Damian McNamara, MA

For the first time, the Food and Drug Administration approved a pill taken once daily for 14 days to help women manage the often strong, sometimes overpowering symptoms of postpartum depression.

Several experts in mental health and women’s health offered their views of this new treatment option for a condition that affects an estimated 1 in 8 women in the United States. What will it mean for easing symptoms such as hopelessness, crankiness, and lack of interest in bonding with the baby or, in the case of multiples, babies – and in some cases, thoughts of death or suicide?
 

A fast-acting option

“We don’t have many oral medications that are fast-acting antidepressants, so this is incredibly exciting,” said Sarah Oreck, MD, a psychiatrist in private practice in Los Angeles who specializes in reproductive psychiatry. The rapid response is likely because the medication targets the hormonal mechanism underlying postpartum depression, she added.

Zuranolone (Zurzuvae, Biogen/Sage) is different from most other antidepressants – it is designed to be taken for a shorter period. Also, Because zuranolone is a pill, it is more convenient to take than the other FDA-approved treatment, the IV infusion brexanolone (Zulresso, Sage).

“It’s obviously game changing to have something in pill form. The infusion has to be done at an infusion center to monitor people for any complications,” said Kimberly Yonkers, MD, a psychiatrist specializing in women’s health, a Distinguished Life Fellow of the American Psychiatric Association (APA), and the Katz Family Chair of Psychiatry at the University of Massachusetts Chan Medical School/UMass Memorial Medical Center in Worcester.

Women may experience improvement in postpartum depression in as soon as 3 days after starting the medication. In contrast, “typical antidepressants can take up to 2 weeks before patients notice a difference and 4 to 8 weeks to see a full response. A fast-acting pill that can be taken orally could be an ideal option for the 15% to 20% of women who experience postpartum depression,” said Priya Gopalan, MD, a psychiatrist with UPMC Western Psychiatric Hospital and Magee-Womens Hospital in Pittsburgh.

The medical community, and reproductive psychiatrists in particular, has always suspected differences in the biological underpinnings of postpartum depression and major depressive disorder, Dr. Oreck said. “We know that postpartum depression looks different from major depressive disorder and that hormonal shifts during pregnancy and postpartum are a huge risk factor for postpartum depression,” she said.

Although selective serotonin reuptake inhibitors (SSRIs) are helpful and currently the standard of care for treating moderate to severe postpartum depression in combination with therapy, Dr. Oreck added, early studies suggest that zuranolone may work faster and potentially be more effective than SSRIs in treating the condition.

Zuranolone is a version of a naturally occurring hormone called allopregnanolone, a metabolite of progesterone. Concentrations of allopregnanolone rise dramatically during pregnancy and then drop precipitously after childbirth. Zuranolone works through modulating GABA-A, a neurotransmitter implicated in the development of depression.

“It is encouraging that postpartum individuals may now have more options to manage a debilitating condition that affects them and their families,” said Christopher Zahn, MD, interim CEO and chief of clinical practice and health equity and quality for the American College of Obstetricians and Gynecologists (ACOG).

ACOG recommends women be screened for depression at least three times – during early pregnancy, later in pregnancy, and again after delivery. A decision to start this or any other medicine should be individualized and based on shared decision-making between a patient and doctor, Dr. Zahn added.

The cost of zuranolone is not yet known. Dr. Yonkers said cost of the infusion can serve as a cautionary tale for the manufacturer. Some reports put the infusion cost at $34,000. “Cost is going to be an important component to this. The previous intervention was priced so high that it was not affordable to many people and it was difficult to access.”
 

Beyond ‘baby blues’

The APA has changed the name from “postpartum depression” to “peripartum depression” because evidence suggests feelings and symptoms also can start late in pregnancy. “It means you don’t have to wait until somebody delivers to screen for depression. We have to recognize that depression can occur during pregnancy,” Dr. Yonkers said. “In fact it is not uncommon during the third trimester.”

No matter when it starts, the condition can be “very serious,” particularly if the person already experiences depression, including bipolar disorder, Dr. Yonkers added.

Postpartum depression “is more than just ‘baby blues.’ It is a potentially debilitating illness that causes feelings of intense sadness and worthlessness, making it difficult to care for and bond with your newborn,” Dr. Gopalan said.
 

Can be a medical emergency

Severe postpartum depression requires immediate attention and treatment.

“One of the things we have to be cautious about is for people with previous predisposition to hurt themselves,” Dr. Yonkers said. “It is therefore important to consider somebody’s medical and behavioral health history as well.

“For an individual with recurring depression or severe episodes of depression, this may not be sufficient, because they are just going to get these 14 days of therapy,” Dr. Yonkers said. “They may need ongoing antidepressants.

“It may not be the right pill for everybody,” Dr. Yonkers added. She recommended everyone be followed closely during and after treatment “to make sure they are responding and to monitor for relapse.”
 

The science that led to approval

The clinical trials showed early response in patients with severe postpartum depression. Researchers conducted two studies of women who developed a major depressive episode in the third trimester of pregnancy or within 4 weeks of delivery. They found women who took zuranolone once in the evening for 14 days “showed significantly more improvement in their symptoms compared to those in the placebo group.”

The antidepressant effect lasted at least 4 weeks after stopping the medication.

Drowsiness, dizziness, diarrhea, fatigue, nasopharyngitis, and urinary tract infection were the most common side effects. The label has a boxed warning noting that the medication can affect a person’s ability to drive and perform other potentially hazardous activities. Use of zuranolone may also cause suicidal thoughts and behavior, according to an FDA news release announcing the approval.
 

The start of more help for mothers?

Zuranolone is not a cure-all. As with most psychiatric prescriptions, the medication likely will work best in conjunction with behavioral health treatments such as psychotherapy, use of other medications, behavioral management, support groups, and self-care tools such as meditation, exercise, and yoga, Dr. Gopalan said.

Dr. Oreck said she hopes this first pill approval will lead to more discoveries. “I hope this is the beginning of more innovation and development of novel treatments that can target women’s mental health issues specifically – female reproductive hormones impact mental health in unique ways and it’s exciting to finally see research and development dollars dedicated to them,” she said. “The FDA approval of this pill provides the potential to improve the lives of millions of Americans suffering from postpartum depression.”

Dr. Oreck, Dr. Yonkers, Dr. Gopalan, and Dr. Zahn have disclosed no relevant financial relationships.
 

A version of this article first appeared on Medscape.com.

For the first time, the Food and Drug Administration approved a pill taken once daily for 14 days to help women manage the often strong, sometimes overpowering symptoms of postpartum depression.

Several experts in mental health and women’s health offered their views of this new treatment option for a condition that affects an estimated 1 in 8 women in the United States. What will it mean for easing symptoms such as hopelessness, crankiness, and lack of interest in bonding with the baby or, in the case of multiples, babies – and in some cases, thoughts of death or suicide?
 

A fast-acting option

“We don’t have many oral medications that are fast-acting antidepressants, so this is incredibly exciting,” said Sarah Oreck, MD, a psychiatrist in private practice in Los Angeles who specializes in reproductive psychiatry. The rapid response is likely because the medication targets the hormonal mechanism underlying postpartum depression, she added.

Zuranolone (Zurzuvae, Biogen/Sage) is different from most other antidepressants – it is designed to be taken for a shorter period. Also, Because zuranolone is a pill, it is more convenient to take than the other FDA-approved treatment, the IV infusion brexanolone (Zulresso, Sage).

“It’s obviously game changing to have something in pill form. The infusion has to be done at an infusion center to monitor people for any complications,” said Kimberly Yonkers, MD, a psychiatrist specializing in women’s health, a Distinguished Life Fellow of the American Psychiatric Association (APA), and the Katz Family Chair of Psychiatry at the University of Massachusetts Chan Medical School/UMass Memorial Medical Center in Worcester.

Women may experience improvement in postpartum depression in as soon as 3 days after starting the medication. In contrast, “typical antidepressants can take up to 2 weeks before patients notice a difference and 4 to 8 weeks to see a full response. A fast-acting pill that can be taken orally could be an ideal option for the 15% to 20% of women who experience postpartum depression,” said Priya Gopalan, MD, a psychiatrist with UPMC Western Psychiatric Hospital and Magee-Womens Hospital in Pittsburgh.

The medical community, and reproductive psychiatrists in particular, has always suspected differences in the biological underpinnings of postpartum depression and major depressive disorder, Dr. Oreck said. “We know that postpartum depression looks different from major depressive disorder and that hormonal shifts during pregnancy and postpartum are a huge risk factor for postpartum depression,” she said.

Although selective serotonin reuptake inhibitors (SSRIs) are helpful and currently the standard of care for treating moderate to severe postpartum depression in combination with therapy, Dr. Oreck added, early studies suggest that zuranolone may work faster and potentially be more effective than SSRIs in treating the condition.

Zuranolone is a version of a naturally occurring hormone called allopregnanolone, a metabolite of progesterone. Concentrations of allopregnanolone rise dramatically during pregnancy and then drop precipitously after childbirth. Zuranolone works through modulating GABA-A, a neurotransmitter implicated in the development of depression.

“It is encouraging that postpartum individuals may now have more options to manage a debilitating condition that affects them and their families,” said Christopher Zahn, MD, interim CEO and chief of clinical practice and health equity and quality for the American College of Obstetricians and Gynecologists (ACOG).

ACOG recommends women be screened for depression at least three times – during early pregnancy, later in pregnancy, and again after delivery. A decision to start this or any other medicine should be individualized and based on shared decision-making between a patient and doctor, Dr. Zahn added.

The cost of zuranolone is not yet known. Dr. Yonkers said cost of the infusion can serve as a cautionary tale for the manufacturer. Some reports put the infusion cost at $34,000. “Cost is going to be an important component to this. The previous intervention was priced so high that it was not affordable to many people and it was difficult to access.”
 

Beyond ‘baby blues’

The APA has changed the name from “postpartum depression” to “peripartum depression” because evidence suggests feelings and symptoms also can start late in pregnancy. “It means you don’t have to wait until somebody delivers to screen for depression. We have to recognize that depression can occur during pregnancy,” Dr. Yonkers said. “In fact it is not uncommon during the third trimester.”

No matter when it starts, the condition can be “very serious,” particularly if the person already experiences depression, including bipolar disorder, Dr. Yonkers added.

Postpartum depression “is more than just ‘baby blues.’ It is a potentially debilitating illness that causes feelings of intense sadness and worthlessness, making it difficult to care for and bond with your newborn,” Dr. Gopalan said.
 

Can be a medical emergency

Severe postpartum depression requires immediate attention and treatment.

“One of the things we have to be cautious about is for people with previous predisposition to hurt themselves,” Dr. Yonkers said. “It is therefore important to consider somebody’s medical and behavioral health history as well.

“For an individual with recurring depression or severe episodes of depression, this may not be sufficient, because they are just going to get these 14 days of therapy,” Dr. Yonkers said. “They may need ongoing antidepressants.

“It may not be the right pill for everybody,” Dr. Yonkers added. She recommended everyone be followed closely during and after treatment “to make sure they are responding and to monitor for relapse.”
 

The science that led to approval

The clinical trials showed early response in patients with severe postpartum depression. Researchers conducted two studies of women who developed a major depressive episode in the third trimester of pregnancy or within 4 weeks of delivery. They found women who took zuranolone once in the evening for 14 days “showed significantly more improvement in their symptoms compared to those in the placebo group.”

The antidepressant effect lasted at least 4 weeks after stopping the medication.

Drowsiness, dizziness, diarrhea, fatigue, nasopharyngitis, and urinary tract infection were the most common side effects. The label has a boxed warning noting that the medication can affect a person’s ability to drive and perform other potentially hazardous activities. Use of zuranolone may also cause suicidal thoughts and behavior, according to an FDA news release announcing the approval.
 

The start of more help for mothers?

Zuranolone is not a cure-all. As with most psychiatric prescriptions, the medication likely will work best in conjunction with behavioral health treatments such as psychotherapy, use of other medications, behavioral management, support groups, and self-care tools such as meditation, exercise, and yoga, Dr. Gopalan said.

Dr. Oreck said she hopes this first pill approval will lead to more discoveries. “I hope this is the beginning of more innovation and development of novel treatments that can target women’s mental health issues specifically – female reproductive hormones impact mental health in unique ways and it’s exciting to finally see research and development dollars dedicated to them,” she said. “The FDA approval of this pill provides the potential to improve the lives of millions of Americans suffering from postpartum depression.”

Dr. Oreck, Dr. Yonkers, Dr. Gopalan, and Dr. Zahn have disclosed no relevant financial relationships.
 

A version of this article first appeared on Medscape.com.

For the first time, the Food and Drug Administration approved a pill taken once daily for 14 days to help women manage the often strong, sometimes overpowering symptoms of postpartum depression.

Several experts in mental health and women’s health offered their views of this new treatment option for a condition that affects an estimated 1 in 8 women in the United States. What will it mean for easing symptoms such as hopelessness, crankiness, and lack of interest in bonding with the baby or, in the case of multiples, babies – and in some cases, thoughts of death or suicide?
 

A fast-acting option

“We don’t have many oral medications that are fast-acting antidepressants, so this is incredibly exciting,” said Sarah Oreck, MD, a psychiatrist in private practice in Los Angeles who specializes in reproductive psychiatry. The rapid response is likely because the medication targets the hormonal mechanism underlying postpartum depression, she added.

Zuranolone (Zurzuvae, Biogen/Sage) is different from most other antidepressants – it is designed to be taken for a shorter period. Also, Because zuranolone is a pill, it is more convenient to take than the other FDA-approved treatment, the IV infusion brexanolone (Zulresso, Sage).

“It’s obviously game changing to have something in pill form. The infusion has to be done at an infusion center to monitor people for any complications,” said Kimberly Yonkers, MD, a psychiatrist specializing in women’s health, a Distinguished Life Fellow of the American Psychiatric Association (APA), and the Katz Family Chair of Psychiatry at the University of Massachusetts Chan Medical School/UMass Memorial Medical Center in Worcester.

Women may experience improvement in postpartum depression in as soon as 3 days after starting the medication. In contrast, “typical antidepressants can take up to 2 weeks before patients notice a difference and 4 to 8 weeks to see a full response. A fast-acting pill that can be taken orally could be an ideal option for the 15% to 20% of women who experience postpartum depression,” said Priya Gopalan, MD, a psychiatrist with UPMC Western Psychiatric Hospital and Magee-Womens Hospital in Pittsburgh.

The medical community, and reproductive psychiatrists in particular, has always suspected differences in the biological underpinnings of postpartum depression and major depressive disorder, Dr. Oreck said. “We know that postpartum depression looks different from major depressive disorder and that hormonal shifts during pregnancy and postpartum are a huge risk factor for postpartum depression,” she said.

Although selective serotonin reuptake inhibitors (SSRIs) are helpful and currently the standard of care for treating moderate to severe postpartum depression in combination with therapy, Dr. Oreck added, early studies suggest that zuranolone may work faster and potentially be more effective than SSRIs in treating the condition.

Zuranolone is a version of a naturally occurring hormone called allopregnanolone, a metabolite of progesterone. Concentrations of allopregnanolone rise dramatically during pregnancy and then drop precipitously after childbirth. Zuranolone works through modulating GABA-A, a neurotransmitter implicated in the development of depression.

“It is encouraging that postpartum individuals may now have more options to manage a debilitating condition that affects them and their families,” said Christopher Zahn, MD, interim CEO and chief of clinical practice and health equity and quality for the American College of Obstetricians and Gynecologists (ACOG).

ACOG recommends women be screened for depression at least three times – during early pregnancy, later in pregnancy, and again after delivery. A decision to start this or any other medicine should be individualized and based on shared decision-making between a patient and doctor, Dr. Zahn added.

The cost of zuranolone is not yet known. Dr. Yonkers said cost of the infusion can serve as a cautionary tale for the manufacturer. Some reports put the infusion cost at $34,000. “Cost is going to be an important component to this. The previous intervention was priced so high that it was not affordable to many people and it was difficult to access.”
 

Beyond ‘baby blues’

The APA has changed the name from “postpartum depression” to “peripartum depression” because evidence suggests feelings and symptoms also can start late in pregnancy. “It means you don’t have to wait until somebody delivers to screen for depression. We have to recognize that depression can occur during pregnancy,” Dr. Yonkers said. “In fact it is not uncommon during the third trimester.”

No matter when it starts, the condition can be “very serious,” particularly if the person already experiences depression, including bipolar disorder, Dr. Yonkers added.

Postpartum depression “is more than just ‘baby blues.’ It is a potentially debilitating illness that causes feelings of intense sadness and worthlessness, making it difficult to care for and bond with your newborn,” Dr. Gopalan said.
 

Can be a medical emergency

Severe postpartum depression requires immediate attention and treatment.

“One of the things we have to be cautious about is for people with previous predisposition to hurt themselves,” Dr. Yonkers said. “It is therefore important to consider somebody’s medical and behavioral health history as well.

“For an individual with recurring depression or severe episodes of depression, this may not be sufficient, because they are just going to get these 14 days of therapy,” Dr. Yonkers said. “They may need ongoing antidepressants.

“It may not be the right pill for everybody,” Dr. Yonkers added. She recommended everyone be followed closely during and after treatment “to make sure they are responding and to monitor for relapse.”
 

The science that led to approval

The clinical trials showed early response in patients with severe postpartum depression. Researchers conducted two studies of women who developed a major depressive episode in the third trimester of pregnancy or within 4 weeks of delivery. They found women who took zuranolone once in the evening for 14 days “showed significantly more improvement in their symptoms compared to those in the placebo group.”

The antidepressant effect lasted at least 4 weeks after stopping the medication.

Drowsiness, dizziness, diarrhea, fatigue, nasopharyngitis, and urinary tract infection were the most common side effects. The label has a boxed warning noting that the medication can affect a person’s ability to drive and perform other potentially hazardous activities. Use of zuranolone may also cause suicidal thoughts and behavior, according to an FDA news release announcing the approval.
 

The start of more help for mothers?

Zuranolone is not a cure-all. As with most psychiatric prescriptions, the medication likely will work best in conjunction with behavioral health treatments such as psychotherapy, use of other medications, behavioral management, support groups, and self-care tools such as meditation, exercise, and yoga, Dr. Gopalan said.

Dr. Oreck said she hopes this first pill approval will lead to more discoveries. “I hope this is the beginning of more innovation and development of novel treatments that can target women’s mental health issues specifically – female reproductive hormones impact mental health in unique ways and it’s exciting to finally see research and development dollars dedicated to them,” she said. “The FDA approval of this pill provides the potential to improve the lives of millions of Americans suffering from postpartum depression.”

Dr. Oreck, Dr. Yonkers, Dr. Gopalan, and Dr. Zahn have disclosed no relevant financial relationships.
 

A version of this article first appeared on Medscape.com.

Newly discovered genes could explain body fat differences between men and women with obesity, as well as why some people gain excess weight in childhood.

Identifying specific genes adds to growing evidence that biology, in part, drives obesity. Researchers hope the findings will lead to effective treatments, and in the meantime add to the understanding that there are many types of obesity that come from a mix of genes and environmental factors.

Although the study is not the first to point to specific genes, “we were quite surprised by the proposed function of some of the genes we identified,” Lena R. Kaisinger, lead study investigator and a PhD student in the MRC Epidemiology Unit at the University of Cambridge (England), wrote in an email. For example, the genes also manage cell death and influence how cells respond to DNA damage. 

The investigators are not sure why genes involved in body size perform this kind of double duty, which opens avenues for future research.

The gene sequencing study was published online in the journal Cell Genomics.
 

Differences between women and men

The researchers found five new genes in females and two new genes in males linked to greater body mass index (BMI): DIDO1, KIAA1109, MC4R, PTPRG and SLC12A5 in women and MC4R and SLTM in men. People who recall having obesity as a child were more likely to have rare genetic changes in two other genes, OBSCN and MADD.

“The key thing is that when you see real genes with real gene names, it really makes real the notion that genetics underlie obesity,” said Lee Kaplan, MD, PhD, director of the Obesity and Metabolism Institute in Boston, who was not affiliated with the research.

Ms. Kaisinger and colleagues found these significant genetic differences by studying genomes of about 420,000 people stored in the UK Biobank, a huge biomedical database. The researchers decided to look at genes by sex and age because these are “two areas that we still know very little about,” Ms. Kaisinger said.

“We know that different types of obesity connect to different ages,” said Dr. Kaplan, who is also past president of the Obesity Society. “But what they’ve done now is find genes that are associated with particular subtypes of obesity ... some more common in one sex and some more common in different phases of life, including early onset obesity.”
 

The future is already here

Treatment for obesity based on a person’s genes already exists. For example, in June 2022, the Food and Drug Administration approved setmelanotide (Imcivree) for weight management in adults and children aged over 6 years with specific genetic markers. 

Even as encouraging as setmelanotide is to Ms. Kaisinger and colleagues, these are still early days for translating the current research findings into clinical obesity tests and potential treatment, she said.

The “holy grail,” Dr. Kaplan said, is a future where people get screened for a particular genetic profile and their provider can say something like, “You’re probably most susceptible to this type, so we’ll treat you with this particular drug that’s been developed for people with this phenotype.”

Dr. Kaplan added: “That’s exactly what we are trying to do.”

Moving forward, Ms. Kaisinger and colleagues plan to repeat the study in larger and more diverse populations. They also plan to reverse the usual road map for studies, which typically start in animals and then progress to humans.

“We plan to take the most promising gene candidates forward into mouse models to learn more about their function and how exactly their dysfunction results in obesity,” Ms. Kaisinger said. 

Three study coauthors are employees and shareholders of Adrestia Therapeutics. No other conflicts of interest were reported.

A version of this article appeared on WebMD.com.

Newly discovered genes could explain body fat differences between men and women with obesity, as well as why some people gain excess weight in childhood.

Identifying specific genes adds to growing evidence that biology, in part, drives obesity. Researchers hope the findings will lead to effective treatments, and in the meantime add to the understanding that there are many types of obesity that come from a mix of genes and environmental factors.

Although the study is not the first to point to specific genes, “we were quite surprised by the proposed function of some of the genes we identified,” Lena R. Kaisinger, lead study investigator and a PhD student in the MRC Epidemiology Unit at the University of Cambridge (England), wrote in an email. For example, the genes also manage cell death and influence how cells respond to DNA damage. 

The investigators are not sure why genes involved in body size perform this kind of double duty, which opens avenues for future research.

The gene sequencing study was published online in the journal Cell Genomics.
 

Differences between women and men

The researchers found five new genes in females and two new genes in males linked to greater body mass index (BMI): DIDO1, KIAA1109, MC4R, PTPRG and SLC12A5 in women and MC4R and SLTM in men. People who recall having obesity as a child were more likely to have rare genetic changes in two other genes, OBSCN and MADD.

“The key thing is that when you see real genes with real gene names, it really makes real the notion that genetics underlie obesity,” said Lee Kaplan, MD, PhD, director of the Obesity and Metabolism Institute in Boston, who was not affiliated with the research.

Ms. Kaisinger and colleagues found these significant genetic differences by studying genomes of about 420,000 people stored in the UK Biobank, a huge biomedical database. The researchers decided to look at genes by sex and age because these are “two areas that we still know very little about,” Ms. Kaisinger said.

“We know that different types of obesity connect to different ages,” said Dr. Kaplan, who is also past president of the Obesity Society. “But what they’ve done now is find genes that are associated with particular subtypes of obesity ... some more common in one sex and some more common in different phases of life, including early onset obesity.”
 

The future is already here

Treatment for obesity based on a person’s genes already exists. For example, in June 2022, the Food and Drug Administration approved setmelanotide (Imcivree) for weight management in adults and children aged over 6 years with specific genetic markers. 

Even as encouraging as setmelanotide is to Ms. Kaisinger and colleagues, these are still early days for translating the current research findings into clinical obesity tests and potential treatment, she said.

The “holy grail,” Dr. Kaplan said, is a future where people get screened for a particular genetic profile and their provider can say something like, “You’re probably most susceptible to this type, so we’ll treat you with this particular drug that’s been developed for people with this phenotype.”

Dr. Kaplan added: “That’s exactly what we are trying to do.”

Moving forward, Ms. Kaisinger and colleagues plan to repeat the study in larger and more diverse populations. They also plan to reverse the usual road map for studies, which typically start in animals and then progress to humans.

“We plan to take the most promising gene candidates forward into mouse models to learn more about their function and how exactly their dysfunction results in obesity,” Ms. Kaisinger said. 

Three study coauthors are employees and shareholders of Adrestia Therapeutics. No other conflicts of interest were reported.

A version of this article appeared on WebMD.com.

Newly discovered genes could explain body fat differences between men and women with obesity, as well as why some people gain excess weight in childhood.

Identifying specific genes adds to growing evidence that biology, in part, drives obesity. Researchers hope the findings will lead to effective treatments, and in the meantime add to the understanding that there are many types of obesity that come from a mix of genes and environmental factors.

Although the study is not the first to point to specific genes, “we were quite surprised by the proposed function of some of the genes we identified,” Lena R. Kaisinger, lead study investigator and a PhD student in the MRC Epidemiology Unit at the University of Cambridge (England), wrote in an email. For example, the genes also manage cell death and influence how cells respond to DNA damage. 

The investigators are not sure why genes involved in body size perform this kind of double duty, which opens avenues for future research.

The gene sequencing study was published online in the journal Cell Genomics.
 

Differences between women and men

The researchers found five new genes in females and two new genes in males linked to greater body mass index (BMI): DIDO1, KIAA1109, MC4R, PTPRG and SLC12A5 in women and MC4R and SLTM in men. People who recall having obesity as a child were more likely to have rare genetic changes in two other genes, OBSCN and MADD.

“The key thing is that when you see real genes with real gene names, it really makes real the notion that genetics underlie obesity,” said Lee Kaplan, MD, PhD, director of the Obesity and Metabolism Institute in Boston, who was not affiliated with the research.

Ms. Kaisinger and colleagues found these significant genetic differences by studying genomes of about 420,000 people stored in the UK Biobank, a huge biomedical database. The researchers decided to look at genes by sex and age because these are “two areas that we still know very little about,” Ms. Kaisinger said.

“We know that different types of obesity connect to different ages,” said Dr. Kaplan, who is also past president of the Obesity Society. “But what they’ve done now is find genes that are associated with particular subtypes of obesity ... some more common in one sex and some more common in different phases of life, including early onset obesity.”
 

The future is already here

Treatment for obesity based on a person’s genes already exists. For example, in June 2022, the Food and Drug Administration approved setmelanotide (Imcivree) for weight management in adults and children aged over 6 years with specific genetic markers. 

Even as encouraging as setmelanotide is to Ms. Kaisinger and colleagues, these are still early days for translating the current research findings into clinical obesity tests and potential treatment, she said.

The “holy grail,” Dr. Kaplan said, is a future where people get screened for a particular genetic profile and their provider can say something like, “You’re probably most susceptible to this type, so we’ll treat you with this particular drug that’s been developed for people with this phenotype.”

Dr. Kaplan added: “That’s exactly what we are trying to do.”

Moving forward, Ms. Kaisinger and colleagues plan to repeat the study in larger and more diverse populations. They also plan to reverse the usual road map for studies, which typically start in animals and then progress to humans.

“We plan to take the most promising gene candidates forward into mouse models to learn more about their function and how exactly their dysfunction results in obesity,” Ms. Kaisinger said. 

Three study coauthors are employees and shareholders of Adrestia Therapeutics. No other conflicts of interest were reported.

A version of this article appeared on WebMD.com.

CHICAGO – ChatGPT and other artificial intelligence (AI)–driven natural language processing platforms are here to stay, so like them or not, physicians might as well figure out how to optimize their role in medicine and health care. That’s the takeaway from a three-expert panel session about the technology held at the annual Digestive Disease Week® (DDW).

The chatbot can help doctors to a certain extent by suggesting differential diagnoses, assisting with clinical note-taking, and producing rapid and easy-to-understand patient communication and educational materials, they noted. However, it can also make mistakes. And, unlike a medical trainee who might give a clinical answer and express some doubt, ChatGPT (Open AI/Microsoft) clearly states its findings as fact, even when it’s wrong.

Known as “hallucinating,” this problem of AI inaccuracy was displayed at the packed DDW session.

When asked when Leonardo da Vinci painted the Mona Lisa, for example, ChatGPT replied 1815. That’s off by about 300 years; the masterpiece was created sometime between 1503 and 1519. Asked for a fact about George Washington, ChatGPT said he invented the cotton gin. Also not true. (Eli Whitney patented the cotton gin.)

In an example more suited for gastroenterologists at DDW, ChatGPT correctly stated that Barrett esophagus can lead to adenocarcinoma of the esophagus in some cases. However, the technology also said that the condition could lead to prostate cancer.

So, if someone asked ChatGPT for a list of possible risks for Barrett’s esophagus, it would include prostate cancer. A person without medical knowledge “could take it at face value that it causes prostate cancer,” said panelist Sravanthi Parasa, MD, a gastroenterologist at Swedish Medical Center, Seattle.

“That is a lot of misinformation that is going to come our way,” she added at the session, which was sponsored by the American Society for Gastrointestinal Endoscopy.

The potential for inaccuracy is a downside to ChatGPT, agreed panelist Prateek Sharma, MD, a gastroenterologist at the University of Kansas Medical Center in Kansas City, Kansas.

“There is no quality control. You have to double check its answers,” said Dr. Sharma, who is president-elect of ASGE.

ChatGPT is not going to replace physicians in general or gastroenterologists doing endoscopies, said Ian Gralnek, MD, chief of the Institute of Gastroenterology and Hepatology at Emek Medical Center in Afula, Israel.

Even though the tool could play a role in medicine, “we need to be very careful as a society going forward ... and see where things are going,” Dr. Gralnek said.
 

How you ask makes a difference

Future iterations of ChatGPT are likely to produce fewer hallucinations, the experts said. In the meantime, users can lower the risk by paying attention to how they’re wording their queries, a practice known as “prompt engineering.”

It’s best to ask a question that has a firm answer to it. If you ask a vague question, you’ll likely get a vague answer, Dr. Sharma said.

ChatGPT is a large language model (LLM). GPT stands for “generative pretrained transformer” – specialized algorithms that find long-range patterns in sequences of data. LLMs can predict the next word in a sentence.

“That’s why this is also called generative AI,” Dr. Sharma said. “For example, if you put in ‘Where are we?’, it will predict for you that perhaps the next word is ‘going?’ ”

The current public version is ChatGPT 3.5, which was trained on open-source online information up until early 2022. It can gather information from open-access scientific journals and medical society guidelines, as well as from Twitter, Reddit, and other social media. It does not have access to private information, like electronic health records.

The use of ChatGPT has exploded in the past 6 months, Dr. Sharma said.

“ChatGPT has been the most-searched website or platform ever in history since it was launched in December of 2022,” he said.
 

What’s in it for doctors?

Although not specifically trained for health care–related tasks, the panelists noted that ChatGPT does have potential as a virtual medical assistant, chatbot, clinical decision-support tool, source of medical education, natural language processor for documentation, or medical note-taker.

ChatGPT can help physicians write a letter of support to a patient who, for example, was just diagnosed with stage IV colon cancer. It can do that in only 15 seconds, whereas it would take us much longer, Dr. Sharma said.

ChatGPT is the “next frontier” for generating patient education materials, Dr. Parasa said. It can help time-constrained health care providers, as long as the information is accurate.

ChatGPT 4.0, now available by subscription, can do “almost real-time note-taking during patient encounters,” she added.

Another reason to be familiar with the technology: “Many of your patients are using it, even if you don’t know about it,” Dr. Sharma said.
 

Questions abound

A conference attendee asked the panel what to do when a patient comes in with ChatGPT medical advice that does not align with official guidelines.

Dr. Gralnek said that he would explain to patients that medical information based on guidelines are not “black and white.” The panel likened it to how patients come to an appointment now armed with information from the Internet, which is not always correct, that must then be countered by doctors. The same would likely happen with ChatGPT.

Another attendee asked whether ChatGPT eventually will work in accordance with electronic health record systems.

“Open AI and Microsoft are already working with Epic,” Dr. Parasa said.

A question arose about the reading level of information provided by ChatGPT. Dr. Parasa noted that it’s not standard. However, a person can prompt ChatGPT to provide an answer either at an eighth-grade reading level or for a well-trained physician.

Dr. Sharma offered a final warning: The technology learns over time.

“It knows what your habits are. It will learn what you’re doing,” Dr. Sharma said. “Everything else on your browsers that are open, it’s learning from that also. So be careful what websites you visit before you go to ChatGPT.”

Dr. Sharma is a stock shareholder in Microsoft. Dr. Parasa and Dr. Gralneck reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article originally appeared on Medscape.com.

CHICAGO – ChatGPT and other artificial intelligence (AI)–driven natural language processing platforms are here to stay, so like them or not, physicians might as well figure out how to optimize their role in medicine and health care. That’s the takeaway from a three-expert panel session about the technology held at the annual Digestive Disease Week® (DDW).

The chatbot can help doctors to a certain extent by suggesting differential diagnoses, assisting with clinical note-taking, and producing rapid and easy-to-understand patient communication and educational materials, they noted. However, it can also make mistakes. And, unlike a medical trainee who might give a clinical answer and express some doubt, ChatGPT (Open AI/Microsoft) clearly states its findings as fact, even when it’s wrong.

Known as “hallucinating,” this problem of AI inaccuracy was displayed at the packed DDW session.

When asked when Leonardo da Vinci painted the Mona Lisa, for example, ChatGPT replied 1815. That’s off by about 300 years; the masterpiece was created sometime between 1503 and 1519. Asked for a fact about George Washington, ChatGPT said he invented the cotton gin. Also not true. (Eli Whitney patented the cotton gin.)

In an example more suited for gastroenterologists at DDW, ChatGPT correctly stated that Barrett esophagus can lead to adenocarcinoma of the esophagus in some cases. However, the technology also said that the condition could lead to prostate cancer.

So, if someone asked ChatGPT for a list of possible risks for Barrett’s esophagus, it would include prostate cancer. A person without medical knowledge “could take it at face value that it causes prostate cancer,” said panelist Sravanthi Parasa, MD, a gastroenterologist at Swedish Medical Center, Seattle.

“That is a lot of misinformation that is going to come our way,” she added at the session, which was sponsored by the American Society for Gastrointestinal Endoscopy.

The potential for inaccuracy is a downside to ChatGPT, agreed panelist Prateek Sharma, MD, a gastroenterologist at the University of Kansas Medical Center in Kansas City, Kansas.

“There is no quality control. You have to double check its answers,” said Dr. Sharma, who is president-elect of ASGE.

ChatGPT is not going to replace physicians in general or gastroenterologists doing endoscopies, said Ian Gralnek, MD, chief of the Institute of Gastroenterology and Hepatology at Emek Medical Center in Afula, Israel.

Even though the tool could play a role in medicine, “we need to be very careful as a society going forward ... and see where things are going,” Dr. Gralnek said.
 

How you ask makes a difference

Future iterations of ChatGPT are likely to produce fewer hallucinations, the experts said. In the meantime, users can lower the risk by paying attention to how they’re wording their queries, a practice known as “prompt engineering.”

It’s best to ask a question that has a firm answer to it. If you ask a vague question, you’ll likely get a vague answer, Dr. Sharma said.

ChatGPT is a large language model (LLM). GPT stands for “generative pretrained transformer” – specialized algorithms that find long-range patterns in sequences of data. LLMs can predict the next word in a sentence.

“That’s why this is also called generative AI,” Dr. Sharma said. “For example, if you put in ‘Where are we?’, it will predict for you that perhaps the next word is ‘going?’ ”

The current public version is ChatGPT 3.5, which was trained on open-source online information up until early 2022. It can gather information from open-access scientific journals and medical society guidelines, as well as from Twitter, Reddit, and other social media. It does not have access to private information, like electronic health records.

The use of ChatGPT has exploded in the past 6 months, Dr. Sharma said.

“ChatGPT has been the most-searched website or platform ever in history since it was launched in December of 2022,” he said.
 

What’s in it for doctors?

Although not specifically trained for health care–related tasks, the panelists noted that ChatGPT does have potential as a virtual medical assistant, chatbot, clinical decision-support tool, source of medical education, natural language processor for documentation, or medical note-taker.

ChatGPT can help physicians write a letter of support to a patient who, for example, was just diagnosed with stage IV colon cancer. It can do that in only 15 seconds, whereas it would take us much longer, Dr. Sharma said.

ChatGPT is the “next frontier” for generating patient education materials, Dr. Parasa said. It can help time-constrained health care providers, as long as the information is accurate.

ChatGPT 4.0, now available by subscription, can do “almost real-time note-taking during patient encounters,” she added.

Another reason to be familiar with the technology: “Many of your patients are using it, even if you don’t know about it,” Dr. Sharma said.
 

Questions abound

A conference attendee asked the panel what to do when a patient comes in with ChatGPT medical advice that does not align with official guidelines.

Dr. Gralnek said that he would explain to patients that medical information based on guidelines are not “black and white.” The panel likened it to how patients come to an appointment now armed with information from the Internet, which is not always correct, that must then be countered by doctors. The same would likely happen with ChatGPT.

Another attendee asked whether ChatGPT eventually will work in accordance with electronic health record systems.

“Open AI and Microsoft are already working with Epic,” Dr. Parasa said.

A question arose about the reading level of information provided by ChatGPT. Dr. Parasa noted that it’s not standard. However, a person can prompt ChatGPT to provide an answer either at an eighth-grade reading level or for a well-trained physician.

Dr. Sharma offered a final warning: The technology learns over time.

“It knows what your habits are. It will learn what you’re doing,” Dr. Sharma said. “Everything else on your browsers that are open, it’s learning from that also. So be careful what websites you visit before you go to ChatGPT.”

Dr. Sharma is a stock shareholder in Microsoft. Dr. Parasa and Dr. Gralneck reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article originally appeared on Medscape.com.

CHICAGO – ChatGPT and other artificial intelligence (AI)–driven natural language processing platforms are here to stay, so like them or not, physicians might as well figure out how to optimize their role in medicine and health care. That’s the takeaway from a three-expert panel session about the technology held at the annual Digestive Disease Week® (DDW).

The chatbot can help doctors to a certain extent by suggesting differential diagnoses, assisting with clinical note-taking, and producing rapid and easy-to-understand patient communication and educational materials, they noted. However, it can also make mistakes. And, unlike a medical trainee who might give a clinical answer and express some doubt, ChatGPT (Open AI/Microsoft) clearly states its findings as fact, even when it’s wrong.

Known as “hallucinating,” this problem of AI inaccuracy was displayed at the packed DDW session.

When asked when Leonardo da Vinci painted the Mona Lisa, for example, ChatGPT replied 1815. That’s off by about 300 years; the masterpiece was created sometime between 1503 and 1519. Asked for a fact about George Washington, ChatGPT said he invented the cotton gin. Also not true. (Eli Whitney patented the cotton gin.)

In an example more suited for gastroenterologists at DDW, ChatGPT correctly stated that Barrett esophagus can lead to adenocarcinoma of the esophagus in some cases. However, the technology also said that the condition could lead to prostate cancer.

So, if someone asked ChatGPT for a list of possible risks for Barrett’s esophagus, it would include prostate cancer. A person without medical knowledge “could take it at face value that it causes prostate cancer,” said panelist Sravanthi Parasa, MD, a gastroenterologist at Swedish Medical Center, Seattle.

“That is a lot of misinformation that is going to come our way,” she added at the session, which was sponsored by the American Society for Gastrointestinal Endoscopy.

The potential for inaccuracy is a downside to ChatGPT, agreed panelist Prateek Sharma, MD, a gastroenterologist at the University of Kansas Medical Center in Kansas City, Kansas.

“There is no quality control. You have to double check its answers,” said Dr. Sharma, who is president-elect of ASGE.

ChatGPT is not going to replace physicians in general or gastroenterologists doing endoscopies, said Ian Gralnek, MD, chief of the Institute of Gastroenterology and Hepatology at Emek Medical Center in Afula, Israel.

Even though the tool could play a role in medicine, “we need to be very careful as a society going forward ... and see where things are going,” Dr. Gralnek said.
 

How you ask makes a difference

Future iterations of ChatGPT are likely to produce fewer hallucinations, the experts said. In the meantime, users can lower the risk by paying attention to how they’re wording their queries, a practice known as “prompt engineering.”

It’s best to ask a question that has a firm answer to it. If you ask a vague question, you’ll likely get a vague answer, Dr. Sharma said.

ChatGPT is a large language model (LLM). GPT stands for “generative pretrained transformer” – specialized algorithms that find long-range patterns in sequences of data. LLMs can predict the next word in a sentence.

“That’s why this is also called generative AI,” Dr. Sharma said. “For example, if you put in ‘Where are we?’, it will predict for you that perhaps the next word is ‘going?’ ”

The current public version is ChatGPT 3.5, which was trained on open-source online information up until early 2022. It can gather information from open-access scientific journals and medical society guidelines, as well as from Twitter, Reddit, and other social media. It does not have access to private information, like electronic health records.

The use of ChatGPT has exploded in the past 6 months, Dr. Sharma said.

“ChatGPT has been the most-searched website or platform ever in history since it was launched in December of 2022,” he said.
 

What’s in it for doctors?

Although not specifically trained for health care–related tasks, the panelists noted that ChatGPT does have potential as a virtual medical assistant, chatbot, clinical decision-support tool, source of medical education, natural language processor for documentation, or medical note-taker.

ChatGPT can help physicians write a letter of support to a patient who, for example, was just diagnosed with stage IV colon cancer. It can do that in only 15 seconds, whereas it would take us much longer, Dr. Sharma said.

ChatGPT is the “next frontier” for generating patient education materials, Dr. Parasa said. It can help time-constrained health care providers, as long as the information is accurate.

ChatGPT 4.0, now available by subscription, can do “almost real-time note-taking during patient encounters,” she added.

Another reason to be familiar with the technology: “Many of your patients are using it, even if you don’t know about it,” Dr. Sharma said.
 

Questions abound

A conference attendee asked the panel what to do when a patient comes in with ChatGPT medical advice that does not align with official guidelines.

Dr. Gralnek said that he would explain to patients that medical information based on guidelines are not “black and white.” The panel likened it to how patients come to an appointment now armed with information from the Internet, which is not always correct, that must then be countered by doctors. The same would likely happen with ChatGPT.

Another attendee asked whether ChatGPT eventually will work in accordance with electronic health record systems.

“Open AI and Microsoft are already working with Epic,” Dr. Parasa said.

A question arose about the reading level of information provided by ChatGPT. Dr. Parasa noted that it’s not standard. However, a person can prompt ChatGPT to provide an answer either at an eighth-grade reading level or for a well-trained physician.

Dr. Sharma offered a final warning: The technology learns over time.

“It knows what your habits are. It will learn what you’re doing,” Dr. Sharma said. “Everything else on your browsers that are open, it’s learning from that also. So be careful what websites you visit before you go to ChatGPT.”

Dr. Sharma is a stock shareholder in Microsoft. Dr. Parasa and Dr. Gralneck reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article originally appeared on Medscape.com.

CHICAGO – A new agent under consideration for approval by the Food and Drug Administration to treat moderately to severely active ulcerative colitis (UC) has an “acceptable” safety profile, new evidence reveals.

Etrasimod (Arena Pharma/Pfizer) is an oral sphingosine-1-phosphate (S1P) receptor that binds with high affinity to receptors 1, 4, and 5. If approved by the FDA, etrasimod could become the second agent in the S1P class approved for ulcerative colitis in the United States. The other agent, ozanimod (Zeposia), received FDA approval for treating moderately to severely active UC in May 2021.

The updated safety profile of etrasimod, presented at the annual Digestive Disease Week® (DDW), is based on data from multiple clinical trials, including OASIS phase 2 and the ELEVATE phase 3, placebo-controlled trials, as well as an ongoing, open-label extension study.

“Etrasimod was well tolerated in patients with moderately to severely active UC and had an acceptable safety profile that did not appear to change with longer-term treatment up to 2.5 years,” said OASIS lead author Séverine Vermeire, MD, PhD, an expert on translational research in gastrointestinal disorders and professor of medicine at KU Leuven (Belgium), while presenting the findings at DDW.

Dr. Vermeire noted that data show an elevated risk for atrioventricular (AV) block or bradycardia in a minority of people treated with the agent during this time period. However, most of the heart-related risk was during induction, and the risks could be minimized by ordering an electrocardiogram before prescribing, she said.
 

Cumulative safety data

Researchers separated the trial participants into two cohorts. The all-UC cohort consisted of 956 patients who took at least one dose of etrasimod. The placebo-controlled cohort consisted of 629 patients taking etrasimod and 314 patients who took a placebo. Some patients participated in more than one study, the researchers noted.

In both cohorts, mean duration of disease was about 7 years, about 42% of all participants were female, and mean age was about 41 years.

The investigators looked at the frequency of adverse events and exposure-adjusted incidence rates from the OASIS phase 2 and the ELEVATE phase 3 placebo-controlled trials, as well as an ongoing, open-label extension study. They also assessed safety in placebo and 1 mg or 2 mg etrasimod in the phase 2 NCT02447302 or two phase 3 trials, NCT03945188 and NCT03996369, reported up until Jan. 31, 2022.

There were 770 patient-years of etrasimod exposure in the all-UC cohort, while exposure in the placebo-controlled cohort was 288 patient-years in the etrasimod group and 115 patient-years in the placebo group. Mean exposure to etrasimod was 42 weeks in the all-UC cohort. Mean exposure in the placebo-controlled cohort was 24 weeks in the etrasimod group and 19 weeks in the placebo group.

Because of the mechanism of action of etrasimod, Dr. Vermeire and colleagues focused on cardiovascular events, macular edema, severe or opportunistic infections, herpes zoster infections, and malignancies.

Eleven patients (1.8%) treated with etrasimod reported bradycardia or sinus bradycardia in the placebo-controlled research, and 9 of 11 were asymptomatic. No bradycardia was associated with taking a placebo. In the all-UC cohort, bradycardia or sinus bradycardia was reported in 14 patients (1.5%).

“Bradycardia is something you need to tell patients may occur,” Dr. Vermeire said. “Most of the bradycardia occurred on day one or day two, mostly on day one.”

Four people taking etrasimod in the placebo-controlled cohort and 7 people in the all-UC cohort had AV block of the first or second degree. No reports of AV block occurred in the placebo group.

“Other adverse events of special interest, including hypertension and macular edema, were all rare and similar between the treatment arms,” Dr. Vermeire said.

Herpes zoster infections were reported in two patients taking etrasimod and two taking placebo in the placebo-controlled cohort. Seven cases were reported in the all-UC cohort. Dr. Vermeire said she advocates vaccinating patients against herpes zoster soon after UC diagnosis, if possible.

In the placebo-controlled cohort, 11 patients taking etrasimod and two patients taking placebo experienced elevated ALT. This was fewer than 2% of patients. One patient taking etrasimod and one receiving placebo discontinued the study for this reason. In the all-UC cohort, 27 people experienced elevated ALT.

In the placebo-controlled cohort, 13 people treated with etrasimod and two taking placebo developed elevated gamma-glutamyltransferase. This adverse event was reported in 32 patients in the all-UC cohort.

There were no deaths reported in the placebo-controlled cohort of patients. One patient in the all-UC cohort developed a neuroendocrine tumor and died. The person received etrasimod 2 mg daily for about 6 months before the event’s onset. “This was assessed as unlikely related to the study treatment as judged by investigators,” Dr. Vermeire said.

Limitations of the study include a relatively short average duration of exposure to etrasimod.

“As the study continues, we will continue collecting and reporting the safety data,” Dr. Vermeire said.
 

A well-tolerated therapy

“The important take-home message is that patients tolerated therapy very well,” said session comoderator Jordan E. Axelrad, MD, MPH, when asked to comment.

There were very few adverse events, and of these, they were mostly minor, with patients being able to continue on therapy in large part, added Dr. Axelrad, a gastroenterologist at the Inflammatory Bowel Disease Center at NYU Langone Health, New York.

Physicians will “need to get comfortable” with ordering an ECG to screen patients before prescribing etrasimod, he noted.

“Once we can get past that hurdle [of ordering an ECG], we should be integrating it into our practice,” Dr. Axelrad said.

The study was funded by Arena Pharmaceuticals, which was acquired by Pfizer; Pfizer completed the acquisition in March 2022. Dr. Vermeire reported receiving consulting and speaking fees from Arena Pharmaceuticals and grant and research support from Pfizer. Dr. Axelrad reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article originally appeared on Medscape.com.

CHICAGO – A new agent under consideration for approval by the Food and Drug Administration to treat moderately to severely active ulcerative colitis (UC) has an “acceptable” safety profile, new evidence reveals.

Etrasimod (Arena Pharma/Pfizer) is an oral sphingosine-1-phosphate (S1P) receptor that binds with high affinity to receptors 1, 4, and 5. If approved by the FDA, etrasimod could become the second agent in the S1P class approved for ulcerative colitis in the United States. The other agent, ozanimod (Zeposia), received FDA approval for treating moderately to severely active UC in May 2021.

The updated safety profile of etrasimod, presented at the annual Digestive Disease Week® (DDW), is based on data from multiple clinical trials, including OASIS phase 2 and the ELEVATE phase 3, placebo-controlled trials, as well as an ongoing, open-label extension study.

“Etrasimod was well tolerated in patients with moderately to severely active UC and had an acceptable safety profile that did not appear to change with longer-term treatment up to 2.5 years,” said OASIS lead author Séverine Vermeire, MD, PhD, an expert on translational research in gastrointestinal disorders and professor of medicine at KU Leuven (Belgium), while presenting the findings at DDW.

Dr. Vermeire noted that data show an elevated risk for atrioventricular (AV) block or bradycardia in a minority of people treated with the agent during this time period. However, most of the heart-related risk was during induction, and the risks could be minimized by ordering an electrocardiogram before prescribing, she said.
 

Cumulative safety data

Researchers separated the trial participants into two cohorts. The all-UC cohort consisted of 956 patients who took at least one dose of etrasimod. The placebo-controlled cohort consisted of 629 patients taking etrasimod and 314 patients who took a placebo. Some patients participated in more than one study, the researchers noted.

In both cohorts, mean duration of disease was about 7 years, about 42% of all participants were female, and mean age was about 41 years.

The investigators looked at the frequency of adverse events and exposure-adjusted incidence rates from the OASIS phase 2 and the ELEVATE phase 3 placebo-controlled trials, as well as an ongoing, open-label extension study. They also assessed safety in placebo and 1 mg or 2 mg etrasimod in the phase 2 NCT02447302 or two phase 3 trials, NCT03945188 and NCT03996369, reported up until Jan. 31, 2022.

There were 770 patient-years of etrasimod exposure in the all-UC cohort, while exposure in the placebo-controlled cohort was 288 patient-years in the etrasimod group and 115 patient-years in the placebo group. Mean exposure to etrasimod was 42 weeks in the all-UC cohort. Mean exposure in the placebo-controlled cohort was 24 weeks in the etrasimod group and 19 weeks in the placebo group.

Because of the mechanism of action of etrasimod, Dr. Vermeire and colleagues focused on cardiovascular events, macular edema, severe or opportunistic infections, herpes zoster infections, and malignancies.

Eleven patients (1.8%) treated with etrasimod reported bradycardia or sinus bradycardia in the placebo-controlled research, and 9 of 11 were asymptomatic. No bradycardia was associated with taking a placebo. In the all-UC cohort, bradycardia or sinus bradycardia was reported in 14 patients (1.5%).

“Bradycardia is something you need to tell patients may occur,” Dr. Vermeire said. “Most of the bradycardia occurred on day one or day two, mostly on day one.”

Four people taking etrasimod in the placebo-controlled cohort and 7 people in the all-UC cohort had AV block of the first or second degree. No reports of AV block occurred in the placebo group.

“Other adverse events of special interest, including hypertension and macular edema, were all rare and similar between the treatment arms,” Dr. Vermeire said.

Herpes zoster infections were reported in two patients taking etrasimod and two taking placebo in the placebo-controlled cohort. Seven cases were reported in the all-UC cohort. Dr. Vermeire said she advocates vaccinating patients against herpes zoster soon after UC diagnosis, if possible.

In the placebo-controlled cohort, 11 patients taking etrasimod and two patients taking placebo experienced elevated ALT. This was fewer than 2% of patients. One patient taking etrasimod and one receiving placebo discontinued the study for this reason. In the all-UC cohort, 27 people experienced elevated ALT.

In the placebo-controlled cohort, 13 people treated with etrasimod and two taking placebo developed elevated gamma-glutamyltransferase. This adverse event was reported in 32 patients in the all-UC cohort.

There were no deaths reported in the placebo-controlled cohort of patients. One patient in the all-UC cohort developed a neuroendocrine tumor and died. The person received etrasimod 2 mg daily for about 6 months before the event’s onset. “This was assessed as unlikely related to the study treatment as judged by investigators,” Dr. Vermeire said.

Limitations of the study include a relatively short average duration of exposure to etrasimod.

“As the study continues, we will continue collecting and reporting the safety data,” Dr. Vermeire said.
 

A well-tolerated therapy

“The important take-home message is that patients tolerated therapy very well,” said session comoderator Jordan E. Axelrad, MD, MPH, when asked to comment.

There were very few adverse events, and of these, they were mostly minor, with patients being able to continue on therapy in large part, added Dr. Axelrad, a gastroenterologist at the Inflammatory Bowel Disease Center at NYU Langone Health, New York.

Physicians will “need to get comfortable” with ordering an ECG to screen patients before prescribing etrasimod, he noted.

“Once we can get past that hurdle [of ordering an ECG], we should be integrating it into our practice,” Dr. Axelrad said.

The study was funded by Arena Pharmaceuticals, which was acquired by Pfizer; Pfizer completed the acquisition in March 2022. Dr. Vermeire reported receiving consulting and speaking fees from Arena Pharmaceuticals and grant and research support from Pfizer. Dr. Axelrad reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article originally appeared on Medscape.com.

CHICAGO – A new agent under consideration for approval by the Food and Drug Administration to treat moderately to severely active ulcerative colitis (UC) has an “acceptable” safety profile, new evidence reveals.

Etrasimod (Arena Pharma/Pfizer) is an oral sphingosine-1-phosphate (S1P) receptor that binds with high affinity to receptors 1, 4, and 5. If approved by the FDA, etrasimod could become the second agent in the S1P class approved for ulcerative colitis in the United States. The other agent, ozanimod (Zeposia), received FDA approval for treating moderately to severely active UC in May 2021.

The updated safety profile of etrasimod, presented at the annual Digestive Disease Week® (DDW), is based on data from multiple clinical trials, including OASIS phase 2 and the ELEVATE phase 3, placebo-controlled trials, as well as an ongoing, open-label extension study.

“Etrasimod was well tolerated in patients with moderately to severely active UC and had an acceptable safety profile that did not appear to change with longer-term treatment up to 2.5 years,” said OASIS lead author Séverine Vermeire, MD, PhD, an expert on translational research in gastrointestinal disorders and professor of medicine at KU Leuven (Belgium), while presenting the findings at DDW.

Dr. Vermeire noted that data show an elevated risk for atrioventricular (AV) block or bradycardia in a minority of people treated with the agent during this time period. However, most of the heart-related risk was during induction, and the risks could be minimized by ordering an electrocardiogram before prescribing, she said.
 

Cumulative safety data

Researchers separated the trial participants into two cohorts. The all-UC cohort consisted of 956 patients who took at least one dose of etrasimod. The placebo-controlled cohort consisted of 629 patients taking etrasimod and 314 patients who took a placebo. Some patients participated in more than one study, the researchers noted.

In both cohorts, mean duration of disease was about 7 years, about 42% of all participants were female, and mean age was about 41 years.

The investigators looked at the frequency of adverse events and exposure-adjusted incidence rates from the OASIS phase 2 and the ELEVATE phase 3 placebo-controlled trials, as well as an ongoing, open-label extension study. They also assessed safety in placebo and 1 mg or 2 mg etrasimod in the phase 2 NCT02447302 or two phase 3 trials, NCT03945188 and NCT03996369, reported up until Jan. 31, 2022.

There were 770 patient-years of etrasimod exposure in the all-UC cohort, while exposure in the placebo-controlled cohort was 288 patient-years in the etrasimod group and 115 patient-years in the placebo group. Mean exposure to etrasimod was 42 weeks in the all-UC cohort. Mean exposure in the placebo-controlled cohort was 24 weeks in the etrasimod group and 19 weeks in the placebo group.

Because of the mechanism of action of etrasimod, Dr. Vermeire and colleagues focused on cardiovascular events, macular edema, severe or opportunistic infections, herpes zoster infections, and malignancies.

Eleven patients (1.8%) treated with etrasimod reported bradycardia or sinus bradycardia in the placebo-controlled research, and 9 of 11 were asymptomatic. No bradycardia was associated with taking a placebo. In the all-UC cohort, bradycardia or sinus bradycardia was reported in 14 patients (1.5%).

“Bradycardia is something you need to tell patients may occur,” Dr. Vermeire said. “Most of the bradycardia occurred on day one or day two, mostly on day one.”

Four people taking etrasimod in the placebo-controlled cohort and 7 people in the all-UC cohort had AV block of the first or second degree. No reports of AV block occurred in the placebo group.

“Other adverse events of special interest, including hypertension and macular edema, were all rare and similar between the treatment arms,” Dr. Vermeire said.

Herpes zoster infections were reported in two patients taking etrasimod and two taking placebo in the placebo-controlled cohort. Seven cases were reported in the all-UC cohort. Dr. Vermeire said she advocates vaccinating patients against herpes zoster soon after UC diagnosis, if possible.

In the placebo-controlled cohort, 11 patients taking etrasimod and two patients taking placebo experienced elevated ALT. This was fewer than 2% of patients. One patient taking etrasimod and one receiving placebo discontinued the study for this reason. In the all-UC cohort, 27 people experienced elevated ALT.

In the placebo-controlled cohort, 13 people treated with etrasimod and two taking placebo developed elevated gamma-glutamyltransferase. This adverse event was reported in 32 patients in the all-UC cohort.

There were no deaths reported in the placebo-controlled cohort of patients. One patient in the all-UC cohort developed a neuroendocrine tumor and died. The person received etrasimod 2 mg daily for about 6 months before the event’s onset. “This was assessed as unlikely related to the study treatment as judged by investigators,” Dr. Vermeire said.

Limitations of the study include a relatively short average duration of exposure to etrasimod.

“As the study continues, we will continue collecting and reporting the safety data,” Dr. Vermeire said.
 

A well-tolerated therapy

“The important take-home message is that patients tolerated therapy very well,” said session comoderator Jordan E. Axelrad, MD, MPH, when asked to comment.

There were very few adverse events, and of these, they were mostly minor, with patients being able to continue on therapy in large part, added Dr. Axelrad, a gastroenterologist at the Inflammatory Bowel Disease Center at NYU Langone Health, New York.

Physicians will “need to get comfortable” with ordering an ECG to screen patients before prescribing etrasimod, he noted.

“Once we can get past that hurdle [of ordering an ECG], we should be integrating it into our practice,” Dr. Axelrad said.

The study was funded by Arena Pharmaceuticals, which was acquired by Pfizer; Pfizer completed the acquisition in March 2022. Dr. Vermeire reported receiving consulting and speaking fees from Arena Pharmaceuticals and grant and research support from Pfizer. Dr. Axelrad reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article originally appeared on Medscape.com.

While millions of Americans in the Midwest and on the Eastern Seaboard got some relief from the wildfire smoke from Canada, with more relief expected over the weekend, health experts warned that for at-risk people, some hazardous health effects may persist. 

People with moderate to severe asthma, chronic obstructive pulmonary disease, and other risk factors are used to checking air quality warnings before heading outside. But this situation is anything but typical.

Even people not normally at risk can have burning eyes, a runny nose, and a hard time breathing. These are among the symptoms to watch for as health effects of wildfire smoke. Special considerations should be made for people with heart disease, lung disease, and other conditions that put them at increased risk. Those affected can also have trouble sleeping, anxiety, and ongoing mental health issues.

The smoke will stick around the next few days, possibly clearing out early next week when the winds change direction, Weather Channel meteorologist Ari Sarsalari predicted June 8. But that doesn’t mean any physical or mental health effects will clear up as quickly.

“We are seeing dramatic increases in air pollution, and we are seeing increases in patients coming to the ED and the hospital. We expect that this will increase in the days ahead,” said Meredith McCormack, MD, MHS, a volunteer medical spokesperson for the American Lung Association.

“The air quality in our area – Baltimore – and other surrounding areas is not healthy for anyone,” said Dr. McCormack, who specializes in pulmonary and critical care medicine at Johns Hopkins University, Baltimore.
 

How serious are the health warnings?

Residents of California might be more familiar with the hazards of wildfire smoke, but this is a novel experience for many people along the East Coast. Air quality advisories are popping up on cellphones for people living in Boston, New York, and as far south as Northern Virginia. What should the estimated 75 million to 128 million affected Americans do? 

We asked experts to weigh in on when it’s safe or not safe to spend time outside, when to seek medical help, and the best ways for people to protect themselves.

“It’s important to stay indoors and close all windows to reduce exposure to smoke from wildfires. It’s also essential to stay away from any windows that may not have a good seal, in order to minimize any potential exposure to smoke,” said Robert Glatter, MD, editor at large for Medscape Emergency Medicine and an emergency medicine doctor at Lenox Hill Hospital/Northwell Health in New York.

Dr. Glatter noted that placing moist towels under doors and sealing leaking windows can help. 

Monitor your symptoms, and contact your doctor or go to urgent care, Dr. McCormack advised, if you see any increase in concerning symptoms. These include shortness of breath, coughing, chest tightness, or wheezing. Also make sure you take recommended medications and have enough on hand, she said.
 

Fine particles, big concerns

The weather is warming in many parts of the country, and that can mean air conditioning. Adding a MERV 13 filter to a central air conditioning system could reduce exposure to wildfire smoke. Using a portable indoor air purifier with a HEPA filter also can help people without central air conditioning. The filter can help remove small particles in the air but must be replaced regularly.

Smoke from wildfires contains multiple toxins, including heavy metals, carcinogens, and fine particulate matter (PM) under 2.5 microns. Dr. Glatter explained that these particles are about 100 times thinner than a human hair. Because of their size, they can embed deeper into the airways in the lungs and trigger chronic inflammation.

“This has also been linked to increased rates of lung cancer and brain tumors,” he said, based on a 2022 study in Canada.

The effects of smoke from wildfires can continue for many years. After the 2014 Hazelwood coal mine fire, emergency department visits for respiratory conditions and cardiovascular complaints remained higher for up to 2-5 years later, Dr. Glatter said. Again, large quantities of fine particulate matter in the smoke, less than 2.5 microns (PM 2.5), was to blame.

Exposure to smoke from wildfires during pregnancy has also been linked to abnormal fetal growth, preterm birth, as well as low birth weight, a January 2023 preprint on MedRxiv suggested.
 

Time to wear a mask again?

A properly fitted N95 mask will be the best approach to lessen exposure to smoke from wildfires, “but by itself cannot eliminate all of the risk,” Dr. Glatter said. Surgical masks can add minimal protection, and cloth masks will not provide any significant protection against the damaging effects of smoke from wildfires.

KN95 masks tend to be more comfortable to wear than N95s. But leakage often occurs that can make this type of protection less effective, Dr. Glatter said.

“Masks are important if you need to go outdoors,” Dr. McCormack said. Also, if you’re traveling by car, set the air conditioning system to recirculate to filter the air inside the vehicle, she recommended.
 

What does that number mean?

The federal government monitors air quality nationwide. In case you’re unfamiliar, the U.S. Air Quality Index includes a color-coded scale for ozone levels and particle pollution, the main concern from wildfire smoke. The lowest risk is the Green or satisfactory air quality category, where air pollution poses little or no risk, with an Index number from 0 to 50.

The index gets progressively more serious, from Yellow for moderate risk (51-100) up to a Maroon category, a hazardous range of 300 or higher on the index. When a Maroon advisory is issued, it means an emergency health warning where “everyone is more likely to be affected.”

How do you know if your outside air is polluted? Your local Air Quality Index (AQI) from the EPA can help. It’s a scale of 0 to 500, and the greater the number, the more harmful pollution in the air. It has six levels: good, moderate, unhealthy for sensitive groups, unhealthy, very unhealthy, and hazardous. You can find it at AirNow.gov.

New York is under an air quality alert until midnight Friday with a current “unhealthy” Index report of 200. The city recorded its worst-ever air quality on Wednesday. The New York State Department of Environmental Conservation warns that fine particulate levels – small particles that can enter a person’s lungs – are the biggest concern.

AirNow.gov warns that western New England down to Washington has air quality in the three worst categories – ranging from unhealthy to very unhealthy and hazardous. The ten worst locations on the U.S. Air Quality Index as of 10 a.m. ET on June 8 include the Wilmington, Del., area with an Index of 241, or “very unhealthy.”

• 244: Suburban Washington/Maryland.
• 252: Southern coastal New Jersey.
• 252: Kent County, Del.
• 270: Philadelphia.
• 291: Greater New Castle County, Del.
• 293: Northern Virginia.
• 293: Metropolitan Washington.

These two locations are in the “hazardous” or health emergency warning category:

• 309: Lehigh Valley, Pa.
• 399: Susquehanna Valley, Pa.

To check an air quality advisory in your area, enter your ZIP code at AirNow.gov.

A version of this article first appeared on WebMD.com.

While millions of Americans in the Midwest and on the Eastern Seaboard got some relief from the wildfire smoke from Canada, with more relief expected over the weekend, health experts warned that for at-risk people, some hazardous health effects may persist. 

People with moderate to severe asthma, chronic obstructive pulmonary disease, and other risk factors are used to checking air quality warnings before heading outside. But this situation is anything but typical.

Even people not normally at risk can have burning eyes, a runny nose, and a hard time breathing. These are among the symptoms to watch for as health effects of wildfire smoke. Special considerations should be made for people with heart disease, lung disease, and other conditions that put them at increased risk. Those affected can also have trouble sleeping, anxiety, and ongoing mental health issues.

The smoke will stick around the next few days, possibly clearing out early next week when the winds change direction, Weather Channel meteorologist Ari Sarsalari predicted June 8. But that doesn’t mean any physical or mental health effects will clear up as quickly.

“We are seeing dramatic increases in air pollution, and we are seeing increases in patients coming to the ED and the hospital. We expect that this will increase in the days ahead,” said Meredith McCormack, MD, MHS, a volunteer medical spokesperson for the American Lung Association.

“The air quality in our area – Baltimore – and other surrounding areas is not healthy for anyone,” said Dr. McCormack, who specializes in pulmonary and critical care medicine at Johns Hopkins University, Baltimore.
 

How serious are the health warnings?

Residents of California might be more familiar with the hazards of wildfire smoke, but this is a novel experience for many people along the East Coast. Air quality advisories are popping up on cellphones for people living in Boston, New York, and as far south as Northern Virginia. What should the estimated 75 million to 128 million affected Americans do? 

We asked experts to weigh in on when it’s safe or not safe to spend time outside, when to seek medical help, and the best ways for people to protect themselves.

“It’s important to stay indoors and close all windows to reduce exposure to smoke from wildfires. It’s also essential to stay away from any windows that may not have a good seal, in order to minimize any potential exposure to smoke,” said Robert Glatter, MD, editor at large for Medscape Emergency Medicine and an emergency medicine doctor at Lenox Hill Hospital/Northwell Health in New York.

Dr. Glatter noted that placing moist towels under doors and sealing leaking windows can help. 

Monitor your symptoms, and contact your doctor or go to urgent care, Dr. McCormack advised, if you see any increase in concerning symptoms. These include shortness of breath, coughing, chest tightness, or wheezing. Also make sure you take recommended medications and have enough on hand, she said.
 

Fine particles, big concerns

The weather is warming in many parts of the country, and that can mean air conditioning. Adding a MERV 13 filter to a central air conditioning system could reduce exposure to wildfire smoke. Using a portable indoor air purifier with a HEPA filter also can help people without central air conditioning. The filter can help remove small particles in the air but must be replaced regularly.

Smoke from wildfires contains multiple toxins, including heavy metals, carcinogens, and fine particulate matter (PM) under 2.5 microns. Dr. Glatter explained that these particles are about 100 times thinner than a human hair. Because of their size, they can embed deeper into the airways in the lungs and trigger chronic inflammation.

“This has also been linked to increased rates of lung cancer and brain tumors,” he said, based on a 2022 study in Canada.

The effects of smoke from wildfires can continue for many years. After the 2014 Hazelwood coal mine fire, emergency department visits for respiratory conditions and cardiovascular complaints remained higher for up to 2-5 years later, Dr. Glatter said. Again, large quantities of fine particulate matter in the smoke, less than 2.5 microns (PM 2.5), was to blame.

Exposure to smoke from wildfires during pregnancy has also been linked to abnormal fetal growth, preterm birth, as well as low birth weight, a January 2023 preprint on MedRxiv suggested.
 

Time to wear a mask again?

A properly fitted N95 mask will be the best approach to lessen exposure to smoke from wildfires, “but by itself cannot eliminate all of the risk,” Dr. Glatter said. Surgical masks can add minimal protection, and cloth masks will not provide any significant protection against the damaging effects of smoke from wildfires.

KN95 masks tend to be more comfortable to wear than N95s. But leakage often occurs that can make this type of protection less effective, Dr. Glatter said.

“Masks are important if you need to go outdoors,” Dr. McCormack said. Also, if you’re traveling by car, set the air conditioning system to recirculate to filter the air inside the vehicle, she recommended.
 

What does that number mean?

The federal government monitors air quality nationwide. In case you’re unfamiliar, the U.S. Air Quality Index includes a color-coded scale for ozone levels and particle pollution, the main concern from wildfire smoke. The lowest risk is the Green or satisfactory air quality category, where air pollution poses little or no risk, with an Index number from 0 to 50.

The index gets progressively more serious, from Yellow for moderate risk (51-100) up to a Maroon category, a hazardous range of 300 or higher on the index. When a Maroon advisory is issued, it means an emergency health warning where “everyone is more likely to be affected.”

How do you know if your outside air is polluted? Your local Air Quality Index (AQI) from the EPA can help. It’s a scale of 0 to 500, and the greater the number, the more harmful pollution in the air. It has six levels: good, moderate, unhealthy for sensitive groups, unhealthy, very unhealthy, and hazardous. You can find it at AirNow.gov.

New York is under an air quality alert until midnight Friday with a current “unhealthy” Index report of 200. The city recorded its worst-ever air quality on Wednesday. The New York State Department of Environmental Conservation warns that fine particulate levels – small particles that can enter a person’s lungs – are the biggest concern.

AirNow.gov warns that western New England down to Washington has air quality in the three worst categories – ranging from unhealthy to very unhealthy and hazardous. The ten worst locations on the U.S. Air Quality Index as of 10 a.m. ET on June 8 include the Wilmington, Del., area with an Index of 241, or “very unhealthy.”

• 244: Suburban Washington/Maryland.
• 252: Southern coastal New Jersey.
• 252: Kent County, Del.
• 270: Philadelphia.
• 291: Greater New Castle County, Del.
• 293: Northern Virginia.
• 293: Metropolitan Washington.

These two locations are in the “hazardous” or health emergency warning category:

• 309: Lehigh Valley, Pa.
• 399: Susquehanna Valley, Pa.

To check an air quality advisory in your area, enter your ZIP code at AirNow.gov.

A version of this article first appeared on WebMD.com.

While millions of Americans in the Midwest and on the Eastern Seaboard got some relief from the wildfire smoke from Canada, with more relief expected over the weekend, health experts warned that for at-risk people, some hazardous health effects may persist. 

People with moderate to severe asthma, chronic obstructive pulmonary disease, and other risk factors are used to checking air quality warnings before heading outside. But this situation is anything but typical.

Even people not normally at risk can have burning eyes, a runny nose, and a hard time breathing. These are among the symptoms to watch for as health effects of wildfire smoke. Special considerations should be made for people with heart disease, lung disease, and other conditions that put them at increased risk. Those affected can also have trouble sleeping, anxiety, and ongoing mental health issues.

The smoke will stick around the next few days, possibly clearing out early next week when the winds change direction, Weather Channel meteorologist Ari Sarsalari predicted June 8. But that doesn’t mean any physical or mental health effects will clear up as quickly.

“We are seeing dramatic increases in air pollution, and we are seeing increases in patients coming to the ED and the hospital. We expect that this will increase in the days ahead,” said Meredith McCormack, MD, MHS, a volunteer medical spokesperson for the American Lung Association.

“The air quality in our area – Baltimore – and other surrounding areas is not healthy for anyone,” said Dr. McCormack, who specializes in pulmonary and critical care medicine at Johns Hopkins University, Baltimore.
 

How serious are the health warnings?

Residents of California might be more familiar with the hazards of wildfire smoke, but this is a novel experience for many people along the East Coast. Air quality advisories are popping up on cellphones for people living in Boston, New York, and as far south as Northern Virginia. What should the estimated 75 million to 128 million affected Americans do? 

We asked experts to weigh in on when it’s safe or not safe to spend time outside, when to seek medical help, and the best ways for people to protect themselves.

“It’s important to stay indoors and close all windows to reduce exposure to smoke from wildfires. It’s also essential to stay away from any windows that may not have a good seal, in order to minimize any potential exposure to smoke,” said Robert Glatter, MD, editor at large for Medscape Emergency Medicine and an emergency medicine doctor at Lenox Hill Hospital/Northwell Health in New York.

Dr. Glatter noted that placing moist towels under doors and sealing leaking windows can help. 

Monitor your symptoms, and contact your doctor or go to urgent care, Dr. McCormack advised, if you see any increase in concerning symptoms. These include shortness of breath, coughing, chest tightness, or wheezing. Also make sure you take recommended medications and have enough on hand, she said.
 

Fine particles, big concerns

The weather is warming in many parts of the country, and that can mean air conditioning. Adding a MERV 13 filter to a central air conditioning system could reduce exposure to wildfire smoke. Using a portable indoor air purifier with a HEPA filter also can help people without central air conditioning. The filter can help remove small particles in the air but must be replaced regularly.

Smoke from wildfires contains multiple toxins, including heavy metals, carcinogens, and fine particulate matter (PM) under 2.5 microns. Dr. Glatter explained that these particles are about 100 times thinner than a human hair. Because of their size, they can embed deeper into the airways in the lungs and trigger chronic inflammation.

“This has also been linked to increased rates of lung cancer and brain tumors,” he said, based on a 2022 study in Canada.

The effects of smoke from wildfires can continue for many years. After the 2014 Hazelwood coal mine fire, emergency department visits for respiratory conditions and cardiovascular complaints remained higher for up to 2-5 years later, Dr. Glatter said. Again, large quantities of fine particulate matter in the smoke, less than 2.5 microns (PM 2.5), was to blame.

Exposure to smoke from wildfires during pregnancy has also been linked to abnormal fetal growth, preterm birth, as well as low birth weight, a January 2023 preprint on MedRxiv suggested.
 

Time to wear a mask again?

A properly fitted N95 mask will be the best approach to lessen exposure to smoke from wildfires, “but by itself cannot eliminate all of the risk,” Dr. Glatter said. Surgical masks can add minimal protection, and cloth masks will not provide any significant protection against the damaging effects of smoke from wildfires.

KN95 masks tend to be more comfortable to wear than N95s. But leakage often occurs that can make this type of protection less effective, Dr. Glatter said.

“Masks are important if you need to go outdoors,” Dr. McCormack said. Also, if you’re traveling by car, set the air conditioning system to recirculate to filter the air inside the vehicle, she recommended.
 

What does that number mean?

The federal government monitors air quality nationwide. In case you’re unfamiliar, the U.S. Air Quality Index includes a color-coded scale for ozone levels and particle pollution, the main concern from wildfire smoke. The lowest risk is the Green or satisfactory air quality category, where air pollution poses little or no risk, with an Index number from 0 to 50.

The index gets progressively more serious, from Yellow for moderate risk (51-100) up to a Maroon category, a hazardous range of 300 or higher on the index. When a Maroon advisory is issued, it means an emergency health warning where “everyone is more likely to be affected.”

How do you know if your outside air is polluted? Your local Air Quality Index (AQI) from the EPA can help. It’s a scale of 0 to 500, and the greater the number, the more harmful pollution in the air. It has six levels: good, moderate, unhealthy for sensitive groups, unhealthy, very unhealthy, and hazardous. You can find it at AirNow.gov.

New York is under an air quality alert until midnight Friday with a current “unhealthy” Index report of 200. The city recorded its worst-ever air quality on Wednesday. The New York State Department of Environmental Conservation warns that fine particulate levels – small particles that can enter a person’s lungs – are the biggest concern.

AirNow.gov warns that western New England down to Washington has air quality in the three worst categories – ranging from unhealthy to very unhealthy and hazardous. The ten worst locations on the U.S. Air Quality Index as of 10 a.m. ET on June 8 include the Wilmington, Del., area with an Index of 241, or “very unhealthy.”

• 244: Suburban Washington/Maryland.
• 252: Southern coastal New Jersey.
• 252: Kent County, Del.
• 270: Philadelphia.
• 291: Greater New Castle County, Del.
• 293: Northern Virginia.
• 293: Metropolitan Washington.

These two locations are in the “hazardous” or health emergency warning category:

• 309: Lehigh Valley, Pa.
• 399: Susquehanna Valley, Pa.

To check an air quality advisory in your area, enter your ZIP code at AirNow.gov.

A version of this article first appeared on WebMD.com.

It sounds like a simple solution to a complicated problem: Find out what kind of obesity someone has based on a one-time genetic saliva test. Then patients and their doctor can get a better idea if antiobesity drugs or other treatments are more likely to work for them.

The goal of creating the obesity types and test is to increase chances of losing weight and improving health and well-being versus a one-strategy-fits-all approach. It’s what Mayo Clinic researchers had in mind when they created four phenotypes of obesity. 

Obesity experts not affiliated with the research have some concerns and say independent studies are needed to verify the potential of this strategy.

This research could help predict who will respond best to popular antiobesity medications, said Andres Acosta, MD, PhD, cofounder of Phenomix Sciences, the company behind the tests. These medications include glucagonlike peptide–1 (GLP-1) receptor agonists like liraglutide (Saxenda, Victoza) and semaglutide (Ozempic, Wegovy).

“We know that not everyone on a GLP-1 will respond. In reality, about a third of the patients don’t do well with GLP-1s,” said Dr. Acosta, an assistant professor of medicine and researcher in the division of gastroenterology and hepatology at the Mayo Clinic in Rochester, Minn. 

Furthest along in development is the “My Phenome Hungry Gut” test for predicting GLP-1 response. People in this Hungry Gut group tend to empty their stomach after a meal faster and are more likely to feel hungry again a short time later, as explained on the company’s website. 

A pilot study to test how well it works started in April at three primary care practices. Plans are to expand real-world testing for this and other obesity types later in 2023. 

The other obesity categories are:

• “Hungry brain,” where the brain does not recognize signals that the stomach is full
• “Emotional hunger,” where cravings to eat are driven by emotions, anxiety, and negative feelings
• “Slow burn,” where people have a slow metabolism and low energy level

People in these categories might be more likely to benefit from other obesity management strategies, like changes to their diet or placement of an intragastric balloon.
 

Some things to consider

While applauding their efforts to be more precise in treating people with obesity, not all experts are convinced this saliva test will be the answer. The company’s research might look promising, but verification of results is warranted. 

University of Texas Southwestern Medical Center

“Can we get better outcomes with things like this? Well, that’s the hope,” said Jaime Almandoz, MD, medical director of weight wellness at the University of Texas Southwestern Medical Center, Dallas.

“We still don’t have randomized trials where we’re looking at obesity phenotyping yet,” said Dr. Almandoz, who is also a spokesperson for the Obesity Society, a professional group of clinicians, researchers, educators, and others focused on obesity science, treatment, and prevention.

There is always concern when a diagnostic test is being developed for commercial use, said Daniel Bessesen, MD, a professor of medicine–endocrinology, metabolism, and diabetes at the University of Colorado at Denver, Aurora. “What they’re talking about doing is super important. But this is a company. This is a company that is, I think, selling a product.”

In an online search, Dr. Bessesen did not find any external studies that showed how well the saliva testing worked. But referring to work by Dr. Acosta and Michael Camilleri, MD, the other cofounder of Phenomix, he said, “I found some papers that they did that I hadn’t read before that are good.”

“These guys are smart guys. And they’ve done a lot of work on [the movement of food through the gut] and how that correlates with obesity and response to some therapies,” said Dr. Bessesen, who is also a spokesperson for the Obesity Society. “So their scientific work does line up with this area.”

Validation of any research is important because the obesity industry has been known for a lot of lose-weight-quick strategies, some with little or no science behind them, he said. 

It is also essential, he said, because “anytime you do something commercial in the area of obesity, you have to acknowledge that people with obesity are a vulnerable population. These people face stigma and bias all the time.”
 

Removing the stigma

If knowing your obesity type ends up making a difference, it could change the conversation people have with their medical provider, Dr. Acosta said. It could also help remove some of the stigma around obesity.

“We’re going to change the conversation because now we can say: ‘Hey, you have obesity because you have ‘Hungry Gut’ phenotype. And because of that, you’re going to respond to this medication,” Dr. Acosta said. The phenotyping suggests a strong genetic tendency – a biologic basis for obesity. 

“So it’s not only a way of taking the blame out, but it’s also way of explaining that there’s a reason why you have obesity,” Dr. Acosta said. It tells people: “You’re not a failure.”
 

More cost-effective treatment?

Targeting obesity treatment could also save on overall health care costs, Dr. Almandoz said. He estimated a cost of $1,400 per month “for forever and ever semaglutide” or at least $1,400 a month for a 3-month trial to see if this medication works in a particular person with obesity.

“That’s a lot of money when you extrapolate that out over the number of people who probably meet the criteria for treatment,” he said. A total 42% of Americans meet the Centers for Disease Control and Prevention definition for obesity.

“You can imagine the potential cost if we were to provide antiobesity therapies to everybody and we were to use what is the most effective class of medication, which is more than a thousand dollars per month, indefinitely,” Dr. Almandoz said. “Not that we should not treat everybody. That’s not the message I’m saying. But if we’re looking at yield or value in terms of treating obesity in a setting with limited resources, it may be best to start with who is most likely to benefit.” 
 

How they created four obesity types

Starting in 2015, Dr. Acosta and colleagues started comparing tests in people with normal weight versus obesity. They used artificial intelligence and machine learning to classify obesity into 11 types at first. They realized this many obesity types were not practical for doctors and people with obesity, so they combined them into four phenotypes. 

“The AI machine learning was followed by, as I like to call, HI, or human intelligence,” he said. 

The saliva test checks for about 6,000 relevant genetic single-nucleotide polymorphisms. Six thousand genetic changes may sound like a large number to check; however, the average individual carries 5 million and 6 million SNPs in their DNA. 

The results are translated to a score that yields a low risk or high risk for Hungry Gut or other types of obesity. “You can have all six thousand genetic mutations, or you can have zero,” Dr. Acosta said.
 

Moving forward

After the soft launch of Hungry Gut testing in April, Phenomix plans to continue studying their saliva test on other obesity types.  

Dr. Acosta is not aware of any direct competitors to Phenomix, although that could change. “I think we’re the only diagnostic company in the space right now. But if it’s really a $14.8 billion market, we’re going to see a lot of diagnostic companies trying to do what we’re doing – if we’re successful,” he said. 

An October 2022 report from Polaris Market Research estimates that the global market for obesity treatment – medications, surgery, and all others – was about $14 billion in 2021. The same report predicts the market will grow to $32 billion by 2030. 

A version of this article first appeared on WebMD.com.

It sounds like a simple solution to a complicated problem: Find out what kind of obesity someone has based on a one-time genetic saliva test. Then patients and their doctor can get a better idea if antiobesity drugs or other treatments are more likely to work for them.

The goal of creating the obesity types and test is to increase chances of losing weight and improving health and well-being versus a one-strategy-fits-all approach. It’s what Mayo Clinic researchers had in mind when they created four phenotypes of obesity. 

Obesity experts not affiliated with the research have some concerns and say independent studies are needed to verify the potential of this strategy.

This research could help predict who will respond best to popular antiobesity medications, said Andres Acosta, MD, PhD, cofounder of Phenomix Sciences, the company behind the tests. These medications include glucagonlike peptide–1 (GLP-1) receptor agonists like liraglutide (Saxenda, Victoza) and semaglutide (Ozempic, Wegovy).

“We know that not everyone on a GLP-1 will respond. In reality, about a third of the patients don’t do well with GLP-1s,” said Dr. Acosta, an assistant professor of medicine and researcher in the division of gastroenterology and hepatology at the Mayo Clinic in Rochester, Minn. 

Furthest along in development is the “My Phenome Hungry Gut” test for predicting GLP-1 response. People in this Hungry Gut group tend to empty their stomach after a meal faster and are more likely to feel hungry again a short time later, as explained on the company’s website. 

A pilot study to test how well it works started in April at three primary care practices. Plans are to expand real-world testing for this and other obesity types later in 2023. 

The other obesity categories are:

• “Hungry brain,” where the brain does not recognize signals that the stomach is full
• “Emotional hunger,” where cravings to eat are driven by emotions, anxiety, and negative feelings
• “Slow burn,” where people have a slow metabolism and low energy level

People in these categories might be more likely to benefit from other obesity management strategies, like changes to their diet or placement of an intragastric balloon.
 

Some things to consider

While applauding their efforts to be more precise in treating people with obesity, not all experts are convinced this saliva test will be the answer. The company’s research might look promising, but verification of results is warranted. 

University of Texas Southwestern Medical Center

“Can we get better outcomes with things like this? Well, that’s the hope,” said Jaime Almandoz, MD, medical director of weight wellness at the University of Texas Southwestern Medical Center, Dallas.

“We still don’t have randomized trials where we’re looking at obesity phenotyping yet,” said Dr. Almandoz, who is also a spokesperson for the Obesity Society, a professional group of clinicians, researchers, educators, and others focused on obesity science, treatment, and prevention.

There is always concern when a diagnostic test is being developed for commercial use, said Daniel Bessesen, MD, a professor of medicine–endocrinology, metabolism, and diabetes at the University of Colorado at Denver, Aurora. “What they’re talking about doing is super important. But this is a company. This is a company that is, I think, selling a product.”

In an online search, Dr. Bessesen did not find any external studies that showed how well the saliva testing worked. But referring to work by Dr. Acosta and Michael Camilleri, MD, the other cofounder of Phenomix, he said, “I found some papers that they did that I hadn’t read before that are good.”

“These guys are smart guys. And they’ve done a lot of work on [the movement of food through the gut] and how that correlates with obesity and response to some therapies,” said Dr. Bessesen, who is also a spokesperson for the Obesity Society. “So their scientific work does line up with this area.”

Validation of any research is important because the obesity industry has been known for a lot of lose-weight-quick strategies, some with little or no science behind them, he said. 

It is also essential, he said, because “anytime you do something commercial in the area of obesity, you have to acknowledge that people with obesity are a vulnerable population. These people face stigma and bias all the time.”
 

Removing the stigma

If knowing your obesity type ends up making a difference, it could change the conversation people have with their medical provider, Dr. Acosta said. It could also help remove some of the stigma around obesity.

“We’re going to change the conversation because now we can say: ‘Hey, you have obesity because you have ‘Hungry Gut’ phenotype. And because of that, you’re going to respond to this medication,” Dr. Acosta said. The phenotyping suggests a strong genetic tendency – a biologic basis for obesity. 

“So it’s not only a way of taking the blame out, but it’s also way of explaining that there’s a reason why you have obesity,” Dr. Acosta said. It tells people: “You’re not a failure.”
 

More cost-effective treatment?

Targeting obesity treatment could also save on overall health care costs, Dr. Almandoz said. He estimated a cost of $1,400 per month “for forever and ever semaglutide” or at least $1,400 a month for a 3-month trial to see if this medication works in a particular person with obesity.

“That’s a lot of money when you extrapolate that out over the number of people who probably meet the criteria for treatment,” he said. A total 42% of Americans meet the Centers for Disease Control and Prevention definition for obesity.

“You can imagine the potential cost if we were to provide antiobesity therapies to everybody and we were to use what is the most effective class of medication, which is more than a thousand dollars per month, indefinitely,” Dr. Almandoz said. “Not that we should not treat everybody. That’s not the message I’m saying. But if we’re looking at yield or value in terms of treating obesity in a setting with limited resources, it may be best to start with who is most likely to benefit.” 
 

How they created four obesity types

Starting in 2015, Dr. Acosta and colleagues started comparing tests in people with normal weight versus obesity. They used artificial intelligence and machine learning to classify obesity into 11 types at first. They realized this many obesity types were not practical for doctors and people with obesity, so they combined them into four phenotypes. 

“The AI machine learning was followed by, as I like to call, HI, or human intelligence,” he said. 

The saliva test checks for about 6,000 relevant genetic single-nucleotide polymorphisms. Six thousand genetic changes may sound like a large number to check; however, the average individual carries 5 million and 6 million SNPs in their DNA. 

The results are translated to a score that yields a low risk or high risk for Hungry Gut or other types of obesity. “You can have all six thousand genetic mutations, or you can have zero,” Dr. Acosta said.
 

Moving forward

After the soft launch of Hungry Gut testing in April, Phenomix plans to continue studying their saliva test on other obesity types.  

Dr. Acosta is not aware of any direct competitors to Phenomix, although that could change. “I think we’re the only diagnostic company in the space right now. But if it’s really a $14.8 billion market, we’re going to see a lot of diagnostic companies trying to do what we’re doing – if we’re successful,” he said. 

An October 2022 report from Polaris Market Research estimates that the global market for obesity treatment – medications, surgery, and all others – was about $14 billion in 2021. The same report predicts the market will grow to $32 billion by 2030. 

A version of this article first appeared on WebMD.com.

It sounds like a simple solution to a complicated problem: Find out what kind of obesity someone has based on a one-time genetic saliva test. Then patients and their doctor can get a better idea if antiobesity drugs or other treatments are more likely to work for them.

The goal of creating the obesity types and test is to increase chances of losing weight and improving health and well-being versus a one-strategy-fits-all approach. It’s what Mayo Clinic researchers had in mind when they created four phenotypes of obesity. 

Obesity experts not affiliated with the research have some concerns and say independent studies are needed to verify the potential of this strategy.

This research could help predict who will respond best to popular antiobesity medications, said Andres Acosta, MD, PhD, cofounder of Phenomix Sciences, the company behind the tests. These medications include glucagonlike peptide–1 (GLP-1) receptor agonists like liraglutide (Saxenda, Victoza) and semaglutide (Ozempic, Wegovy).

“We know that not everyone on a GLP-1 will respond. In reality, about a third of the patients don’t do well with GLP-1s,” said Dr. Acosta, an assistant professor of medicine and researcher in the division of gastroenterology and hepatology at the Mayo Clinic in Rochester, Minn. 

Furthest along in development is the “My Phenome Hungry Gut” test for predicting GLP-1 response. People in this Hungry Gut group tend to empty their stomach after a meal faster and are more likely to feel hungry again a short time later, as explained on the company’s website. 

A pilot study to test how well it works started in April at three primary care practices. Plans are to expand real-world testing for this and other obesity types later in 2023. 

The other obesity categories are:

• “Hungry brain,” where the brain does not recognize signals that the stomach is full
• “Emotional hunger,” where cravings to eat are driven by emotions, anxiety, and negative feelings
• “Slow burn,” where people have a slow metabolism and low energy level

People in these categories might be more likely to benefit from other obesity management strategies, like changes to their diet or placement of an intragastric balloon.
 

Some things to consider

While applauding their efforts to be more precise in treating people with obesity, not all experts are convinced this saliva test will be the answer. The company’s research might look promising, but verification of results is warranted. 

University of Texas Southwestern Medical Center

“Can we get better outcomes with things like this? Well, that’s the hope,” said Jaime Almandoz, MD, medical director of weight wellness at the University of Texas Southwestern Medical Center, Dallas.

“We still don’t have randomized trials where we’re looking at obesity phenotyping yet,” said Dr. Almandoz, who is also a spokesperson for the Obesity Society, a professional group of clinicians, researchers, educators, and others focused on obesity science, treatment, and prevention.

There is always concern when a diagnostic test is being developed for commercial use, said Daniel Bessesen, MD, a professor of medicine–endocrinology, metabolism, and diabetes at the University of Colorado at Denver, Aurora. “What they’re talking about doing is super important. But this is a company. This is a company that is, I think, selling a product.”

In an online search, Dr. Bessesen did not find any external studies that showed how well the saliva testing worked. But referring to work by Dr. Acosta and Michael Camilleri, MD, the other cofounder of Phenomix, he said, “I found some papers that they did that I hadn’t read before that are good.”

“These guys are smart guys. And they’ve done a lot of work on [the movement of food through the gut] and how that correlates with obesity and response to some therapies,” said Dr. Bessesen, who is also a spokesperson for the Obesity Society. “So their scientific work does line up with this area.”

Validation of any research is important because the obesity industry has been known for a lot of lose-weight-quick strategies, some with little or no science behind them, he said. 

It is also essential, he said, because “anytime you do something commercial in the area of obesity, you have to acknowledge that people with obesity are a vulnerable population. These people face stigma and bias all the time.”
 

Removing the stigma

If knowing your obesity type ends up making a difference, it could change the conversation people have with their medical provider, Dr. Acosta said. It could also help remove some of the stigma around obesity.

“We’re going to change the conversation because now we can say: ‘Hey, you have obesity because you have ‘Hungry Gut’ phenotype. And because of that, you’re going to respond to this medication,” Dr. Acosta said. The phenotyping suggests a strong genetic tendency – a biologic basis for obesity. 

“So it’s not only a way of taking the blame out, but it’s also way of explaining that there’s a reason why you have obesity,” Dr. Acosta said. It tells people: “You’re not a failure.”
 

More cost-effective treatment?

Targeting obesity treatment could also save on overall health care costs, Dr. Almandoz said. He estimated a cost of $1,400 per month “for forever and ever semaglutide” or at least $1,400 a month for a 3-month trial to see if this medication works in a particular person with obesity.

“That’s a lot of money when you extrapolate that out over the number of people who probably meet the criteria for treatment,” he said. A total 42% of Americans meet the Centers for Disease Control and Prevention definition for obesity.

“You can imagine the potential cost if we were to provide antiobesity therapies to everybody and we were to use what is the most effective class of medication, which is more than a thousand dollars per month, indefinitely,” Dr. Almandoz said. “Not that we should not treat everybody. That’s not the message I’m saying. But if we’re looking at yield or value in terms of treating obesity in a setting with limited resources, it may be best to start with who is most likely to benefit.” 
 

How they created four obesity types

Starting in 2015, Dr. Acosta and colleagues started comparing tests in people with normal weight versus obesity. They used artificial intelligence and machine learning to classify obesity into 11 types at first. They realized this many obesity types were not practical for doctors and people with obesity, so they combined them into four phenotypes. 

“The AI machine learning was followed by, as I like to call, HI, or human intelligence,” he said. 

The saliva test checks for about 6,000 relevant genetic single-nucleotide polymorphisms. Six thousand genetic changes may sound like a large number to check; however, the average individual carries 5 million and 6 million SNPs in their DNA. 

The results are translated to a score that yields a low risk or high risk for Hungry Gut or other types of obesity. “You can have all six thousand genetic mutations, or you can have zero,” Dr. Acosta said.
 

Moving forward

After the soft launch of Hungry Gut testing in April, Phenomix plans to continue studying their saliva test on other obesity types.  

Dr. Acosta is not aware of any direct competitors to Phenomix, although that could change. “I think we’re the only diagnostic company in the space right now. But if it’s really a $14.8 billion market, we’re going to see a lot of diagnostic companies trying to do what we’re doing – if we’re successful,” he said. 

An October 2022 report from Polaris Market Research estimates that the global market for obesity treatment – medications, surgery, and all others – was about $14 billion in 2021. The same report predicts the market will grow to $32 billion by 2030. 

A version of this article first appeared on WebMD.com.

CHICAGO – The standard approaches to measuring flares in people with Crohn’s disease have some limitations, including an inability to signal a change in disease activity without laboratory testing or before symptoms arise.

A new device developed at Massachusetts Institute of Technology could change all that.

Using data collected via a passive at-home monitoring device (Emerald sensor, Emerald Innovations Inc.), researchers found that increases in breathing rate, more awakenings at night, and slower walking speed accurately predicted that a person’s Crohn’s disease activity was about to flare, according to a study presented May 7 at Digestive Disease Week^® (DDW) 2023.

In some cases, the prediction of a flare came up to 25 days sooner than via traditional measures.

“In order to provide optimal care, providers need to monitor patients closely with regard to accurate active disease.” said Joshua Korzenik, MD, a gastroenterologist at Brigham and Women’s Hospital and assistant professor of medicine at Harvard Medical School in Boston. “The problem is the clinical symptoms are not accurate.”
 

Tracking flares with technology

Traditionally, measuring flares in Crohn’s disease activity depends on imaging, colonoscopy, and/or laboratory measures of calprotectin or other biomarkers. These approaches can be costly, can involve delays, and can carry risks, Dr. Korzenik said.

“They are also a single snapshot in time,” he added.

To determine how well a noninvasive device could perform, investigators enrolled 120 people with 105 continuing in the study long enough to be evaluable; 44 people whose Crohn’s disease was in remission, 35 with active Crohn’s disease, as well as 26 healthy controls. Among those with Crohn’s disease, 83% were on biologic therapy.

The groups were matched for age and gender, with a mean age of 47 years and mean disease duration of 13 years.

People with certain medical conditions were excluded, as was anyone who owned a large dog that sometimes slept in bed with them because that might throw off the readings.

The participants put the device – which resembles a closed laptop or a large Wi-Fi router – in their homes and were monitored for a mean 306 days. Participants wore an ankle bracelet the first 2 weeks of the study so the device could learn to distinguish them from others in the home.

The device sent out radio waves with frequencies like Wi-Fi for researchers to measure the factors that may be associated with flares, such as sleep quality and cycles, breathing rate, and gait speed.

Traditional clinical measures based on blood and stool samples, along with patient-reported outcome surveys, were taken to compare with the accuracy of the device.

Data from the device were collected and transmitted securely to a cloud database without any interaction from the participant. Data included information on more than 25,000 nights of sleep, 200,000 hours of breathing signals, and 400,000 measurements of walking speed.

Sleep quality and cycles were straightforward, as was breathing rate. But gait speed was a little more complicated to measure. To illustrate, Dr. Korzenik showed the layout of an example apartment with data on how someone moved around. To distill the data, the researchers focused on one path in the home, relatively straight and not obstructed by furniture, and limited the measurements to a certain amount of time. People who spent more time at home during the COVID-19 pandemic did not skew the results, according to Dr. Korzenik, who added that it wasn’t total time walking around but a snippet in time.

A variety of sleep, breathing, and mobility metrics extracted by the device were integrated to assess disease activity. Investigators noted that during flares, sleep quality decreased, and more nocturnal awakenings occurred. They also found that gait speed slowed, and respiratory rate increased with flares.

When the investigators looked at sleep as a function of disease activity in the patient-reported surveys, they found a significant difference between people in remission and those with active disease. For example, people with active disease had a greater number of awakenings at night (P = .0016), less REM sleep at night (P = .0000), and less time in deep sleep (P = .000) compared with those in remission.

The technology “can identify flares with a predictive value that approaches fecal calprotectin,” Dr. Korzenik said.

Machine learning was used to look at severity of disease vs. fecal calprotectin values and “showed the data could be used as a marker of disease,” he added.

Use of a remote monitor, the comparison of validated vs. conventional data, and the large dataset were among the strengths of the study. The single-center design and exclusion of people with some comorbidities are potential limitations.

Further studies are warranted to confirm these findings and guide optimal care of people with Crohn’s disease, the investigators noted.
 

Earlier detection, earlier intervention

“The study is really important,” said session comoderator Raymond K. Cross Jr., MD, professor of medicine and director of the IBD program at the University of Maryland, Baltimore.

Monitoring devices like this “could be very useful,” Dr. Cross said. “It is not invasive, unless you consider a device in your house invasive. But, to me, I don’t think a box in my bedroom would be unnerving to me.”

Dr. Cross shared a couple of caveats. “The one devil in the details is always going to be cost,” he said. Also, it’s unclear who will read and interpret all the data generated by the device among “providers who are already overwhelmed with the volume of information.”

Moving forward, a device like this could offer multiple uses, Dr. Cross noted. If the device can detect relapses earlier, physicians could intervene sooner, he said. Also, the device could potentially flag people who are not taking their medications as recommended, or it could be used as a guide to optimize treatment response.

Whether data from the device could indicate when it’s appropriate to reduce the frequency or dose of medication or even when to withdraw therapy would be “really aspirational,” Dr. Cross added.

The study was funded by The Leona M. and Harry B. Helmsley Charitable Trust. Dr. Korzenik and Dr. Cross report no relevant financial relationships.
 

DDW is sponsored by the American Association for the Study of Liver Diseases (AASLD), the American Gastroenterological Association (AGA), the American Society for Gastrointestinal Endoscopy (ASGE) and The Society for Surgery of the Alimentary Tract (SSAT).

A version of this article first appeared on Medscape.com.

CHICAGO – The standard approaches to measuring flares in people with Crohn’s disease have some limitations, including an inability to signal a change in disease activity without laboratory testing or before symptoms arise.

A new device developed at Massachusetts Institute of Technology could change all that.

Using data collected via a passive at-home monitoring device (Emerald sensor, Emerald Innovations Inc.), researchers found that increases in breathing rate, more awakenings at night, and slower walking speed accurately predicted that a person’s Crohn’s disease activity was about to flare, according to a study presented May 7 at Digestive Disease Week^® (DDW) 2023.

In some cases, the prediction of a flare came up to 25 days sooner than via traditional measures.

“In order to provide optimal care, providers need to monitor patients closely with regard to accurate active disease.” said Joshua Korzenik, MD, a gastroenterologist at Brigham and Women’s Hospital and assistant professor of medicine at Harvard Medical School in Boston. “The problem is the clinical symptoms are not accurate.”
 

Tracking flares with technology

Traditionally, measuring flares in Crohn’s disease activity depends on imaging, colonoscopy, and/or laboratory measures of calprotectin or other biomarkers. These approaches can be costly, can involve delays, and can carry risks, Dr. Korzenik said.

“They are also a single snapshot in time,” he added.

To determine how well a noninvasive device could perform, investigators enrolled 120 people with 105 continuing in the study long enough to be evaluable; 44 people whose Crohn’s disease was in remission, 35 with active Crohn’s disease, as well as 26 healthy controls. Among those with Crohn’s disease, 83% were on biologic therapy.

The groups were matched for age and gender, with a mean age of 47 years and mean disease duration of 13 years.

People with certain medical conditions were excluded, as was anyone who owned a large dog that sometimes slept in bed with them because that might throw off the readings.

The participants put the device – which resembles a closed laptop or a large Wi-Fi router – in their homes and were monitored for a mean 306 days. Participants wore an ankle bracelet the first 2 weeks of the study so the device could learn to distinguish them from others in the home.

The device sent out radio waves with frequencies like Wi-Fi for researchers to measure the factors that may be associated with flares, such as sleep quality and cycles, breathing rate, and gait speed.

Traditional clinical measures based on blood and stool samples, along with patient-reported outcome surveys, were taken to compare with the accuracy of the device.

Data from the device were collected and transmitted securely to a cloud database without any interaction from the participant. Data included information on more than 25,000 nights of sleep, 200,000 hours of breathing signals, and 400,000 measurements of walking speed.

Sleep quality and cycles were straightforward, as was breathing rate. But gait speed was a little more complicated to measure. To illustrate, Dr. Korzenik showed the layout of an example apartment with data on how someone moved around. To distill the data, the researchers focused on one path in the home, relatively straight and not obstructed by furniture, and limited the measurements to a certain amount of time. People who spent more time at home during the COVID-19 pandemic did not skew the results, according to Dr. Korzenik, who added that it wasn’t total time walking around but a snippet in time.

A variety of sleep, breathing, and mobility metrics extracted by the device were integrated to assess disease activity. Investigators noted that during flares, sleep quality decreased, and more nocturnal awakenings occurred. They also found that gait speed slowed, and respiratory rate increased with flares.

When the investigators looked at sleep as a function of disease activity in the patient-reported surveys, they found a significant difference between people in remission and those with active disease. For example, people with active disease had a greater number of awakenings at night (P = .0016), less REM sleep at night (P = .0000), and less time in deep sleep (P = .000) compared with those in remission.

The technology “can identify flares with a predictive value that approaches fecal calprotectin,” Dr. Korzenik said.

Machine learning was used to look at severity of disease vs. fecal calprotectin values and “showed the data could be used as a marker of disease,” he added.

Use of a remote monitor, the comparison of validated vs. conventional data, and the large dataset were among the strengths of the study. The single-center design and exclusion of people with some comorbidities are potential limitations.

Further studies are warranted to confirm these findings and guide optimal care of people with Crohn’s disease, the investigators noted.
 

Earlier detection, earlier intervention

“The study is really important,” said session comoderator Raymond K. Cross Jr., MD, professor of medicine and director of the IBD program at the University of Maryland, Baltimore.

Monitoring devices like this “could be very useful,” Dr. Cross said. “It is not invasive, unless you consider a device in your house invasive. But, to me, I don’t think a box in my bedroom would be unnerving to me.”

Dr. Cross shared a couple of caveats. “The one devil in the details is always going to be cost,” he said. Also, it’s unclear who will read and interpret all the data generated by the device among “providers who are already overwhelmed with the volume of information.”

Moving forward, a device like this could offer multiple uses, Dr. Cross noted. If the device can detect relapses earlier, physicians could intervene sooner, he said. Also, the device could potentially flag people who are not taking their medications as recommended, or it could be used as a guide to optimize treatment response.

Whether data from the device could indicate when it’s appropriate to reduce the frequency or dose of medication or even when to withdraw therapy would be “really aspirational,” Dr. Cross added.

The study was funded by The Leona M. and Harry B. Helmsley Charitable Trust. Dr. Korzenik and Dr. Cross report no relevant financial relationships.
 

DDW is sponsored by the American Association for the Study of Liver Diseases (AASLD), the American Gastroenterological Association (AGA), the American Society for Gastrointestinal Endoscopy (ASGE) and The Society for Surgery of the Alimentary Tract (SSAT).

A version of this article first appeared on Medscape.com.

CHICAGO – The standard approaches to measuring flares in people with Crohn’s disease have some limitations, including an inability to signal a change in disease activity without laboratory testing or before symptoms arise.

A new device developed at Massachusetts Institute of Technology could change all that.

Using data collected via a passive at-home monitoring device (Emerald sensor, Emerald Innovations Inc.), researchers found that increases in breathing rate, more awakenings at night, and slower walking speed accurately predicted that a person’s Crohn’s disease activity was about to flare, according to a study presented May 7 at Digestive Disease Week^® (DDW) 2023.

In some cases, the prediction of a flare came up to 25 days sooner than via traditional measures.

“In order to provide optimal care, providers need to monitor patients closely with regard to accurate active disease.” said Joshua Korzenik, MD, a gastroenterologist at Brigham and Women’s Hospital and assistant professor of medicine at Harvard Medical School in Boston. “The problem is the clinical symptoms are not accurate.”
 

Tracking flares with technology

Traditionally, measuring flares in Crohn’s disease activity depends on imaging, colonoscopy, and/or laboratory measures of calprotectin or other biomarkers. These approaches can be costly, can involve delays, and can carry risks, Dr. Korzenik said.

“They are also a single snapshot in time,” he added.

To determine how well a noninvasive device could perform, investigators enrolled 120 people with 105 continuing in the study long enough to be evaluable; 44 people whose Crohn’s disease was in remission, 35 with active Crohn’s disease, as well as 26 healthy controls. Among those with Crohn’s disease, 83% were on biologic therapy.

The groups were matched for age and gender, with a mean age of 47 years and mean disease duration of 13 years.

People with certain medical conditions were excluded, as was anyone who owned a large dog that sometimes slept in bed with them because that might throw off the readings.

The participants put the device – which resembles a closed laptop or a large Wi-Fi router – in their homes and were monitored for a mean 306 days. Participants wore an ankle bracelet the first 2 weeks of the study so the device could learn to distinguish them from others in the home.

The device sent out radio waves with frequencies like Wi-Fi for researchers to measure the factors that may be associated with flares, such as sleep quality and cycles, breathing rate, and gait speed.

Traditional clinical measures based on blood and stool samples, along with patient-reported outcome surveys, were taken to compare with the accuracy of the device.

Data from the device were collected and transmitted securely to a cloud database without any interaction from the participant. Data included information on more than 25,000 nights of sleep, 200,000 hours of breathing signals, and 400,000 measurements of walking speed.

Sleep quality and cycles were straightforward, as was breathing rate. But gait speed was a little more complicated to measure. To illustrate, Dr. Korzenik showed the layout of an example apartment with data on how someone moved around. To distill the data, the researchers focused on one path in the home, relatively straight and not obstructed by furniture, and limited the measurements to a certain amount of time. People who spent more time at home during the COVID-19 pandemic did not skew the results, according to Dr. Korzenik, who added that it wasn’t total time walking around but a snippet in time.

A variety of sleep, breathing, and mobility metrics extracted by the device were integrated to assess disease activity. Investigators noted that during flares, sleep quality decreased, and more nocturnal awakenings occurred. They also found that gait speed slowed, and respiratory rate increased with flares.

When the investigators looked at sleep as a function of disease activity in the patient-reported surveys, they found a significant difference between people in remission and those with active disease. For example, people with active disease had a greater number of awakenings at night (P = .0016), less REM sleep at night (P = .0000), and less time in deep sleep (P = .000) compared with those in remission.

The technology “can identify flares with a predictive value that approaches fecal calprotectin,” Dr. Korzenik said.

Machine learning was used to look at severity of disease vs. fecal calprotectin values and “showed the data could be used as a marker of disease,” he added.

Use of a remote monitor, the comparison of validated vs. conventional data, and the large dataset were among the strengths of the study. The single-center design and exclusion of people with some comorbidities are potential limitations.

Further studies are warranted to confirm these findings and guide optimal care of people with Crohn’s disease, the investigators noted.
 

Earlier detection, earlier intervention

“The study is really important,” said session comoderator Raymond K. Cross Jr., MD, professor of medicine and director of the IBD program at the University of Maryland, Baltimore.

Monitoring devices like this “could be very useful,” Dr. Cross said. “It is not invasive, unless you consider a device in your house invasive. But, to me, I don’t think a box in my bedroom would be unnerving to me.”

Dr. Cross shared a couple of caveats. “The one devil in the details is always going to be cost,” he said. Also, it’s unclear who will read and interpret all the data generated by the device among “providers who are already overwhelmed with the volume of information.”

Moving forward, a device like this could offer multiple uses, Dr. Cross noted. If the device can detect relapses earlier, physicians could intervene sooner, he said. Also, the device could potentially flag people who are not taking their medications as recommended, or it could be used as a guide to optimize treatment response.

Whether data from the device could indicate when it’s appropriate to reduce the frequency or dose of medication or even when to withdraw therapy would be “really aspirational,” Dr. Cross added.

The study was funded by The Leona M. and Harry B. Helmsley Charitable Trust. Dr. Korzenik and Dr. Cross report no relevant financial relationships.
 

DDW is sponsored by the American Association for the Study of Liver Diseases (AASLD), the American Gastroenterological Association (AGA), the American Society for Gastrointestinal Endoscopy (ASGE) and The Society for Surgery of the Alimentary Tract (SSAT).

A version of this article first appeared on Medscape.com.

CHICAGO – Infliximab was associated with fewer discontinuations for lack of efficacy than vedolizumab during the maintenance phase of ulcerative colitis treatment, an updated meta-analysis of randomized clinical trials reveals.

At 1 year, 2% of people taking the anti–tumor necrosis factor (TNF) agent infliximab discontinued for lack of efficacy, compared with 24% of patients taking vedolizumab (Entyvio), an integrin receptor antagonist.

The safety profile of each agent is also important.

“We know that vedolizumab has less safety risks than an anti-TNF agent, but we also have the gut feeling that the anti-TNF agents are more efficacious,” lead author Marc Ferrante, MD, said in an interview.

“Of course, I don’t think we can really say that vedolizumab is the safest and infliximab is not safe, but there is some difference,” added Dr. Ferrante, a professor in the department of gastroenterology and hepatology, University Hospitals Leuven (Belgium).

The study was presented as a poster at the annual Digestive Disease Week (DDW).

The researchers conducted a pooled analysis of six randomized controlled trials from the past 10 years. They analyzed the NOR-SWITCH IV Q8W, the NCT02883452 SC Q2W, and LIBERTY-UC SC Q2W studies for infliximab, and the VISIBLE 1 SC Q2W, GEMINI 1 IV Q4W, and VARSITY IV Q8W trials for vedolizumab.

Their work expands on a meta-analysis by Dr. Ferrante and colleagues presented at DDW 2022. They added the 1-year results from the phase 3 LIBERTY-UC study to increase the number of participants taking infliximab or an infliximab biosimilar.

“Luckily, the results are very similar,” Dr. Ferrante said, and noted that they support previous findings that discontinuation of infliximab was lower than that of vedolizumab.

Most of the patients in the infliximab group were taking an infliximab biosimilar, whereas the vedolizumab group received the originator. Dr. Ferrante noted that the economic considerations involved in deciding between a biosimilar and an originator were not part of the research but that “there will be a difference in costs.”
 

Same mechanism, different route

The novel finding from the study includes the subcutaneous form of infliximab, which is not yet available in the United States, noted Joshua M. Steinberg, MD, director of inflammatory bowel disease at Gastroenterology of the Rockies, Denver, when asked to comment on the study. Currently, intravenously administered infliximab and vedolizumab are available in the United States.

A better comparator in the future would be looking at subcutaneous forms of both agents, especially “with the impending launch of subcutaneous vedolizumab in the United States,” said Dr. Steinberg, who is also a clinical instructor of medicine at the University of Colorado at Denver, Aurora.

He added that it’s reassuring overall that with a newer mode of administration but same mechanism of action, it is still feasible and durable for at least 1 year.

“The general consensus is that in terms of our biologics, vedolizumab is the safest because of its targeted mechanism of action. But sometimes the ‘safest choice’ isn’t the best choice,” Dr. Steinberg said. “I think in the right patient, the most effective treatment is going to be the one that works the best, and that’s not going to be universal.”

The study was sponsored by Celltrion, which makes an infliximab biosimilar. Dr. Ferrante receives honoraria as a consultant and speaker for Celltrion. Dr. Steinberg reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article first appeared on Medscape.com.

CHICAGO – Infliximab was associated with fewer discontinuations for lack of efficacy than vedolizumab during the maintenance phase of ulcerative colitis treatment, an updated meta-analysis of randomized clinical trials reveals.

At 1 year, 2% of people taking the anti–tumor necrosis factor (TNF) agent infliximab discontinued for lack of efficacy, compared with 24% of patients taking vedolizumab (Entyvio), an integrin receptor antagonist.

The safety profile of each agent is also important.

“We know that vedolizumab has less safety risks than an anti-TNF agent, but we also have the gut feeling that the anti-TNF agents are more efficacious,” lead author Marc Ferrante, MD, said in an interview.

“Of course, I don’t think we can really say that vedolizumab is the safest and infliximab is not safe, but there is some difference,” added Dr. Ferrante, a professor in the department of gastroenterology and hepatology, University Hospitals Leuven (Belgium).

The study was presented as a poster at the annual Digestive Disease Week (DDW).

The researchers conducted a pooled analysis of six randomized controlled trials from the past 10 years. They analyzed the NOR-SWITCH IV Q8W, the NCT02883452 SC Q2W, and LIBERTY-UC SC Q2W studies for infliximab, and the VISIBLE 1 SC Q2W, GEMINI 1 IV Q4W, and VARSITY IV Q8W trials for vedolizumab.

Their work expands on a meta-analysis by Dr. Ferrante and colleagues presented at DDW 2022. They added the 1-year results from the phase 3 LIBERTY-UC study to increase the number of participants taking infliximab or an infliximab biosimilar.

“Luckily, the results are very similar,” Dr. Ferrante said, and noted that they support previous findings that discontinuation of infliximab was lower than that of vedolizumab.

Most of the patients in the infliximab group were taking an infliximab biosimilar, whereas the vedolizumab group received the originator. Dr. Ferrante noted that the economic considerations involved in deciding between a biosimilar and an originator were not part of the research but that “there will be a difference in costs.”
 

Same mechanism, different route

The novel finding from the study includes the subcutaneous form of infliximab, which is not yet available in the United States, noted Joshua M. Steinberg, MD, director of inflammatory bowel disease at Gastroenterology of the Rockies, Denver, when asked to comment on the study. Currently, intravenously administered infliximab and vedolizumab are available in the United States.

A better comparator in the future would be looking at subcutaneous forms of both agents, especially “with the impending launch of subcutaneous vedolizumab in the United States,” said Dr. Steinberg, who is also a clinical instructor of medicine at the University of Colorado at Denver, Aurora.

He added that it’s reassuring overall that with a newer mode of administration but same mechanism of action, it is still feasible and durable for at least 1 year.

“The general consensus is that in terms of our biologics, vedolizumab is the safest because of its targeted mechanism of action. But sometimes the ‘safest choice’ isn’t the best choice,” Dr. Steinberg said. “I think in the right patient, the most effective treatment is going to be the one that works the best, and that’s not going to be universal.”

The study was sponsored by Celltrion, which makes an infliximab biosimilar. Dr. Ferrante receives honoraria as a consultant and speaker for Celltrion. Dr. Steinberg reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article first appeared on Medscape.com.

CHICAGO – Infliximab was associated with fewer discontinuations for lack of efficacy than vedolizumab during the maintenance phase of ulcerative colitis treatment, an updated meta-analysis of randomized clinical trials reveals.

At 1 year, 2% of people taking the anti–tumor necrosis factor (TNF) agent infliximab discontinued for lack of efficacy, compared with 24% of patients taking vedolizumab (Entyvio), an integrin receptor antagonist.

The safety profile of each agent is also important.

“We know that vedolizumab has less safety risks than an anti-TNF agent, but we also have the gut feeling that the anti-TNF agents are more efficacious,” lead author Marc Ferrante, MD, said in an interview.

“Of course, I don’t think we can really say that vedolizumab is the safest and infliximab is not safe, but there is some difference,” added Dr. Ferrante, a professor in the department of gastroenterology and hepatology, University Hospitals Leuven (Belgium).

The study was presented as a poster at the annual Digestive Disease Week (DDW).

The researchers conducted a pooled analysis of six randomized controlled trials from the past 10 years. They analyzed the NOR-SWITCH IV Q8W, the NCT02883452 SC Q2W, and LIBERTY-UC SC Q2W studies for infliximab, and the VISIBLE 1 SC Q2W, GEMINI 1 IV Q4W, and VARSITY IV Q8W trials for vedolizumab.

Their work expands on a meta-analysis by Dr. Ferrante and colleagues presented at DDW 2022. They added the 1-year results from the phase 3 LIBERTY-UC study to increase the number of participants taking infliximab or an infliximab biosimilar.

“Luckily, the results are very similar,” Dr. Ferrante said, and noted that they support previous findings that discontinuation of infliximab was lower than that of vedolizumab.

Most of the patients in the infliximab group were taking an infliximab biosimilar, whereas the vedolizumab group received the originator. Dr. Ferrante noted that the economic considerations involved in deciding between a biosimilar and an originator were not part of the research but that “there will be a difference in costs.”
 

Same mechanism, different route

The novel finding from the study includes the subcutaneous form of infliximab, which is not yet available in the United States, noted Joshua M. Steinberg, MD, director of inflammatory bowel disease at Gastroenterology of the Rockies, Denver, when asked to comment on the study. Currently, intravenously administered infliximab and vedolizumab are available in the United States.

A better comparator in the future would be looking at subcutaneous forms of both agents, especially “with the impending launch of subcutaneous vedolizumab in the United States,” said Dr. Steinberg, who is also a clinical instructor of medicine at the University of Colorado at Denver, Aurora.

He added that it’s reassuring overall that with a newer mode of administration but same mechanism of action, it is still feasible and durable for at least 1 year.

“The general consensus is that in terms of our biologics, vedolizumab is the safest because of its targeted mechanism of action. But sometimes the ‘safest choice’ isn’t the best choice,” Dr. Steinberg said. “I think in the right patient, the most effective treatment is going to be the one that works the best, and that’s not going to be universal.”

The study was sponsored by Celltrion, which makes an infliximab biosimilar. Dr. Ferrante receives honoraria as a consultant and speaker for Celltrion. Dr. Steinberg reported no relevant financial relationships.

DDW is sponsored by the American Association for the Study of Liver Diseases, the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and The Society for Surgery of the Alimentary Tract.

A version of this article first appeared on Medscape.com.

CHICAGO – Antiobesity medications and endoscopic sleeve gastroplasty (ESG) are popular strategies for weight loss on their own. Now researchers are looking at what happens when you combine them.

In a study presented at the annual Digestive Disease Week® (DDW), they found ESG followed by an antiobesity medication led to more total weight loss than ESG alone.

Starting medication within 6 months of ESG was more ideal than other timing intervals. Initiating medical therapy more than 6 months before ESG was associated with less weight loss.

In the single-center, retrospective study, 224 patients were enrolled, of whom 34% were on monotherapy (ESG alone), 31% had combination therapy (medication prescribed within 6 months prior to or after ESG), and 35% had sequential therapy (medication more than 6 months prior to or after ESG).

Most patients were female, ranging from 74% to 95% of each group, and baseline BMI ranged from a mean 37.5 kg/m² to 40.1 kg/m².

The medications involved in the study were phentermine, phentermine/topiramate extended release (Qsymia), orlistat (Xenical, Alli), bupropion/naltrexone ER (Contrave), or the glucagonlike peptide–1 receptor agonist (GLP-1RA) liraglutide (Saxenda, Victoza) or semaglutide (Ozempic, Wegovy, Rybelsus). Of the patients who underwent combination therapy, 30% were prescribed a regimen that included a GLP-1RA. Of the patients who underwent sequential therapy, 81% were prescribed a medication first and 19% underwent ESG first.

At 1 year, the greatest total weight loss was a mean 23.7% with the combination of ESG and a GLP-1RA. Total weight loss was 18% with ESG plus a non–GLP-1RA medication. ESG alone led to 17.3%. Sequential therapy that began with ESG yielded 14.7% total weight loss, whereas sequential therapy that began with medication first resulted in 12% weight loss.

Different study, similar result

In a second study, also presented at DDW 2023, investigators looked at timing of liraglutide for weight loss in a randomized controlled trial. They found that administration of GLP-1RA right after transoral outlet reduction endoscopy (TORe) in people with a history of Roux-en-Y gastric bypass extended weight loss longer than a placebo injection. This strategy was also favorable versus waiting to give liraglutide 1 year later.

The researchers randomly assigned 51 people to get weekly subcutaneous liraglutide injections following TORe for 12 months, then placebo injections for 12 months. They assigned 58 patients to receive weekly placebo injections following TORe for 12 months, then liraglutide injections for 12 months.

At 12 months following the procedure, total body weight loss (TBWL) among participants receiving liraglutide was about 22%, compared with about 14% among patients receiving placebo. At 24 months following the procedure (12 months after crossover), TBWL among patients in the liraglutide-first group was almost 35%, compared with about 24% in the placebo-first/liraglutide-second group.

There was a durable effect associated with liraglutide even after switching to placebo, said Ali Lahooti, lead study author and second-year medical student at Weill Cornell Medicine, New York.

“There did seem to be a better benefit of starting on it for the first year and then stopping it,” Dr. Austin noted.

These two studies come at a time when the debate over the timing of different obesity interventions continues. Some experts believe weight loss medications can help with the rebound in weight that some people experience months after bariatric surgery, for example.
 

‘Wave of the future’

The study by Dr. Jirapinyo and colleagues is “really exciting and interesting,” said Linda S. Lee, MD, medical director of endoscopy, Brigham and Women’s Hospital, Boston, when asked to comment.

Medication begun within 6 months of the endoscopic procedure “led to superior outcomes, compared to just endoscopy alone,” Dr. Lee said. “I think that’s really the wave of the future as far as treating patients with obesity issues. We clearly know that diet and exercise alone for most people is not good enough. Of course, we have surgery, but we also realize that with surgery sometimes the weight starts to creep back up over time.”

Dr. Lee noted that the study was limited because it was retrospective. Ideally, it would be good if future, prospective research randomly assigns people to endoscopy alone or endoscopy plus medication.

Dr. Lee also noted there is a limited number of bariatric endoscopists. By the time people with obesity get to a specialist, they’ve likely tried diet and exercise and “probably have seen all the commercials for these different medications. I think the reality is that most people will ask their primary care physicians about antiobesity medication.

“From my point of view, as long as the medicine is safe and not harming them, then let’s do both of them together,” Dr. Lee added.

Dr. Lee also mentioned another study (Abstract Mo1898) presented at DDW 2023 that showed total weight loss with endoscopic sleeve gastroplasty was durable over 10 years. Follow-up was with only seven patients, however.

Larger numbers are needed to confirm the finding, but it’s “exciting,” she said.

Dr. Jirapinyo receives grant/research support from Apollo Endosurgery, Fractyl, and USGI Medical, and is a consultant for ERBE, GI Dynamics, and Spatz Medical. Dr. Lahooti, Dr. Austin, and Dr. Lee reported no relevant financial relationships.

The meeting is sponsored by the American Gastroenterological Association, the American Association for the Study of Liver Diseases, the American Society for Gastrointestinal Endoscopy, and the Society for Surgery of the Alimentary Tract.

A version of this article first appeared on Medscape.com.

CHICAGO – Antiobesity medications and endoscopic sleeve gastroplasty (ESG) are popular strategies for weight loss on their own. Now researchers are looking at what happens when you combine them.

In a study presented at the annual Digestive Disease Week® (DDW), they found ESG followed by an antiobesity medication led to more total weight loss than ESG alone.

Starting medication within 6 months of ESG was more ideal than other timing intervals. Initiating medical therapy more than 6 months before ESG was associated with less weight loss.

In the single-center, retrospective study, 224 patients were enrolled, of whom 34% were on monotherapy (ESG alone), 31% had combination therapy (medication prescribed within 6 months prior to or after ESG), and 35% had sequential therapy (medication more than 6 months prior to or after ESG).

Most patients were female, ranging from 74% to 95% of each group, and baseline BMI ranged from a mean 37.5 kg/m² to 40.1 kg/m².

The medications involved in the study were phentermine, phentermine/topiramate extended release (Qsymia), orlistat (Xenical, Alli), bupropion/naltrexone ER (Contrave), or the glucagonlike peptide–1 receptor agonist (GLP-1RA) liraglutide (Saxenda, Victoza) or semaglutide (Ozempic, Wegovy, Rybelsus). Of the patients who underwent combination therapy, 30% were prescribed a regimen that included a GLP-1RA. Of the patients who underwent sequential therapy, 81% were prescribed a medication first and 19% underwent ESG first.

At 1 year, the greatest total weight loss was a mean 23.7% with the combination of ESG and a GLP-1RA. Total weight loss was 18% with ESG plus a non–GLP-1RA medication. ESG alone led to 17.3%. Sequential therapy that began with ESG yielded 14.7% total weight loss, whereas sequential therapy that began with medication first resulted in 12% weight loss.

Different study, similar result

In a second study, also presented at DDW 2023, investigators looked at timing of liraglutide for weight loss in a randomized controlled trial. They found that administration of GLP-1RA right after transoral outlet reduction endoscopy (TORe) in people with a history of Roux-en-Y gastric bypass extended weight loss longer than a placebo injection. This strategy was also favorable versus waiting to give liraglutide 1 year later.

The researchers randomly assigned 51 people to get weekly subcutaneous liraglutide injections following TORe for 12 months, then placebo injections for 12 months. They assigned 58 patients to receive weekly placebo injections following TORe for 12 months, then liraglutide injections for 12 months.

At 12 months following the procedure, total body weight loss (TBWL) among participants receiving liraglutide was about 22%, compared with about 14% among patients receiving placebo. At 24 months following the procedure (12 months after crossover), TBWL among patients in the liraglutide-first group was almost 35%, compared with about 24% in the placebo-first/liraglutide-second group.

There was a durable effect associated with liraglutide even after switching to placebo, said Ali Lahooti, lead study author and second-year medical student at Weill Cornell Medicine, New York.

“There did seem to be a better benefit of starting on it for the first year and then stopping it,” Dr. Austin noted.

These two studies come at a time when the debate over the timing of different obesity interventions continues. Some experts believe weight loss medications can help with the rebound in weight that some people experience months after bariatric surgery, for example.
 

‘Wave of the future’

The study by Dr. Jirapinyo and colleagues is “really exciting and interesting,” said Linda S. Lee, MD, medical director of endoscopy, Brigham and Women’s Hospital, Boston, when asked to comment.

Medication begun within 6 months of the endoscopic procedure “led to superior outcomes, compared to just endoscopy alone,” Dr. Lee said. “I think that’s really the wave of the future as far as treating patients with obesity issues. We clearly know that diet and exercise alone for most people is not good enough. Of course, we have surgery, but we also realize that with surgery sometimes the weight starts to creep back up over time.”

Dr. Lee noted that the study was limited because it was retrospective. Ideally, it would be good if future, prospective research randomly assigns people to endoscopy alone or endoscopy plus medication.

Dr. Lee also noted there is a limited number of bariatric endoscopists. By the time people with obesity get to a specialist, they’ve likely tried diet and exercise and “probably have seen all the commercials for these different medications. I think the reality is that most people will ask their primary care physicians about antiobesity medication.

“From my point of view, as long as the medicine is safe and not harming them, then let’s do both of them together,” Dr. Lee added.

Dr. Lee also mentioned another study (Abstract Mo1898) presented at DDW 2023 that showed total weight loss with endoscopic sleeve gastroplasty was durable over 10 years. Follow-up was with only seven patients, however.

Larger numbers are needed to confirm the finding, but it’s “exciting,” she said.

Dr. Jirapinyo receives grant/research support from Apollo Endosurgery, Fractyl, and USGI Medical, and is a consultant for ERBE, GI Dynamics, and Spatz Medical. Dr. Lahooti, Dr. Austin, and Dr. Lee reported no relevant financial relationships.

The meeting is sponsored by the American Gastroenterological Association, the American Association for the Study of Liver Diseases, the American Society for Gastrointestinal Endoscopy, and the Society for Surgery of the Alimentary Tract.

A version of this article first appeared on Medscape.com.

CHICAGO – Antiobesity medications and endoscopic sleeve gastroplasty (ESG) are popular strategies for weight loss on their own. Now researchers are looking at what happens when you combine them.

In a study presented at the annual Digestive Disease Week® (DDW), they found ESG followed by an antiobesity medication led to more total weight loss than ESG alone.

Starting medication within 6 months of ESG was more ideal than other timing intervals. Initiating medical therapy more than 6 months before ESG was associated with less weight loss.

In the single-center, retrospective study, 224 patients were enrolled, of whom 34% were on monotherapy (ESG alone), 31% had combination therapy (medication prescribed within 6 months prior to or after ESG), and 35% had sequential therapy (medication more than 6 months prior to or after ESG).

Most patients were female, ranging from 74% to 95% of each group, and baseline BMI ranged from a mean 37.5 kg/m² to 40.1 kg/m².

The medications involved in the study were phentermine, phentermine/topiramate extended release (Qsymia), orlistat (Xenical, Alli), bupropion/naltrexone ER (Contrave), or the glucagonlike peptide–1 receptor agonist (GLP-1RA) liraglutide (Saxenda, Victoza) or semaglutide (Ozempic, Wegovy, Rybelsus). Of the patients who underwent combination therapy, 30% were prescribed a regimen that included a GLP-1RA. Of the patients who underwent sequential therapy, 81% were prescribed a medication first and 19% underwent ESG first.

At 1 year, the greatest total weight loss was a mean 23.7% with the combination of ESG and a GLP-1RA. Total weight loss was 18% with ESG plus a non–GLP-1RA medication. ESG alone led to 17.3%. Sequential therapy that began with ESG yielded 14.7% total weight loss, whereas sequential therapy that began with medication first resulted in 12% weight loss.

Different study, similar result

In a second study, also presented at DDW 2023, investigators looked at timing of liraglutide for weight loss in a randomized controlled trial. They found that administration of GLP-1RA right after transoral outlet reduction endoscopy (TORe) in people with a history of Roux-en-Y gastric bypass extended weight loss longer than a placebo injection. This strategy was also favorable versus waiting to give liraglutide 1 year later.

The researchers randomly assigned 51 people to get weekly subcutaneous liraglutide injections following TORe for 12 months, then placebo injections for 12 months. They assigned 58 patients to receive weekly placebo injections following TORe for 12 months, then liraglutide injections for 12 months.

At 12 months following the procedure, total body weight loss (TBWL) among participants receiving liraglutide was about 22%, compared with about 14% among patients receiving placebo. At 24 months following the procedure (12 months after crossover), TBWL among patients in the liraglutide-first group was almost 35%, compared with about 24% in the placebo-first/liraglutide-second group.

There was a durable effect associated with liraglutide even after switching to placebo, said Ali Lahooti, lead study author and second-year medical student at Weill Cornell Medicine, New York.

“There did seem to be a better benefit of starting on it for the first year and then stopping it,” Dr. Austin noted.

These two studies come at a time when the debate over the timing of different obesity interventions continues. Some experts believe weight loss medications can help with the rebound in weight that some people experience months after bariatric surgery, for example.
 

‘Wave of the future’

The study by Dr. Jirapinyo and colleagues is “really exciting and interesting,” said Linda S. Lee, MD, medical director of endoscopy, Brigham and Women’s Hospital, Boston, when asked to comment.

Medication begun within 6 months of the endoscopic procedure “led to superior outcomes, compared to just endoscopy alone,” Dr. Lee said. “I think that’s really the wave of the future as far as treating patients with obesity issues. We clearly know that diet and exercise alone for most people is not good enough. Of course, we have surgery, but we also realize that with surgery sometimes the weight starts to creep back up over time.”

Dr. Lee noted that the study was limited because it was retrospective. Ideally, it would be good if future, prospective research randomly assigns people to endoscopy alone or endoscopy plus medication.

Dr. Lee also noted there is a limited number of bariatric endoscopists. By the time people with obesity get to a specialist, they’ve likely tried diet and exercise and “probably have seen all the commercials for these different medications. I think the reality is that most people will ask their primary care physicians about antiobesity medication.

“From my point of view, as long as the medicine is safe and not harming them, then let’s do both of them together,” Dr. Lee added.

Dr. Lee also mentioned another study (Abstract Mo1898) presented at DDW 2023 that showed total weight loss with endoscopic sleeve gastroplasty was durable over 10 years. Follow-up was with only seven patients, however.

Larger numbers are needed to confirm the finding, but it’s “exciting,” she said.

Dr. Jirapinyo receives grant/research support from Apollo Endosurgery, Fractyl, and USGI Medical, and is a consultant for ERBE, GI Dynamics, and Spatz Medical. Dr. Lahooti, Dr. Austin, and Dr. Lee reported no relevant financial relationships.

The meeting is sponsored by the American Gastroenterological Association, the American Association for the Study of Liver Diseases, the American Society for Gastrointestinal Endoscopy, and the Society for Surgery of the Alimentary Tract.

A version of this article first appeared on Medscape.com.

New research could change how experts think about graying hair and what can be done about it. Traditionally, experts thought that undifferentiated stem cells in the hair follicle get called to duty, transform to melanocytes, and then die off.

New evidence points more to a cycle wherein undifferentiated stem cells mature to perform their hair-coloring duties and then transform back to their primitive form. To accomplish this, they need to stay on the move.

When these special stem cells get “stuck” in the follicle, gray hair is the result, according to a new study reported online in Nature.

Curtoicurto/Thinkstock

The regeneration cycle of melanocyte stem cells (McSCs) to melanocytes and back again can last for years. However, McSCs die sooner than do other cells nearby, such as hair follicle stem cells. This difference can explain why people go gray but still grow hair.

“It was thought that melanocyte stem cells are maintained in an undifferentiated state, instead of repeating differentiation and de-differentiation,” said the study’s senior investigator Mayumi Ito, PhD, professor in the departments of dermatology and cell biology at NYU Langone Health, New York.

The process involves different compartments in the hair follicle – the germ area is where the stem cells regenerate; the follicle bulge is where they get stuck. A different microenvironment in each location dictates how they change. This “chameleon-like” property surprised researchers.

Now that investigators figured out how gray hair might get started, a next step will be to search for a way to stop it.

The research has been performed in mice to date but could translate to humans. “Because the structure of the hair follicle is similar between mice and humans, we speculate that human melanocytes may also demonstrate the plasticity during hair regeneration,” Dr. Ito told this news organization.

Future findings could also lead to new therapies. “Our study suggests that moving melanocytes to a proper location within the hair follicle may help prevent gray hair,” Dr. Ito said.

Given the known effects of ultraviolet B (UVB) radiation on melanocytes, Dr. Ito and colleagues wanted to see what effect it might have on this cycle. So in the study, they exposed hair follicles of mice to UVB radiation and report it speeds up the process for McSCs to transform to color-producing melanocytes. They found that these McSCs can regenerate or change back to undifferentiated stem cells, so UVB radiation does not interrupt the process.
 

A melanoma clue?

The study also could have implications for melanoma. Unlike other tumors, melanocytes that cause cancer can self-renew even from a fully differentiated, pigmented form, the researchers note.

This makes melanomas more difficult to eliminate.

“Our study suggests normal melanocytes are very plastic and can reverse a differentiation state. Melanoma cells are known to be very plastic,” Dr. Ito said. “We consider this feature of melanoma may be related to the high plasticity of original melanocytes.”

The finding that melanocyte stem cells “are more plastic than maybe previously given credit for … certainly has implications in melanoma,” agreed Melissa Harris, PhD, associate professor, department of biology at the University of Alabama, Birmingham, when asked to comment on the study.
 

Small technology, big insights?

The advanced technology used by Dr. Ito and colleagues in the study included 3D-intravital imaging and single-cell RNA sequencing to track the stem cells in almost real time as they aged and moved within each hair follicle.

“This paper uses a nice mix of classic and modern techniques to help answer a question that many in the field of pigmentation biology have suspected for a long time. Not all dormant melanocyte stem cells are created equal,” Dr. Harris said.

“The one question not answered in this paper is how to reverse the dysfunction of the melanocyte stem cell ‘stuck’ in the hair bulge,” Dr. Harris added. “There are numerous clinical case studies in humans showing medicine-induced hair repigmentation, and perhaps these cases are examples of dysfunctional melanocyte stem cells becoming ‘unstuck.’ ”
 

‘Very interesting’ findings

The study and its results “are very interesting from a mechanistic perspective and basic science view,” said Anthony M. Rossi, MD, a private practice dermatologist and assistant attending dermatologist at Memorial Sloan Kettering Cancer Center in New York, when asked to comment on the results.

The research provides another view of how melanocyte stem cells can pigment the hair shaft, Dr. Rossi added. “It gives insight into the behavior of stem cells and how they can travel and change state, something not well-known before.”

Dr. Rossi cautioned that other mechanisms are likely taking place. He pointed out that graying of hair can actually occur after a sudden stress event, as well as with vitamin B12 deficiency, thyroid disease, vitiligo-related autoimmune destruction, neurofibromatosis, tuberous sclerosis, and alopecia areata.

The “standout concept” in this paper is that the melanocyte stem cells are stranded and are not getting the right signal from the microenvironment to amplify and appropriately migrate to provide pigment to the hair shaft, said Paradi Mirmirani, MD, a private practice dermatologist in Vallejo, Calif.

It could be challenging to find the right signaling to reverse the graying process, Dr. Mirmirani added. “But the first step is always to understand the underlying basic mechanism. It would be interesting to see if other factors such as smoking, stress … influence the melanocyte stem cells in the same way.”

Grants from the National Institutes of Health and the Department of Defense supported the study. Dr. Ito, Dr. Harris, Dr. Mirmirani, and Dr. Rossi had no relevant disclosures.

A version of this article first appeared on Medscape.com.

New research could change how experts think about graying hair and what can be done about it. Traditionally, experts thought that undifferentiated stem cells in the hair follicle get called to duty, transform to melanocytes, and then die off.

New evidence points more to a cycle wherein undifferentiated stem cells mature to perform their hair-coloring duties and then transform back to their primitive form. To accomplish this, they need to stay on the move.

When these special stem cells get “stuck” in the follicle, gray hair is the result, according to a new study reported online in Nature.

Curtoicurto/Thinkstock

The regeneration cycle of melanocyte stem cells (McSCs) to melanocytes and back again can last for years. However, McSCs die sooner than do other cells nearby, such as hair follicle stem cells. This difference can explain why people go gray but still grow hair.

“It was thought that melanocyte stem cells are maintained in an undifferentiated state, instead of repeating differentiation and de-differentiation,” said the study’s senior investigator Mayumi Ito, PhD, professor in the departments of dermatology and cell biology at NYU Langone Health, New York.

The process involves different compartments in the hair follicle – the germ area is where the stem cells regenerate; the follicle bulge is where they get stuck. A different microenvironment in each location dictates how they change. This “chameleon-like” property surprised researchers.

Now that investigators figured out how gray hair might get started, a next step will be to search for a way to stop it.

The research has been performed in mice to date but could translate to humans. “Because the structure of the hair follicle is similar between mice and humans, we speculate that human melanocytes may also demonstrate the plasticity during hair regeneration,” Dr. Ito told this news organization.

Future findings could also lead to new therapies. “Our study suggests that moving melanocytes to a proper location within the hair follicle may help prevent gray hair,” Dr. Ito said.

Given the known effects of ultraviolet B (UVB) radiation on melanocytes, Dr. Ito and colleagues wanted to see what effect it might have on this cycle. So in the study, they exposed hair follicles of mice to UVB radiation and report it speeds up the process for McSCs to transform to color-producing melanocytes. They found that these McSCs can regenerate or change back to undifferentiated stem cells, so UVB radiation does not interrupt the process.
 

A melanoma clue?

The study also could have implications for melanoma. Unlike other tumors, melanocytes that cause cancer can self-renew even from a fully differentiated, pigmented form, the researchers note.

This makes melanomas more difficult to eliminate.

“Our study suggests normal melanocytes are very plastic and can reverse a differentiation state. Melanoma cells are known to be very plastic,” Dr. Ito said. “We consider this feature of melanoma may be related to the high plasticity of original melanocytes.”

The finding that melanocyte stem cells “are more plastic than maybe previously given credit for … certainly has implications in melanoma,” agreed Melissa Harris, PhD, associate professor, department of biology at the University of Alabama, Birmingham, when asked to comment on the study.
 

Small technology, big insights?

The advanced technology used by Dr. Ito and colleagues in the study included 3D-intravital imaging and single-cell RNA sequencing to track the stem cells in almost real time as they aged and moved within each hair follicle.

“This paper uses a nice mix of classic and modern techniques to help answer a question that many in the field of pigmentation biology have suspected for a long time. Not all dormant melanocyte stem cells are created equal,” Dr. Harris said.

“The one question not answered in this paper is how to reverse the dysfunction of the melanocyte stem cell ‘stuck’ in the hair bulge,” Dr. Harris added. “There are numerous clinical case studies in humans showing medicine-induced hair repigmentation, and perhaps these cases are examples of dysfunctional melanocyte stem cells becoming ‘unstuck.’ ”
 

‘Very interesting’ findings

The study and its results “are very interesting from a mechanistic perspective and basic science view,” said Anthony M. Rossi, MD, a private practice dermatologist and assistant attending dermatologist at Memorial Sloan Kettering Cancer Center in New York, when asked to comment on the results.

The research provides another view of how melanocyte stem cells can pigment the hair shaft, Dr. Rossi added. “It gives insight into the behavior of stem cells and how they can travel and change state, something not well-known before.”

Dr. Rossi cautioned that other mechanisms are likely taking place. He pointed out that graying of hair can actually occur after a sudden stress event, as well as with vitamin B12 deficiency, thyroid disease, vitiligo-related autoimmune destruction, neurofibromatosis, tuberous sclerosis, and alopecia areata.

The “standout concept” in this paper is that the melanocyte stem cells are stranded and are not getting the right signal from the microenvironment to amplify and appropriately migrate to provide pigment to the hair shaft, said Paradi Mirmirani, MD, a private practice dermatologist in Vallejo, Calif.

It could be challenging to find the right signaling to reverse the graying process, Dr. Mirmirani added. “But the first step is always to understand the underlying basic mechanism. It would be interesting to see if other factors such as smoking, stress … influence the melanocyte stem cells in the same way.”

Grants from the National Institutes of Health and the Department of Defense supported the study. Dr. Ito, Dr. Harris, Dr. Mirmirani, and Dr. Rossi had no relevant disclosures.

A version of this article first appeared on Medscape.com.

New research could change how experts think about graying hair and what can be done about it. Traditionally, experts thought that undifferentiated stem cells in the hair follicle get called to duty, transform to melanocytes, and then die off.

New evidence points more to a cycle wherein undifferentiated stem cells mature to perform their hair-coloring duties and then transform back to their primitive form. To accomplish this, they need to stay on the move.

When these special stem cells get “stuck” in the follicle, gray hair is the result, according to a new study reported online in Nature.

Curtoicurto/Thinkstock

The regeneration cycle of melanocyte stem cells (McSCs) to melanocytes and back again can last for years. However, McSCs die sooner than do other cells nearby, such as hair follicle stem cells. This difference can explain why people go gray but still grow hair.

“It was thought that melanocyte stem cells are maintained in an undifferentiated state, instead of repeating differentiation and de-differentiation,” said the study’s senior investigator Mayumi Ito, PhD, professor in the departments of dermatology and cell biology at NYU Langone Health, New York.

The process involves different compartments in the hair follicle – the germ area is where the stem cells regenerate; the follicle bulge is where they get stuck. A different microenvironment in each location dictates how they change. This “chameleon-like” property surprised researchers.

Now that investigators figured out how gray hair might get started, a next step will be to search for a way to stop it.

The research has been performed in mice to date but could translate to humans. “Because the structure of the hair follicle is similar between mice and humans, we speculate that human melanocytes may also demonstrate the plasticity during hair regeneration,” Dr. Ito told this news organization.

Future findings could also lead to new therapies. “Our study suggests that moving melanocytes to a proper location within the hair follicle may help prevent gray hair,” Dr. Ito said.

Given the known effects of ultraviolet B (UVB) radiation on melanocytes, Dr. Ito and colleagues wanted to see what effect it might have on this cycle. So in the study, they exposed hair follicles of mice to UVB radiation and report it speeds up the process for McSCs to transform to color-producing melanocytes. They found that these McSCs can regenerate or change back to undifferentiated stem cells, so UVB radiation does not interrupt the process.
 

A melanoma clue?

The study also could have implications for melanoma. Unlike other tumors, melanocytes that cause cancer can self-renew even from a fully differentiated, pigmented form, the researchers note.

This makes melanomas more difficult to eliminate.

“Our study suggests normal melanocytes are very plastic and can reverse a differentiation state. Melanoma cells are known to be very plastic,” Dr. Ito said. “We consider this feature of melanoma may be related to the high plasticity of original melanocytes.”

The finding that melanocyte stem cells “are more plastic than maybe previously given credit for … certainly has implications in melanoma,” agreed Melissa Harris, PhD, associate professor, department of biology at the University of Alabama, Birmingham, when asked to comment on the study.
 

Small technology, big insights?

The advanced technology used by Dr. Ito and colleagues in the study included 3D-intravital imaging and single-cell RNA sequencing to track the stem cells in almost real time as they aged and moved within each hair follicle.

“This paper uses a nice mix of classic and modern techniques to help answer a question that many in the field of pigmentation biology have suspected for a long time. Not all dormant melanocyte stem cells are created equal,” Dr. Harris said.

“The one question not answered in this paper is how to reverse the dysfunction of the melanocyte stem cell ‘stuck’ in the hair bulge,” Dr. Harris added. “There are numerous clinical case studies in humans showing medicine-induced hair repigmentation, and perhaps these cases are examples of dysfunctional melanocyte stem cells becoming ‘unstuck.’ ”
 

‘Very interesting’ findings

The study and its results “are very interesting from a mechanistic perspective and basic science view,” said Anthony M. Rossi, MD, a private practice dermatologist and assistant attending dermatologist at Memorial Sloan Kettering Cancer Center in New York, when asked to comment on the results.

The research provides another view of how melanocyte stem cells can pigment the hair shaft, Dr. Rossi added. “It gives insight into the behavior of stem cells and how they can travel and change state, something not well-known before.”

Dr. Rossi cautioned that other mechanisms are likely taking place. He pointed out that graying of hair can actually occur after a sudden stress event, as well as with vitamin B12 deficiency, thyroid disease, vitiligo-related autoimmune destruction, neurofibromatosis, tuberous sclerosis, and alopecia areata.

The “standout concept” in this paper is that the melanocyte stem cells are stranded and are not getting the right signal from the microenvironment to amplify and appropriately migrate to provide pigment to the hair shaft, said Paradi Mirmirani, MD, a private practice dermatologist in Vallejo, Calif.

It could be challenging to find the right signaling to reverse the graying process, Dr. Mirmirani added. “But the first step is always to understand the underlying basic mechanism. It would be interesting to see if other factors such as smoking, stress … influence the melanocyte stem cells in the same way.”

Grants from the National Institutes of Health and the Department of Defense supported the study. Dr. Ito, Dr. Harris, Dr. Mirmirani, and Dr. Rossi had no relevant disclosures.

A version of this article first appeared on Medscape.com.