are at risk of excessive sedation or sudden loss of consciousness when receiving the drug, it is only available through a restricted program called the ZULRESSO REMS. Health care providers are encouraged to register patients by calling the National Pregnancy Registry for Antidepressants at 844-405-6185. To obtain a list of health care facilities enrolled in the program call 844-472-4379.

Nearly all of the above drugs will cross into a woman’s colostrum during the first 48 hours post partum. These amounts should be very small, but not breastfeeding is the best choice.
 

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

Tuberculosis is one of the top ten causes of death worldwide and the leading cause from a single infectious agent. In the 2012-2017 period, there were more than 9,000 cases of TB each year in the United States. The Centers for Disease Control and Prevention states that untreated TB is a greater hazard to a pregnant woman and her fetus than its treatment.

In the material below, the molecular weights, rounded to the nearest whole number, are shown in parentheses after the drug name. Those less than 1,000 or so suggest that the drug will cross the placenta throughout pregnancy. In the second half of pregnancy, especially in the third trimester, nearly all drugs will cross regardless of their molecular weight.

Para-aminosalicylic acid (Paser) (153) is most frequently used in combination with other agents for the treatment of multidrug-resistant tuberculosis; multidrug-resistant TB (MDR TB) is defined as being caused by TB bacteria that is resistant to at least isoniazid and rifampin, the two most potent TB drugs. The drug has been associated with a marked increased risk of birth defects in some, but not all, studies. Because of this potential risk, the drug is best avoided in the first trimester. The drug is excreted into breast milk, but there are no reports of its use during breastfeeding.

Bedaquiline (Sirturo) (556) is used in combination therapy for patents with multidrug-resistant tuberculosis. One report describing the use of this drug during human pregnancy has been located. Treatment was started in the last 3 weeks of pregnancy and no abnormalities were noted in the child at birth and for 2 years after birth (Emerg Infect Dis. 2017. doi: 10.3201/eid2310.161398). The CDC states that the drug should be used only in a minimum four-drug treatment regimen and administered by direct observation (MMWR Recomm Rep. 2013 Oct 25;62[RR-09]:1-12). The drug probably is excreted into breast milk, but there are no reports of its use during breastfeeding.

Capreomycin (Capastat) (653-669) is a polypeptide antibiotic isolated from Streptomyces capreolus that is given intramuscularly. The human pregnancy data are limited to three reports. The toxicity of capreomycin is similar to aminoglycosides (e.g., cranial nerve VIII and renal) and it should not be used with these agents. The CDC has classified the drug as contraindicated in pregnancy. The drug probably is excreted into breast milk, but there are no reports of its use during breastfeeding.

Cycloserine (Seromycin) (102) is a broad spectrum antibiotic. The human pregnancy data are limited but have not shown embryo-fetal harm. Although the best course is to avoid the drug during gestation, it should not be withheld because of pregnancy if the maternal condition requires the antibiotic. The American Academy of Pediatrics classified cycloserine as compatible with breastfeeding.

Ethambutol (Myambutol) (205) should be used in conjunction with other antituberculosis drugs. The human pregnancy data do not suggest an embryo-fetal risk. A frequently used regimen is ethambutol + isoniazid + rifampin. The American Academy of Pediatrics classified ethambutol as compatible with breastfeeding.

Ethionamide (Trecator) (166) is indicated when Mycobacterium tuberculosis is resistant to isoniazid or rifampin, or when the patient is intolerant to other drugs. Although the animal reproductive data suggest risk, the limited human data suggest that the risk is probably low. If indicated, the drug should not be withheld because of pregnancy. Although the molecular weight suggests that the drug will be excreted into breast milk, no reports describing the amount in milk have been located.

Isoniazid (137) is compatible in pregnancy, even though the molecular weight suggests that it will cross the placenta, because the maternal benefit is much greater than the potential embryo-fetal risk. Although the human data are limited, the molecular weight also suggests that the drug will be excreted into breast milk, but it can be considered probably compatible during breastfeeding. No reports of isoniazid-induced effects in the nursing infant have been located, but the potential for interference with nucleic acid function and for hepatotoxicity may exist.

Pyrazinamide (123) is metabolized to an active metabolite. The molecular weight, low plasma protein binding (10%), and prolonged elimination half-life (9-10 hours) suggest that the drug will cross the placenta throughout pregnancy. The drug has been used in human pregnancy without causing embryo-fetal harm. Similar results, although limited, were reported when the drug was used during breastfeeding.

Rifabutin (Mycobutin) (847) has no reported human pregnancy data, but the animal data suggest low risk. The drug probably crosses the placenta throughout pregnancy. The maternal benefit appears to outweigh the unknown risk to the embryo-fetus, so therapy should not be withheld because of pregnancy. The drug probably is excreted into breast milk.

Rifampin (Rifadin) (823) appears to be compatible in pregnancy. Several reviews and reports have concluded that the drug was not a teratogen and recommended use of the drug with isoniazid and ethambutol. However, prophylactic vitamin K₁ has been recommended to prevent drug-induced hemorrhagic disease of the newborn. There are no data regarding its use during breastfeeding, but it is probably compatible.

Rifapentine (Priftin) (877) was toxic and teratogenic in two animal species at doses close to those used in humans. In a 2018 study, however, the rates of fetal loss in pregnancies of less than 20 weeks (8/54, 15%) and congenital anomalies in live births (1/37, 3%) were within the expected background rates (Ann Am Thorac Soc. 2018 May;15[4]:570-80). There are no data regarding its use during breastfeeding, but it is probably compatible.

The CDC classifies four antituberculosis and one class of drugs as contraindicated in pregnancy. In addition to capreomycin mentioned above, they are amikacin, fluoroquinolones (ciprofloxacin, gemifloxacin, levofloxacin, lomefloxacin, moxifloxacin, ofloxacin), kanamycin, and streptomycin. These ten agents are discussed in the 11th edition of my book “Drugs in Pregnancy and Lactation,” (Wolters Kluwer Health: Riverwood, Il., 2017). If they have to be used, checking this source will provide information that has to be discussed with the patient.
 

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs had no disclosures, except for his book. Email him at obnews@mdedge.com.

Tuberculosis is one of the top ten causes of death worldwide and the leading cause from a single infectious agent. In the 2012-2017 period, there were more than 9,000 cases of TB each year in the United States. The Centers for Disease Control and Prevention states that untreated TB is a greater hazard to a pregnant woman and her fetus than its treatment.

In the material below, the molecular weights, rounded to the nearest whole number, are shown in parentheses after the drug name. Those less than 1,000 or so suggest that the drug will cross the placenta throughout pregnancy. In the second half of pregnancy, especially in the third trimester, nearly all drugs will cross regardless of their molecular weight.

Para-aminosalicylic acid (Paser) (153) is most frequently used in combination with other agents for the treatment of multidrug-resistant tuberculosis; multidrug-resistant TB (MDR TB) is defined as being caused by TB bacteria that is resistant to at least isoniazid and rifampin, the two most potent TB drugs. The drug has been associated with a marked increased risk of birth defects in some, but not all, studies. Because of this potential risk, the drug is best avoided in the first trimester. The drug is excreted into breast milk, but there are no reports of its use during breastfeeding.

Bedaquiline (Sirturo) (556) is used in combination therapy for patents with multidrug-resistant tuberculosis. One report describing the use of this drug during human pregnancy has been located. Treatment was started in the last 3 weeks of pregnancy and no abnormalities were noted in the child at birth and for 2 years after birth (Emerg Infect Dis. 2017. doi: 10.3201/eid2310.161398). The CDC states that the drug should be used only in a minimum four-drug treatment regimen and administered by direct observation (MMWR Recomm Rep. 2013 Oct 25;62[RR-09]:1-12). The drug probably is excreted into breast milk, but there are no reports of its use during breastfeeding.

Capreomycin (Capastat) (653-669) is a polypeptide antibiotic isolated from Streptomyces capreolus that is given intramuscularly. The human pregnancy data are limited to three reports. The toxicity of capreomycin is similar to aminoglycosides (e.g., cranial nerve VIII and renal) and it should not be used with these agents. The CDC has classified the drug as contraindicated in pregnancy. The drug probably is excreted into breast milk, but there are no reports of its use during breastfeeding.

Cycloserine (Seromycin) (102) is a broad spectrum antibiotic. The human pregnancy data are limited but have not shown embryo-fetal harm. Although the best course is to avoid the drug during gestation, it should not be withheld because of pregnancy if the maternal condition requires the antibiotic. The American Academy of Pediatrics classified cycloserine as compatible with breastfeeding.

Ethambutol (Myambutol) (205) should be used in conjunction with other antituberculosis drugs. The human pregnancy data do not suggest an embryo-fetal risk. A frequently used regimen is ethambutol + isoniazid + rifampin. The American Academy of Pediatrics classified ethambutol as compatible with breastfeeding.

Ethionamide (Trecator) (166) is indicated when Mycobacterium tuberculosis is resistant to isoniazid or rifampin, or when the patient is intolerant to other drugs. Although the animal reproductive data suggest risk, the limited human data suggest that the risk is probably low. If indicated, the drug should not be withheld because of pregnancy. Although the molecular weight suggests that the drug will be excreted into breast milk, no reports describing the amount in milk have been located.

Isoniazid (137) is compatible in pregnancy, even though the molecular weight suggests that it will cross the placenta, because the maternal benefit is much greater than the potential embryo-fetal risk. Although the human data are limited, the molecular weight also suggests that the drug will be excreted into breast milk, but it can be considered probably compatible during breastfeeding. No reports of isoniazid-induced effects in the nursing infant have been located, but the potential for interference with nucleic acid function and for hepatotoxicity may exist.

Pyrazinamide (123) is metabolized to an active metabolite. The molecular weight, low plasma protein binding (10%), and prolonged elimination half-life (9-10 hours) suggest that the drug will cross the placenta throughout pregnancy. The drug has been used in human pregnancy without causing embryo-fetal harm. Similar results, although limited, were reported when the drug was used during breastfeeding.

Rifabutin (Mycobutin) (847) has no reported human pregnancy data, but the animal data suggest low risk. The drug probably crosses the placenta throughout pregnancy. The maternal benefit appears to outweigh the unknown risk to the embryo-fetus, so therapy should not be withheld because of pregnancy. The drug probably is excreted into breast milk.

Rifampin (Rifadin) (823) appears to be compatible in pregnancy. Several reviews and reports have concluded that the drug was not a teratogen and recommended use of the drug with isoniazid and ethambutol. However, prophylactic vitamin K₁ has been recommended to prevent drug-induced hemorrhagic disease of the newborn. There are no data regarding its use during breastfeeding, but it is probably compatible.

Rifapentine (Priftin) (877) was toxic and teratogenic in two animal species at doses close to those used in humans. In a 2018 study, however, the rates of fetal loss in pregnancies of less than 20 weeks (8/54, 15%) and congenital anomalies in live births (1/37, 3%) were within the expected background rates (Ann Am Thorac Soc. 2018 May;15[4]:570-80). There are no data regarding its use during breastfeeding, but it is probably compatible.

The CDC classifies four antituberculosis and one class of drugs as contraindicated in pregnancy. In addition to capreomycin mentioned above, they are amikacin, fluoroquinolones (ciprofloxacin, gemifloxacin, levofloxacin, lomefloxacin, moxifloxacin, ofloxacin), kanamycin, and streptomycin. These ten agents are discussed in the 11th edition of my book “Drugs in Pregnancy and Lactation,” (Wolters Kluwer Health: Riverwood, Il., 2017). If they have to be used, checking this source will provide information that has to be discussed with the patient.
 

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs had no disclosures, except for his book. Email him at obnews@mdedge.com.

Tuberculosis is one of the top ten causes of death worldwide and the leading cause from a single infectious agent. In the 2012-2017 period, there were more than 9,000 cases of TB each year in the United States. The Centers for Disease Control and Prevention states that untreated TB is a greater hazard to a pregnant woman and her fetus than its treatment.

In the material below, the molecular weights, rounded to the nearest whole number, are shown in parentheses after the drug name. Those less than 1,000 or so suggest that the drug will cross the placenta throughout pregnancy. In the second half of pregnancy, especially in the third trimester, nearly all drugs will cross regardless of their molecular weight.

Para-aminosalicylic acid (Paser) (153) is most frequently used in combination with other agents for the treatment of multidrug-resistant tuberculosis; multidrug-resistant TB (MDR TB) is defined as being caused by TB bacteria that is resistant to at least isoniazid and rifampin, the two most potent TB drugs. The drug has been associated with a marked increased risk of birth defects in some, but not all, studies. Because of this potential risk, the drug is best avoided in the first trimester. The drug is excreted into breast milk, but there are no reports of its use during breastfeeding.

Bedaquiline (Sirturo) (556) is used in combination therapy for patents with multidrug-resistant tuberculosis. One report describing the use of this drug during human pregnancy has been located. Treatment was started in the last 3 weeks of pregnancy and no abnormalities were noted in the child at birth and for 2 years after birth (Emerg Infect Dis. 2017. doi: 10.3201/eid2310.161398). The CDC states that the drug should be used only in a minimum four-drug treatment regimen and administered by direct observation (MMWR Recomm Rep. 2013 Oct 25;62[RR-09]:1-12). The drug probably is excreted into breast milk, but there are no reports of its use during breastfeeding.

Capreomycin (Capastat) (653-669) is a polypeptide antibiotic isolated from Streptomyces capreolus that is given intramuscularly. The human pregnancy data are limited to three reports. The toxicity of capreomycin is similar to aminoglycosides (e.g., cranial nerve VIII and renal) and it should not be used with these agents. The CDC has classified the drug as contraindicated in pregnancy. The drug probably is excreted into breast milk, but there are no reports of its use during breastfeeding.

Cycloserine (Seromycin) (102) is a broad spectrum antibiotic. The human pregnancy data are limited but have not shown embryo-fetal harm. Although the best course is to avoid the drug during gestation, it should not be withheld because of pregnancy if the maternal condition requires the antibiotic. The American Academy of Pediatrics classified cycloserine as compatible with breastfeeding.

Ethambutol (Myambutol) (205) should be used in conjunction with other antituberculosis drugs. The human pregnancy data do not suggest an embryo-fetal risk. A frequently used regimen is ethambutol + isoniazid + rifampin. The American Academy of Pediatrics classified ethambutol as compatible with breastfeeding.

Ethionamide (Trecator) (166) is indicated when Mycobacterium tuberculosis is resistant to isoniazid or rifampin, or when the patient is intolerant to other drugs. Although the animal reproductive data suggest risk, the limited human data suggest that the risk is probably low. If indicated, the drug should not be withheld because of pregnancy. Although the molecular weight suggests that the drug will be excreted into breast milk, no reports describing the amount in milk have been located.

Isoniazid (137) is compatible in pregnancy, even though the molecular weight suggests that it will cross the placenta, because the maternal benefit is much greater than the potential embryo-fetal risk. Although the human data are limited, the molecular weight also suggests that the drug will be excreted into breast milk, but it can be considered probably compatible during breastfeeding. No reports of isoniazid-induced effects in the nursing infant have been located, but the potential for interference with nucleic acid function and for hepatotoxicity may exist.

Pyrazinamide (123) is metabolized to an active metabolite. The molecular weight, low plasma protein binding (10%), and prolonged elimination half-life (9-10 hours) suggest that the drug will cross the placenta throughout pregnancy. The drug has been used in human pregnancy without causing embryo-fetal harm. Similar results, although limited, were reported when the drug was used during breastfeeding.

Rifabutin (Mycobutin) (847) has no reported human pregnancy data, but the animal data suggest low risk. The drug probably crosses the placenta throughout pregnancy. The maternal benefit appears to outweigh the unknown risk to the embryo-fetus, so therapy should not be withheld because of pregnancy. The drug probably is excreted into breast milk.

Rifampin (Rifadin) (823) appears to be compatible in pregnancy. Several reviews and reports have concluded that the drug was not a teratogen and recommended use of the drug with isoniazid and ethambutol. However, prophylactic vitamin K₁ has been recommended to prevent drug-induced hemorrhagic disease of the newborn. There are no data regarding its use during breastfeeding, but it is probably compatible.

Rifapentine (Priftin) (877) was toxic and teratogenic in two animal species at doses close to those used in humans. In a 2018 study, however, the rates of fetal loss in pregnancies of less than 20 weeks (8/54, 15%) and congenital anomalies in live births (1/37, 3%) were within the expected background rates (Ann Am Thorac Soc. 2018 May;15[4]:570-80). There are no data regarding its use during breastfeeding, but it is probably compatible.

The CDC classifies four antituberculosis and one class of drugs as contraindicated in pregnancy. In addition to capreomycin mentioned above, they are amikacin, fluoroquinolones (ciprofloxacin, gemifloxacin, levofloxacin, lomefloxacin, moxifloxacin, ofloxacin), kanamycin, and streptomycin. These ten agents are discussed in the 11th edition of my book “Drugs in Pregnancy and Lactation,” (Wolters Kluwer Health: Riverwood, Il., 2017). If they have to be used, checking this source will provide information that has to be discussed with the patient.
 

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs had no disclosures, except for his book. Email him at obnews@mdedge.com.

According to the World Health Organization, there were about 219 million cases of malaria and an estimated 660,000 deaths in 2010. Although huge, this was a 26% decrease from the rates in 2000. Six countries in Africa account for 47% of malaria cases: Cote d’Ivoire, Democratic Republic of the Congo, Mozambique, Nigeria, Uganda, and the United Republic of Tanzania. The second-most affected region in the world is Southeast Asia, which includes Myanmar, India, and Indonesia. In comparison, about 1,500 malaria cases and 5 deaths are reported annually in the United States, mostly from returned travelers.

Courtesy NIAID

It is extremely important for any woman that is or might be pregnant or breastfeeding to take an antimalarial drug for protection if they will be traveling in any of the above regions. Malaria during pregnancy increases the risk for adverse pregnancy outcomes, including maternal anemia, prematurity, spontaneous abortion, and stillbirth.

As stated by the Centers for Disease Control and Prevention, no antimalarial agent is 100% protective. Therefore, whatever agent is used must be combined with personal protective measures such as wearing insect repellent, long sleeves, and long pants; sleeping in a mosquito-free setting; or using an insecticide-treated bed net.

There are nine antimalarial drugs available in the United States.

Atovaquone/Proguanil Hcl (Malarone and as generic)

This agent is good for last-minute travelers because the drug is started 1-2 days before traveling to areas where malaria transmission occurs. The combination can be classified as compatible in pregnancy. No reports in breastfeeding with atovaquone or the combination have been found. Proguanil is not available in the United States as a single agent.

Chloroquine (generic)

This is the drug of choice to prevent and treat sensitive malaria species during pregnancy. The drug crosses the placenta producing fetal concentrations that are similar to those in the mother. The drug appears to be low risk for embryo-fetal harm.

It is compatible in breastfeeding.

Dapsone (generic)

This agent does not appear to represent a major risk of harm to the fetus. Although it has been used in combination with pyrimethamine (an antiparasitic) or trimethoprim (an antibiotic) to prevent malaria, the efficacy of the combination has not been confirmed.

In breastfeeding, there is one case of mild hemolytic anemia in the mother and her breastfeeding infant that may have been caused by the drug.

Hydroxychloroquine (generic)

This agent is used for the treatment of malaria, systemic erythematosus, and rheumatoid arthritis. For antimalarial prophylaxis, 400 mg/week appears to be low risk for embryo-fetal harm. Doses used to treat malaria have been 200-400 mg/day.

Because very low concentrations of the drug have been found in breast milk, breastfeeding is probably compatible.

Mefloquine (generic)

This agent is a quinoline-methanol agent that does not appear to cause embryo-fetal harm based on a large number of pregnancy exposures.

There are no reports of its use while breastfeeding.

Primaquine (generic)

This agent is best avoided in pregnancy. There is no human pregnancy data, but it may cause hemolytic anemia in patients with glucose-6-phosphate dehydrogenase deficiency (G6PD). Because the fetus is relatively G6PD deficient, it is best avoided in pregnancy regardless of the mother’s status.

There are no reports describing the use of the drug during lactation. Both the mother and baby should be tested for G6PD deficiency before the drug is used during breastfeeding.

Pyrimethamine (generic)

This agent has been used for the treatment or prophylaxis of malaria. Most studies have found this agent to be relatively safe and effective.

It is excreted into breast milk and has been effective in eliminating malaria parasites from breastfeeding infants.

Quinidine (generic)

Reports linking the use of this agent with congenital defects have not been found. Although the drug has data on its use as an antiarrhythmic, its published use to treat malaria is limited.

The drug is excreted into breast milk, but there are no reports of its during breastfeeding.

Quinine (generic)

This agent has a large amount of human pregnancy data (more than 1,000 exposures) that found no increased risk of birth defects. The drug has been replaced by newer agents but still may be used for chloroquine-resistant malaria.

The drug appears to be compatible during breastfeeding.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

According to the World Health Organization, there were about 219 million cases of malaria and an estimated 660,000 deaths in 2010. Although huge, this was a 26% decrease from the rates in 2000. Six countries in Africa account for 47% of malaria cases: Cote d’Ivoire, Democratic Republic of the Congo, Mozambique, Nigeria, Uganda, and the United Republic of Tanzania. The second-most affected region in the world is Southeast Asia, which includes Myanmar, India, and Indonesia. In comparison, about 1,500 malaria cases and 5 deaths are reported annually in the United States, mostly from returned travelers.

Courtesy NIAID

It is extremely important for any woman that is or might be pregnant or breastfeeding to take an antimalarial drug for protection if they will be traveling in any of the above regions. Malaria during pregnancy increases the risk for adverse pregnancy outcomes, including maternal anemia, prematurity, spontaneous abortion, and stillbirth.

As stated by the Centers for Disease Control and Prevention, no antimalarial agent is 100% protective. Therefore, whatever agent is used must be combined with personal protective measures such as wearing insect repellent, long sleeves, and long pants; sleeping in a mosquito-free setting; or using an insecticide-treated bed net.

There are nine antimalarial drugs available in the United States.

Atovaquone/Proguanil Hcl (Malarone and as generic)

This agent is good for last-minute travelers because the drug is started 1-2 days before traveling to areas where malaria transmission occurs. The combination can be classified as compatible in pregnancy. No reports in breastfeeding with atovaquone or the combination have been found. Proguanil is not available in the United States as a single agent.

Chloroquine (generic)

This is the drug of choice to prevent and treat sensitive malaria species during pregnancy. The drug crosses the placenta producing fetal concentrations that are similar to those in the mother. The drug appears to be low risk for embryo-fetal harm.

It is compatible in breastfeeding.

Dapsone (generic)

This agent does not appear to represent a major risk of harm to the fetus. Although it has been used in combination with pyrimethamine (an antiparasitic) or trimethoprim (an antibiotic) to prevent malaria, the efficacy of the combination has not been confirmed.

In breastfeeding, there is one case of mild hemolytic anemia in the mother and her breastfeeding infant that may have been caused by the drug.

Hydroxychloroquine (generic)

This agent is used for the treatment of malaria, systemic erythematosus, and rheumatoid arthritis. For antimalarial prophylaxis, 400 mg/week appears to be low risk for embryo-fetal harm. Doses used to treat malaria have been 200-400 mg/day.

Because very low concentrations of the drug have been found in breast milk, breastfeeding is probably compatible.

Mefloquine (generic)

This agent is a quinoline-methanol agent that does not appear to cause embryo-fetal harm based on a large number of pregnancy exposures.

There are no reports of its use while breastfeeding.

Primaquine (generic)

This agent is best avoided in pregnancy. There is no human pregnancy data, but it may cause hemolytic anemia in patients with glucose-6-phosphate dehydrogenase deficiency (G6PD). Because the fetus is relatively G6PD deficient, it is best avoided in pregnancy regardless of the mother’s status.

There are no reports describing the use of the drug during lactation. Both the mother and baby should be tested for G6PD deficiency before the drug is used during breastfeeding.

Pyrimethamine (generic)

This agent has been used for the treatment or prophylaxis of malaria. Most studies have found this agent to be relatively safe and effective.

It is excreted into breast milk and has been effective in eliminating malaria parasites from breastfeeding infants.

Quinidine (generic)

Reports linking the use of this agent with congenital defects have not been found. Although the drug has data on its use as an antiarrhythmic, its published use to treat malaria is limited.

The drug is excreted into breast milk, but there are no reports of its during breastfeeding.

Quinine (generic)

This agent has a large amount of human pregnancy data (more than 1,000 exposures) that found no increased risk of birth defects. The drug has been replaced by newer agents but still may be used for chloroquine-resistant malaria.

The drug appears to be compatible during breastfeeding.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

According to the World Health Organization, there were about 219 million cases of malaria and an estimated 660,000 deaths in 2010. Although huge, this was a 26% decrease from the rates in 2000. Six countries in Africa account for 47% of malaria cases: Cote d’Ivoire, Democratic Republic of the Congo, Mozambique, Nigeria, Uganda, and the United Republic of Tanzania. The second-most affected region in the world is Southeast Asia, which includes Myanmar, India, and Indonesia. In comparison, about 1,500 malaria cases and 5 deaths are reported annually in the United States, mostly from returned travelers.

Courtesy NIAID

It is extremely important for any woman that is or might be pregnant or breastfeeding to take an antimalarial drug for protection if they will be traveling in any of the above regions. Malaria during pregnancy increases the risk for adverse pregnancy outcomes, including maternal anemia, prematurity, spontaneous abortion, and stillbirth.

As stated by the Centers for Disease Control and Prevention, no antimalarial agent is 100% protective. Therefore, whatever agent is used must be combined with personal protective measures such as wearing insect repellent, long sleeves, and long pants; sleeping in a mosquito-free setting; or using an insecticide-treated bed net.

There are nine antimalarial drugs available in the United States.

Atovaquone/Proguanil Hcl (Malarone and as generic)

This agent is good for last-minute travelers because the drug is started 1-2 days before traveling to areas where malaria transmission occurs. The combination can be classified as compatible in pregnancy. No reports in breastfeeding with atovaquone or the combination have been found. Proguanil is not available in the United States as a single agent.

Chloroquine (generic)

This is the drug of choice to prevent and treat sensitive malaria species during pregnancy. The drug crosses the placenta producing fetal concentrations that are similar to those in the mother. The drug appears to be low risk for embryo-fetal harm.

It is compatible in breastfeeding.

Dapsone (generic)

This agent does not appear to represent a major risk of harm to the fetus. Although it has been used in combination with pyrimethamine (an antiparasitic) or trimethoprim (an antibiotic) to prevent malaria, the efficacy of the combination has not been confirmed.

In breastfeeding, there is one case of mild hemolytic anemia in the mother and her breastfeeding infant that may have been caused by the drug.

Hydroxychloroquine (generic)

This agent is used for the treatment of malaria, systemic erythematosus, and rheumatoid arthritis. For antimalarial prophylaxis, 400 mg/week appears to be low risk for embryo-fetal harm. Doses used to treat malaria have been 200-400 mg/day.

Because very low concentrations of the drug have been found in breast milk, breastfeeding is probably compatible.

Mefloquine (generic)

This agent is a quinoline-methanol agent that does not appear to cause embryo-fetal harm based on a large number of pregnancy exposures.

There are no reports of its use while breastfeeding.

Primaquine (generic)

This agent is best avoided in pregnancy. There is no human pregnancy data, but it may cause hemolytic anemia in patients with glucose-6-phosphate dehydrogenase deficiency (G6PD). Because the fetus is relatively G6PD deficient, it is best avoided in pregnancy regardless of the mother’s status.

There are no reports describing the use of the drug during lactation. Both the mother and baby should be tested for G6PD deficiency before the drug is used during breastfeeding.

Pyrimethamine (generic)

This agent has been used for the treatment or prophylaxis of malaria. Most studies have found this agent to be relatively safe and effective.

It is excreted into breast milk and has been effective in eliminating malaria parasites from breastfeeding infants.

Quinidine (generic)

Reports linking the use of this agent with congenital defects have not been found. Although the drug has data on its use as an antiarrhythmic, its published use to treat malaria is limited.

The drug is excreted into breast milk, but there are no reports of its during breastfeeding.

Quinine (generic)

This agent has a large amount of human pregnancy data (more than 1,000 exposures) that found no increased risk of birth defects. The drug has been replaced by newer agents but still may be used for chloroquine-resistant malaria.

The drug appears to be compatible during breastfeeding.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2018, the Food and Drug Administration approved a record 58 new drugs for humans. One of these agents, Annovera (segesterone acetate and ethinyl estradiol), is a vaginal ring to prevent pregnancy and is not relevant in this article. A second drug, Asparlas (calaspargase pegol-mknl), indicated to treat acute lymphoblastic leukemia, has not yet been released by its manufacturer. The agents with molecular weights (MW) less than 1,000 probably cross the placenta, but nearly all, regardless of MW, will cross in the second half of pregnancy.

seb_ra/iStock/Getty Images

There is no human pregnancy data for these agents, but there are five drugs included in pregnancy registries. However, it will take some time before the outcomes of these drugs are published. The routine absence of pregnancy data for most drugs was pointed out in a reference that I coauthored (“Should pregnant women be included in phase 4 clinical drug trials?” Am J Obstet Gynecol. 2015 Dec;213[6]:810-5). The article makes a strong argument for including some drugs in these trials.

Amyloidosis

Onpattro (patisiran) is indicated for the treatment of the polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults. The drug caused embryo-fetal death and reduced fetal body weight in rabbits at doses also associated with maternal toxicity. No developmental toxicity was observed in rats.

Anti-infectives

Aemcolo (rifamycin), which has a MW of 720, is indicated for treatment of travelers’ diarrhea caused by noninvasive strains of Escherichia coli. No adverse fetal effects were observed in rats and rabbits that received close to human doses.

Krintafel (tafenoquine) is an antimalarial agent that is used to prevent relapse in patients who are receiving appropriate antimalarial therapy for Plasmodium vivax infection. The drug may cause hemolytic anemia in a fetus deficient in glucose-6-phosphate dehydrogenase. In rabbits, the drug caused dose-related abortions and maternal toxicity was observed in rabbits and rats. Treatment with this drug in pregnancy is not recommended, according to the manufacturer.

Tpoxx (tecovirimat monohydrate), which has a MW of about 394, is indicated for the treatment of smallpox disease. The drug did not cause embryo-fetal toxicity in pregnant mice and rabbits, but the maximum exposure in rabbits was only 0.4 times the human exposure.

Xofluza (baloxavir marboxil), which has a MW of about 572, is a prodrug that is converted by hydrolysis to baloxavir. It is indicated for the treatment of acute uncomplicated influenza. No adverse developmental effects were observed in rats and rabbits.

Zemdri (plazomicin), which has a MW of about 593, is an aminoglycoside indicated for the treatment of complicated urinary tract infections including pyelonephritis. The drug did not cause fetal harm in rats and rabbits at doses that did not cause maternal toxicity; however, prolonged use of an aminoglycoside (such as streptomycin) has caused irreversible, bilateral congenital deafness in children exposed in utero to prolonged use and is a potential complication.

Three new drugs in 2018 are indicated for treating HIV-1:

Biktarvy is a three-drug combination that includes bictegravir, emtricitabine, and tenofovir. The latter two drugs are included in the 11th edition of my book (“Drugs in Pregnancy and Lactation,” 11th ed. [Riverwoods, Ill.: Wolters Kluwer, 2017) and are not included here. Both are classified as compatible in pregnancy. Bictegravir has a MW of about 471. No adverse embryo-fetal effects in rats and rabbits were observed with this agent.

Trogarzo (ibalizumab-uiyk), which has a MW of about 150,000, is a monoclonal antibody antiretroviral agent used in combination with other antiretrovirals. There are no animal data. Although the MW is very high, monoclonal antibodies are transported across the placenta as pregnancy progresses.

Pifeltro (doravirine), which has a MW of about 426, is a nonnucleoside reverse transcriptase inhibitor used in combination with other antiretroviral agents for the treatment of HIV-1. The drug caused no significant toxicologic effects on embryo-fetal rats and rabbits.

If Biktarvy, Pifeltro, or Trogarzo are used in pregnancy, health care providers are encouraged to register the patient in the Antiretroviral Pregnancy Registry by calling 1-800-258-4263.

There are three new agents in the tetracycline class.

Nuzyra (omadacycline), which has a MW of about 729, is for community-acquired bacterial pneumonia and acute bacterial skin and skin structure infections.

Seysara (sarecycline), which has a MW of about 524, is for inflammatory lesions of nonnodular, moderate to severe acne vulgaris.

Xerava (eravacycline), which has a MW of about 632, is for complicated intra-abdominal infection.

The various dose-related toxicities observed with the three drugs in rats and rabbits included maternal deaths; increased postimplantation loss; reduced fetal body weights; delays in skeletal ossification; and fetal malformations of the skeleton, heart, and lung. Use of these drugs in the last half of pregnancy may cause permanent discoloration of the teeth and enamel hypoplasia, as well as inhibition of bone growth.

Antilipemic agents

Crysvita (burosumab-twza), which has a MW of about 147,000, is a fibroblast growth factor–blocking antibody indicated for the treatment of X-linked hypophosphatemia. In pregnant cynomolgus monkeys, doses slightly higher than the human dose were not teratogenic. The drug was detected in fetal serum indicating that it crossed the monkey placenta.

Tegsedi (inotersen), which has a MW of about 7,601, is an amyloidosis inhibitor used for polyneuropathy of hereditary transthyretin-mediated amyloidosis. It is available only through a restricted program. The drug was not teratogenic in mice and rabbits; however, it does decrease vitamin A levels, so supplementation with the vitamin is recommended.

Antineoplastics

The manufacturers recommend avoiding these drugs during pregnancy. Effective contraception should be used.

Daurismo (glasdegib), which has a MW of about 491, is a hedgehog pathway inhibitor indicated in combination with low-dose cytarabine for newly diagnosed acute myeloid leukemia (AML). The drug caused embryotoxicity, fetotoxicity, and teratogenicity in rats and rabbits at doses less than the human dose.

Erleada (apalutamide), which has a MW of about 477, is an androgen receptor inhibitor indicated for nonmetastatic, castration-resistant prostate cancer. Animal studies were not conducted because the drug should not be used in females.

Elzonris (tagraxofusp-erzs), which has a MW of 57,695, is a cytotoxin indicated for the treatment of blastic plasmacytoid dendritic cell neoplasm. Animal studies have not been conducted.

Lumoxiti (moxetumomab pasudotox–tdfk) which as a MW of about 63,000, is indicated for relapsed or refractory hairy cell leukemia. Studies have not been conducted in pregnant animals. Two life-threatening outcomes have occurred with the drug: capillary leak syndrome and hemolytic uremic syndrome. The drug should be discontinued if either occurs.

Lutathera (lutetium Lu 177 dotatate), which has a MW of about 1,610, is a radiolabeled somatostatin analogue given as a single intravenous dose every 8 weeks for four doses for the treatment of gastroenteropancreatic neuroendocrine tumors. Reproductive studies in animals have not been conducted. However, all radiopharmaceuticals have the potential to cause embryo-fetal harm. They also can cause infertility in males and females.

Talzenna (talazoparib), which has a MW of about 553, is a poly (ADP-ribose) polymerase inhibitor indicated for the treatment of certain types of breast cancer. At doses much less then the human dose, the drug caused fetal malformations and embryo-fetal death in rats.

Tibsovo (ivosidenib), which has a MW of 583, is an isocitrate dehydrogenase 1 inhibitor used for patients with relapsed or refractory AML. The drug caused embryo-fetal toxicity in rats and rabbits at doses slighter higher than the human dose.

There are seven new kinase inhibitors.

Braftovi (encorafenib), which has a MW of 540, is indicated in combination with Mektovi for patients with a specific type of metastatic melanoma. The drug caused embryo-fetal toxicity in rats and rabbits.

Copiktra (duvelisib), which has a MW of about 435, is indicated for treatment of chronic lymphocytic leukemia and follicular lymphoma. In rats and rabbits, the drug caused embryo-fetal death, lower fetal weights, and malformations.

Lorbrena (lorlatinib), which has a MW of about 406, is given for the treatment of metastatic non–small cell lung cancer. In rats and rabbits, the drug caused abortions, decreased fetal body weight, and major malformations.

Mektovi (binimetinib), which has a MW of about 441, is used in combination with Braftovi for patients with a specific type of melanoma. The drug was embryotoxic and abortifacient in rabbits.

Vitrakvi (larotrectinib), which has a MW of about 527, is used for patients with solid tumors. Studies in rats revealed fetal anasarca (extreme generalized edema) and omphalocele in rabbits.

Vizimpro (dacomitinib), which has a MW of about 488, is indicated for metastatic non–small cell lung cancer. The drug caused embryo-fetal toxicity in rats and mice.

Xospata (gilteritinib), which has a MW of about 1,222, is indicated for relapsed or refractory AML. In rats, the drug caused embryo-fetal death, suppressed fetal growth, and caused multiple malformations.

Three drugs are classified as monoclonal antibodies.

Gamifant (emapalumab), which has a MW of about 148,000, is indicated for primary hemophagocytic lymphohistiocytosis. A murine surrogate antimouse antibody was given to pregnant mice throughout gestation and no fetal harm was observed.

Libtayo (cemiplimab-rwlc), which has a MW of 146,000, is indicated for patients with metastatic or locally advanced cutaneous squamous cell carcinoma. Animal reproduction studies have not been conducted; however, based on its mechanism, increased rates of abortion or stillbirth may occur if the drug is used in human pregnancy.

Poteligeo (mogamulizumab-kpkc), which has a MW of about 149,000, is given for relapsed/refractory mycosis fungoides or Sézary syndrome. In pregnant monkeys, there was no embryo-fetal lethality, teratogenicity, fetal growth restriction, spontaneous abortion, or increased fetal death.

Central nervous system

There are three antimigraine agents that are monoclonal antibodies given as a subcutaneous injection.

Aimovig (erenumab-aooe), which has a MW of about 150,000, caused no adverse effects in monkey offspring.

Ajovy (fremanezumab-vfrm), which has a MW of about 148,000, had no adverse effect in rat and rabbit offspring.

Emgality (galcanezumab-gnlm), which has a MW of about 147,000, produced no adverse effects in rat and rabbit offspring.

Diacomit (stiripentol), which has a MW of about 234, is an anticonvulsant used to treat seizures associated with Dravet syndrome. The drug caused severe embryo-fetal toxicity in mice, rabbits, and rats. The drug is included in the North American Antiepileptic Drug (NAAED) Pregnancy Registry. Patients can enroll themselves by calling the toll-free number 1-888-233-2334 or visiting http://aedpregnancyregistry.org/.

Epidiolex (cannabidiol), which has a MW of about 314, is an anticonvulsant indicated for the treatment of seizures associated with Lennox-Gastaut syndrome or Dravet syndrome. In pregnant rats, doses up to about 16 times the recommended human dose (RHD) caused no embryo-fetal adverse effects. The drug caused decreased fetal body weights, increased fetal structural variations, and maternal toxicity when the drug was given to pregnant rabbits throughout organogenesis. The no-effect dose for embryo-fetal toxicity was less than the human dose. Patients can enroll themselves in the NAAED Pregnancy Registry by calling the toll-free number 1-888-233-2334 or visiting http://aedpregnancyregistry.org/.

Firdapse (amifampridine), a potassium channel blocker with a MW of about 201, is used for the treatment of Lambert-Eaton myasthenic syndrome. No adverse effects on embryo-fetal development were observed in rats and rabbits given the drug throughout organogenesis. However, in rats given the drug throughout pregnancy and lactation, there was an increase in stillbirths and pup deaths, reduced pup weight, and delayed sexual development in female pups.

Lucemyra (lofexidine), which has a MW of about 296, is used to mitigate opioid withdrawal symptoms to facilitate abrupt opioid discontinuation in adults. The drug caused severe toxicity in the fetuses of rats and rabbits.

Olumiant (baricitinib), which has a MW of about 371, is a Janus kinase inhibitor indicated for the treatment of rheumatoid arthritis. The drug was teratogenic in pregnant rats given doses about 20 times greater than the maximum RHD based on area under the curve. In rabbits, embryo death and rib anomalies were observed with doses 84 times greater than the maximum RHD, but no developmental toxicity was seen with doses 12 times greater than the maximum RHD.

Orilissa (elagolix), which has a MW of about 654, is a gonadotropin-releasing hormone receptor antagonist indicated for the management of pain associated with endometriosis. The drug caused abortions in rats and rabbits. Because the drug may increase the risk of early pregnancy loss, the manufacturer classifies it as contraindicated in pregnancy.

Dermatologic agents

Ilumya (tildrakizumab), which has a MW of about 147,000, is given by subcutaneous injection for the treatment of moderate to severe plaque psoriasis. When given during organogenesis in monkeys, no maternal or embryo-fetal toxicities were observed. However, when given throughout pregnancy a few neonatal deaths occurred, but the clinical significance of these nonclinical findings were unknown.

Fabry disease

Galafold (migalastat), which has a MW of about 200, is an alpha-galactosidase A pharmacologic chaperone indicated for the treatment of Fabry disease. Three pregnant women with Fabry disease were exposed to the drug in clinical studies but no information was provided on the pregnancy outcomes. No adverse developmental effects were observed in pregnant rats and rabbits.

Gastrointestinal agents

Akynzeo (netupitant or fosnetupitant palonosetron), which have MWs of about 579, 333, and 762, respectively, is available as an oral capsule (netupitant + palonosetron) and as an intravenous formulation (fosnetupitant + palonosetron). They are indicated, in combination with dexamethasone, for the prevention of nausea and vomiting related to cancer chemotherapy. Netupitant and fosnetupitant produced no embryo-fetal adverse effects in rats but were toxic to rabbit embryos. Palonosetron caused no embryo-fetal adverse effects in rats and rabbits.

Motegrity (prucalopride), which has a MW of about 486, is indicated for chronic idiopathic constipation. No adverse embryo-fetal developmental effects were observed in rats and rabbits.

Hematologic agents

Doptelet (avatrombopag), which has a MW of about 766, is indicated for the treatment of thrombocytopenia in adult patients with chronic liver disease who are scheduled to undergo a procedure. No embryo-fetal effects were observed in rats, but in rabbits the drug was associated with spontaneous abortions.

Lokelma (sodium zirconium cyclosilicate) is a nonabsorbed zirconium silicate that exchanges potassium for hydrogen and sodium. Animal studies have not been conducted. Because it is not absorbed, it is not expected to result in fetal exposure to the drug.

Mulpleta (lusutrombopag), which has a MW of about 592, a thrombopoietin receptor agonist, is indicated for the treatment of thrombocytopenia in patients with chronic liver disease. High levels of the drug in pregnant rats were associated with adverse developmental outcomes. No adverse embryo-fetal effects were seen in pregnant rabbits.

Palynziq (pegvaliase-pqpz), which has a MW of about 1,000,000, is a phenylalanine-metabolizing enzyme indicated to reduce blood phenylalanine concentrations in patients with phenylketonuria. In pregnant rats, the drug caused an increase in skeletal variations. In rabbits, the drug caused a high incidence of multiple malformations.

Takhzyro (lanadelumab-flyo), which has a MW of about 49,000, is a monoclonal antibody indicated for prophylaxis to prevent attacks of hereditary angioedema. The drug caused no fetal harm in monkeys.

Tavalisse (fostamatinib disodium hexahydrate), which has a MW of about 733, is a kinase inhibitor used for the treatment of thrombocytopenia. In pregnant rats and rabbits, the drug caused adverse developmental outcomes including embryo-fetal mortality, lower fetal weights, and structural anomalies.

Ultomiris (ravulizumab), which has a MW of about 148,000, is a humanized monoclonal antibody indicated for adult patients with paroxysmal nocturnal hemoglobinuria. In mice, the drug was associated with increased rates of developmental abnormalities and an increased rate of dead and moribund offspring.

Immunologic agent

Revcovi (elapegademase-lvlr), which has a MW of about 113,000, is a recombinant adenosine deaminase indicated for the treatment of adenosine deaminase severe combined immune deficiency. Animal studies in pregnancy have not been conducted.

Nutrient/Nutritional supplement

Fish oil is indicated as a source of calories and fatty acids in pediatric patients with parenteral nutrition-associated cholestasis. Animal reproduction studies have not been conducted. It is doubtful if this product will be used in pregnancy.

Ophthalmic – nerve growth factor

Oxervate (cenegermin-bkbj), which has a MW of 13,266, is a solution that contains 118 amino acids. It is a recombinant human nerve growth factor indicated for neurotrophic keratitis. In rats and rabbits given the drug during organogenesis, there was a slight increase in postimplantation loss at doses greater than or equal to 267 times the human dose.

Respiratory drugs

Symdeko (tezacaftor + ivacaftor), which have MWs of about 521 and 392, is indicated for the treatment of patients with cystic fibrosis who are homozygous for the F508del mutation or who have at least one mutation in the cystic fibrosis transmembrane conductance regulator gene. There were no adverse developmental effects in pregnant rats and rabbits when the drugs were used separately or combined.

Yupelri (revefenacin), which has a MW of about 598, is an anticholinergic drug. It is an inhaled solution for the maintenance treatment of chronic obstructive pulmonary disease. In rats and rabbits, doses that were about 209 times the RHD produced no evidence of fetal harm.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs reported no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2018, the Food and Drug Administration approved a record 58 new drugs for humans. One of these agents, Annovera (segesterone acetate and ethinyl estradiol), is a vaginal ring to prevent pregnancy and is not relevant in this article. A second drug, Asparlas (calaspargase pegol-mknl), indicated to treat acute lymphoblastic leukemia, has not yet been released by its manufacturer. The agents with molecular weights (MW) less than 1,000 probably cross the placenta, but nearly all, regardless of MW, will cross in the second half of pregnancy.

seb_ra/iStock/Getty Images

There is no human pregnancy data for these agents, but there are five drugs included in pregnancy registries. However, it will take some time before the outcomes of these drugs are published. The routine absence of pregnancy data for most drugs was pointed out in a reference that I coauthored (“Should pregnant women be included in phase 4 clinical drug trials?” Am J Obstet Gynecol. 2015 Dec;213[6]:810-5). The article makes a strong argument for including some drugs in these trials.

Amyloidosis

Onpattro (patisiran) is indicated for the treatment of the polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults. The drug caused embryo-fetal death and reduced fetal body weight in rabbits at doses also associated with maternal toxicity. No developmental toxicity was observed in rats.

Anti-infectives

Aemcolo (rifamycin), which has a MW of 720, is indicated for treatment of travelers’ diarrhea caused by noninvasive strains of Escherichia coli. No adverse fetal effects were observed in rats and rabbits that received close to human doses.

Krintafel (tafenoquine) is an antimalarial agent that is used to prevent relapse in patients who are receiving appropriate antimalarial therapy for Plasmodium vivax infection. The drug may cause hemolytic anemia in a fetus deficient in glucose-6-phosphate dehydrogenase. In rabbits, the drug caused dose-related abortions and maternal toxicity was observed in rabbits and rats. Treatment with this drug in pregnancy is not recommended, according to the manufacturer.

Tpoxx (tecovirimat monohydrate), which has a MW of about 394, is indicated for the treatment of smallpox disease. The drug did not cause embryo-fetal toxicity in pregnant mice and rabbits, but the maximum exposure in rabbits was only 0.4 times the human exposure.

Xofluza (baloxavir marboxil), which has a MW of about 572, is a prodrug that is converted by hydrolysis to baloxavir. It is indicated for the treatment of acute uncomplicated influenza. No adverse developmental effects were observed in rats and rabbits.

Zemdri (plazomicin), which has a MW of about 593, is an aminoglycoside indicated for the treatment of complicated urinary tract infections including pyelonephritis. The drug did not cause fetal harm in rats and rabbits at doses that did not cause maternal toxicity; however, prolonged use of an aminoglycoside (such as streptomycin) has caused irreversible, bilateral congenital deafness in children exposed in utero to prolonged use and is a potential complication.

Three new drugs in 2018 are indicated for treating HIV-1:

Biktarvy is a three-drug combination that includes bictegravir, emtricitabine, and tenofovir. The latter two drugs are included in the 11th edition of my book (“Drugs in Pregnancy and Lactation,” 11th ed. [Riverwoods, Ill.: Wolters Kluwer, 2017) and are not included here. Both are classified as compatible in pregnancy. Bictegravir has a MW of about 471. No adverse embryo-fetal effects in rats and rabbits were observed with this agent.

Trogarzo (ibalizumab-uiyk), which has a MW of about 150,000, is a monoclonal antibody antiretroviral agent used in combination with other antiretrovirals. There are no animal data. Although the MW is very high, monoclonal antibodies are transported across the placenta as pregnancy progresses.

Pifeltro (doravirine), which has a MW of about 426, is a nonnucleoside reverse transcriptase inhibitor used in combination with other antiretroviral agents for the treatment of HIV-1. The drug caused no significant toxicologic effects on embryo-fetal rats and rabbits.

If Biktarvy, Pifeltro, or Trogarzo are used in pregnancy, health care providers are encouraged to register the patient in the Antiretroviral Pregnancy Registry by calling 1-800-258-4263.

There are three new agents in the tetracycline class.

Nuzyra (omadacycline), which has a MW of about 729, is for community-acquired bacterial pneumonia and acute bacterial skin and skin structure infections.

Seysara (sarecycline), which has a MW of about 524, is for inflammatory lesions of nonnodular, moderate to severe acne vulgaris.

Xerava (eravacycline), which has a MW of about 632, is for complicated intra-abdominal infection.

The various dose-related toxicities observed with the three drugs in rats and rabbits included maternal deaths; increased postimplantation loss; reduced fetal body weights; delays in skeletal ossification; and fetal malformations of the skeleton, heart, and lung. Use of these drugs in the last half of pregnancy may cause permanent discoloration of the teeth and enamel hypoplasia, as well as inhibition of bone growth.

Antilipemic agents

Crysvita (burosumab-twza), which has a MW of about 147,000, is a fibroblast growth factor–blocking antibody indicated for the treatment of X-linked hypophosphatemia. In pregnant cynomolgus monkeys, doses slightly higher than the human dose were not teratogenic. The drug was detected in fetal serum indicating that it crossed the monkey placenta.

Tegsedi (inotersen), which has a MW of about 7,601, is an amyloidosis inhibitor used for polyneuropathy of hereditary transthyretin-mediated amyloidosis. It is available only through a restricted program. The drug was not teratogenic in mice and rabbits; however, it does decrease vitamin A levels, so supplementation with the vitamin is recommended.

Antineoplastics

The manufacturers recommend avoiding these drugs during pregnancy. Effective contraception should be used.

Daurismo (glasdegib), which has a MW of about 491, is a hedgehog pathway inhibitor indicated in combination with low-dose cytarabine for newly diagnosed acute myeloid leukemia (AML). The drug caused embryotoxicity, fetotoxicity, and teratogenicity in rats and rabbits at doses less than the human dose.

Erleada (apalutamide), which has a MW of about 477, is an androgen receptor inhibitor indicated for nonmetastatic, castration-resistant prostate cancer. Animal studies were not conducted because the drug should not be used in females.

Elzonris (tagraxofusp-erzs), which has a MW of 57,695, is a cytotoxin indicated for the treatment of blastic plasmacytoid dendritic cell neoplasm. Animal studies have not been conducted.

Lumoxiti (moxetumomab pasudotox–tdfk) which as a MW of about 63,000, is indicated for relapsed or refractory hairy cell leukemia. Studies have not been conducted in pregnant animals. Two life-threatening outcomes have occurred with the drug: capillary leak syndrome and hemolytic uremic syndrome. The drug should be discontinued if either occurs.

Lutathera (lutetium Lu 177 dotatate), which has a MW of about 1,610, is a radiolabeled somatostatin analogue given as a single intravenous dose every 8 weeks for four doses for the treatment of gastroenteropancreatic neuroendocrine tumors. Reproductive studies in animals have not been conducted. However, all radiopharmaceuticals have the potential to cause embryo-fetal harm. They also can cause infertility in males and females.

Talzenna (talazoparib), which has a MW of about 553, is a poly (ADP-ribose) polymerase inhibitor indicated for the treatment of certain types of breast cancer. At doses much less then the human dose, the drug caused fetal malformations and embryo-fetal death in rats.

Tibsovo (ivosidenib), which has a MW of 583, is an isocitrate dehydrogenase 1 inhibitor used for patients with relapsed or refractory AML. The drug caused embryo-fetal toxicity in rats and rabbits at doses slighter higher than the human dose.

There are seven new kinase inhibitors.

Braftovi (encorafenib), which has a MW of 540, is indicated in combination with Mektovi for patients with a specific type of metastatic melanoma. The drug caused embryo-fetal toxicity in rats and rabbits.

Copiktra (duvelisib), which has a MW of about 435, is indicated for treatment of chronic lymphocytic leukemia and follicular lymphoma. In rats and rabbits, the drug caused embryo-fetal death, lower fetal weights, and malformations.

Lorbrena (lorlatinib), which has a MW of about 406, is given for the treatment of metastatic non–small cell lung cancer. In rats and rabbits, the drug caused abortions, decreased fetal body weight, and major malformations.

Mektovi (binimetinib), which has a MW of about 441, is used in combination with Braftovi for patients with a specific type of melanoma. The drug was embryotoxic and abortifacient in rabbits.

Vitrakvi (larotrectinib), which has a MW of about 527, is used for patients with solid tumors. Studies in rats revealed fetal anasarca (extreme generalized edema) and omphalocele in rabbits.

Vizimpro (dacomitinib), which has a MW of about 488, is indicated for metastatic non–small cell lung cancer. The drug caused embryo-fetal toxicity in rats and mice.

Xospata (gilteritinib), which has a MW of about 1,222, is indicated for relapsed or refractory AML. In rats, the drug caused embryo-fetal death, suppressed fetal growth, and caused multiple malformations.

Three drugs are classified as monoclonal antibodies.

Gamifant (emapalumab), which has a MW of about 148,000, is indicated for primary hemophagocytic lymphohistiocytosis. A murine surrogate antimouse antibody was given to pregnant mice throughout gestation and no fetal harm was observed.

Libtayo (cemiplimab-rwlc), which has a MW of 146,000, is indicated for patients with metastatic or locally advanced cutaneous squamous cell carcinoma. Animal reproduction studies have not been conducted; however, based on its mechanism, increased rates of abortion or stillbirth may occur if the drug is used in human pregnancy.

Poteligeo (mogamulizumab-kpkc), which has a MW of about 149,000, is given for relapsed/refractory mycosis fungoides or Sézary syndrome. In pregnant monkeys, there was no embryo-fetal lethality, teratogenicity, fetal growth restriction, spontaneous abortion, or increased fetal death.

Central nervous system

There are three antimigraine agents that are monoclonal antibodies given as a subcutaneous injection.

Aimovig (erenumab-aooe), which has a MW of about 150,000, caused no adverse effects in monkey offspring.

Ajovy (fremanezumab-vfrm), which has a MW of about 148,000, had no adverse effect in rat and rabbit offspring.

Emgality (galcanezumab-gnlm), which has a MW of about 147,000, produced no adverse effects in rat and rabbit offspring.

Diacomit (stiripentol), which has a MW of about 234, is an anticonvulsant used to treat seizures associated with Dravet syndrome. The drug caused severe embryo-fetal toxicity in mice, rabbits, and rats. The drug is included in the North American Antiepileptic Drug (NAAED) Pregnancy Registry. Patients can enroll themselves by calling the toll-free number 1-888-233-2334 or visiting http://aedpregnancyregistry.org/.

Epidiolex (cannabidiol), which has a MW of about 314, is an anticonvulsant indicated for the treatment of seizures associated with Lennox-Gastaut syndrome or Dravet syndrome. In pregnant rats, doses up to about 16 times the recommended human dose (RHD) caused no embryo-fetal adverse effects. The drug caused decreased fetal body weights, increased fetal structural variations, and maternal toxicity when the drug was given to pregnant rabbits throughout organogenesis. The no-effect dose for embryo-fetal toxicity was less than the human dose. Patients can enroll themselves in the NAAED Pregnancy Registry by calling the toll-free number 1-888-233-2334 or visiting http://aedpregnancyregistry.org/.

Firdapse (amifampridine), a potassium channel blocker with a MW of about 201, is used for the treatment of Lambert-Eaton myasthenic syndrome. No adverse effects on embryo-fetal development were observed in rats and rabbits given the drug throughout organogenesis. However, in rats given the drug throughout pregnancy and lactation, there was an increase in stillbirths and pup deaths, reduced pup weight, and delayed sexual development in female pups.

Lucemyra (lofexidine), which has a MW of about 296, is used to mitigate opioid withdrawal symptoms to facilitate abrupt opioid discontinuation in adults. The drug caused severe toxicity in the fetuses of rats and rabbits.

Olumiant (baricitinib), which has a MW of about 371, is a Janus kinase inhibitor indicated for the treatment of rheumatoid arthritis. The drug was teratogenic in pregnant rats given doses about 20 times greater than the maximum RHD based on area under the curve. In rabbits, embryo death and rib anomalies were observed with doses 84 times greater than the maximum RHD, but no developmental toxicity was seen with doses 12 times greater than the maximum RHD.

Orilissa (elagolix), which has a MW of about 654, is a gonadotropin-releasing hormone receptor antagonist indicated for the management of pain associated with endometriosis. The drug caused abortions in rats and rabbits. Because the drug may increase the risk of early pregnancy loss, the manufacturer classifies it as contraindicated in pregnancy.

Dermatologic agents

Ilumya (tildrakizumab), which has a MW of about 147,000, is given by subcutaneous injection for the treatment of moderate to severe plaque psoriasis. When given during organogenesis in monkeys, no maternal or embryo-fetal toxicities were observed. However, when given throughout pregnancy a few neonatal deaths occurred, but the clinical significance of these nonclinical findings were unknown.

Fabry disease

Galafold (migalastat), which has a MW of about 200, is an alpha-galactosidase A pharmacologic chaperone indicated for the treatment of Fabry disease. Three pregnant women with Fabry disease were exposed to the drug in clinical studies but no information was provided on the pregnancy outcomes. No adverse developmental effects were observed in pregnant rats and rabbits.

Gastrointestinal agents

Akynzeo (netupitant or fosnetupitant palonosetron), which have MWs of about 579, 333, and 762, respectively, is available as an oral capsule (netupitant + palonosetron) and as an intravenous formulation (fosnetupitant + palonosetron). They are indicated, in combination with dexamethasone, for the prevention of nausea and vomiting related to cancer chemotherapy. Netupitant and fosnetupitant produced no embryo-fetal adverse effects in rats but were toxic to rabbit embryos. Palonosetron caused no embryo-fetal adverse effects in rats and rabbits.

Motegrity (prucalopride), which has a MW of about 486, is indicated for chronic idiopathic constipation. No adverse embryo-fetal developmental effects were observed in rats and rabbits.

Hematologic agents

Doptelet (avatrombopag), which has a MW of about 766, is indicated for the treatment of thrombocytopenia in adult patients with chronic liver disease who are scheduled to undergo a procedure. No embryo-fetal effects were observed in rats, but in rabbits the drug was associated with spontaneous abortions.

Lokelma (sodium zirconium cyclosilicate) is a nonabsorbed zirconium silicate that exchanges potassium for hydrogen and sodium. Animal studies have not been conducted. Because it is not absorbed, it is not expected to result in fetal exposure to the drug.

Mulpleta (lusutrombopag), which has a MW of about 592, a thrombopoietin receptor agonist, is indicated for the treatment of thrombocytopenia in patients with chronic liver disease. High levels of the drug in pregnant rats were associated with adverse developmental outcomes. No adverse embryo-fetal effects were seen in pregnant rabbits.

Palynziq (pegvaliase-pqpz), which has a MW of about 1,000,000, is a phenylalanine-metabolizing enzyme indicated to reduce blood phenylalanine concentrations in patients with phenylketonuria. In pregnant rats, the drug caused an increase in skeletal variations. In rabbits, the drug caused a high incidence of multiple malformations.

Takhzyro (lanadelumab-flyo), which has a MW of about 49,000, is a monoclonal antibody indicated for prophylaxis to prevent attacks of hereditary angioedema. The drug caused no fetal harm in monkeys.

Tavalisse (fostamatinib disodium hexahydrate), which has a MW of about 733, is a kinase inhibitor used for the treatment of thrombocytopenia. In pregnant rats and rabbits, the drug caused adverse developmental outcomes including embryo-fetal mortality, lower fetal weights, and structural anomalies.

Ultomiris (ravulizumab), which has a MW of about 148,000, is a humanized monoclonal antibody indicated for adult patients with paroxysmal nocturnal hemoglobinuria. In mice, the drug was associated with increased rates of developmental abnormalities and an increased rate of dead and moribund offspring.

Immunologic agent

Revcovi (elapegademase-lvlr), which has a MW of about 113,000, is a recombinant adenosine deaminase indicated for the treatment of adenosine deaminase severe combined immune deficiency. Animal studies in pregnancy have not been conducted.

Nutrient/Nutritional supplement

Fish oil is indicated as a source of calories and fatty acids in pediatric patients with parenteral nutrition-associated cholestasis. Animal reproduction studies have not been conducted. It is doubtful if this product will be used in pregnancy.

Ophthalmic – nerve growth factor

Oxervate (cenegermin-bkbj), which has a MW of 13,266, is a solution that contains 118 amino acids. It is a recombinant human nerve growth factor indicated for neurotrophic keratitis. In rats and rabbits given the drug during organogenesis, there was a slight increase in postimplantation loss at doses greater than or equal to 267 times the human dose.

Respiratory drugs

Symdeko (tezacaftor + ivacaftor), which have MWs of about 521 and 392, is indicated for the treatment of patients with cystic fibrosis who are homozygous for the F508del mutation or who have at least one mutation in the cystic fibrosis transmembrane conductance regulator gene. There were no adverse developmental effects in pregnant rats and rabbits when the drugs were used separately or combined.

Yupelri (revefenacin), which has a MW of about 598, is an anticholinergic drug. It is an inhaled solution for the maintenance treatment of chronic obstructive pulmonary disease. In rats and rabbits, doses that were about 209 times the RHD produced no evidence of fetal harm.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs reported no relevant financial disclosures. Email him at obnews@mdedge.com.

In 2018, the Food and Drug Administration approved a record 58 new drugs for humans. One of these agents, Annovera (segesterone acetate and ethinyl estradiol), is a vaginal ring to prevent pregnancy and is not relevant in this article. A second drug, Asparlas (calaspargase pegol-mknl), indicated to treat acute lymphoblastic leukemia, has not yet been released by its manufacturer. The agents with molecular weights (MW) less than 1,000 probably cross the placenta, but nearly all, regardless of MW, will cross in the second half of pregnancy.

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There is no human pregnancy data for these agents, but there are five drugs included in pregnancy registries. However, it will take some time before the outcomes of these drugs are published. The routine absence of pregnancy data for most drugs was pointed out in a reference that I coauthored (“Should pregnant women be included in phase 4 clinical drug trials?” Am J Obstet Gynecol. 2015 Dec;213[6]:810-5). The article makes a strong argument for including some drugs in these trials.

Amyloidosis

Onpattro (patisiran) is indicated for the treatment of the polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults. The drug caused embryo-fetal death and reduced fetal body weight in rabbits at doses also associated with maternal toxicity. No developmental toxicity was observed in rats.

Anti-infectives

Aemcolo (rifamycin), which has a MW of 720, is indicated for treatment of travelers’ diarrhea caused by noninvasive strains of Escherichia coli. No adverse fetal effects were observed in rats and rabbits that received close to human doses.

Krintafel (tafenoquine) is an antimalarial agent that is used to prevent relapse in patients who are receiving appropriate antimalarial therapy for Plasmodium vivax infection. The drug may cause hemolytic anemia in a fetus deficient in glucose-6-phosphate dehydrogenase. In rabbits, the drug caused dose-related abortions and maternal toxicity was observed in rabbits and rats. Treatment with this drug in pregnancy is not recommended, according to the manufacturer.

Tpoxx (tecovirimat monohydrate), which has a MW of about 394, is indicated for the treatment of smallpox disease. The drug did not cause embryo-fetal toxicity in pregnant mice and rabbits, but the maximum exposure in rabbits was only 0.4 times the human exposure.

Xofluza (baloxavir marboxil), which has a MW of about 572, is a prodrug that is converted by hydrolysis to baloxavir. It is indicated for the treatment of acute uncomplicated influenza. No adverse developmental effects were observed in rats and rabbits.

Zemdri (plazomicin), which has a MW of about 593, is an aminoglycoside indicated for the treatment of complicated urinary tract infections including pyelonephritis. The drug did not cause fetal harm in rats and rabbits at doses that did not cause maternal toxicity; however, prolonged use of an aminoglycoside (such as streptomycin) has caused irreversible, bilateral congenital deafness in children exposed in utero to prolonged use and is a potential complication.

Three new drugs in 2018 are indicated for treating HIV-1:

Biktarvy is a three-drug combination that includes bictegravir, emtricitabine, and tenofovir. The latter two drugs are included in the 11th edition of my book (“Drugs in Pregnancy and Lactation,” 11th ed. [Riverwoods, Ill.: Wolters Kluwer, 2017) and are not included here. Both are classified as compatible in pregnancy. Bictegravir has a MW of about 471. No adverse embryo-fetal effects in rats and rabbits were observed with this agent.

Trogarzo (ibalizumab-uiyk), which has a MW of about 150,000, is a monoclonal antibody antiretroviral agent used in combination with other antiretrovirals. There are no animal data. Although the MW is very high, monoclonal antibodies are transported across the placenta as pregnancy progresses.

Pifeltro (doravirine), which has a MW of about 426, is a nonnucleoside reverse transcriptase inhibitor used in combination with other antiretroviral agents for the treatment of HIV-1. The drug caused no significant toxicologic effects on embryo-fetal rats and rabbits.

If Biktarvy, Pifeltro, or Trogarzo are used in pregnancy, health care providers are encouraged to register the patient in the Antiretroviral Pregnancy Registry by calling 1-800-258-4263.

There are three new agents in the tetracycline class.

Nuzyra (omadacycline), which has a MW of about 729, is for community-acquired bacterial pneumonia and acute bacterial skin and skin structure infections.

Seysara (sarecycline), which has a MW of about 524, is for inflammatory lesions of nonnodular, moderate to severe acne vulgaris.

Xerava (eravacycline), which has a MW of about 632, is for complicated intra-abdominal infection.

The various dose-related toxicities observed with the three drugs in rats and rabbits included maternal deaths; increased postimplantation loss; reduced fetal body weights; delays in skeletal ossification; and fetal malformations of the skeleton, heart, and lung. Use of these drugs in the last half of pregnancy may cause permanent discoloration of the teeth and enamel hypoplasia, as well as inhibition of bone growth.

Antilipemic agents

Crysvita (burosumab-twza), which has a MW of about 147,000, is a fibroblast growth factor–blocking antibody indicated for the treatment of X-linked hypophosphatemia. In pregnant cynomolgus monkeys, doses slightly higher than the human dose were not teratogenic. The drug was detected in fetal serum indicating that it crossed the monkey placenta.

Tegsedi (inotersen), which has a MW of about 7,601, is an amyloidosis inhibitor used for polyneuropathy of hereditary transthyretin-mediated amyloidosis. It is available only through a restricted program. The drug was not teratogenic in mice and rabbits; however, it does decrease vitamin A levels, so supplementation with the vitamin is recommended.

Antineoplastics

The manufacturers recommend avoiding these drugs during pregnancy. Effective contraception should be used.

Daurismo (glasdegib), which has a MW of about 491, is a hedgehog pathway inhibitor indicated in combination with low-dose cytarabine for newly diagnosed acute myeloid leukemia (AML). The drug caused embryotoxicity, fetotoxicity, and teratogenicity in rats and rabbits at doses less than the human dose.

Erleada (apalutamide), which has a MW of about 477, is an androgen receptor inhibitor indicated for nonmetastatic, castration-resistant prostate cancer. Animal studies were not conducted because the drug should not be used in females.

Elzonris (tagraxofusp-erzs), which has a MW of 57,695, is a cytotoxin indicated for the treatment of blastic plasmacytoid dendritic cell neoplasm. Animal studies have not been conducted.

Lumoxiti (moxetumomab pasudotox–tdfk) which as a MW of about 63,000, is indicated for relapsed or refractory hairy cell leukemia. Studies have not been conducted in pregnant animals. Two life-threatening outcomes have occurred with the drug: capillary leak syndrome and hemolytic uremic syndrome. The drug should be discontinued if either occurs.

Lutathera (lutetium Lu 177 dotatate), which has a MW of about 1,610, is a radiolabeled somatostatin analogue given as a single intravenous dose every 8 weeks for four doses for the treatment of gastroenteropancreatic neuroendocrine tumors. Reproductive studies in animals have not been conducted. However, all radiopharmaceuticals have the potential to cause embryo-fetal harm. They also can cause infertility in males and females.

Talzenna (talazoparib), which has a MW of about 553, is a poly (ADP-ribose) polymerase inhibitor indicated for the treatment of certain types of breast cancer. At doses much less then the human dose, the drug caused fetal malformations and embryo-fetal death in rats.

Tibsovo (ivosidenib), which has a MW of 583, is an isocitrate dehydrogenase 1 inhibitor used for patients with relapsed or refractory AML. The drug caused embryo-fetal toxicity in rats and rabbits at doses slighter higher than the human dose.

There are seven new kinase inhibitors.

Braftovi (encorafenib), which has a MW of 540, is indicated in combination with Mektovi for patients with a specific type of metastatic melanoma. The drug caused embryo-fetal toxicity in rats and rabbits.

Copiktra (duvelisib), which has a MW of about 435, is indicated for treatment of chronic lymphocytic leukemia and follicular lymphoma. In rats and rabbits, the drug caused embryo-fetal death, lower fetal weights, and malformations.

Lorbrena (lorlatinib), which has a MW of about 406, is given for the treatment of metastatic non–small cell lung cancer. In rats and rabbits, the drug caused abortions, decreased fetal body weight, and major malformations.

Mektovi (binimetinib), which has a MW of about 441, is used in combination with Braftovi for patients with a specific type of melanoma. The drug was embryotoxic and abortifacient in rabbits.

Vitrakvi (larotrectinib), which has a MW of about 527, is used for patients with solid tumors. Studies in rats revealed fetal anasarca (extreme generalized edema) and omphalocele in rabbits.

Vizimpro (dacomitinib), which has a MW of about 488, is indicated for metastatic non–small cell lung cancer. The drug caused embryo-fetal toxicity in rats and mice.

Xospata (gilteritinib), which has a MW of about 1,222, is indicated for relapsed or refractory AML. In rats, the drug caused embryo-fetal death, suppressed fetal growth, and caused multiple malformations.

Three drugs are classified as monoclonal antibodies.

Gamifant (emapalumab), which has a MW of about 148,000, is indicated for primary hemophagocytic lymphohistiocytosis. A murine surrogate antimouse antibody was given to pregnant mice throughout gestation and no fetal harm was observed.

Libtayo (cemiplimab-rwlc), which has a MW of 146,000, is indicated for patients with metastatic or locally advanced cutaneous squamous cell carcinoma. Animal reproduction studies have not been conducted; however, based on its mechanism, increased rates of abortion or stillbirth may occur if the drug is used in human pregnancy.

Poteligeo (mogamulizumab-kpkc), which has a MW of about 149,000, is given for relapsed/refractory mycosis fungoides or Sézary syndrome. In pregnant monkeys, there was no embryo-fetal lethality, teratogenicity, fetal growth restriction, spontaneous abortion, or increased fetal death.

Central nervous system

There are three antimigraine agents that are monoclonal antibodies given as a subcutaneous injection.

Aimovig (erenumab-aooe), which has a MW of about 150,000, caused no adverse effects in monkey offspring.

Ajovy (fremanezumab-vfrm), which has a MW of about 148,000, had no adverse effect in rat and rabbit offspring.

Emgality (galcanezumab-gnlm), which has a MW of about 147,000, produced no adverse effects in rat and rabbit offspring.

Diacomit (stiripentol), which has a MW of about 234, is an anticonvulsant used to treat seizures associated with Dravet syndrome. The drug caused severe embryo-fetal toxicity in mice, rabbits, and rats. The drug is included in the North American Antiepileptic Drug (NAAED) Pregnancy Registry. Patients can enroll themselves by calling the toll-free number 1-888-233-2334 or visiting http://aedpregnancyregistry.org/.

Epidiolex (cannabidiol), which has a MW of about 314, is an anticonvulsant indicated for the treatment of seizures associated with Lennox-Gastaut syndrome or Dravet syndrome. In pregnant rats, doses up to about 16 times the recommended human dose (RHD) caused no embryo-fetal adverse effects. The drug caused decreased fetal body weights, increased fetal structural variations, and maternal toxicity when the drug was given to pregnant rabbits throughout organogenesis. The no-effect dose for embryo-fetal toxicity was less than the human dose. Patients can enroll themselves in the NAAED Pregnancy Registry by calling the toll-free number 1-888-233-2334 or visiting http://aedpregnancyregistry.org/.

Firdapse (amifampridine), a potassium channel blocker with a MW of about 201, is used for the treatment of Lambert-Eaton myasthenic syndrome. No adverse effects on embryo-fetal development were observed in rats and rabbits given the drug throughout organogenesis. However, in rats given the drug throughout pregnancy and lactation, there was an increase in stillbirths and pup deaths, reduced pup weight, and delayed sexual development in female pups.

Lucemyra (lofexidine), which has a MW of about 296, is used to mitigate opioid withdrawal symptoms to facilitate abrupt opioid discontinuation in adults. The drug caused severe toxicity in the fetuses of rats and rabbits.

Olumiant (baricitinib), which has a MW of about 371, is a Janus kinase inhibitor indicated for the treatment of rheumatoid arthritis. The drug was teratogenic in pregnant rats given doses about 20 times greater than the maximum RHD based on area under the curve. In rabbits, embryo death and rib anomalies were observed with doses 84 times greater than the maximum RHD, but no developmental toxicity was seen with doses 12 times greater than the maximum RHD.

Orilissa (elagolix), which has a MW of about 654, is a gonadotropin-releasing hormone receptor antagonist indicated for the management of pain associated with endometriosis. The drug caused abortions in rats and rabbits. Because the drug may increase the risk of early pregnancy loss, the manufacturer classifies it as contraindicated in pregnancy.

Dermatologic agents

Ilumya (tildrakizumab), which has a MW of about 147,000, is given by subcutaneous injection for the treatment of moderate to severe plaque psoriasis. When given during organogenesis in monkeys, no maternal or embryo-fetal toxicities were observed. However, when given throughout pregnancy a few neonatal deaths occurred, but the clinical significance of these nonclinical findings were unknown.

Fabry disease

Galafold (migalastat), which has a MW of about 200, is an alpha-galactosidase A pharmacologic chaperone indicated for the treatment of Fabry disease. Three pregnant women with Fabry disease were exposed to the drug in clinical studies but no information was provided on the pregnancy outcomes. No adverse developmental effects were observed in pregnant rats and rabbits.

Gastrointestinal agents

Akynzeo (netupitant or fosnetupitant palonosetron), which have MWs of about 579, 333, and 762, respectively, is available as an oral capsule (netupitant + palonosetron) and as an intravenous formulation (fosnetupitant + palonosetron). They are indicated, in combination with dexamethasone, for the prevention of nausea and vomiting related to cancer chemotherapy. Netupitant and fosnetupitant produced no embryo-fetal adverse effects in rats but were toxic to rabbit embryos. Palonosetron caused no embryo-fetal adverse effects in rats and rabbits.

Motegrity (prucalopride), which has a MW of about 486, is indicated for chronic idiopathic constipation. No adverse embryo-fetal developmental effects were observed in rats and rabbits.

Hematologic agents

Doptelet (avatrombopag), which has a MW of about 766, is indicated for the treatment of thrombocytopenia in adult patients with chronic liver disease who are scheduled to undergo a procedure. No embryo-fetal effects were observed in rats, but in rabbits the drug was associated with spontaneous abortions.

Lokelma (sodium zirconium cyclosilicate) is a nonabsorbed zirconium silicate that exchanges potassium for hydrogen and sodium. Animal studies have not been conducted. Because it is not absorbed, it is not expected to result in fetal exposure to the drug.

Mulpleta (lusutrombopag), which has a MW of about 592, a thrombopoietin receptor agonist, is indicated for the treatment of thrombocytopenia in patients with chronic liver disease. High levels of the drug in pregnant rats were associated with adverse developmental outcomes. No adverse embryo-fetal effects were seen in pregnant rabbits.

Palynziq (pegvaliase-pqpz), which has a MW of about 1,000,000, is a phenylalanine-metabolizing enzyme indicated to reduce blood phenylalanine concentrations in patients with phenylketonuria. In pregnant rats, the drug caused an increase in skeletal variations. In rabbits, the drug caused a high incidence of multiple malformations.

Takhzyro (lanadelumab-flyo), which has a MW of about 49,000, is a monoclonal antibody indicated for prophylaxis to prevent attacks of hereditary angioedema. The drug caused no fetal harm in monkeys.

Tavalisse (fostamatinib disodium hexahydrate), which has a MW of about 733, is a kinase inhibitor used for the treatment of thrombocytopenia. In pregnant rats and rabbits, the drug caused adverse developmental outcomes including embryo-fetal mortality, lower fetal weights, and structural anomalies.

Ultomiris (ravulizumab), which has a MW of about 148,000, is a humanized monoclonal antibody indicated for adult patients with paroxysmal nocturnal hemoglobinuria. In mice, the drug was associated with increased rates of developmental abnormalities and an increased rate of dead and moribund offspring.

Immunologic agent

Revcovi (elapegademase-lvlr), which has a MW of about 113,000, is a recombinant adenosine deaminase indicated for the treatment of adenosine deaminase severe combined immune deficiency. Animal studies in pregnancy have not been conducted.

Nutrient/Nutritional supplement

Fish oil is indicated as a source of calories and fatty acids in pediatric patients with parenteral nutrition-associated cholestasis. Animal reproduction studies have not been conducted. It is doubtful if this product will be used in pregnancy.

Ophthalmic – nerve growth factor

Oxervate (cenegermin-bkbj), which has a MW of 13,266, is a solution that contains 118 amino acids. It is a recombinant human nerve growth factor indicated for neurotrophic keratitis. In rats and rabbits given the drug during organogenesis, there was a slight increase in postimplantation loss at doses greater than or equal to 267 times the human dose.

Respiratory drugs

Symdeko (tezacaftor + ivacaftor), which have MWs of about 521 and 392, is indicated for the treatment of patients with cystic fibrosis who are homozygous for the F508del mutation or who have at least one mutation in the cystic fibrosis transmembrane conductance regulator gene. There were no adverse developmental effects in pregnant rats and rabbits when the drugs were used separately or combined.

Yupelri (revefenacin), which has a MW of about 598, is an anticholinergic drug. It is an inhaled solution for the maintenance treatment of chronic obstructive pulmonary disease. In rats and rabbits, doses that were about 209 times the RHD produced no evidence of fetal harm.

Mr. Briggs is clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs reported no relevant financial disclosures. Email him at obnews@mdedge.com.

Migraine is a common neurovascular disorder with episodic attacks of throbbing headache, nausea/vomiting, photophobia, and phonophobia. Migraine symptoms will lessen in up to 70% of pregnant women, usually during the second and third trimesters, but will worsen in 4%-8%, and new-onset migraine may account for as many as 16% of all cases of the disorder in pregnancy.

Prevention of migraines

baona/E+/Getty Images

A 2002 review by Goadsby PJ et al. (N Engl J Med. 2002 Jan 24;346[4]:257-70) identified 11 drugs or drug classes for the prevention of migraine attacks. Four agents that are available in the United States were thought to have proven efficacy or were well accepted: metoprolol, propranolol, amitriptyline, and valproate. Valproate should not be used during pregnancy because it is a known teratogen and can cause other fetal problems throughout gestation. Metoprolol, a cardioselective beta-blocker, is a risk for intrauterine growth restriction (IUGR) in the second/third trimesters.

Three other agents are not available in the United States: flunarizine (an agent with calcium channel blocking activity) and two serotonin antagonists, pizotifen and methysergide (a semisynthetic ergot alkaloid). Based on the drug class, flunarizine probably is compatible with pregnancy. Ergot alkaloids, including methysergide, are contraindicated in pregnancy.

Verapamil (Calan, Isoptin) and the selective serotonin reuptake inhibitors (SSRIs) were widely used, but the reviewers concluded that there was poor evidence of benefit.

Use of the SSRI antidepressants in the third trimester may cause newborn toxicity.

Only amitriptyline, verapamil, and low-dose propranolol (30-40 mg/day) have sufficient data to classify as compatible throughout pregnancy, but higher doses of propranolol may cause IUGR and other fetal/neonatal toxicity.

Two agents, gabapentin (Neurontin) and topiramate (Topamax), were considered promising agents for migraine prophylaxis. However, topiramate is best avoided in pregnancy. There are inadequate human data to assess the risk of gabapentin and topiramate, therefore both agents should be avoided in the first trimester.

Breastfeeding: Prevention therapy

Based on their potential for harm, topiramate and valproate should not be used during breastfeeding. All of the other drugs probably are compatible with breastfeeding, but the nursing infant should be monitored for adverse effects common in nonpregnant adults.

Acute treatment of migraines

There are 11 single-agent drugs that are indicated for the acute treatment of migraine.

Almotriptan (Axert) is available as an oral tablet. There are no human pregnancy data and the animal data suggest low risk. However, there is a possible risk of preterm birth.

Dihydroergotamine (Migranal, D.H.E. 45) is available for injection and nasal spray. It is contraindicated, especially near term (it has oxytocic properties), and the animal data suggest risk of IUGR.

Eletriptan (Relpax) is an oral tablet. There are no human data and the animal data suggest low risk. There is a possible risk of preterm birth.

Ergotamine (Ergomar), an oral tablet, is contraindicated in pregnancy and breastfeeding (see above and below).

Methysergide (Sansert) is contraindicated but is not available in United States.

Frovatriptan (Frova) has no human pregnancy data. The animal data suggests low risk but there is the possibility of preterm birth.

There are 93 cases in pregnancy for naratriptan (Amerge) but none during breastfeeding. The drug did not cause major defects in animals but did produce dose-related embryo and fetal development toxicity. In addition, the data did suggest a possible increase in preterm births.

For the rizatriptan (Maxalt, Maxalt-MLT) tablet, animal data suggest low risk. There was exposure to the drug in more than 81 human pregnancy cases. Although there was no evidence of birth defects, the data raised the concern of preterm birth.

There is no evidence that sumatriptan (Alsuma, Imitrex, Imitrex Statdose, Sumavel DosePro, Zecuity) is a human teratogen but there is a possible increase in preterm birth. The drug was teratogenic in one animal species. This agent is available as a tablet and for injection.

There is no human pregnancy data for zolmitriptan (Zomig; Zomig-ZMT) but, as with all triptans, there is a possible risk of preterm birth. The animal data suggest low risk. It is available as an oral tablet.

There are three multiagent products that can be used to treat migraines. There are no published human pregnancy data for these combination products. The combination oral drug sumatriptan and naproxen (Treximet) is best avoided in pregnancy because first trimester exposure to the NSAID naproxen may cause embryo-fetal harm (structural anomalies and abortion) or close to term (premature closure of the ductus arteriosus) and other newborn toxicities.

Caffeine and ergotamine (Cafergot, Migergot) tablets should be considered contraindicated in pregnancy and breastfeeding. Although small, infrequent doses of this product do not appear to be fetotoxic or teratogenic, idiosyncratic responses may occur with ergotamine that endanger the fetus.

The third product, acetaminophen, dichloralphenazone, and isometheptene (Epidrin, LarkaDrin, Migragesic IDA) is an over-the-counter tablet. It does not appear to be related to embryo-fetal harm, but its effectiveness is unknown.

Breastfeeding: Acute treatment

Consistent with their relatively low molecular weights, all of the acute treatment agents most likely are excreted into breast milk. With the exception of the two ergotamine products, both of which should be considered contraindicated, all of the other agents probably are compatible during breastfeeding.

Summary

Migraine headaches are common but can be prevented and/or treated safely in pregnancy and when nursing. In addition to the review mentioned above, three other reviews are well worth reading: Becker WJ. Continuum (Minneap Minn). 2015 Aug;21(4 Headache):953-72; Becker WJ. Headache. 2015 Jun;55(6):778-93; Hutchinson S et al. Headache. 2013 Apr;53(4):614-27.

Mr. Briggs is a clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

Migraine is a common neurovascular disorder with episodic attacks of throbbing headache, nausea/vomiting, photophobia, and phonophobia. Migraine symptoms will lessen in up to 70% of pregnant women, usually during the second and third trimesters, but will worsen in 4%-8%, and new-onset migraine may account for as many as 16% of all cases of the disorder in pregnancy.

Prevention of migraines

baona/E+/Getty Images

A 2002 review by Goadsby PJ et al. (N Engl J Med. 2002 Jan 24;346[4]:257-70) identified 11 drugs or drug classes for the prevention of migraine attacks. Four agents that are available in the United States were thought to have proven efficacy or were well accepted: metoprolol, propranolol, amitriptyline, and valproate. Valproate should not be used during pregnancy because it is a known teratogen and can cause other fetal problems throughout gestation. Metoprolol, a cardioselective beta-blocker, is a risk for intrauterine growth restriction (IUGR) in the second/third trimesters.

Three other agents are not available in the United States: flunarizine (an agent with calcium channel blocking activity) and two serotonin antagonists, pizotifen and methysergide (a semisynthetic ergot alkaloid). Based on the drug class, flunarizine probably is compatible with pregnancy. Ergot alkaloids, including methysergide, are contraindicated in pregnancy.

Verapamil (Calan, Isoptin) and the selective serotonin reuptake inhibitors (SSRIs) were widely used, but the reviewers concluded that there was poor evidence of benefit.

Use of the SSRI antidepressants in the third trimester may cause newborn toxicity.

Only amitriptyline, verapamil, and low-dose propranolol (30-40 mg/day) have sufficient data to classify as compatible throughout pregnancy, but higher doses of propranolol may cause IUGR and other fetal/neonatal toxicity.

Two agents, gabapentin (Neurontin) and topiramate (Topamax), were considered promising agents for migraine prophylaxis. However, topiramate is best avoided in pregnancy. There are inadequate human data to assess the risk of gabapentin and topiramate, therefore both agents should be avoided in the first trimester.

Breastfeeding: Prevention therapy

Based on their potential for harm, topiramate and valproate should not be used during breastfeeding. All of the other drugs probably are compatible with breastfeeding, but the nursing infant should be monitored for adverse effects common in nonpregnant adults.

Acute treatment of migraines

There are 11 single-agent drugs that are indicated for the acute treatment of migraine.

Almotriptan (Axert) is available as an oral tablet. There are no human pregnancy data and the animal data suggest low risk. However, there is a possible risk of preterm birth.

Dihydroergotamine (Migranal, D.H.E. 45) is available for injection and nasal spray. It is contraindicated, especially near term (it has oxytocic properties), and the animal data suggest risk of IUGR.

Eletriptan (Relpax) is an oral tablet. There are no human data and the animal data suggest low risk. There is a possible risk of preterm birth.

Ergotamine (Ergomar), an oral tablet, is contraindicated in pregnancy and breastfeeding (see above and below).

Methysergide (Sansert) is contraindicated but is not available in United States.

Frovatriptan (Frova) has no human pregnancy data. The animal data suggests low risk but there is the possibility of preterm birth.

There are 93 cases in pregnancy for naratriptan (Amerge) but none during breastfeeding. The drug did not cause major defects in animals but did produce dose-related embryo and fetal development toxicity. In addition, the data did suggest a possible increase in preterm births.

For the rizatriptan (Maxalt, Maxalt-MLT) tablet, animal data suggest low risk. There was exposure to the drug in more than 81 human pregnancy cases. Although there was no evidence of birth defects, the data raised the concern of preterm birth.

There is no evidence that sumatriptan (Alsuma, Imitrex, Imitrex Statdose, Sumavel DosePro, Zecuity) is a human teratogen but there is a possible increase in preterm birth. The drug was teratogenic in one animal species. This agent is available as a tablet and for injection.

There is no human pregnancy data for zolmitriptan (Zomig; Zomig-ZMT) but, as with all triptans, there is a possible risk of preterm birth. The animal data suggest low risk. It is available as an oral tablet.

There are three multiagent products that can be used to treat migraines. There are no published human pregnancy data for these combination products. The combination oral drug sumatriptan and naproxen (Treximet) is best avoided in pregnancy because first trimester exposure to the NSAID naproxen may cause embryo-fetal harm (structural anomalies and abortion) or close to term (premature closure of the ductus arteriosus) and other newborn toxicities.

Caffeine and ergotamine (Cafergot, Migergot) tablets should be considered contraindicated in pregnancy and breastfeeding. Although small, infrequent doses of this product do not appear to be fetotoxic or teratogenic, idiosyncratic responses may occur with ergotamine that endanger the fetus.

The third product, acetaminophen, dichloralphenazone, and isometheptene (Epidrin, LarkaDrin, Migragesic IDA) is an over-the-counter tablet. It does not appear to be related to embryo-fetal harm, but its effectiveness is unknown.

Breastfeeding: Acute treatment

Consistent with their relatively low molecular weights, all of the acute treatment agents most likely are excreted into breast milk. With the exception of the two ergotamine products, both of which should be considered contraindicated, all of the other agents probably are compatible during breastfeeding.

Summary

Migraine headaches are common but can be prevented and/or treated safely in pregnancy and when nursing. In addition to the review mentioned above, three other reviews are well worth reading: Becker WJ. Continuum (Minneap Minn). 2015 Aug;21(4 Headache):953-72; Becker WJ. Headache. 2015 Jun;55(6):778-93; Hutchinson S et al. Headache. 2013 Apr;53(4):614-27.

Mr. Briggs is a clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.

Migraine is a common neurovascular disorder with episodic attacks of throbbing headache, nausea/vomiting, photophobia, and phonophobia. Migraine symptoms will lessen in up to 70% of pregnant women, usually during the second and third trimesters, but will worsen in 4%-8%, and new-onset migraine may account for as many as 16% of all cases of the disorder in pregnancy.

Prevention of migraines

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A 2002 review by Goadsby PJ et al. (N Engl J Med. 2002 Jan 24;346[4]:257-70) identified 11 drugs or drug classes for the prevention of migraine attacks. Four agents that are available in the United States were thought to have proven efficacy or were well accepted: metoprolol, propranolol, amitriptyline, and valproate. Valproate should not be used during pregnancy because it is a known teratogen and can cause other fetal problems throughout gestation. Metoprolol, a cardioselective beta-blocker, is a risk for intrauterine growth restriction (IUGR) in the second/third trimesters.

Three other agents are not available in the United States: flunarizine (an agent with calcium channel blocking activity) and two serotonin antagonists, pizotifen and methysergide (a semisynthetic ergot alkaloid). Based on the drug class, flunarizine probably is compatible with pregnancy. Ergot alkaloids, including methysergide, are contraindicated in pregnancy.

Verapamil (Calan, Isoptin) and the selective serotonin reuptake inhibitors (SSRIs) were widely used, but the reviewers concluded that there was poor evidence of benefit.

Use of the SSRI antidepressants in the third trimester may cause newborn toxicity.

Only amitriptyline, verapamil, and low-dose propranolol (30-40 mg/day) have sufficient data to classify as compatible throughout pregnancy, but higher doses of propranolol may cause IUGR and other fetal/neonatal toxicity.

Two agents, gabapentin (Neurontin) and topiramate (Topamax), were considered promising agents for migraine prophylaxis. However, topiramate is best avoided in pregnancy. There are inadequate human data to assess the risk of gabapentin and topiramate, therefore both agents should be avoided in the first trimester.

Breastfeeding: Prevention therapy

Based on their potential for harm, topiramate and valproate should not be used during breastfeeding. All of the other drugs probably are compatible with breastfeeding, but the nursing infant should be monitored for adverse effects common in nonpregnant adults.

Acute treatment of migraines

There are 11 single-agent drugs that are indicated for the acute treatment of migraine.

Almotriptan (Axert) is available as an oral tablet. There are no human pregnancy data and the animal data suggest low risk. However, there is a possible risk of preterm birth.

Dihydroergotamine (Migranal, D.H.E. 45) is available for injection and nasal spray. It is contraindicated, especially near term (it has oxytocic properties), and the animal data suggest risk of IUGR.

Eletriptan (Relpax) is an oral tablet. There are no human data and the animal data suggest low risk. There is a possible risk of preterm birth.

Ergotamine (Ergomar), an oral tablet, is contraindicated in pregnancy and breastfeeding (see above and below).

Methysergide (Sansert) is contraindicated but is not available in United States.

Frovatriptan (Frova) has no human pregnancy data. The animal data suggests low risk but there is the possibility of preterm birth.

There are 93 cases in pregnancy for naratriptan (Amerge) but none during breastfeeding. The drug did not cause major defects in animals but did produce dose-related embryo and fetal development toxicity. In addition, the data did suggest a possible increase in preterm births.

For the rizatriptan (Maxalt, Maxalt-MLT) tablet, animal data suggest low risk. There was exposure to the drug in more than 81 human pregnancy cases. Although there was no evidence of birth defects, the data raised the concern of preterm birth.

There is no evidence that sumatriptan (Alsuma, Imitrex, Imitrex Statdose, Sumavel DosePro, Zecuity) is a human teratogen but there is a possible increase in preterm birth. The drug was teratogenic in one animal species. This agent is available as a tablet and for injection.

There is no human pregnancy data for zolmitriptan (Zomig; Zomig-ZMT) but, as with all triptans, there is a possible risk of preterm birth. The animal data suggest low risk. It is available as an oral tablet.

There are three multiagent products that can be used to treat migraines. There are no published human pregnancy data for these combination products. The combination oral drug sumatriptan and naproxen (Treximet) is best avoided in pregnancy because first trimester exposure to the NSAID naproxen may cause embryo-fetal harm (structural anomalies and abortion) or close to term (premature closure of the ductus arteriosus) and other newborn toxicities.

Caffeine and ergotamine (Cafergot, Migergot) tablets should be considered contraindicated in pregnancy and breastfeeding. Although small, infrequent doses of this product do not appear to be fetotoxic or teratogenic, idiosyncratic responses may occur with ergotamine that endanger the fetus.

The third product, acetaminophen, dichloralphenazone, and isometheptene (Epidrin, LarkaDrin, Migragesic IDA) is an over-the-counter tablet. It does not appear to be related to embryo-fetal harm, but its effectiveness is unknown.

Breastfeeding: Acute treatment

Consistent with their relatively low molecular weights, all of the acute treatment agents most likely are excreted into breast milk. With the exception of the two ergotamine products, both of which should be considered contraindicated, all of the other agents probably are compatible during breastfeeding.

Summary

Migraine headaches are common but can be prevented and/or treated safely in pregnancy and when nursing. In addition to the review mentioned above, three other reviews are well worth reading: Becker WJ. Continuum (Minneap Minn). 2015 Aug;21(4 Headache):953-72; Becker WJ. Headache. 2015 Jun;55(6):778-93; Hutchinson S et al. Headache. 2013 Apr;53(4):614-27.

Mr. Briggs is a clinical professor of pharmacy at the University of California, San Francisco, and adjunct professor of pharmacy at the University of Southern California, Los Angeles, as well as at Washington State University, Spokane. Mr. Briggs said he had no relevant financial disclosures. Email him at obnews@mdedge.com.