Psoriasis

Treatment with bimekizumab significantly improved symptoms in adults with palmoplantar pustulosis (PPP) and palmoplantar plaque psoriasis with pustules, in a case series of 21 individuals.

PPP is a type of pustular psoriasis that remains a treatment challenge, and available treatments for palmoplantar plaque psoriasis with pustules also “remain unsatisfactory,” according to Thierry Passeron, MD, PhD, of the dermatology service at Centre Hospitalier Universitaire de Nice (France), and colleagues. Bimekizumab, an anti-interleukin (IL)-17A and anti-IL-17F antibody therapy, has been used for psoriasis and psoriatic arthritis (PsA), but its effectiveness for PPP has not been studied, they said. In the United States, bimekizumab (Bimzelx), administered subcutaneously, was recently approved for treating moderate to severe plaque psoriasis in adults; in the European Union, it is approved for treating psoriasis, in addition to psoriatic arthritis, axial spondyloarthritis and ankylosing spondylitis.

In the case series published in JAMA Dermatology, Dr. Passeron and coinvestigators identified 11 adults with PPP and 10 with palmoplantar plaque psoriasis with pustules who were treated at one of seven tertiary dermatology centers in France from September 2022 through June 2023. PPP also has been associated with bone and joint inflammation in SAPHO (synovitis, acne, pustulosis, hyperostosis, osteitis) syndrome.

All patients received bimekizumab for at least 3 months. The patients — 19 women and 2 men — ranged in age from 24 to 68 years (mean age, 46 years). The primary outcome was complete clearance, defined as an Investigator Global Assessment (IGA) score of 0.

A total of 17 patients achieved an IGA score of zero in 1-4 months. Over 3-6 months, three patients achieved an IGA score of 1 (almost clear), and one patient achieved an IGA score of 2 (mild).

Three patients with PPP also had acrodermatitis continua of Hallopeau; in these patients, nail involvement improved by 50%-70% after 4-6 months of bimekizumab use. Two patients with SAPHO experienced complete clearance of skin lesions associated with improvement in joint pain.

Four patients developed oral and genital candidiasis during treatment, but all were treated successfully with antifungals. None of the patients discontinued bimekizumab because of adverse events. “All patients are still receiving treatment, and their psoriatic lesions remain controlled,” the authors wrote.

“The rapid and consistent improvement observed in the present case series supports the effectiveness of bimekizumab therapy in managing PPP, palmoplantar plaque psoriasis with pustules, and SAPHO syndrome,” they said in their discussion.

The study findings were limited by several factors including the small sample size and short follow-up period, and by the inclusion of only patients with severe disease; and prospective, placebo-controlled studies are needed to confirm the results, the researchers noted.

However, the results suggest that bimekizumab could be a treatment approach for PPP, palmoplantar plaque psoriasis with pustules, and SAPHO syndrome, and warrant a prospective, randomized, placebo-controlled, randomized clinical trial to confirm the findings, they concluded.

Dr. Passeron disclosed fees from AbbVie, ACM Pharma, Almirall, Boehringer Ingelheim, Bristol Myers Squibb, Calypso, Celgene, Galderma, Genzyme/Sanofi, GlaxoSmithKline, Incyte, Janssen, LEO Pharma, Eli Lilly, Novartis, Roivant Sciences, Sun Pharmaceuticals, and VYNE Therapeutics outside the current study; he is a cofounder of Yukin Therapeutics. Three authors disclosed receiving personal fees from UCB, manufacturer of bimekizumab, outside of the submitted work, another author disclosed receiving personal fees from UCB during the conduct of the study, and another reported receiving grants from UCB and several other companies, outside the submitted work.

The study findings were also presented at a meeting, Les Journées Dermatologiques de Paris 2023, on December 6, in Paris.

Treatment with bimekizumab significantly improved symptoms in adults with palmoplantar pustulosis (PPP) and palmoplantar plaque psoriasis with pustules, in a case series of 21 individuals.

PPP is a type of pustular psoriasis that remains a treatment challenge, and available treatments for palmoplantar plaque psoriasis with pustules also “remain unsatisfactory,” according to Thierry Passeron, MD, PhD, of the dermatology service at Centre Hospitalier Universitaire de Nice (France), and colleagues. Bimekizumab, an anti-interleukin (IL)-17A and anti-IL-17F antibody therapy, has been used for psoriasis and psoriatic arthritis (PsA), but its effectiveness for PPP has not been studied, they said. In the United States, bimekizumab (Bimzelx), administered subcutaneously, was recently approved for treating moderate to severe plaque psoriasis in adults; in the European Union, it is approved for treating psoriasis, in addition to psoriatic arthritis, axial spondyloarthritis and ankylosing spondylitis.

In the case series published in JAMA Dermatology, Dr. Passeron and coinvestigators identified 11 adults with PPP and 10 with palmoplantar plaque psoriasis with pustules who were treated at one of seven tertiary dermatology centers in France from September 2022 through June 2023. PPP also has been associated with bone and joint inflammation in SAPHO (synovitis, acne, pustulosis, hyperostosis, osteitis) syndrome.

All patients received bimekizumab for at least 3 months. The patients — 19 women and 2 men — ranged in age from 24 to 68 years (mean age, 46 years). The primary outcome was complete clearance, defined as an Investigator Global Assessment (IGA) score of 0.

A total of 17 patients achieved an IGA score of zero in 1-4 months. Over 3-6 months, three patients achieved an IGA score of 1 (almost clear), and one patient achieved an IGA score of 2 (mild).

Three patients with PPP also had acrodermatitis continua of Hallopeau; in these patients, nail involvement improved by 50%-70% after 4-6 months of bimekizumab use. Two patients with SAPHO experienced complete clearance of skin lesions associated with improvement in joint pain.

Four patients developed oral and genital candidiasis during treatment, but all were treated successfully with antifungals. None of the patients discontinued bimekizumab because of adverse events. “All patients are still receiving treatment, and their psoriatic lesions remain controlled,” the authors wrote.

“The rapid and consistent improvement observed in the present case series supports the effectiveness of bimekizumab therapy in managing PPP, palmoplantar plaque psoriasis with pustules, and SAPHO syndrome,” they said in their discussion.

The study findings were limited by several factors including the small sample size and short follow-up period, and by the inclusion of only patients with severe disease; and prospective, placebo-controlled studies are needed to confirm the results, the researchers noted.

However, the results suggest that bimekizumab could be a treatment approach for PPP, palmoplantar plaque psoriasis with pustules, and SAPHO syndrome, and warrant a prospective, randomized, placebo-controlled, randomized clinical trial to confirm the findings, they concluded.

Dr. Passeron disclosed fees from AbbVie, ACM Pharma, Almirall, Boehringer Ingelheim, Bristol Myers Squibb, Calypso, Celgene, Galderma, Genzyme/Sanofi, GlaxoSmithKline, Incyte, Janssen, LEO Pharma, Eli Lilly, Novartis, Roivant Sciences, Sun Pharmaceuticals, and VYNE Therapeutics outside the current study; he is a cofounder of Yukin Therapeutics. Three authors disclosed receiving personal fees from UCB, manufacturer of bimekizumab, outside of the submitted work, another author disclosed receiving personal fees from UCB during the conduct of the study, and another reported receiving grants from UCB and several other companies, outside the submitted work.

The study findings were also presented at a meeting, Les Journées Dermatologiques de Paris 2023, on December 6, in Paris.

Treatment with bimekizumab significantly improved symptoms in adults with palmoplantar pustulosis (PPP) and palmoplantar plaque psoriasis with pustules, in a case series of 21 individuals.

PPP is a type of pustular psoriasis that remains a treatment challenge, and available treatments for palmoplantar plaque psoriasis with pustules also “remain unsatisfactory,” according to Thierry Passeron, MD, PhD, of the dermatology service at Centre Hospitalier Universitaire de Nice (France), and colleagues. Bimekizumab, an anti-interleukin (IL)-17A and anti-IL-17F antibody therapy, has been used for psoriasis and psoriatic arthritis (PsA), but its effectiveness for PPP has not been studied, they said. In the United States, bimekizumab (Bimzelx), administered subcutaneously, was recently approved for treating moderate to severe plaque psoriasis in adults; in the European Union, it is approved for treating psoriasis, in addition to psoriatic arthritis, axial spondyloarthritis and ankylosing spondylitis.

In the case series published in JAMA Dermatology, Dr. Passeron and coinvestigators identified 11 adults with PPP and 10 with palmoplantar plaque psoriasis with pustules who were treated at one of seven tertiary dermatology centers in France from September 2022 through June 2023. PPP also has been associated with bone and joint inflammation in SAPHO (synovitis, acne, pustulosis, hyperostosis, osteitis) syndrome.

All patients received bimekizumab for at least 3 months. The patients — 19 women and 2 men — ranged in age from 24 to 68 years (mean age, 46 years). The primary outcome was complete clearance, defined as an Investigator Global Assessment (IGA) score of 0.

A total of 17 patients achieved an IGA score of zero in 1-4 months. Over 3-6 months, three patients achieved an IGA score of 1 (almost clear), and one patient achieved an IGA score of 2 (mild).

Three patients with PPP also had acrodermatitis continua of Hallopeau; in these patients, nail involvement improved by 50%-70% after 4-6 months of bimekizumab use. Two patients with SAPHO experienced complete clearance of skin lesions associated with improvement in joint pain.

Four patients developed oral and genital candidiasis during treatment, but all were treated successfully with antifungals. None of the patients discontinued bimekizumab because of adverse events. “All patients are still receiving treatment, and their psoriatic lesions remain controlled,” the authors wrote.

“The rapid and consistent improvement observed in the present case series supports the effectiveness of bimekizumab therapy in managing PPP, palmoplantar plaque psoriasis with pustules, and SAPHO syndrome,” they said in their discussion.

The study findings were limited by several factors including the small sample size and short follow-up period, and by the inclusion of only patients with severe disease; and prospective, placebo-controlled studies are needed to confirm the results, the researchers noted.

However, the results suggest that bimekizumab could be a treatment approach for PPP, palmoplantar plaque psoriasis with pustules, and SAPHO syndrome, and warrant a prospective, randomized, placebo-controlled, randomized clinical trial to confirm the findings, they concluded.

Dr. Passeron disclosed fees from AbbVie, ACM Pharma, Almirall, Boehringer Ingelheim, Bristol Myers Squibb, Calypso, Celgene, Galderma, Genzyme/Sanofi, GlaxoSmithKline, Incyte, Janssen, LEO Pharma, Eli Lilly, Novartis, Roivant Sciences, Sun Pharmaceuticals, and VYNE Therapeutics outside the current study; he is a cofounder of Yukin Therapeutics. Three authors disclosed receiving personal fees from UCB, manufacturer of bimekizumab, outside of the submitted work, another author disclosed receiving personal fees from UCB during the conduct of the study, and another reported receiving grants from UCB and several other companies, outside the submitted work.

The study findings were also presented at a meeting, Les Journées Dermatologiques de Paris 2023, on December 6, in Paris.

Tape stripping, which allows sampling of the epidermis to the midgranular layer, is a valid, minimally invasive way to identify cutaneous biomarkers in patients with hidradenitis suppurative (HS), results from a novel study showed.

“Tape strips can provide important clues to when and which drugs to use in HS in patients with both early and late disease, which can change clinical practice,” corresponding study author Emma Guttman-Yassky, MD, PhD, professor and chair of dermatology at the Icahn School of Medicine at Mount Sinai in New York City, said in an interview. “It is noninvasive and nonscarring,” she added.

Tape stripping has been validated in atopic dermatitis, psoriasis, and other dermatologic conditions in recent years. For the current study, which was published online in the Journal of the American Academy of Dermatology, and is believed to be the first of its kind, Dr. Guttman-Yassky and colleagues performed RNA sequencing from large D-Squame tape strips collected from lesional and nonlesional skin of 22 patients with HS and from 21 age- and sex-matched healthy controls. They correlated the expression of skin biomarkers between tape strips and a previously published gene-signature of HS biopsies. The mean age of patients with HS was 43 years, while the mean age of healthy controls was 35. The average International Hidradenitis Suppurativa Severity Score System (IHS4) score of the HS cohort was 36.

Consistent with published studies, the researchers found that tape strips identified an overall higher inflammatory burden in HS. Specifically, they observed an upregulation of known cytokines within the following pathways: Th1 (such as IFNG, CXCL9/10/11, and CCR5); Th17 (such as interleukin [IL]-17A/F, IL12B, IL23A, CAMP, and CCL20); Th2 (such as IL4R, IL13/IL31/IL10, CCR4, CCL7/CCL13/CCL24, TNFSF4/OX40L, and TNFRSF4/OX40); and Th22 (such as IL22 and IL32).

The researchers also found that the expression of Th17 and tumor necrosis factor (TNF)–alpha pathways were highly correlated between tape strips and biopsies and that HS clinical severity was significantly associated with expression of biomarkers, such as TNF-alpha, IL17A/F, OX40, JAK1-3, and IL4R in HS lesional and/or nonlesional skin.

“It was quite unexpected that we are able to identify, using a minimally invasive approach that samples only the upper layers of the epidermis, products and processes that are considered to be deeper-situated, such as IL-17, and other immune markers,” Dr. Guttman-Yassky said in the interview. “We were also surprised to see how well the tape-stripped–derived skin molecular profile correlated with that of biopsies, as well as how well it correlated with the clinical disease severity of HS.”

Also surprising, she added, was that the biomarkers in nonlesional tape-stripped skin, such as IL-17 and TNF alpha, “show high correlations with disease severity and provide clues to early disease.”

If using tape strips in HS is validated in larger cohort studies, the potential cost implications of using this approach in practice remain unclear, Dr. Guttman-Yassky said. “It is currently not cheap, but we are hoping that one day, we can provide a means to diagnose the disease and treat it early, and appropriately, utilizing this approach,” she commented. “We are excited about the applicability of this study to the early treatment and longitudinal follow up of HS with drugs that are targeting specific immune molecules and pathways,” she said, adding that it will also be useful for helping determine which drug should be used for which patient.

She and her co-authors acknowledged certain limitations of the study, including its small sample size and the fact that tape stripping is limited to the epidermis.

Asked to comment on the study, Jennifer L. Hsiao, MD, a dermatologist who directs the HS clinic at the University of Southern California, Los Angeles, said the findings “have important potential implications for our ability to one day personalize treatments for a patient with early HS in a minimally invasive way.”

As the study authors point out, she added, “tape strips only allow sampling of the epidermis, which is limiting in a disease like HS where much of the disruption is in the dermis with deep nodules and dermal tunnels. However, our overall goal should be to catch patients in the early stages of their disease before the occurrence of irreversible tissue damage such as dermal tunnels. Thus, the ongoing campaign for early diagnosis and early intervention by various stakeholders in the field of HS can help mitigate the impact of this inherent limitation of tape strips. It will be exciting to see larger studies that investigate tape strip results in relation to clinical phenotypes, disease progression, and therapeutic responses.”

The study was funded by an International Dermatology Outcome Measures Hidradenitis Suppurativa Grant. Dr. Guttman-Yassky disclosed that she has been a consultant to, an adviser for, and has received research grants from many pharmaceutical companies. Of the remaining authors, 2 also had multiple disclosures and 11 had no disclosures. Dr. Hsiao disclosed that she is a member of the board of directors for the Hidradenitis Suppurativa Foundation. She has also served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.

Tape stripping, which allows sampling of the epidermis to the midgranular layer, is a valid, minimally invasive way to identify cutaneous biomarkers in patients with hidradenitis suppurative (HS), results from a novel study showed.

“Tape strips can provide important clues to when and which drugs to use in HS in patients with both early and late disease, which can change clinical practice,” corresponding study author Emma Guttman-Yassky, MD, PhD, professor and chair of dermatology at the Icahn School of Medicine at Mount Sinai in New York City, said in an interview. “It is noninvasive and nonscarring,” she added.

Tape stripping has been validated in atopic dermatitis, psoriasis, and other dermatologic conditions in recent years. For the current study, which was published online in the Journal of the American Academy of Dermatology, and is believed to be the first of its kind, Dr. Guttman-Yassky and colleagues performed RNA sequencing from large D-Squame tape strips collected from lesional and nonlesional skin of 22 patients with HS and from 21 age- and sex-matched healthy controls. They correlated the expression of skin biomarkers between tape strips and a previously published gene-signature of HS biopsies. The mean age of patients with HS was 43 years, while the mean age of healthy controls was 35. The average International Hidradenitis Suppurativa Severity Score System (IHS4) score of the HS cohort was 36.

Consistent with published studies, the researchers found that tape strips identified an overall higher inflammatory burden in HS. Specifically, they observed an upregulation of known cytokines within the following pathways: Th1 (such as IFNG, CXCL9/10/11, and CCR5); Th17 (such as interleukin [IL]-17A/F, IL12B, IL23A, CAMP, and CCL20); Th2 (such as IL4R, IL13/IL31/IL10, CCR4, CCL7/CCL13/CCL24, TNFSF4/OX40L, and TNFRSF4/OX40); and Th22 (such as IL22 and IL32).

The researchers also found that the expression of Th17 and tumor necrosis factor (TNF)–alpha pathways were highly correlated between tape strips and biopsies and that HS clinical severity was significantly associated with expression of biomarkers, such as TNF-alpha, IL17A/F, OX40, JAK1-3, and IL4R in HS lesional and/or nonlesional skin.

“It was quite unexpected that we are able to identify, using a minimally invasive approach that samples only the upper layers of the epidermis, products and processes that are considered to be deeper-situated, such as IL-17, and other immune markers,” Dr. Guttman-Yassky said in the interview. “We were also surprised to see how well the tape-stripped–derived skin molecular profile correlated with that of biopsies, as well as how well it correlated with the clinical disease severity of HS.”

Also surprising, she added, was that the biomarkers in nonlesional tape-stripped skin, such as IL-17 and TNF alpha, “show high correlations with disease severity and provide clues to early disease.”

If using tape strips in HS is validated in larger cohort studies, the potential cost implications of using this approach in practice remain unclear, Dr. Guttman-Yassky said. “It is currently not cheap, but we are hoping that one day, we can provide a means to diagnose the disease and treat it early, and appropriately, utilizing this approach,” she commented. “We are excited about the applicability of this study to the early treatment and longitudinal follow up of HS with drugs that are targeting specific immune molecules and pathways,” she said, adding that it will also be useful for helping determine which drug should be used for which patient.

She and her co-authors acknowledged certain limitations of the study, including its small sample size and the fact that tape stripping is limited to the epidermis.

Asked to comment on the study, Jennifer L. Hsiao, MD, a dermatologist who directs the HS clinic at the University of Southern California, Los Angeles, said the findings “have important potential implications for our ability to one day personalize treatments for a patient with early HS in a minimally invasive way.”

As the study authors point out, she added, “tape strips only allow sampling of the epidermis, which is limiting in a disease like HS where much of the disruption is in the dermis with deep nodules and dermal tunnels. However, our overall goal should be to catch patients in the early stages of their disease before the occurrence of irreversible tissue damage such as dermal tunnels. Thus, the ongoing campaign for early diagnosis and early intervention by various stakeholders in the field of HS can help mitigate the impact of this inherent limitation of tape strips. It will be exciting to see larger studies that investigate tape strip results in relation to clinical phenotypes, disease progression, and therapeutic responses.”

The study was funded by an International Dermatology Outcome Measures Hidradenitis Suppurativa Grant. Dr. Guttman-Yassky disclosed that she has been a consultant to, an adviser for, and has received research grants from many pharmaceutical companies. Of the remaining authors, 2 also had multiple disclosures and 11 had no disclosures. Dr. Hsiao disclosed that she is a member of the board of directors for the Hidradenitis Suppurativa Foundation. She has also served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.

Tape stripping, which allows sampling of the epidermis to the midgranular layer, is a valid, minimally invasive way to identify cutaneous biomarkers in patients with hidradenitis suppurative (HS), results from a novel study showed.

“Tape strips can provide important clues to when and which drugs to use in HS in patients with both early and late disease, which can change clinical practice,” corresponding study author Emma Guttman-Yassky, MD, PhD, professor and chair of dermatology at the Icahn School of Medicine at Mount Sinai in New York City, said in an interview. “It is noninvasive and nonscarring,” she added.

Tape stripping has been validated in atopic dermatitis, psoriasis, and other dermatologic conditions in recent years. For the current study, which was published online in the Journal of the American Academy of Dermatology, and is believed to be the first of its kind, Dr. Guttman-Yassky and colleagues performed RNA sequencing from large D-Squame tape strips collected from lesional and nonlesional skin of 22 patients with HS and from 21 age- and sex-matched healthy controls. They correlated the expression of skin biomarkers between tape strips and a previously published gene-signature of HS biopsies. The mean age of patients with HS was 43 years, while the mean age of healthy controls was 35. The average International Hidradenitis Suppurativa Severity Score System (IHS4) score of the HS cohort was 36.

Consistent with published studies, the researchers found that tape strips identified an overall higher inflammatory burden in HS. Specifically, they observed an upregulation of known cytokines within the following pathways: Th1 (such as IFNG, CXCL9/10/11, and CCR5); Th17 (such as interleukin [IL]-17A/F, IL12B, IL23A, CAMP, and CCL20); Th2 (such as IL4R, IL13/IL31/IL10, CCR4, CCL7/CCL13/CCL24, TNFSF4/OX40L, and TNFRSF4/OX40); and Th22 (such as IL22 and IL32).

The researchers also found that the expression of Th17 and tumor necrosis factor (TNF)–alpha pathways were highly correlated between tape strips and biopsies and that HS clinical severity was significantly associated with expression of biomarkers, such as TNF-alpha, IL17A/F, OX40, JAK1-3, and IL4R in HS lesional and/or nonlesional skin.

“It was quite unexpected that we are able to identify, using a minimally invasive approach that samples only the upper layers of the epidermis, products and processes that are considered to be deeper-situated, such as IL-17, and other immune markers,” Dr. Guttman-Yassky said in the interview. “We were also surprised to see how well the tape-stripped–derived skin molecular profile correlated with that of biopsies, as well as how well it correlated with the clinical disease severity of HS.”

Also surprising, she added, was that the biomarkers in nonlesional tape-stripped skin, such as IL-17 and TNF alpha, “show high correlations with disease severity and provide clues to early disease.”

If using tape strips in HS is validated in larger cohort studies, the potential cost implications of using this approach in practice remain unclear, Dr. Guttman-Yassky said. “It is currently not cheap, but we are hoping that one day, we can provide a means to diagnose the disease and treat it early, and appropriately, utilizing this approach,” she commented. “We are excited about the applicability of this study to the early treatment and longitudinal follow up of HS with drugs that are targeting specific immune molecules and pathways,” she said, adding that it will also be useful for helping determine which drug should be used for which patient.

She and her co-authors acknowledged certain limitations of the study, including its small sample size and the fact that tape stripping is limited to the epidermis.

Asked to comment on the study, Jennifer L. Hsiao, MD, a dermatologist who directs the HS clinic at the University of Southern California, Los Angeles, said the findings “have important potential implications for our ability to one day personalize treatments for a patient with early HS in a minimally invasive way.”

As the study authors point out, she added, “tape strips only allow sampling of the epidermis, which is limiting in a disease like HS where much of the disruption is in the dermis with deep nodules and dermal tunnels. However, our overall goal should be to catch patients in the early stages of their disease before the occurrence of irreversible tissue damage such as dermal tunnels. Thus, the ongoing campaign for early diagnosis and early intervention by various stakeholders in the field of HS can help mitigate the impact of this inherent limitation of tape strips. It will be exciting to see larger studies that investigate tape strip results in relation to clinical phenotypes, disease progression, and therapeutic responses.”

The study was funded by an International Dermatology Outcome Measures Hidradenitis Suppurativa Grant. Dr. Guttman-Yassky disclosed that she has been a consultant to, an adviser for, and has received research grants from many pharmaceutical companies. Of the remaining authors, 2 also had multiple disclosures and 11 had no disclosures. Dr. Hsiao disclosed that she is a member of the board of directors for the Hidradenitis Suppurativa Foundation. She has also served as a consultant for AbbVie, Aclaris, Boehringer Ingelheim, Incyte, Novartis, and UCB; as a speaker for AbbVie; and as an investigator for Amgen, Boehringer Ingelheim, and Incyte.

TOPLINE:

Patients with psoriasis had a 1.77-fold increased risk of having obstructive sleep apnea, in a study comparing patients with psoriasis with controls.

METHODOLOGY:

• Prior studies have established a link between psoriasis and obstructive sleep apnea (OSA), but some have suggested that confounders may drive the association.
• Using a case-control design, researchers analyzed data from 156,707 participants in the National Institutes of Health’s : 5140 with psoriasis and 151,567 controls.
• They used Pearson’s x 2 test to compare the prevalence of OSA among cases and controls, logistic regression to calculate odds ratios (ORs) in multivariable analysis, and two-sided t-tests to evaluate the significance between continuous variables.

TAKEAWAY:

• Compared with controls, patients with psoriasis were older (a mean of 62.4 vs 57.3 years, respectively), more likely to be White (86.1% vs 70.6%), reported higher annual household incomes (59.9% vs 52.6%), and were more likely to smoke (48.2% vs 43.4%).
• The rate of OSA was significantly higher among patients with psoriasis compared with controls (29.3% vs 17.1%; P < .001).
• On unadjusted multivariable logistic regression controlling for age, gender, and race, psoriasis was significantly associated with OSA (OR, 1.77, 95% CI, 1.66 - 1.89; P < .001).
• Psoriasis was also significantly associated with OSA in the adjusted model controlling for age, gender, race, BMI, and smoking status (OR, 1.66, 95% CI, 1.55 - 1.77; P < .001) and in the adjusted model controlling for age, gender, race, BMI, smoking status, type 2 diabetes, congestive heart failure, hypertension, history of myocardial infarction, angina, and peripheral artery disease (OR, 1.45, 95% CI, 1.35 - 1.55; P <.001).

IN PRACTICE:

“This study further substantiates the association between psoriasis and OSA, reinforcing the importance of evaluation for OSA when clinically appropriate given that both psoriasis and OSA contribute to adverse health outcomes,” the authors conclude.

SOURCE:

Corresponding author Jeffrey M. Cohen, MD, of the Department of Dermatology at Yale University, New Haven, Connecticut, led the research. The study was published online in the Journal of the American Academy of Dermatology.

LIMITATIONS:

Study limitations included the use of electronic health record data, a potential lack of generalizability to the US population, and reliance on survey data for certain variables such as income and smoking status.

DISCLOSURES:

The All of Us Research Program is supported by the National Institutes of Health. Cohen disclosed that he serves on a data safety and monitoring board for Advarra.

A version of this article appeared on Medscape.com.

TOPLINE:

Patients with psoriasis had a 1.77-fold increased risk of having obstructive sleep apnea, in a study comparing patients with psoriasis with controls.

METHODOLOGY:

• Prior studies have established a link between psoriasis and obstructive sleep apnea (OSA), but some have suggested that confounders may drive the association.
• Using a case-control design, researchers analyzed data from 156,707 participants in the National Institutes of Health’s : 5140 with psoriasis and 151,567 controls.
• They used Pearson’s x 2 test to compare the prevalence of OSA among cases and controls, logistic regression to calculate odds ratios (ORs) in multivariable analysis, and two-sided t-tests to evaluate the significance between continuous variables.

TAKEAWAY:

• Compared with controls, patients with psoriasis were older (a mean of 62.4 vs 57.3 years, respectively), more likely to be White (86.1% vs 70.6%), reported higher annual household incomes (59.9% vs 52.6%), and were more likely to smoke (48.2% vs 43.4%).
• The rate of OSA was significantly higher among patients with psoriasis compared with controls (29.3% vs 17.1%; P < .001).
• On unadjusted multivariable logistic regression controlling for age, gender, and race, psoriasis was significantly associated with OSA (OR, 1.77, 95% CI, 1.66 - 1.89; P < .001).
• Psoriasis was also significantly associated with OSA in the adjusted model controlling for age, gender, race, BMI, and smoking status (OR, 1.66, 95% CI, 1.55 - 1.77; P < .001) and in the adjusted model controlling for age, gender, race, BMI, smoking status, type 2 diabetes, congestive heart failure, hypertension, history of myocardial infarction, angina, and peripheral artery disease (OR, 1.45, 95% CI, 1.35 - 1.55; P <.001).

IN PRACTICE:

“This study further substantiates the association between psoriasis and OSA, reinforcing the importance of evaluation for OSA when clinically appropriate given that both psoriasis and OSA contribute to adverse health outcomes,” the authors conclude.

SOURCE:

Corresponding author Jeffrey M. Cohen, MD, of the Department of Dermatology at Yale University, New Haven, Connecticut, led the research. The study was published online in the Journal of the American Academy of Dermatology.

LIMITATIONS:

Study limitations included the use of electronic health record data, a potential lack of generalizability to the US population, and reliance on survey data for certain variables such as income and smoking status.

DISCLOSURES:

The All of Us Research Program is supported by the National Institutes of Health. Cohen disclosed that he serves on a data safety and monitoring board for Advarra.

A version of this article appeared on Medscape.com.

TOPLINE:

Patients with psoriasis had a 1.77-fold increased risk of having obstructive sleep apnea, in a study comparing patients with psoriasis with controls.

METHODOLOGY:

• Prior studies have established a link between psoriasis and obstructive sleep apnea (OSA), but some have suggested that confounders may drive the association.
• Using a case-control design, researchers analyzed data from 156,707 participants in the National Institutes of Health’s : 5140 with psoriasis and 151,567 controls.
• They used Pearson’s x 2 test to compare the prevalence of OSA among cases and controls, logistic regression to calculate odds ratios (ORs) in multivariable analysis, and two-sided t-tests to evaluate the significance between continuous variables.

TAKEAWAY:

• Compared with controls, patients with psoriasis were older (a mean of 62.4 vs 57.3 years, respectively), more likely to be White (86.1% vs 70.6%), reported higher annual household incomes (59.9% vs 52.6%), and were more likely to smoke (48.2% vs 43.4%).
• The rate of OSA was significantly higher among patients with psoriasis compared with controls (29.3% vs 17.1%; P < .001).
• On unadjusted multivariable logistic regression controlling for age, gender, and race, psoriasis was significantly associated with OSA (OR, 1.77, 95% CI, 1.66 - 1.89; P < .001).
• Psoriasis was also significantly associated with OSA in the adjusted model controlling for age, gender, race, BMI, and smoking status (OR, 1.66, 95% CI, 1.55 - 1.77; P < .001) and in the adjusted model controlling for age, gender, race, BMI, smoking status, type 2 diabetes, congestive heart failure, hypertension, history of myocardial infarction, angina, and peripheral artery disease (OR, 1.45, 95% CI, 1.35 - 1.55; P <.001).

IN PRACTICE:

“This study further substantiates the association between psoriasis and OSA, reinforcing the importance of evaluation for OSA when clinically appropriate given that both psoriasis and OSA contribute to adverse health outcomes,” the authors conclude.

SOURCE:

Corresponding author Jeffrey M. Cohen, MD, of the Department of Dermatology at Yale University, New Haven, Connecticut, led the research. The study was published online in the Journal of the American Academy of Dermatology.

LIMITATIONS:

Study limitations included the use of electronic health record data, a potential lack of generalizability to the US population, and reliance on survey data for certain variables such as income and smoking status.

DISCLOSURES:

The All of Us Research Program is supported by the National Institutes of Health. Cohen disclosed that he serves on a data safety and monitoring board for Advarra.

A version of this article appeared on Medscape.com.

TOPLINE:

The use of low-dose methotrexate among older adults with chronic kidney disease (CKD) was associated with a significantly increased risk at 90 days for serious adverse events requiring a hospital visit, compared with starting treatment with hydroxychloroquine.

METHODOLOGY:

• In a retrospective, population-based cohort study conducted in Ontario, researchers used linked administrative healthcare data to identify adults aged 66 years and older with CKD who were not undergoing dialysis and were new to medication; CKD was defined as an estimated glomerular filtration rate (eGFR) of less than 60 mL/min per 1.73 m².
• The study population included 2,309 individuals who began treatment with low-dose methotrexate (5-35 mg/week); they were matched with 2,309 individuals who began treatment with hydroxychloroquine (200-400 mg/day). The median age was 76 years, 69% were women, and rheumatoid arthritis was the most common diagnosis (56%).
• The primary outcome was the risk of a hospital visit at 90 days for a composite of serious adverse events that included myelosuppression, sepsis, pneumotoxic effects, or hepatoxic effects.

TAKEAWAY:

• Overall, 3.55% of methotrexate patients and 1.73% of hydroxychloroquine patients met the primary outcome (risk ratio, 2.05); these events occurred at a median of 49 days and 43 days after starting the medications for the two groups, respectively.
• In an analysis by eGFR category, the risk of serious adverse events at 90 days increased among patients with eGFR levels less than 45 mL/min per 1.73 m² (RR, 2.79).
• In a secondary comparison, the 90-day risk of serious adverse events was higher among methotrexate patients who began treatment with doses of 15-35 mg/week in comparison with those whose initial doses were 5 to less than 15 mg/week.

IN PRACTICE:

“Patients with CKD starting low-dose methotrexate should have active surveillance, including blood tests and chest radiographs performed regularly to monitor for signs of myelosuppression, infection, hepatotoxic effects, and pneumotoxic effects,” the researchers wrote.

SOURCE:

The lead author on the study was Flory T. Muanda, MD, of Western University, London, Ont. The study was published online in JAMA Network Open.

LIMITATIONS:

The observational design and lack of data on patients’ adherence to medications were among the limiting factors, as were the focus on older adults with CKD and the lack of assessment of the risk-benefit ratio of low-dose methotrexate.

DISCLOSURES:

The study was supported by the Institute for Clinical Evaluative Sciences. Dr. Muanda had no financial conflicts to disclose.

A version of this article appeared on Medscape.com.

TOPLINE:

The use of low-dose methotrexate among older adults with chronic kidney disease (CKD) was associated with a significantly increased risk at 90 days for serious adverse events requiring a hospital visit, compared with starting treatment with hydroxychloroquine.

METHODOLOGY:

• In a retrospective, population-based cohort study conducted in Ontario, researchers used linked administrative healthcare data to identify adults aged 66 years and older with CKD who were not undergoing dialysis and were new to medication; CKD was defined as an estimated glomerular filtration rate (eGFR) of less than 60 mL/min per 1.73 m².
• The study population included 2,309 individuals who began treatment with low-dose methotrexate (5-35 mg/week); they were matched with 2,309 individuals who began treatment with hydroxychloroquine (200-400 mg/day). The median age was 76 years, 69% were women, and rheumatoid arthritis was the most common diagnosis (56%).
• The primary outcome was the risk of a hospital visit at 90 days for a composite of serious adverse events that included myelosuppression, sepsis, pneumotoxic effects, or hepatoxic effects.

TAKEAWAY:

• Overall, 3.55% of methotrexate patients and 1.73% of hydroxychloroquine patients met the primary outcome (risk ratio, 2.05); these events occurred at a median of 49 days and 43 days after starting the medications for the two groups, respectively.
• In an analysis by eGFR category, the risk of serious adverse events at 90 days increased among patients with eGFR levels less than 45 mL/min per 1.73 m² (RR, 2.79).
• In a secondary comparison, the 90-day risk of serious adverse events was higher among methotrexate patients who began treatment with doses of 15-35 mg/week in comparison with those whose initial doses were 5 to less than 15 mg/week.

IN PRACTICE:

“Patients with CKD starting low-dose methotrexate should have active surveillance, including blood tests and chest radiographs performed regularly to monitor for signs of myelosuppression, infection, hepatotoxic effects, and pneumotoxic effects,” the researchers wrote.

SOURCE:

The lead author on the study was Flory T. Muanda, MD, of Western University, London, Ont. The study was published online in JAMA Network Open.

LIMITATIONS:

The observational design and lack of data on patients’ adherence to medications were among the limiting factors, as were the focus on older adults with CKD and the lack of assessment of the risk-benefit ratio of low-dose methotrexate.

DISCLOSURES:

The study was supported by the Institute for Clinical Evaluative Sciences. Dr. Muanda had no financial conflicts to disclose.

A version of this article appeared on Medscape.com.

TOPLINE:

The use of low-dose methotrexate among older adults with chronic kidney disease (CKD) was associated with a significantly increased risk at 90 days for serious adverse events requiring a hospital visit, compared with starting treatment with hydroxychloroquine.

METHODOLOGY:

• In a retrospective, population-based cohort study conducted in Ontario, researchers used linked administrative healthcare data to identify adults aged 66 years and older with CKD who were not undergoing dialysis and were new to medication; CKD was defined as an estimated glomerular filtration rate (eGFR) of less than 60 mL/min per 1.73 m².
• The study population included 2,309 individuals who began treatment with low-dose methotrexate (5-35 mg/week); they were matched with 2,309 individuals who began treatment with hydroxychloroquine (200-400 mg/day). The median age was 76 years, 69% were women, and rheumatoid arthritis was the most common diagnosis (56%).
• The primary outcome was the risk of a hospital visit at 90 days for a composite of serious adverse events that included myelosuppression, sepsis, pneumotoxic effects, or hepatoxic effects.

TAKEAWAY:

• Overall, 3.55% of methotrexate patients and 1.73% of hydroxychloroquine patients met the primary outcome (risk ratio, 2.05); these events occurred at a median of 49 days and 43 days after starting the medications for the two groups, respectively.
• In an analysis by eGFR category, the risk of serious adverse events at 90 days increased among patients with eGFR levels less than 45 mL/min per 1.73 m² (RR, 2.79).
• In a secondary comparison, the 90-day risk of serious adverse events was higher among methotrexate patients who began treatment with doses of 15-35 mg/week in comparison with those whose initial doses were 5 to less than 15 mg/week.

IN PRACTICE:

“Patients with CKD starting low-dose methotrexate should have active surveillance, including blood tests and chest radiographs performed regularly to monitor for signs of myelosuppression, infection, hepatotoxic effects, and pneumotoxic effects,” the researchers wrote.

SOURCE:

The lead author on the study was Flory T. Muanda, MD, of Western University, London, Ont. The study was published online in JAMA Network Open.

LIMITATIONS:

The observational design and lack of data on patients’ adherence to medications were among the limiting factors, as were the focus on older adults with CKD and the lack of assessment of the risk-benefit ratio of low-dose methotrexate.

DISCLOSURES:

The study was supported by the Institute for Clinical Evaluative Sciences. Dr. Muanda had no financial conflicts to disclose.

A version of this article appeared on Medscape.com.

NEW YORK – From clinical trials to textbooks, patients with darker skin types who have psoriasis overall – and Black patients in particular – are underrepresented, which might at least partially explain why clinicians are slow to recognize nail involvement, even when the skin disease has already been diagnosed, according to Shari R. Lipner, MD.

In a recently published review of 45 randomized controlled trials of therapies for nail psoriasis, almost all included information about the gender of the patients enrolled, but only about 35% reported race and/or ethnicity, Dr. Lipner, associate professor of dermatology, Weill Cornell Medical College, New York, said at the Skin of Color Update 2023. The proportion climbed to 59% in trials that included at least one study site in the United States, although representation of non-White patients in studies conducted in the United States was not proportional to the population (13.4% vs. 39.9%), said Dr. Lipner, senior author of the review .
 

Black patients largely unrepresented in photos

When an Internet search was conducted for images of nail psoriasis, the proportion of images fell as the number of the Fitzpatrick scale increased. Fitzpatrick skin types 1 or 2 represented 70% of the images, skin types 3 to 4 represented about 27%, leaving just 3% represented by darker skin types, Dr. Lipner said.

Ted Bosworth/MDedge News

“Unfortunately, things are not much better if you look at the dermatology and nail-specific textbooks. In fact, the percentages we see are almost identical,” said Dr. Lipner, noting that her review of images suggested that only about 3% of images in textbooks are of Fitzpatrick skin types 5 or 6, an obstacle for clinicians learning to recognize nail involvement in skin of color patients with psoriasis.

“We have written a couple of papers on this topic, including a call to action” in a letter to the editor in the Journal of the American Academy of Dermatology, Dr. Lipner noted. “To ensure access to safe and effective treatments for all patient populations,” she and her coauthor wrote, “we advocate the prioritized enrollment of racial and ethnic minority groups in psoriasis, PsA [psoriatic arthritis], and NP [nail psoriasis] clinical trials.”

Data from the 2009-2010 U.S. National Health and Nutrition Examination Survey (NHANES) confirms that psoriasis is less common in Blacks (1.9%) and Hispanics (1.6%) than Whites (3.6%). But these lower numbers still translate into substantial numbers nationally. Of those with psoriasis, the lifetime incidence of nail involvement has been variously estimated between 80% and 90%, Dr. Lipner said.

In about 10% of patients with psoriasis, nail involvement is isolated, occurring in the absence of skin lesions, a proportion that appears to be similar in Blacks and Whites according to Dr. Lipner.
 

Patient characteristics similar by race

In a study conducted at her own center, many of the characteristics of psoriasis were similar when those with a Fitzpatrick skin type 4 or higher were compared to those of 3 or lower. This included male-female distribution, smoking history, and presence of accompanying psoriatic arthritis. There was one discrepancy between lighter and darker skin.

“The big difference was that it took almost 3 years longer [on average] for darker skin to be diagnosed, and there was worse severity of disease,” Dr. Lipner said.

Like cutaneous manifestations of psoriasis, there are differences in appearance in the nail, many of which are simply produced by how skin color alters the appearance, such as the brownish hue of erythema in darker versus lighter skin. Dr. Lipner also noted that many of the features, such as keratosis, can be more severe in patients with darker skin types, but this is likely because of the delay in diagnosis.

The problem with overlooking nail psoriasis in patients of any skin color is the significant and independent adverse impact imposed by nail disease on quality of life, she added. She recounted the case of a 22-year-old Black patient whose nail psoriasis was overlooked even as she was being treated for her skin lesions.

“The diagnosis of nail psoriasis was missed for 3 years,” said Dr. Lipner, noting that the nail involvement was not trivial. “She had trouble doing her daily activities of life, but also, she was very embarrassed by her nails, not surprisingly.”

The problem of underrepresentation of Blacks in photos depicting nail diseases is not going unnoticed.

“Recently, there has been a concerted effort on the part of authors and editors to include more images of skin of color patients in published articles and textbooks,” said Jane S. Bellet, MD, professor of dermatology, Duke University, Durham, N.C.

An expert in nail disorders, particularly in children, Dr. Bellet said in an interview that this trend “must continue and increase in volume.” She said that the need for more images of nail disease in skin of color is not restricted to textbooks but includes “other learning materials, such as online atlases.”

Dr. Lipner and Dr. Bellet reported no potential conflicts of interest relative to this topic.

NEW YORK – From clinical trials to textbooks, patients with darker skin types who have psoriasis overall – and Black patients in particular – are underrepresented, which might at least partially explain why clinicians are slow to recognize nail involvement, even when the skin disease has already been diagnosed, according to Shari R. Lipner, MD.

In a recently published review of 45 randomized controlled trials of therapies for nail psoriasis, almost all included information about the gender of the patients enrolled, but only about 35% reported race and/or ethnicity, Dr. Lipner, associate professor of dermatology, Weill Cornell Medical College, New York, said at the Skin of Color Update 2023. The proportion climbed to 59% in trials that included at least one study site in the United States, although representation of non-White patients in studies conducted in the United States was not proportional to the population (13.4% vs. 39.9%), said Dr. Lipner, senior author of the review .
 

Black patients largely unrepresented in photos

When an Internet search was conducted for images of nail psoriasis, the proportion of images fell as the number of the Fitzpatrick scale increased. Fitzpatrick skin types 1 or 2 represented 70% of the images, skin types 3 to 4 represented about 27%, leaving just 3% represented by darker skin types, Dr. Lipner said.

Ted Bosworth/MDedge News

“Unfortunately, things are not much better if you look at the dermatology and nail-specific textbooks. In fact, the percentages we see are almost identical,” said Dr. Lipner, noting that her review of images suggested that only about 3% of images in textbooks are of Fitzpatrick skin types 5 or 6, an obstacle for clinicians learning to recognize nail involvement in skin of color patients with psoriasis.

“We have written a couple of papers on this topic, including a call to action” in a letter to the editor in the Journal of the American Academy of Dermatology, Dr. Lipner noted. “To ensure access to safe and effective treatments for all patient populations,” she and her coauthor wrote, “we advocate the prioritized enrollment of racial and ethnic minority groups in psoriasis, PsA [psoriatic arthritis], and NP [nail psoriasis] clinical trials.”

Data from the 2009-2010 U.S. National Health and Nutrition Examination Survey (NHANES) confirms that psoriasis is less common in Blacks (1.9%) and Hispanics (1.6%) than Whites (3.6%). But these lower numbers still translate into substantial numbers nationally. Of those with psoriasis, the lifetime incidence of nail involvement has been variously estimated between 80% and 90%, Dr. Lipner said.

In about 10% of patients with psoriasis, nail involvement is isolated, occurring in the absence of skin lesions, a proportion that appears to be similar in Blacks and Whites according to Dr. Lipner.
 

Patient characteristics similar by race

In a study conducted at her own center, many of the characteristics of psoriasis were similar when those with a Fitzpatrick skin type 4 or higher were compared to those of 3 or lower. This included male-female distribution, smoking history, and presence of accompanying psoriatic arthritis. There was one discrepancy between lighter and darker skin.

“The big difference was that it took almost 3 years longer [on average] for darker skin to be diagnosed, and there was worse severity of disease,” Dr. Lipner said.

Like cutaneous manifestations of psoriasis, there are differences in appearance in the nail, many of which are simply produced by how skin color alters the appearance, such as the brownish hue of erythema in darker versus lighter skin. Dr. Lipner also noted that many of the features, such as keratosis, can be more severe in patients with darker skin types, but this is likely because of the delay in diagnosis.

The problem with overlooking nail psoriasis in patients of any skin color is the significant and independent adverse impact imposed by nail disease on quality of life, she added. She recounted the case of a 22-year-old Black patient whose nail psoriasis was overlooked even as she was being treated for her skin lesions.

“The diagnosis of nail psoriasis was missed for 3 years,” said Dr. Lipner, noting that the nail involvement was not trivial. “She had trouble doing her daily activities of life, but also, she was very embarrassed by her nails, not surprisingly.”

The problem of underrepresentation of Blacks in photos depicting nail diseases is not going unnoticed.

“Recently, there has been a concerted effort on the part of authors and editors to include more images of skin of color patients in published articles and textbooks,” said Jane S. Bellet, MD, professor of dermatology, Duke University, Durham, N.C.

An expert in nail disorders, particularly in children, Dr. Bellet said in an interview that this trend “must continue and increase in volume.” She said that the need for more images of nail disease in skin of color is not restricted to textbooks but includes “other learning materials, such as online atlases.”

Dr. Lipner and Dr. Bellet reported no potential conflicts of interest relative to this topic.

NEW YORK – From clinical trials to textbooks, patients with darker skin types who have psoriasis overall – and Black patients in particular – are underrepresented, which might at least partially explain why clinicians are slow to recognize nail involvement, even when the skin disease has already been diagnosed, according to Shari R. Lipner, MD.

In a recently published review of 45 randomized controlled trials of therapies for nail psoriasis, almost all included information about the gender of the patients enrolled, but only about 35% reported race and/or ethnicity, Dr. Lipner, associate professor of dermatology, Weill Cornell Medical College, New York, said at the Skin of Color Update 2023. The proportion climbed to 59% in trials that included at least one study site in the United States, although representation of non-White patients in studies conducted in the United States was not proportional to the population (13.4% vs. 39.9%), said Dr. Lipner, senior author of the review .
 

Black patients largely unrepresented in photos

When an Internet search was conducted for images of nail psoriasis, the proportion of images fell as the number of the Fitzpatrick scale increased. Fitzpatrick skin types 1 or 2 represented 70% of the images, skin types 3 to 4 represented about 27%, leaving just 3% represented by darker skin types, Dr. Lipner said.

Ted Bosworth/MDedge News

“Unfortunately, things are not much better if you look at the dermatology and nail-specific textbooks. In fact, the percentages we see are almost identical,” said Dr. Lipner, noting that her review of images suggested that only about 3% of images in textbooks are of Fitzpatrick skin types 5 or 6, an obstacle for clinicians learning to recognize nail involvement in skin of color patients with psoriasis.

“We have written a couple of papers on this topic, including a call to action” in a letter to the editor in the Journal of the American Academy of Dermatology, Dr. Lipner noted. “To ensure access to safe and effective treatments for all patient populations,” she and her coauthor wrote, “we advocate the prioritized enrollment of racial and ethnic minority groups in psoriasis, PsA [psoriatic arthritis], and NP [nail psoriasis] clinical trials.”

Data from the 2009-2010 U.S. National Health and Nutrition Examination Survey (NHANES) confirms that psoriasis is less common in Blacks (1.9%) and Hispanics (1.6%) than Whites (3.6%). But these lower numbers still translate into substantial numbers nationally. Of those with psoriasis, the lifetime incidence of nail involvement has been variously estimated between 80% and 90%, Dr. Lipner said.

In about 10% of patients with psoriasis, nail involvement is isolated, occurring in the absence of skin lesions, a proportion that appears to be similar in Blacks and Whites according to Dr. Lipner.
 

Patient characteristics similar by race

In a study conducted at her own center, many of the characteristics of psoriasis were similar when those with a Fitzpatrick skin type 4 or higher were compared to those of 3 or lower. This included male-female distribution, smoking history, and presence of accompanying psoriatic arthritis. There was one discrepancy between lighter and darker skin.

“The big difference was that it took almost 3 years longer [on average] for darker skin to be diagnosed, and there was worse severity of disease,” Dr. Lipner said.

Like cutaneous manifestations of psoriasis, there are differences in appearance in the nail, many of which are simply produced by how skin color alters the appearance, such as the brownish hue of erythema in darker versus lighter skin. Dr. Lipner also noted that many of the features, such as keratosis, can be more severe in patients with darker skin types, but this is likely because of the delay in diagnosis.

The problem with overlooking nail psoriasis in patients of any skin color is the significant and independent adverse impact imposed by nail disease on quality of life, she added. She recounted the case of a 22-year-old Black patient whose nail psoriasis was overlooked even as she was being treated for her skin lesions.

“The diagnosis of nail psoriasis was missed for 3 years,” said Dr. Lipner, noting that the nail involvement was not trivial. “She had trouble doing her daily activities of life, but also, she was very embarrassed by her nails, not surprisingly.”

The problem of underrepresentation of Blacks in photos depicting nail diseases is not going unnoticed.

“Recently, there has been a concerted effort on the part of authors and editors to include more images of skin of color patients in published articles and textbooks,” said Jane S. Bellet, MD, professor of dermatology, Duke University, Durham, N.C.

An expert in nail disorders, particularly in children, Dr. Bellet said in an interview that this trend “must continue and increase in volume.” She said that the need for more images of nail disease in skin of color is not restricted to textbooks but includes “other learning materials, such as online atlases.”

Dr. Lipner and Dr. Bellet reported no potential conflicts of interest relative to this topic.

NEW YORK – Many inflammatory diseases, such as psoriasis and atopic dermatitis (AD), can present differently in patients with darker skin types, but it is the pigmentary changes themselves that are often a dominant concern for parents, according to pediatric dermatologist Candrice R. Heath, MD.

Skin diseases pose a greater risk of both hyper- and hypopigmentation in patients with darker skin types, but the fear and concern that this raises for permanent disfigurement is not limited to Blacks, Dr. Heath, assistant professor of pediatric dermatology at Temple University, Philadelphia, said at the Skin of Color Update 2023.

“Culturally, pigmentation changes can be huge. For people of Indian descent, for example, pigmentary changes like light spots on the skin might be an obstacle to marriage, so it can really be life changing,” she added.

In patients with darker skin tones presenting with an inflammatory skin disease, such as AD or psoriasis, Dr. Heath advised asking specifically about change in skin tone even if it is not readily apparent. In pediatric patients, it is also appropriate to include parents in this conversation.
 

Consider the parent’s perspective

“When you are taking care of a child or adolescent, the patient is likely to be concerned about changes in pigmentation, but it is important to remember that the adult in the room might have had their own journey with brown skin and has dealt with the burden of pigment changes,” Dr. Heath said.

For the parent, the pigmentation changes, rather than the inflammation, might be the governing issue and the reason that he or she brought the child to the clinician. Dr. Heath suggested that it is important for caregivers to explicitly recognize their concern, explain that addressing the pigmentary changes is part of the treatment plan, and to create realistic expectations about how long pigmentary changes will take to resolve.

As an example, Dr. Heath recounted a difficult case of a Black infant with disseminated hyperpigmentation and features that did not preclude pathology other than AD. Dr. Heath created a multifaceted treatment plan to address the inflammation in distinct areas of the body that included low-strength topical steroids for the face, stronger steroids for the body, and advice on scalp and skin care.

“I thought this was a great treatment plan out of the gate – I was covering all of the things on my differential list – I thought that the mom would be thinking, this doctor is amazing,” Dr. Heath said.
 

Pigmentary changes are a priority

However, that was not what the patient’s mother was thinking. Having failed to explicitly recognize her concern about the pigmentation changes and how the treatment would address this issue, the mother was disappointed.

“She had one question: Will my baby ever be one color? That was her main concern,” said Dr. Heath, indicating that other clinicians seeing inflammatory diseases in children with darker skin types can learn from her experience.

“Really, you have to acknowledge that the condition you are treating is causing the pigmentation change, and we do see that and that we have a treatment plan in place,” she said.

Because of differences in how inflammatory skin diseases present in darker skin types, there is plenty of room for a delayed diagnosis for clinicians who do not see many of these patients, according to Dr. Heath. Follicular eczema, which is common in skin of color, often presents with pruritus but differences in the appearance of the underlying disease can threaten a delay in diagnosis.

In cases of follicular eczema with itch in darker skin, the bumps look and feel like goose bumps, which “means that the eczema is really active and inflamed,” Dr. Heath said. When the skin becomes smooth and the itch dissipates, “you know that they are under great control.”

Psoriasis is often missed in children with darker skin types based on the misperception that it is rare. Although it is true that it is less common in Blacks than Whites, it is not rare, according to Dr. Heath. In inspecting the telltale erythematous plaque–like lesions, clinicians might start to consider alternative diagnoses when they do not detect the same erythematous appearance, but the reddish tone is often concealed in darker skin.

She said that predominant involvement in the head and neck and diaper area is often more common in children of color and that nail or scalp involvement, when present, is often a clue that psoriasis is the diagnosis.

Again, because many clinicians do not think immediately of psoriasis in darker skin children with lesions in the scalp, Dr. Heath advised this is another reason to include psoriasis in the differential diagnosis.

“If you have a child that has failed multiple courses of treatment for tinea capitis and they have well-demarcated plaques, it’s time to really start to think about pediatric psoriasis,” she said.
 

Restoring skin tone can be the priority

Asked to comment on Dr. Heath’s advice about the importance of acknowledging pigmentary changes associated with inflammatory skin diseases in patients of color, Jenna Lester, MD, the founding director of the Skin of Color Clinic at the University of California, San Francisco, called it an “often unspoken concern of patients.”

“Pigmentary changes that occur secondary to an inflammatory condition should be addressed and treated alongside the inciting condition,” she agreed.

Even if changes in skin color or skin tone are not a specific complaint of the patients, Dr. Lester also urged clinicians to raise the topic. If change in skin pigmentation is part of the clinical picture, this should be targeted in the treatment plan.

“In acne, for example, often times I find that patients are as worried about postinflammatory hyperpigmentation as they are about their acne,” she said, reiterating the advice provided by Dr. Heath.

Dr. Heath has financial relationships with Arcutis, Janssen, Johnson & Johnson, Lilly, and Regeneron. Dr. Lester reported no potential conflicts of interest.

NEW YORK – Many inflammatory diseases, such as psoriasis and atopic dermatitis (AD), can present differently in patients with darker skin types, but it is the pigmentary changes themselves that are often a dominant concern for parents, according to pediatric dermatologist Candrice R. Heath, MD.

Skin diseases pose a greater risk of both hyper- and hypopigmentation in patients with darker skin types, but the fear and concern that this raises for permanent disfigurement is not limited to Blacks, Dr. Heath, assistant professor of pediatric dermatology at Temple University, Philadelphia, said at the Skin of Color Update 2023.

“Culturally, pigmentation changes can be huge. For people of Indian descent, for example, pigmentary changes like light spots on the skin might be an obstacle to marriage, so it can really be life changing,” she added.

In patients with darker skin tones presenting with an inflammatory skin disease, such as AD or psoriasis, Dr. Heath advised asking specifically about change in skin tone even if it is not readily apparent. In pediatric patients, it is also appropriate to include parents in this conversation.
 

Consider the parent’s perspective

“When you are taking care of a child or adolescent, the patient is likely to be concerned about changes in pigmentation, but it is important to remember that the adult in the room might have had their own journey with brown skin and has dealt with the burden of pigment changes,” Dr. Heath said.

For the parent, the pigmentation changes, rather than the inflammation, might be the governing issue and the reason that he or she brought the child to the clinician. Dr. Heath suggested that it is important for caregivers to explicitly recognize their concern, explain that addressing the pigmentary changes is part of the treatment plan, and to create realistic expectations about how long pigmentary changes will take to resolve.

As an example, Dr. Heath recounted a difficult case of a Black infant with disseminated hyperpigmentation and features that did not preclude pathology other than AD. Dr. Heath created a multifaceted treatment plan to address the inflammation in distinct areas of the body that included low-strength topical steroids for the face, stronger steroids for the body, and advice on scalp and skin care.

“I thought this was a great treatment plan out of the gate – I was covering all of the things on my differential list – I thought that the mom would be thinking, this doctor is amazing,” Dr. Heath said.
 

Pigmentary changes are a priority

However, that was not what the patient’s mother was thinking. Having failed to explicitly recognize her concern about the pigmentation changes and how the treatment would address this issue, the mother was disappointed.

“She had one question: Will my baby ever be one color? That was her main concern,” said Dr. Heath, indicating that other clinicians seeing inflammatory diseases in children with darker skin types can learn from her experience.

“Really, you have to acknowledge that the condition you are treating is causing the pigmentation change, and we do see that and that we have a treatment plan in place,” she said.

Because of differences in how inflammatory skin diseases present in darker skin types, there is plenty of room for a delayed diagnosis for clinicians who do not see many of these patients, according to Dr. Heath. Follicular eczema, which is common in skin of color, often presents with pruritus but differences in the appearance of the underlying disease can threaten a delay in diagnosis.

In cases of follicular eczema with itch in darker skin, the bumps look and feel like goose bumps, which “means that the eczema is really active and inflamed,” Dr. Heath said. When the skin becomes smooth and the itch dissipates, “you know that they are under great control.”

Psoriasis is often missed in children with darker skin types based on the misperception that it is rare. Although it is true that it is less common in Blacks than Whites, it is not rare, according to Dr. Heath. In inspecting the telltale erythematous plaque–like lesions, clinicians might start to consider alternative diagnoses when they do not detect the same erythematous appearance, but the reddish tone is often concealed in darker skin.

She said that predominant involvement in the head and neck and diaper area is often more common in children of color and that nail or scalp involvement, when present, is often a clue that psoriasis is the diagnosis.

Again, because many clinicians do not think immediately of psoriasis in darker skin children with lesions in the scalp, Dr. Heath advised this is another reason to include psoriasis in the differential diagnosis.

“If you have a child that has failed multiple courses of treatment for tinea capitis and they have well-demarcated plaques, it’s time to really start to think about pediatric psoriasis,” she said.
 

Restoring skin tone can be the priority

Asked to comment on Dr. Heath’s advice about the importance of acknowledging pigmentary changes associated with inflammatory skin diseases in patients of color, Jenna Lester, MD, the founding director of the Skin of Color Clinic at the University of California, San Francisco, called it an “often unspoken concern of patients.”

“Pigmentary changes that occur secondary to an inflammatory condition should be addressed and treated alongside the inciting condition,” she agreed.

Even if changes in skin color or skin tone are not a specific complaint of the patients, Dr. Lester also urged clinicians to raise the topic. If change in skin pigmentation is part of the clinical picture, this should be targeted in the treatment plan.

“In acne, for example, often times I find that patients are as worried about postinflammatory hyperpigmentation as they are about their acne,” she said, reiterating the advice provided by Dr. Heath.

Dr. Heath has financial relationships with Arcutis, Janssen, Johnson & Johnson, Lilly, and Regeneron. Dr. Lester reported no potential conflicts of interest.

NEW YORK – Many inflammatory diseases, such as psoriasis and atopic dermatitis (AD), can present differently in patients with darker skin types, but it is the pigmentary changes themselves that are often a dominant concern for parents, according to pediatric dermatologist Candrice R. Heath, MD.

Skin diseases pose a greater risk of both hyper- and hypopigmentation in patients with darker skin types, but the fear and concern that this raises for permanent disfigurement is not limited to Blacks, Dr. Heath, assistant professor of pediatric dermatology at Temple University, Philadelphia, said at the Skin of Color Update 2023.

“Culturally, pigmentation changes can be huge. For people of Indian descent, for example, pigmentary changes like light spots on the skin might be an obstacle to marriage, so it can really be life changing,” she added.

In patients with darker skin tones presenting with an inflammatory skin disease, such as AD or psoriasis, Dr. Heath advised asking specifically about change in skin tone even if it is not readily apparent. In pediatric patients, it is also appropriate to include parents in this conversation.
 

Consider the parent’s perspective

“When you are taking care of a child or adolescent, the patient is likely to be concerned about changes in pigmentation, but it is important to remember that the adult in the room might have had their own journey with brown skin and has dealt with the burden of pigment changes,” Dr. Heath said.

For the parent, the pigmentation changes, rather than the inflammation, might be the governing issue and the reason that he or she brought the child to the clinician. Dr. Heath suggested that it is important for caregivers to explicitly recognize their concern, explain that addressing the pigmentary changes is part of the treatment plan, and to create realistic expectations about how long pigmentary changes will take to resolve.

As an example, Dr. Heath recounted a difficult case of a Black infant with disseminated hyperpigmentation and features that did not preclude pathology other than AD. Dr. Heath created a multifaceted treatment plan to address the inflammation in distinct areas of the body that included low-strength topical steroids for the face, stronger steroids for the body, and advice on scalp and skin care.

“I thought this was a great treatment plan out of the gate – I was covering all of the things on my differential list – I thought that the mom would be thinking, this doctor is amazing,” Dr. Heath said.
 

Pigmentary changes are a priority

However, that was not what the patient’s mother was thinking. Having failed to explicitly recognize her concern about the pigmentation changes and how the treatment would address this issue, the mother was disappointed.

“She had one question: Will my baby ever be one color? That was her main concern,” said Dr. Heath, indicating that other clinicians seeing inflammatory diseases in children with darker skin types can learn from her experience.

“Really, you have to acknowledge that the condition you are treating is causing the pigmentation change, and we do see that and that we have a treatment plan in place,” she said.

Because of differences in how inflammatory skin diseases present in darker skin types, there is plenty of room for a delayed diagnosis for clinicians who do not see many of these patients, according to Dr. Heath. Follicular eczema, which is common in skin of color, often presents with pruritus but differences in the appearance of the underlying disease can threaten a delay in diagnosis.

In cases of follicular eczema with itch in darker skin, the bumps look and feel like goose bumps, which “means that the eczema is really active and inflamed,” Dr. Heath said. When the skin becomes smooth and the itch dissipates, “you know that they are under great control.”

Psoriasis is often missed in children with darker skin types based on the misperception that it is rare. Although it is true that it is less common in Blacks than Whites, it is not rare, according to Dr. Heath. In inspecting the telltale erythematous plaque–like lesions, clinicians might start to consider alternative diagnoses when they do not detect the same erythematous appearance, but the reddish tone is often concealed in darker skin.

She said that predominant involvement in the head and neck and diaper area is often more common in children of color and that nail or scalp involvement, when present, is often a clue that psoriasis is the diagnosis.

Again, because many clinicians do not think immediately of psoriasis in darker skin children with lesions in the scalp, Dr. Heath advised this is another reason to include psoriasis in the differential diagnosis.

“If you have a child that has failed multiple courses of treatment for tinea capitis and they have well-demarcated plaques, it’s time to really start to think about pediatric psoriasis,” she said.
 

Restoring skin tone can be the priority

Asked to comment on Dr. Heath’s advice about the importance of acknowledging pigmentary changes associated with inflammatory skin diseases in patients of color, Jenna Lester, MD, the founding director of the Skin of Color Clinic at the University of California, San Francisco, called it an “often unspoken concern of patients.”

“Pigmentary changes that occur secondary to an inflammatory condition should be addressed and treated alongside the inciting condition,” she agreed.

Even if changes in skin color or skin tone are not a specific complaint of the patients, Dr. Lester also urged clinicians to raise the topic. If change in skin pigmentation is part of the clinical picture, this should be targeted in the treatment plan.

“In acne, for example, often times I find that patients are as worried about postinflammatory hyperpigmentation as they are about their acne,” she said, reiterating the advice provided by Dr. Heath.

Dr. Heath has financial relationships with Arcutis, Janssen, Johnson & Johnson, Lilly, and Regeneron. Dr. Lester reported no potential conflicts of interest.

To the Editor:

Hidradenitis suppurativa (HS) is a chronic inflammatory condition of the pilosebaceous unit that occurs in concert with elevations of various cytokines, including tumor necrosis factor α (TNF-α), IL-1β, IL-10, and IL-17.^1,2 Adalimumab is a TNF-α inhibitor approved by the US Food and Drug Administration for the treatment of HS. Although TNF-α inhibitors are effective for many immune-mediated inflammatory disorders, paradoxical drug reactions have been reported following treatment with these agents.^3-6 True paradoxical drug reactions likely are immune mediated and directly lead to new onset of a pathologic condition that would otherwise respond to that drug. For example, there are reports of rheumatoid arthritis patients who were treated with a TNF-α inhibitor and developed psoriatic skin lesions.^3,6 Paradoxical drug reactions also have been reported with acute-onset inflammatory bowel disease and HS or less commonly pyoderma gangrenosum (PG), uveitis, granulomatous reactions, and vasculitis.^4,5 We present the case of a patient with HS who was treated with a TNF-α inhibitor and developed 2 distinct paradoxical drug reactions. We also provide an overview of paradoxical drug reactions associated with TNF-α inhibitors.

A 38-year-old woman developed a painful “boil” on the right leg that was previously treated in the emergency department with incision and drainage as well as oral clindamycin for 7 days, but the lesion spread and continued to worsen. She had a history of HS in the axillae and groin region that had been present since 12 years of age. The condition was poorly controlled despite multiple courses of oral antibiotics and surgical resections. An oral contraceptive also was attempted, but the patient discontinued treatment when liver enzyme levels became elevated. The patient had no other notable medical history, including skin disease. There was a family history of HS in her father and a sibling. Seeking more effective treatment, the patient was offered adalimumab approximately 4 months prior to clinical presentation and agreed to start a course of the drug. She received a loading dose of 160 mg on day 1 and 80 mg on day 15 followed by a maintenance dosage of 40 mg weekly. She experienced improvement in HS symptoms after 3 months on adalimumab; however, she developed scaly pruritic patches on the scalp, arms, and legs that were consistent with psoriasis. Because of the absence of a personal or family history of psoriasis, the patient was informed of the probability of paradoxical psoriasis resulting from adalimumab. She elected to continue adalimumab because of the improvement in HS symptoms, and the psoriatic lesions were mild and adequately controlled with a topical steroid.

At the current presentation 1 month later, physical examination revealed a large indurated and ulcerated area with jagged edges at the incision and drainage site (Figure 1). Pyoderma gangrenosum was clinically suspected; a biopsy was performed, and the patient was started on oral prednisone. At 2-week follow-up, the ulcer was found to be rapidly resolving with prednisone and healing with cribriform scarring (Figure 2). Histopathology revealed an undermining neutrophilic inflammatory process that was consistent with PG. A diagnosis of PG was made based on previously published criteria⁷ and the following major/minor criteria in the patient: pathology; absence of infection on histologic analysis; history of pathergy related to worsening ulceration at the site of incision and drainage of the initial boil; clinical findings of an ulcer with peripheral violaceous erythema; undermined borders and tenderness at the site; and rapid resolution of the ulcer with prednisone.

Cessation of adalimumab gradually led to clearance of both psoriasiform lesions and PG; however, HS lesions persisted. At 2-month follow-up, the patient remained clear of new psoriatic and PG lesions. Alternative treatment options for HS, including isotretinoin and other biologic agents, were discussed with the patient. She was subsequently lost to follow-up.

Although the precise pathogenesis of HS is unclear, both genetic abnormalities of the pilosebaceous unit and a dysregulated immune reaction appear to lead to the clinical characteristics of chronic inflammation and scarring seen in HS. A key effector appears to be helper T-cell (T_H17) lymphocyte activation, with increased secretion of TNF-α, IL-1β, and IL-17.^1,2 In turn, IL-17 induces higher expression of TNF-α, leading to a persistent cycle of inflammation. Peripheral recruitment of IL-17–producing neutrophils also may contribute to chronic inflammation.⁸

Adalimumab is the only US Food and Drug Administration–approved biologic indicated for the treatment of HS. Our patient initially responded to adalimumab with improvement of HS; however, treatment had to be discontinued because of the unusual occurrence of 2 distinct paradoxical reactions in a short span of time. Psoriasis and PG are both considered true paradoxical reactions because primary occurrences of both diseases usually are responsive to treatment with adalimumab.

Tumor necrosis factor α inhibitor–induced psoriasis arises de novo and is estimated to occur in approximately 5% of patients with rheumatoid arthritis.^3,6 Palmoplantar pustular psoriasiform reactions are the most common form of paradoxical psoriasis. Topical medications can be used to treat skin lesions, but systemic treatment is required in many cases. Switching to an alternate class of a biologic, such as an IL-17, IL-12/23, or IL-23 inhibitor, can improve the skin reaction; however, such treatment is inconsistently successful, and paradoxical drug reactions also have been seen with these other classes of biologics.^4,9

Recent studies support distinct immune causes for classical and paradoxical psoriasis. In classical psoriasis, plasmacytoid dendritic cells (pDCs) produce IFN-α, which stimulates conventional dendritic cells to produce TNF-α. However, TNF-α matures both pDCs and conventional dendritic cells; upon maturation, both types of dendritic cells lose the ability to produce IFN-α, thus allowing TNF-α to become dominant.¹⁰ The blockade of TNF-α prevents pDC maturation, leading to uninhibited IFN-α, which appears to drive inflammation in paradoxical psoriasis. In classical psoriasis, oligoclonal dermal CD4⁺ T cells and epidermal CD8⁺ T cells remain, even in resolved skin lesions, and can cause disease recurrence through reactivation of skin-resident memory T cells.¹¹ No relapse of paradoxical psoriasis occurs with discontinuation of anti-TNF-α therapy, which supports the notion of an absence of memory T cells.

The incidence of paradoxical psoriasis in patients receiving a TNF-α inhibitor for HS is unclear.¹² There are case series in which patients who had concurrent psoriasis and HS were successfully treated with a TNF-α inhibitor.¹³ A recently recognized condition—PASH syndrome—encompasses the clinical triad of PG, acne, and HS.¹⁰

Our patient had no history of acne or PG, only a long-standing history of HS. New-onset PG occurred only after a TNF-α inhibitor was initiated. Notably, PASH syndrome has been successfully treated with TNF-α inhibitors, highlighting the shared inflammatory etiology of HS and PG.¹⁴ In patients with concurrent PG and HS, TNF-α inhibitors were more effective for treating PG than for HS.

Pyoderma gangrenosum is an inflammatory disorder that often occurs concomitantly with other conditions, such as inflammatory bowel disease. The exact underlying cause of PG is unclear, but there appears to be both neutrophil and T-cell dysfunction in PG, with excess inflammatory cytokine production (eg, IL-1β, TNF-α, IL-17).¹⁵

The mainstay of treatment of PG is systemic corticosteroids and immunosuppressives, such as cyclosporine. Tumor necrosis factor α inhibitors as well as other interleukin inhibitors are increasingly utilized as potential therapeutic alternatives for PG.^16,17

Unlike paradoxical psoriasis, the underlying cause of paradoxical PG is unclear.^18,19 A similar mechanism may be postulated whereby inhibition of TNF-α leads to excessive activation of alternative inflammatory pathways that result in paradoxical PG. In one study, the prevalence of PG among 68,232 patients with HS was 0.18% compared with 0.01% among those without HS; therefore, patients with HS appear to be more predisposed to PG.²⁰

This case illustrates the complex, often conflicting effects of cytokine inhibition in the paradoxical elicitation of alternative inflammatory disorders as an unintended consequence of the initial cytokine blockade. It is likely that genetic predisposition allows for paradoxical reactions in some patients when there is predominant inhibition of one cytokine in the inflammatory pathway. In rare cases, multiple paradoxical reactions are possible.

To the Editor:

Hidradenitis suppurativa (HS) is a chronic inflammatory condition of the pilosebaceous unit that occurs in concert with elevations of various cytokines, including tumor necrosis factor α (TNF-α), IL-1β, IL-10, and IL-17.^1,2 Adalimumab is a TNF-α inhibitor approved by the US Food and Drug Administration for the treatment of HS. Although TNF-α inhibitors are effective for many immune-mediated inflammatory disorders, paradoxical drug reactions have been reported following treatment with these agents.^3-6 True paradoxical drug reactions likely are immune mediated and directly lead to new onset of a pathologic condition that would otherwise respond to that drug. For example, there are reports of rheumatoid arthritis patients who were treated with a TNF-α inhibitor and developed psoriatic skin lesions.^3,6 Paradoxical drug reactions also have been reported with acute-onset inflammatory bowel disease and HS or less commonly pyoderma gangrenosum (PG), uveitis, granulomatous reactions, and vasculitis.^4,5 We present the case of a patient with HS who was treated with a TNF-α inhibitor and developed 2 distinct paradoxical drug reactions. We also provide an overview of paradoxical drug reactions associated with TNF-α inhibitors.

A 38-year-old woman developed a painful “boil” on the right leg that was previously treated in the emergency department with incision and drainage as well as oral clindamycin for 7 days, but the lesion spread and continued to worsen. She had a history of HS in the axillae and groin region that had been present since 12 years of age. The condition was poorly controlled despite multiple courses of oral antibiotics and surgical resections. An oral contraceptive also was attempted, but the patient discontinued treatment when liver enzyme levels became elevated. The patient had no other notable medical history, including skin disease. There was a family history of HS in her father and a sibling. Seeking more effective treatment, the patient was offered adalimumab approximately 4 months prior to clinical presentation and agreed to start a course of the drug. She received a loading dose of 160 mg on day 1 and 80 mg on day 15 followed by a maintenance dosage of 40 mg weekly. She experienced improvement in HS symptoms after 3 months on adalimumab; however, she developed scaly pruritic patches on the scalp, arms, and legs that were consistent with psoriasis. Because of the absence of a personal or family history of psoriasis, the patient was informed of the probability of paradoxical psoriasis resulting from adalimumab. She elected to continue adalimumab because of the improvement in HS symptoms, and the psoriatic lesions were mild and adequately controlled with a topical steroid.

At the current presentation 1 month later, physical examination revealed a large indurated and ulcerated area with jagged edges at the incision and drainage site (Figure 1). Pyoderma gangrenosum was clinically suspected; a biopsy was performed, and the patient was started on oral prednisone. At 2-week follow-up, the ulcer was found to be rapidly resolving with prednisone and healing with cribriform scarring (Figure 2). Histopathology revealed an undermining neutrophilic inflammatory process that was consistent with PG. A diagnosis of PG was made based on previously published criteria⁷ and the following major/minor criteria in the patient: pathology; absence of infection on histologic analysis; history of pathergy related to worsening ulceration at the site of incision and drainage of the initial boil; clinical findings of an ulcer with peripheral violaceous erythema; undermined borders and tenderness at the site; and rapid resolution of the ulcer with prednisone.

Cessation of adalimumab gradually led to clearance of both psoriasiform lesions and PG; however, HS lesions persisted. At 2-month follow-up, the patient remained clear of new psoriatic and PG lesions. Alternative treatment options for HS, including isotretinoin and other biologic agents, were discussed with the patient. She was subsequently lost to follow-up.

Although the precise pathogenesis of HS is unclear, both genetic abnormalities of the pilosebaceous unit and a dysregulated immune reaction appear to lead to the clinical characteristics of chronic inflammation and scarring seen in HS. A key effector appears to be helper T-cell (T_H17) lymphocyte activation, with increased secretion of TNF-α, IL-1β, and IL-17.^1,2 In turn, IL-17 induces higher expression of TNF-α, leading to a persistent cycle of inflammation. Peripheral recruitment of IL-17–producing neutrophils also may contribute to chronic inflammation.⁸

Adalimumab is the only US Food and Drug Administration–approved biologic indicated for the treatment of HS. Our patient initially responded to adalimumab with improvement of HS; however, treatment had to be discontinued because of the unusual occurrence of 2 distinct paradoxical reactions in a short span of time. Psoriasis and PG are both considered true paradoxical reactions because primary occurrences of both diseases usually are responsive to treatment with adalimumab.

Tumor necrosis factor α inhibitor–induced psoriasis arises de novo and is estimated to occur in approximately 5% of patients with rheumatoid arthritis.^3,6 Palmoplantar pustular psoriasiform reactions are the most common form of paradoxical psoriasis. Topical medications can be used to treat skin lesions, but systemic treatment is required in many cases. Switching to an alternate class of a biologic, such as an IL-17, IL-12/23, or IL-23 inhibitor, can improve the skin reaction; however, such treatment is inconsistently successful, and paradoxical drug reactions also have been seen with these other classes of biologics.^4,9

Recent studies support distinct immune causes for classical and paradoxical psoriasis. In classical psoriasis, plasmacytoid dendritic cells (pDCs) produce IFN-α, which stimulates conventional dendritic cells to produce TNF-α. However, TNF-α matures both pDCs and conventional dendritic cells; upon maturation, both types of dendritic cells lose the ability to produce IFN-α, thus allowing TNF-α to become dominant.¹⁰ The blockade of TNF-α prevents pDC maturation, leading to uninhibited IFN-α, which appears to drive inflammation in paradoxical psoriasis. In classical psoriasis, oligoclonal dermal CD4⁺ T cells and epidermal CD8⁺ T cells remain, even in resolved skin lesions, and can cause disease recurrence through reactivation of skin-resident memory T cells.¹¹ No relapse of paradoxical psoriasis occurs with discontinuation of anti-TNF-α therapy, which supports the notion of an absence of memory T cells.

The incidence of paradoxical psoriasis in patients receiving a TNF-α inhibitor for HS is unclear.¹² There are case series in which patients who had concurrent psoriasis and HS were successfully treated with a TNF-α inhibitor.¹³ A recently recognized condition—PASH syndrome—encompasses the clinical triad of PG, acne, and HS.¹⁰

Our patient had no history of acne or PG, only a long-standing history of HS. New-onset PG occurred only after a TNF-α inhibitor was initiated. Notably, PASH syndrome has been successfully treated with TNF-α inhibitors, highlighting the shared inflammatory etiology of HS and PG.¹⁴ In patients with concurrent PG and HS, TNF-α inhibitors were more effective for treating PG than for HS.

Pyoderma gangrenosum is an inflammatory disorder that often occurs concomitantly with other conditions, such as inflammatory bowel disease. The exact underlying cause of PG is unclear, but there appears to be both neutrophil and T-cell dysfunction in PG, with excess inflammatory cytokine production (eg, IL-1β, TNF-α, IL-17).¹⁵

The mainstay of treatment of PG is systemic corticosteroids and immunosuppressives, such as cyclosporine. Tumor necrosis factor α inhibitors as well as other interleukin inhibitors are increasingly utilized as potential therapeutic alternatives for PG.^16,17

Unlike paradoxical psoriasis, the underlying cause of paradoxical PG is unclear.^18,19 A similar mechanism may be postulated whereby inhibition of TNF-α leads to excessive activation of alternative inflammatory pathways that result in paradoxical PG. In one study, the prevalence of PG among 68,232 patients with HS was 0.18% compared with 0.01% among those without HS; therefore, patients with HS appear to be more predisposed to PG.²⁰

This case illustrates the complex, often conflicting effects of cytokine inhibition in the paradoxical elicitation of alternative inflammatory disorders as an unintended consequence of the initial cytokine blockade. It is likely that genetic predisposition allows for paradoxical reactions in some patients when there is predominant inhibition of one cytokine in the inflammatory pathway. In rare cases, multiple paradoxical reactions are possible.

To the Editor:

Hidradenitis suppurativa (HS) is a chronic inflammatory condition of the pilosebaceous unit that occurs in concert with elevations of various cytokines, including tumor necrosis factor α (TNF-α), IL-1β, IL-10, and IL-17.^1,2 Adalimumab is a TNF-α inhibitor approved by the US Food and Drug Administration for the treatment of HS. Although TNF-α inhibitors are effective for many immune-mediated inflammatory disorders, paradoxical drug reactions have been reported following treatment with these agents.^3-6 True paradoxical drug reactions likely are immune mediated and directly lead to new onset of a pathologic condition that would otherwise respond to that drug. For example, there are reports of rheumatoid arthritis patients who were treated with a TNF-α inhibitor and developed psoriatic skin lesions.^3,6 Paradoxical drug reactions also have been reported with acute-onset inflammatory bowel disease and HS or less commonly pyoderma gangrenosum (PG), uveitis, granulomatous reactions, and vasculitis.^4,5 We present the case of a patient with HS who was treated with a TNF-α inhibitor and developed 2 distinct paradoxical drug reactions. We also provide an overview of paradoxical drug reactions associated with TNF-α inhibitors.

A 38-year-old woman developed a painful “boil” on the right leg that was previously treated in the emergency department with incision and drainage as well as oral clindamycin for 7 days, but the lesion spread and continued to worsen. She had a history of HS in the axillae and groin region that had been present since 12 years of age. The condition was poorly controlled despite multiple courses of oral antibiotics and surgical resections. An oral contraceptive also was attempted, but the patient discontinued treatment when liver enzyme levels became elevated. The patient had no other notable medical history, including skin disease. There was a family history of HS in her father and a sibling. Seeking more effective treatment, the patient was offered adalimumab approximately 4 months prior to clinical presentation and agreed to start a course of the drug. She received a loading dose of 160 mg on day 1 and 80 mg on day 15 followed by a maintenance dosage of 40 mg weekly. She experienced improvement in HS symptoms after 3 months on adalimumab; however, she developed scaly pruritic patches on the scalp, arms, and legs that were consistent with psoriasis. Because of the absence of a personal or family history of psoriasis, the patient was informed of the probability of paradoxical psoriasis resulting from adalimumab. She elected to continue adalimumab because of the improvement in HS symptoms, and the psoriatic lesions were mild and adequately controlled with a topical steroid.

At the current presentation 1 month later, physical examination revealed a large indurated and ulcerated area with jagged edges at the incision and drainage site (Figure 1). Pyoderma gangrenosum was clinically suspected; a biopsy was performed, and the patient was started on oral prednisone. At 2-week follow-up, the ulcer was found to be rapidly resolving with prednisone and healing with cribriform scarring (Figure 2). Histopathology revealed an undermining neutrophilic inflammatory process that was consistent with PG. A diagnosis of PG was made based on previously published criteria⁷ and the following major/minor criteria in the patient: pathology; absence of infection on histologic analysis; history of pathergy related to worsening ulceration at the site of incision and drainage of the initial boil; clinical findings of an ulcer with peripheral violaceous erythema; undermined borders and tenderness at the site; and rapid resolution of the ulcer with prednisone.

Cessation of adalimumab gradually led to clearance of both psoriasiform lesions and PG; however, HS lesions persisted. At 2-month follow-up, the patient remained clear of new psoriatic and PG lesions. Alternative treatment options for HS, including isotretinoin and other biologic agents, were discussed with the patient. She was subsequently lost to follow-up.

Although the precise pathogenesis of HS is unclear, both genetic abnormalities of the pilosebaceous unit and a dysregulated immune reaction appear to lead to the clinical characteristics of chronic inflammation and scarring seen in HS. A key effector appears to be helper T-cell (T_H17) lymphocyte activation, with increased secretion of TNF-α, IL-1β, and IL-17.^1,2 In turn, IL-17 induces higher expression of TNF-α, leading to a persistent cycle of inflammation. Peripheral recruitment of IL-17–producing neutrophils also may contribute to chronic inflammation.⁸

Adalimumab is the only US Food and Drug Administration–approved biologic indicated for the treatment of HS. Our patient initially responded to adalimumab with improvement of HS; however, treatment had to be discontinued because of the unusual occurrence of 2 distinct paradoxical reactions in a short span of time. Psoriasis and PG are both considered true paradoxical reactions because primary occurrences of both diseases usually are responsive to treatment with adalimumab.

Tumor necrosis factor α inhibitor–induced psoriasis arises de novo and is estimated to occur in approximately 5% of patients with rheumatoid arthritis.^3,6 Palmoplantar pustular psoriasiform reactions are the most common form of paradoxical psoriasis. Topical medications can be used to treat skin lesions, but systemic treatment is required in many cases. Switching to an alternate class of a biologic, such as an IL-17, IL-12/23, or IL-23 inhibitor, can improve the skin reaction; however, such treatment is inconsistently successful, and paradoxical drug reactions also have been seen with these other classes of biologics.^4,9

Recent studies support distinct immune causes for classical and paradoxical psoriasis. In classical psoriasis, plasmacytoid dendritic cells (pDCs) produce IFN-α, which stimulates conventional dendritic cells to produce TNF-α. However, TNF-α matures both pDCs and conventional dendritic cells; upon maturation, both types of dendritic cells lose the ability to produce IFN-α, thus allowing TNF-α to become dominant.¹⁰ The blockade of TNF-α prevents pDC maturation, leading to uninhibited IFN-α, which appears to drive inflammation in paradoxical psoriasis. In classical psoriasis, oligoclonal dermal CD4⁺ T cells and epidermal CD8⁺ T cells remain, even in resolved skin lesions, and can cause disease recurrence through reactivation of skin-resident memory T cells.¹¹ No relapse of paradoxical psoriasis occurs with discontinuation of anti-TNF-α therapy, which supports the notion of an absence of memory T cells.

The incidence of paradoxical psoriasis in patients receiving a TNF-α inhibitor for HS is unclear.¹² There are case series in which patients who had concurrent psoriasis and HS were successfully treated with a TNF-α inhibitor.¹³ A recently recognized condition—PASH syndrome—encompasses the clinical triad of PG, acne, and HS.¹⁰

Our patient had no history of acne or PG, only a long-standing history of HS. New-onset PG occurred only after a TNF-α inhibitor was initiated. Notably, PASH syndrome has been successfully treated with TNF-α inhibitors, highlighting the shared inflammatory etiology of HS and PG.¹⁴ In patients with concurrent PG and HS, TNF-α inhibitors were more effective for treating PG than for HS.

Pyoderma gangrenosum is an inflammatory disorder that often occurs concomitantly with other conditions, such as inflammatory bowel disease. The exact underlying cause of PG is unclear, but there appears to be both neutrophil and T-cell dysfunction in PG, with excess inflammatory cytokine production (eg, IL-1β, TNF-α, IL-17).¹⁵

The mainstay of treatment of PG is systemic corticosteroids and immunosuppressives, such as cyclosporine. Tumor necrosis factor α inhibitors as well as other interleukin inhibitors are increasingly utilized as potential therapeutic alternatives for PG.^16,17

Unlike paradoxical psoriasis, the underlying cause of paradoxical PG is unclear.^18,19 A similar mechanism may be postulated whereby inhibition of TNF-α leads to excessive activation of alternative inflammatory pathways that result in paradoxical PG. In one study, the prevalence of PG among 68,232 patients with HS was 0.18% compared with 0.01% among those without HS; therefore, patients with HS appear to be more predisposed to PG.²⁰

This case illustrates the complex, often conflicting effects of cytokine inhibition in the paradoxical elicitation of alternative inflammatory disorders as an unintended consequence of the initial cytokine blockade. It is likely that genetic predisposition allows for paradoxical reactions in some patients when there is predominant inhibition of one cytokine in the inflammatory pathway. In rare cases, multiple paradoxical reactions are possible.

SAN DIEGO – Continuing a tumor necrosis factor inhibitor (TNFi) during pregnancy does not increase risk of worse fetal or obstetric outcomes, according to new research presented at the annual meeting of the American College of Rheumatology.

Patients who continued a TNFi also had fewer severe infections requiring hospitalization, compared with those who stopped taking the medication during their pregnancy.

Lucy Hicks/Medscape Medical News

“The main message is that patients continuing were not doing worse than the patients stopping. It’s an important clinical message for rheumatologists who are not really confident in dealing with these drugs during pregnancy,” said Anna Moltó, MD, PhD, a rheumatologist at Cochin Hospital, Paris, who led the research. “It adds to the data that it seems to be safe,” she added in an interview.

Previous research, largely from pregnant patients with inflammatory bowel disease, suggests that taking a TNFi during pregnancy is safe, and 2020 ACR guidelines conditionally recommend continuing therapy prior to and during pregnancy; however, many people still stop taking the drugs during pregnancy for fear of potentially harming the fetus.

To better understand how TNFi use affected pregnancy outcomes, Dr. Moltó and colleagues analyzed data from a French nationwide health insurance database to identify adult women with chronic rheumatic inflammatory disease. All women included in the cohort had a singleton pregnancy between 2008 and 2017 and were taking a TNFi upon pregnancy diagnosis.

Patients who restarted TNFi after initially pausing because of pregnancy were included in the continuation group.

Researchers identified more than 2,000 pregnancies, including 1,503 in individuals with spondyloarthritis and 579 individuals with rheumatoid arthritis. Patients were, on average, 31 years old and were diagnosed with a rheumatic disease 4 years prior to their pregnancy.

About 72% (n = 1,497) discontinued TNFi after learning they were pregnant, and 584 individuals continued treatment. Dr. Moltó noted that data from more recent years might have captured lower discontinuation rates among pregnant individuals, but those data were not available for the study.

There was no difference in unfavorable obstetrical or infant outcomes, including spontaneous abortion, preeclampsia, gestational diabetes, major congenital malformation, and severe infection of the infant requiring hospitalization. Somewhat surprisingly, the data showed that women who discontinued a TNFi were more likely to be hospitalized for infection either during their pregnancy or up to 6 weeks after delivery, compared with those who continued therapy (1.3% vs. 0.2%, respectively).

Dr. Moltó is currently looking into what could be behind this counterintuitive result, but she hypothesizes that patients who had stopped TNFi may have been taking more glucocorticoids.

“At our institution, there is generally a comfort level with continuing TNF inhibitors during pregnancy, at least until about 36 weeks,” said Sara K. Tedeschi, MD, MPH, a rheumatologist at Brigham and Women’s Hospital and assistant professor of medicine at Harvard Medical School, both in Boston. Sometimes, there is concern for risk of infection to the infant, depending on the type of TNFi being used, she added during a press conference.

“I think that these are really informative and supportive data to let women know that they probably have a really good chance of doing very well during the pregnancy if they continue” their TNFi, said Dr. Tedeschi, who was not involved with the study.
 

TNF discontinuation on the decline

In a related study, researchers at McGill University, Montreal, found that TNFi discontinuation prior to pregnancy had decreased over time in individuals with chronic inflammatory diseases.

Using a database of U.S. insurance claims, they identified 3,372 women with RA, ankylosing spondylitis (AS), psoriasis/psoriatic arthritis (PsA), and/or inflammatory bowel disease (IBD) who previously used a TNFi and gave birth between 2011 and 2019. A patient was considered to have used a TNFi if she had filled a prescription or had an infusion procedure insurance claim within 12 weeks before the gestational period or anytime during pregnancy. Researchers did not have time-specific data to account for women who stopped treatment at pregnancy diagnosis.

Nearly half (47%) of all identified pregnancies were in individuals with IBD, and the rest included patients with RA (24%), psoriasis or PsA (16%), AS (3%), or more than one diagnosis (10%).

In total, 14% of women discontinued TNFi use in the 12 weeks before becoming pregnant and did not restart. From 2011 to 2013, 19% of patients stopped their TNFi, but this proportion decreased overtime, with 10% of patients stopping therapy from 2017 to 2019 (P < .0001).

Lucy Hicks/Medscape Medical News

This decline “possibly reflects the increase in real-world evidence about the safety of TNFi in pregnancy. That research, in turn, led to new guidelines recommending the continuation of TNFi during pregnancy,” first author Leah Flatman, a PhD candidate in epidemiology at McGill, said in an interview. “I think we can see this potentially as good news.”

More patients with RA, psoriasis/PsA, and AS discontinued TNFi therapy prior to conception (23%-25%), compared with those with IBD (5%).

Ms. Flatman noted that her study and Moltó’s study complement each other by providing data on individuals stopping TNFi prior to conception versus those stopping treatment after pregnancy diagnosis.

“These findings demonstrate that continuing TNFi during pregnancy appears not to be associated with an increase in adverse obstetrical or infant outcomes,” Ms. Flatman said of Dr. Moltó’s study. “As guidelines currently recommend continuing TNFi, studies like this help demonstrate that the guideline changes do not appear to be associated with an increase in adverse events.”

Dr. Moltó and Ms. Flatman disclosed no relevant financial relationships. Dr. Tedeschi has worked as a consultant for Novartis.

A version of this article appeared on Medscape.com.

SAN DIEGO – Continuing a tumor necrosis factor inhibitor (TNFi) during pregnancy does not increase risk of worse fetal or obstetric outcomes, according to new research presented at the annual meeting of the American College of Rheumatology.

Patients who continued a TNFi also had fewer severe infections requiring hospitalization, compared with those who stopped taking the medication during their pregnancy.

Lucy Hicks/Medscape Medical News

“The main message is that patients continuing were not doing worse than the patients stopping. It’s an important clinical message for rheumatologists who are not really confident in dealing with these drugs during pregnancy,” said Anna Moltó, MD, PhD, a rheumatologist at Cochin Hospital, Paris, who led the research. “It adds to the data that it seems to be safe,” she added in an interview.

Previous research, largely from pregnant patients with inflammatory bowel disease, suggests that taking a TNFi during pregnancy is safe, and 2020 ACR guidelines conditionally recommend continuing therapy prior to and during pregnancy; however, many people still stop taking the drugs during pregnancy for fear of potentially harming the fetus.

To better understand how TNFi use affected pregnancy outcomes, Dr. Moltó and colleagues analyzed data from a French nationwide health insurance database to identify adult women with chronic rheumatic inflammatory disease. All women included in the cohort had a singleton pregnancy between 2008 and 2017 and were taking a TNFi upon pregnancy diagnosis.

Patients who restarted TNFi after initially pausing because of pregnancy were included in the continuation group.

Researchers identified more than 2,000 pregnancies, including 1,503 in individuals with spondyloarthritis and 579 individuals with rheumatoid arthritis. Patients were, on average, 31 years old and were diagnosed with a rheumatic disease 4 years prior to their pregnancy.

About 72% (n = 1,497) discontinued TNFi after learning they were pregnant, and 584 individuals continued treatment. Dr. Moltó noted that data from more recent years might have captured lower discontinuation rates among pregnant individuals, but those data were not available for the study.

There was no difference in unfavorable obstetrical or infant outcomes, including spontaneous abortion, preeclampsia, gestational diabetes, major congenital malformation, and severe infection of the infant requiring hospitalization. Somewhat surprisingly, the data showed that women who discontinued a TNFi were more likely to be hospitalized for infection either during their pregnancy or up to 6 weeks after delivery, compared with those who continued therapy (1.3% vs. 0.2%, respectively).

Dr. Moltó is currently looking into what could be behind this counterintuitive result, but she hypothesizes that patients who had stopped TNFi may have been taking more glucocorticoids.

“At our institution, there is generally a comfort level with continuing TNF inhibitors during pregnancy, at least until about 36 weeks,” said Sara K. Tedeschi, MD, MPH, a rheumatologist at Brigham and Women’s Hospital and assistant professor of medicine at Harvard Medical School, both in Boston. Sometimes, there is concern for risk of infection to the infant, depending on the type of TNFi being used, she added during a press conference.

“I think that these are really informative and supportive data to let women know that they probably have a really good chance of doing very well during the pregnancy if they continue” their TNFi, said Dr. Tedeschi, who was not involved with the study.
 

TNF discontinuation on the decline

In a related study, researchers at McGill University, Montreal, found that TNFi discontinuation prior to pregnancy had decreased over time in individuals with chronic inflammatory diseases.

Using a database of U.S. insurance claims, they identified 3,372 women with RA, ankylosing spondylitis (AS), psoriasis/psoriatic arthritis (PsA), and/or inflammatory bowel disease (IBD) who previously used a TNFi and gave birth between 2011 and 2019. A patient was considered to have used a TNFi if she had filled a prescription or had an infusion procedure insurance claim within 12 weeks before the gestational period or anytime during pregnancy. Researchers did not have time-specific data to account for women who stopped treatment at pregnancy diagnosis.

Nearly half (47%) of all identified pregnancies were in individuals with IBD, and the rest included patients with RA (24%), psoriasis or PsA (16%), AS (3%), or more than one diagnosis (10%).

In total, 14% of women discontinued TNFi use in the 12 weeks before becoming pregnant and did not restart. From 2011 to 2013, 19% of patients stopped their TNFi, but this proportion decreased overtime, with 10% of patients stopping therapy from 2017 to 2019 (P < .0001).

Lucy Hicks/Medscape Medical News

This decline “possibly reflects the increase in real-world evidence about the safety of TNFi in pregnancy. That research, in turn, led to new guidelines recommending the continuation of TNFi during pregnancy,” first author Leah Flatman, a PhD candidate in epidemiology at McGill, said in an interview. “I think we can see this potentially as good news.”

More patients with RA, psoriasis/PsA, and AS discontinued TNFi therapy prior to conception (23%-25%), compared with those with IBD (5%).

Ms. Flatman noted that her study and Moltó’s study complement each other by providing data on individuals stopping TNFi prior to conception versus those stopping treatment after pregnancy diagnosis.

“These findings demonstrate that continuing TNFi during pregnancy appears not to be associated with an increase in adverse obstetrical or infant outcomes,” Ms. Flatman said of Dr. Moltó’s study. “As guidelines currently recommend continuing TNFi, studies like this help demonstrate that the guideline changes do not appear to be associated with an increase in adverse events.”

Dr. Moltó and Ms. Flatman disclosed no relevant financial relationships. Dr. Tedeschi has worked as a consultant for Novartis.

A version of this article appeared on Medscape.com.

SAN DIEGO – Continuing a tumor necrosis factor inhibitor (TNFi) during pregnancy does not increase risk of worse fetal or obstetric outcomes, according to new research presented at the annual meeting of the American College of Rheumatology.

Patients who continued a TNFi also had fewer severe infections requiring hospitalization, compared with those who stopped taking the medication during their pregnancy.

Lucy Hicks/Medscape Medical News

“The main message is that patients continuing were not doing worse than the patients stopping. It’s an important clinical message for rheumatologists who are not really confident in dealing with these drugs during pregnancy,” said Anna Moltó, MD, PhD, a rheumatologist at Cochin Hospital, Paris, who led the research. “It adds to the data that it seems to be safe,” she added in an interview.

Previous research, largely from pregnant patients with inflammatory bowel disease, suggests that taking a TNFi during pregnancy is safe, and 2020 ACR guidelines conditionally recommend continuing therapy prior to and during pregnancy; however, many people still stop taking the drugs during pregnancy for fear of potentially harming the fetus.

To better understand how TNFi use affected pregnancy outcomes, Dr. Moltó and colleagues analyzed data from a French nationwide health insurance database to identify adult women with chronic rheumatic inflammatory disease. All women included in the cohort had a singleton pregnancy between 2008 and 2017 and were taking a TNFi upon pregnancy diagnosis.

Patients who restarted TNFi after initially pausing because of pregnancy were included in the continuation group.

Researchers identified more than 2,000 pregnancies, including 1,503 in individuals with spondyloarthritis and 579 individuals with rheumatoid arthritis. Patients were, on average, 31 years old and were diagnosed with a rheumatic disease 4 years prior to their pregnancy.

About 72% (n = 1,497) discontinued TNFi after learning they were pregnant, and 584 individuals continued treatment. Dr. Moltó noted that data from more recent years might have captured lower discontinuation rates among pregnant individuals, but those data were not available for the study.

There was no difference in unfavorable obstetrical or infant outcomes, including spontaneous abortion, preeclampsia, gestational diabetes, major congenital malformation, and severe infection of the infant requiring hospitalization. Somewhat surprisingly, the data showed that women who discontinued a TNFi were more likely to be hospitalized for infection either during their pregnancy or up to 6 weeks after delivery, compared with those who continued therapy (1.3% vs. 0.2%, respectively).

Dr. Moltó is currently looking into what could be behind this counterintuitive result, but she hypothesizes that patients who had stopped TNFi may have been taking more glucocorticoids.

“At our institution, there is generally a comfort level with continuing TNF inhibitors during pregnancy, at least until about 36 weeks,” said Sara K. Tedeschi, MD, MPH, a rheumatologist at Brigham and Women’s Hospital and assistant professor of medicine at Harvard Medical School, both in Boston. Sometimes, there is concern for risk of infection to the infant, depending on the type of TNFi being used, she added during a press conference.

“I think that these are really informative and supportive data to let women know that they probably have a really good chance of doing very well during the pregnancy if they continue” their TNFi, said Dr. Tedeschi, who was not involved with the study.
 

TNF discontinuation on the decline

In a related study, researchers at McGill University, Montreal, found that TNFi discontinuation prior to pregnancy had decreased over time in individuals with chronic inflammatory diseases.

Using a database of U.S. insurance claims, they identified 3,372 women with RA, ankylosing spondylitis (AS), psoriasis/psoriatic arthritis (PsA), and/or inflammatory bowel disease (IBD) who previously used a TNFi and gave birth between 2011 and 2019. A patient was considered to have used a TNFi if she had filled a prescription or had an infusion procedure insurance claim within 12 weeks before the gestational period or anytime during pregnancy. Researchers did not have time-specific data to account for women who stopped treatment at pregnancy diagnosis.

Nearly half (47%) of all identified pregnancies were in individuals with IBD, and the rest included patients with RA (24%), psoriasis or PsA (16%), AS (3%), or more than one diagnosis (10%).

In total, 14% of women discontinued TNFi use in the 12 weeks before becoming pregnant and did not restart. From 2011 to 2013, 19% of patients stopped their TNFi, but this proportion decreased overtime, with 10% of patients stopping therapy from 2017 to 2019 (P < .0001).

Lucy Hicks/Medscape Medical News

This decline “possibly reflects the increase in real-world evidence about the safety of TNFi in pregnancy. That research, in turn, led to new guidelines recommending the continuation of TNFi during pregnancy,” first author Leah Flatman, a PhD candidate in epidemiology at McGill, said in an interview. “I think we can see this potentially as good news.”

More patients with RA, psoriasis/PsA, and AS discontinued TNFi therapy prior to conception (23%-25%), compared with those with IBD (5%).

Ms. Flatman noted that her study and Moltó’s study complement each other by providing data on individuals stopping TNFi prior to conception versus those stopping treatment after pregnancy diagnosis.

“These findings demonstrate that continuing TNFi during pregnancy appears not to be associated with an increase in adverse obstetrical or infant outcomes,” Ms. Flatman said of Dr. Moltó’s study. “As guidelines currently recommend continuing TNFi, studies like this help demonstrate that the guideline changes do not appear to be associated with an increase in adverse events.”

Dr. Moltó and Ms. Flatman disclosed no relevant financial relationships. Dr. Tedeschi has worked as a consultant for Novartis.

A version of this article appeared on Medscape.com.

WASHINGTON – The approval last year of the interleukin (IL)-36 receptor antagonist spesolimab for treating generalized pustular psoriasis flares brightened the treatment landscape for this rare condition, and a recently published phase 2 study suggests a potential role of spesolimab for flare prevention. But when it comes to pustular disease localized to the hands and feet – palmoplantar pustulosis – treatment options have only modest efficacy, and spesolimab appears not to work, according to speakers at the annual research symposium of the National Psoriasis Foundation.

“The IL-36 receptor antagonists don’t seem to be quite the answer for [palmoplantar pustulosis] that they are for generalized pustular psoriasis [GPP],” Megan H. Noe, MD, MPH, assistant professor of dermatology at Harvard Medical School and a dermatologist at Brigham and Women’s Hospital, Boston, said at the meeting.

Psoriasis affecting the hands and feet – both pustular and nonpustular – has a higher impact on quality of life and higher functional disability than does non-acral psoriasis, is less responsive to treatment, and has a “very confusing nomenclature” that complicates research and thus management, said Jason Ezra Hawkes, MD, a dermatologist in Rocklin, Calif., and former faculty member of several departments of dermatology. Both he and Dr. Noe spoke during a tough-to-treat session at the NPF meeting.

IL-17 and IL-23 blockade, as well as tumor necrosis factor (TNF) inhibition, are effective overall for palmoplantar psoriasis (nonpustular), but in general, responses are lower than for plaque psoriasis. Apremilast (Otezla), a phosphodiesterase-4 inhibitor, has some efficacy for pustular variants, but for hyperkeratotic variants it “does not perform as well as more selective inhibition of IL-17 and IL-23 blockade,” he said.

Dr. Hawkes

Palmoplantar pustulosis, and a word on generalized disease

Dermatologists are using a variety of treatments for palmoplantar pustulosis, with no clear first-line choices, Dr. Noe said. In a case series of almost 200 patients with palmoplantar pustulosis across 20 dermatology practices, published in JAMA Dermatology, 35% of patients received a systemic therapy prescription at their initial encounter – most commonly acitretin, followed by methotrexate and phototherapy. “Biologics were used, but use was varied and not as often as with oral agents,” said Dr. Noe, a coauthor of the study.

TNF blockers led to improvements ranging from 57% to 84%, depending on the agent, in a 2020 retrospective study of patients with palmoplantar pustulosis or acrodermatitis continua of Hallopeau, Dr. Noe noted. However, rates of complete clearance were only 20%-29%.

Apremilast showed modest efficacy after 5 months of treatment, with 62% of patients achieving at least a 50% improvement in the Palmoplantar Pustulosis Psoriasis Area and Severity Index (PPPASI) in a 2021 open-label, phase 2 study involving 21 patients. “This may represent a potential treatment option,” Dr. Noe said. “It’s something, but not what we’re used to seeing in our plaque psoriasis patients.”

A 2021 phase 2a, double-blind, randomized, placebo-controlled study of spesolimab in patients with palmoplantar pustulosis, meanwhile, failed to meet its primary endpoint, with only 32% of patients achieving a 50% improvement at 16 weeks, compared with 24% of patients in the placebo arm. And a recently published network meta-analysis found that none of the five drugs studied in seven randomized controlled trials – biologic or oral – was more effective than placebo for clearance or improvement of palmoplantar pustulosis.

The spesolimab (Spevigo) results have been disappointing considering the biologic’s newfound efficacy and role as the first Food and Drug Administration–approved therapy for generalized pustular disease, according to Dr. Noe. The ability of a single 900-mg intravenous dose of the IL-36 receptor antagonist to completely clear pustules at 1 week in 54% of patients with generalized disease, compared with 6% of the placebo group, was “groundbreaking,” she said, referring to results of the pivotal trial published in the New England Journal of Medicine.

And given that “preventing GPP flares is ultimately what we want,” she said, more good news was reported this year in The Lancet: The finding from an international, randomized, placebo-controlled study that high-dose subcutaneous spesolimab significantly reduced the risk of a flare over 48 weeks. “There are lots of ongoing studies right now to understand the best way to dose spesolimab,” she said.

Moreover, another IL-36 receptor antagonist, imsidolimab, is being investigated in a phase 3 trial for generalized pustular disease, she noted. A phase 2, open-label study of patients with GPP found that “more than half of patients were very much improved at 4 weeks, and some patients started showing improvement at day 3,” Dr. Noe said.

An area of research she is interested in is the potential for Janus kinase (JAK) inhibitors as a treatment for palmoplantar pustulosis. For pustulosis on the hands and feet, recent case reports describing the efficacy of JAK inhibitors have caught her eye. “Right now, all we have is this case report data, mostly with tofacitinib, but I think it’s exciting,” she said, noting a recently published report in the British Journal of Dermatology.

Palmoplantar psoriasis

Pustular psoriatic disease can be localized to the hand and/or feet only, or can co-occur with generalized pustular disease, just as palmoplantar psoriasis can be localized to the hands and/or feet or, more commonly, can co-occur with widespread plaque psoriasis. Research has shown, Dr. Hawkes said, that with both types of acral disease, many patients have or have had plaque psoriasis outside of acral sites.

The nomenclature and acronyms for palmoplantar psoriatic disease have complicated patient education, communication, and research, Dr. Hawkes said. Does PPP refer to palmoplantar psoriasis, or palmoplantar pustulosis, for instance? What is the difference between palmoplantar pustulosis (coined PPP) and palmoplantar pustular psoriasis (referred to as PPPP)?

What if disease is only on the hands, only on the feet, or only on the backs of the hands? And at what point is disease not classified as palmoplantar psoriasis, but plaque psoriasis with involvement of the hands and feet? Inconsistencies and lack of clarification lead to “confusing” literature, he said.

Heterogeneity in populations across trials resulting from “inconsistent categorization and phenotype inclusion” may partly account for the recalcitrance to treatment reported in the literature, he said. Misdiagnosis as psoriasis in cases of localized disease (confusion with eczema, for instance), and the fact that hands and feet are subject to increased trauma and injury, compared with non-acral sites, are also at play.

Trials may also allow insufficient time for improvement, compared with non-acral sites. “What we’ve learned about the hands and feet is that it takes a much longer time for disease to improve,” Dr. Hawkes said, so primary endpoints must take this into account.

There is unique immunologic signaling in palmoplantar disease that differs from the predominant signaling in traditional plaque psoriasis, he emphasized, and “mixed immunophenotypes” that need to be unraveled.

Dr. Hawkes disclosed ties with AbbVie, Arcutis, Bristol-Myers Squibb, Boehringer Ingelheim, Janssen, LEO, Lilly, Novartis, Pfizer, Regeneron, Sanofi, Sun Pharma, and UCB. Dr. Noe disclosed ties to Bristol-Myers Squibb and Boehringer Ingelheim.

WASHINGTON – The approval last year of the interleukin (IL)-36 receptor antagonist spesolimab for treating generalized pustular psoriasis flares brightened the treatment landscape for this rare condition, and a recently published phase 2 study suggests a potential role of spesolimab for flare prevention. But when it comes to pustular disease localized to the hands and feet – palmoplantar pustulosis – treatment options have only modest efficacy, and spesolimab appears not to work, according to speakers at the annual research symposium of the National Psoriasis Foundation.

“The IL-36 receptor antagonists don’t seem to be quite the answer for [palmoplantar pustulosis] that they are for generalized pustular psoriasis [GPP],” Megan H. Noe, MD, MPH, assistant professor of dermatology at Harvard Medical School and a dermatologist at Brigham and Women’s Hospital, Boston, said at the meeting.

Psoriasis affecting the hands and feet – both pustular and nonpustular – has a higher impact on quality of life and higher functional disability than does non-acral psoriasis, is less responsive to treatment, and has a “very confusing nomenclature” that complicates research and thus management, said Jason Ezra Hawkes, MD, a dermatologist in Rocklin, Calif., and former faculty member of several departments of dermatology. Both he and Dr. Noe spoke during a tough-to-treat session at the NPF meeting.

IL-17 and IL-23 blockade, as well as tumor necrosis factor (TNF) inhibition, are effective overall for palmoplantar psoriasis (nonpustular), but in general, responses are lower than for plaque psoriasis. Apremilast (Otezla), a phosphodiesterase-4 inhibitor, has some efficacy for pustular variants, but for hyperkeratotic variants it “does not perform as well as more selective inhibition of IL-17 and IL-23 blockade,” he said.

Dr. Hawkes

Palmoplantar pustulosis, and a word on generalized disease

Dermatologists are using a variety of treatments for palmoplantar pustulosis, with no clear first-line choices, Dr. Noe said. In a case series of almost 200 patients with palmoplantar pustulosis across 20 dermatology practices, published in JAMA Dermatology, 35% of patients received a systemic therapy prescription at their initial encounter – most commonly acitretin, followed by methotrexate and phototherapy. “Biologics were used, but use was varied and not as often as with oral agents,” said Dr. Noe, a coauthor of the study.

TNF blockers led to improvements ranging from 57% to 84%, depending on the agent, in a 2020 retrospective study of patients with palmoplantar pustulosis or acrodermatitis continua of Hallopeau, Dr. Noe noted. However, rates of complete clearance were only 20%-29%.

Apremilast showed modest efficacy after 5 months of treatment, with 62% of patients achieving at least a 50% improvement in the Palmoplantar Pustulosis Psoriasis Area and Severity Index (PPPASI) in a 2021 open-label, phase 2 study involving 21 patients. “This may represent a potential treatment option,” Dr. Noe said. “It’s something, but not what we’re used to seeing in our plaque psoriasis patients.”

A 2021 phase 2a, double-blind, randomized, placebo-controlled study of spesolimab in patients with palmoplantar pustulosis, meanwhile, failed to meet its primary endpoint, with only 32% of patients achieving a 50% improvement at 16 weeks, compared with 24% of patients in the placebo arm. And a recently published network meta-analysis found that none of the five drugs studied in seven randomized controlled trials – biologic or oral – was more effective than placebo for clearance or improvement of palmoplantar pustulosis.

The spesolimab (Spevigo) results have been disappointing considering the biologic’s newfound efficacy and role as the first Food and Drug Administration–approved therapy for generalized pustular disease, according to Dr. Noe. The ability of a single 900-mg intravenous dose of the IL-36 receptor antagonist to completely clear pustules at 1 week in 54% of patients with generalized disease, compared with 6% of the placebo group, was “groundbreaking,” she said, referring to results of the pivotal trial published in the New England Journal of Medicine.

And given that “preventing GPP flares is ultimately what we want,” she said, more good news was reported this year in The Lancet: The finding from an international, randomized, placebo-controlled study that high-dose subcutaneous spesolimab significantly reduced the risk of a flare over 48 weeks. “There are lots of ongoing studies right now to understand the best way to dose spesolimab,” she said.

Moreover, another IL-36 receptor antagonist, imsidolimab, is being investigated in a phase 3 trial for generalized pustular disease, she noted. A phase 2, open-label study of patients with GPP found that “more than half of patients were very much improved at 4 weeks, and some patients started showing improvement at day 3,” Dr. Noe said.

An area of research she is interested in is the potential for Janus kinase (JAK) inhibitors as a treatment for palmoplantar pustulosis. For pustulosis on the hands and feet, recent case reports describing the efficacy of JAK inhibitors have caught her eye. “Right now, all we have is this case report data, mostly with tofacitinib, but I think it’s exciting,” she said, noting a recently published report in the British Journal of Dermatology.

Palmoplantar psoriasis

Pustular psoriatic disease can be localized to the hand and/or feet only, or can co-occur with generalized pustular disease, just as palmoplantar psoriasis can be localized to the hands and/or feet or, more commonly, can co-occur with widespread plaque psoriasis. Research has shown, Dr. Hawkes said, that with both types of acral disease, many patients have or have had plaque psoriasis outside of acral sites.

The nomenclature and acronyms for palmoplantar psoriatic disease have complicated patient education, communication, and research, Dr. Hawkes said. Does PPP refer to palmoplantar psoriasis, or palmoplantar pustulosis, for instance? What is the difference between palmoplantar pustulosis (coined PPP) and palmoplantar pustular psoriasis (referred to as PPPP)?

What if disease is only on the hands, only on the feet, or only on the backs of the hands? And at what point is disease not classified as palmoplantar psoriasis, but plaque psoriasis with involvement of the hands and feet? Inconsistencies and lack of clarification lead to “confusing” literature, he said.

Heterogeneity in populations across trials resulting from “inconsistent categorization and phenotype inclusion” may partly account for the recalcitrance to treatment reported in the literature, he said. Misdiagnosis as psoriasis in cases of localized disease (confusion with eczema, for instance), and the fact that hands and feet are subject to increased trauma and injury, compared with non-acral sites, are also at play.

Trials may also allow insufficient time for improvement, compared with non-acral sites. “What we’ve learned about the hands and feet is that it takes a much longer time for disease to improve,” Dr. Hawkes said, so primary endpoints must take this into account.

There is unique immunologic signaling in palmoplantar disease that differs from the predominant signaling in traditional plaque psoriasis, he emphasized, and “mixed immunophenotypes” that need to be unraveled.

Dr. Hawkes disclosed ties with AbbVie, Arcutis, Bristol-Myers Squibb, Boehringer Ingelheim, Janssen, LEO, Lilly, Novartis, Pfizer, Regeneron, Sanofi, Sun Pharma, and UCB. Dr. Noe disclosed ties to Bristol-Myers Squibb and Boehringer Ingelheim.

WASHINGTON – The approval last year of the interleukin (IL)-36 receptor antagonist spesolimab for treating generalized pustular psoriasis flares brightened the treatment landscape for this rare condition, and a recently published phase 2 study suggests a potential role of spesolimab for flare prevention. But when it comes to pustular disease localized to the hands and feet – palmoplantar pustulosis – treatment options have only modest efficacy, and spesolimab appears not to work, according to speakers at the annual research symposium of the National Psoriasis Foundation.

“The IL-36 receptor antagonists don’t seem to be quite the answer for [palmoplantar pustulosis] that they are for generalized pustular psoriasis [GPP],” Megan H. Noe, MD, MPH, assistant professor of dermatology at Harvard Medical School and a dermatologist at Brigham and Women’s Hospital, Boston, said at the meeting.

Psoriasis affecting the hands and feet – both pustular and nonpustular – has a higher impact on quality of life and higher functional disability than does non-acral psoriasis, is less responsive to treatment, and has a “very confusing nomenclature” that complicates research and thus management, said Jason Ezra Hawkes, MD, a dermatologist in Rocklin, Calif., and former faculty member of several departments of dermatology. Both he and Dr. Noe spoke during a tough-to-treat session at the NPF meeting.

IL-17 and IL-23 blockade, as well as tumor necrosis factor (TNF) inhibition, are effective overall for palmoplantar psoriasis (nonpustular), but in general, responses are lower than for plaque psoriasis. Apremilast (Otezla), a phosphodiesterase-4 inhibitor, has some efficacy for pustular variants, but for hyperkeratotic variants it “does not perform as well as more selective inhibition of IL-17 and IL-23 blockade,” he said.

Dr. Hawkes

Palmoplantar pustulosis, and a word on generalized disease

Dermatologists are using a variety of treatments for palmoplantar pustulosis, with no clear first-line choices, Dr. Noe said. In a case series of almost 200 patients with palmoplantar pustulosis across 20 dermatology practices, published in JAMA Dermatology, 35% of patients received a systemic therapy prescription at their initial encounter – most commonly acitretin, followed by methotrexate and phototherapy. “Biologics were used, but use was varied and not as often as with oral agents,” said Dr. Noe, a coauthor of the study.

TNF blockers led to improvements ranging from 57% to 84%, depending on the agent, in a 2020 retrospective study of patients with palmoplantar pustulosis or acrodermatitis continua of Hallopeau, Dr. Noe noted. However, rates of complete clearance were only 20%-29%.

Apremilast showed modest efficacy after 5 months of treatment, with 62% of patients achieving at least a 50% improvement in the Palmoplantar Pustulosis Psoriasis Area and Severity Index (PPPASI) in a 2021 open-label, phase 2 study involving 21 patients. “This may represent a potential treatment option,” Dr. Noe said. “It’s something, but not what we’re used to seeing in our plaque psoriasis patients.”

A 2021 phase 2a, double-blind, randomized, placebo-controlled study of spesolimab in patients with palmoplantar pustulosis, meanwhile, failed to meet its primary endpoint, with only 32% of patients achieving a 50% improvement at 16 weeks, compared with 24% of patients in the placebo arm. And a recently published network meta-analysis found that none of the five drugs studied in seven randomized controlled trials – biologic or oral – was more effective than placebo for clearance or improvement of palmoplantar pustulosis.

The spesolimab (Spevigo) results have been disappointing considering the biologic’s newfound efficacy and role as the first Food and Drug Administration–approved therapy for generalized pustular disease, according to Dr. Noe. The ability of a single 900-mg intravenous dose of the IL-36 receptor antagonist to completely clear pustules at 1 week in 54% of patients with generalized disease, compared with 6% of the placebo group, was “groundbreaking,” she said, referring to results of the pivotal trial published in the New England Journal of Medicine.

And given that “preventing GPP flares is ultimately what we want,” she said, more good news was reported this year in The Lancet: The finding from an international, randomized, placebo-controlled study that high-dose subcutaneous spesolimab significantly reduced the risk of a flare over 48 weeks. “There are lots of ongoing studies right now to understand the best way to dose spesolimab,” she said.

Moreover, another IL-36 receptor antagonist, imsidolimab, is being investigated in a phase 3 trial for generalized pustular disease, she noted. A phase 2, open-label study of patients with GPP found that “more than half of patients were very much improved at 4 weeks, and some patients started showing improvement at day 3,” Dr. Noe said.

An area of research she is interested in is the potential for Janus kinase (JAK) inhibitors as a treatment for palmoplantar pustulosis. For pustulosis on the hands and feet, recent case reports describing the efficacy of JAK inhibitors have caught her eye. “Right now, all we have is this case report data, mostly with tofacitinib, but I think it’s exciting,” she said, noting a recently published report in the British Journal of Dermatology.

Palmoplantar psoriasis

Pustular psoriatic disease can be localized to the hand and/or feet only, or can co-occur with generalized pustular disease, just as palmoplantar psoriasis can be localized to the hands and/or feet or, more commonly, can co-occur with widespread plaque psoriasis. Research has shown, Dr. Hawkes said, that with both types of acral disease, many patients have or have had plaque psoriasis outside of acral sites.

The nomenclature and acronyms for palmoplantar psoriatic disease have complicated patient education, communication, and research, Dr. Hawkes said. Does PPP refer to palmoplantar psoriasis, or palmoplantar pustulosis, for instance? What is the difference between palmoplantar pustulosis (coined PPP) and palmoplantar pustular psoriasis (referred to as PPPP)?

What if disease is only on the hands, only on the feet, or only on the backs of the hands? And at what point is disease not classified as palmoplantar psoriasis, but plaque psoriasis with involvement of the hands and feet? Inconsistencies and lack of clarification lead to “confusing” literature, he said.

Heterogeneity in populations across trials resulting from “inconsistent categorization and phenotype inclusion” may partly account for the recalcitrance to treatment reported in the literature, he said. Misdiagnosis as psoriasis in cases of localized disease (confusion with eczema, for instance), and the fact that hands and feet are subject to increased trauma and injury, compared with non-acral sites, are also at play.

Trials may also allow insufficient time for improvement, compared with non-acral sites. “What we’ve learned about the hands and feet is that it takes a much longer time for disease to improve,” Dr. Hawkes said, so primary endpoints must take this into account.

There is unique immunologic signaling in palmoplantar disease that differs from the predominant signaling in traditional plaque psoriasis, he emphasized, and “mixed immunophenotypes” that need to be unraveled.

Dr. Hawkes disclosed ties with AbbVie, Arcutis, Bristol-Myers Squibb, Boehringer Ingelheim, Janssen, LEO, Lilly, Novartis, Pfizer, Regeneron, Sanofi, Sun Pharma, and UCB. Dr. Noe disclosed ties to Bristol-Myers Squibb and Boehringer Ingelheim.

TOPLINE:

Use of Janus kinase (JAK) inhibitors is associated with a nearly fourfold increase in risk of acne compared with placebo, according to an analysis of 25 JAK inhibitor studies.

METHODOLOGY:

• Acne has been reported to be an adverse effect of JAK inhibitors, but not much is known about how common acne is overall and how incidence differs between different JAK inhibitors and the disease being treated.
• For the systematic review and meta-analysis, researchers identified 25 phase 2 or 3 randomized, controlled trials that reported acne as an adverse event associated with the use of JAK inhibitors.
• The study population included 10,839 participants (54% male, 46% female).
• The primary outcome was the incidence of acne following a period of JAK inhibitor use.

TAKEAWAY:

• Overall, the risk of acne was significantly higher among those treated with JAK inhibitors in comparison with patients given placebo in a pooled analysis (odds ratio [OR], 3.83).
• The risk of acne was highest with abrocitinib (OR, 13.47), followed by baricitinib (OR, 4.96), upadacitinib (OR, 4.79), deuruxolitinib (OR, 3.30), and deucravacitinib (OR, 2.64). By JAK inhibitor class, results were as follows: JAK1-specific inhibitors (OR, 4.69), combined JAK1 and JAK2 inhibitors (OR, 3.43), and tyrosine kinase 2 inhibitors (OR, 2.64).
• In a subgroup analysis, risk of acne was higher among patients using JAK inhibitors for dermatologic conditions in comparison with those using JAK inhibitors for nondermatologic conditions (OR, 4.67 vs 1.18).
• Age and gender had no apparent impact on the effect of JAK inhibitor use on acne risk.

IN PRACTICE:

“The occurrence of acne following treatment with certain classes of JAK inhibitors is of potential concern, as this adverse effect may jeopardize treatment adherence among some patients,” the researchers wrote. More studies are needed “to characterize the underlying mechanism of acne with JAK inhibitor use and to identify best practices for treatment,” they added.

SOURCE:

The lead author was Jeremy Martinez, MPH, of Harvard Medical School, Boston. The study was published online in JAMA Dermatology.

LIMITATIONS:

The review was limited by the variable classification and reporting of acne across studies, the potential exclusion of relevant studies, and the small number of studies for certain drugs.

DISCLOSURES:

The studies were mainly funded by the pharmaceutical industry. Mr. Martinez disclosed no relevant financial relationships. Several coauthors have ties with Dexcel Pharma Technologies, AbbVie, Concert, Pfizer, 3Derm Systems, Incyte, Aclaris, Eli Lilly, Concert, Equillium, ASLAN, ACOM, and Boehringer Ingelheim.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Use of Janus kinase (JAK) inhibitors is associated with a nearly fourfold increase in risk of acne compared with placebo, according to an analysis of 25 JAK inhibitor studies.

METHODOLOGY:

• Acne has been reported to be an adverse effect of JAK inhibitors, but not much is known about how common acne is overall and how incidence differs between different JAK inhibitors and the disease being treated.
• For the systematic review and meta-analysis, researchers identified 25 phase 2 or 3 randomized, controlled trials that reported acne as an adverse event associated with the use of JAK inhibitors.
• The study population included 10,839 participants (54% male, 46% female).
• The primary outcome was the incidence of acne following a period of JAK inhibitor use.

TAKEAWAY:

• Overall, the risk of acne was significantly higher among those treated with JAK inhibitors in comparison with patients given placebo in a pooled analysis (odds ratio [OR], 3.83).
• The risk of acne was highest with abrocitinib (OR, 13.47), followed by baricitinib (OR, 4.96), upadacitinib (OR, 4.79), deuruxolitinib (OR, 3.30), and deucravacitinib (OR, 2.64). By JAK inhibitor class, results were as follows: JAK1-specific inhibitors (OR, 4.69), combined JAK1 and JAK2 inhibitors (OR, 3.43), and tyrosine kinase 2 inhibitors (OR, 2.64).
• In a subgroup analysis, risk of acne was higher among patients using JAK inhibitors for dermatologic conditions in comparison with those using JAK inhibitors for nondermatologic conditions (OR, 4.67 vs 1.18).
• Age and gender had no apparent impact on the effect of JAK inhibitor use on acne risk.

IN PRACTICE:

“The occurrence of acne following treatment with certain classes of JAK inhibitors is of potential concern, as this adverse effect may jeopardize treatment adherence among some patients,” the researchers wrote. More studies are needed “to characterize the underlying mechanism of acne with JAK inhibitor use and to identify best practices for treatment,” they added.

SOURCE:

The lead author was Jeremy Martinez, MPH, of Harvard Medical School, Boston. The study was published online in JAMA Dermatology.

LIMITATIONS:

The review was limited by the variable classification and reporting of acne across studies, the potential exclusion of relevant studies, and the small number of studies for certain drugs.

DISCLOSURES:

The studies were mainly funded by the pharmaceutical industry. Mr. Martinez disclosed no relevant financial relationships. Several coauthors have ties with Dexcel Pharma Technologies, AbbVie, Concert, Pfizer, 3Derm Systems, Incyte, Aclaris, Eli Lilly, Concert, Equillium, ASLAN, ACOM, and Boehringer Ingelheim.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Use of Janus kinase (JAK) inhibitors is associated with a nearly fourfold increase in risk of acne compared with placebo, according to an analysis of 25 JAK inhibitor studies.

METHODOLOGY:

• Acne has been reported to be an adverse effect of JAK inhibitors, but not much is known about how common acne is overall and how incidence differs between different JAK inhibitors and the disease being treated.
• For the systematic review and meta-analysis, researchers identified 25 phase 2 or 3 randomized, controlled trials that reported acne as an adverse event associated with the use of JAK inhibitors.
• The study population included 10,839 participants (54% male, 46% female).
• The primary outcome was the incidence of acne following a period of JAK inhibitor use.

TAKEAWAY:

• Overall, the risk of acne was significantly higher among those treated with JAK inhibitors in comparison with patients given placebo in a pooled analysis (odds ratio [OR], 3.83).
• The risk of acne was highest with abrocitinib (OR, 13.47), followed by baricitinib (OR, 4.96), upadacitinib (OR, 4.79), deuruxolitinib (OR, 3.30), and deucravacitinib (OR, 2.64). By JAK inhibitor class, results were as follows: JAK1-specific inhibitors (OR, 4.69), combined JAK1 and JAK2 inhibitors (OR, 3.43), and tyrosine kinase 2 inhibitors (OR, 2.64).
• In a subgroup analysis, risk of acne was higher among patients using JAK inhibitors for dermatologic conditions in comparison with those using JAK inhibitors for nondermatologic conditions (OR, 4.67 vs 1.18).
• Age and gender had no apparent impact on the effect of JAK inhibitor use on acne risk.

IN PRACTICE:

“The occurrence of acne following treatment with certain classes of JAK inhibitors is of potential concern, as this adverse effect may jeopardize treatment adherence among some patients,” the researchers wrote. More studies are needed “to characterize the underlying mechanism of acne with JAK inhibitor use and to identify best practices for treatment,” they added.

SOURCE:

The lead author was Jeremy Martinez, MPH, of Harvard Medical School, Boston. The study was published online in JAMA Dermatology.

LIMITATIONS:

The review was limited by the variable classification and reporting of acne across studies, the potential exclusion of relevant studies, and the small number of studies for certain drugs.

DISCLOSURES:

The studies were mainly funded by the pharmaceutical industry. Mr. Martinez disclosed no relevant financial relationships. Several coauthors have ties with Dexcel Pharma Technologies, AbbVie, Concert, Pfizer, 3Derm Systems, Incyte, Aclaris, Eli Lilly, Concert, Equillium, ASLAN, ACOM, and Boehringer Ingelheim.
 

A version of this article appeared on Medscape.com.