MDedge Dermatology

Key clinical point: An induction treatment of 200 mg abrocitinib followed by dose reduction (100 mg) or continuous dosing (200 mg) is efficacious and safe in adults and adolescents with moderate-to-severe atopic dermatitis (AD).

Major finding: In the 200 mg abrocitinib, 100 mg abrocitinib, and placebo arms, similar proportions of adolescents and adults experienced disease flare (14.9% and 16.9%, 42.9% and 38.9%, and 75.5% and 78.0%, respectively) and the Eczema Area and Severity Index response was recaptured by 28.6%, 25.0%, and 52.9% of adolescents and 34.3%, 33.7%, and 58.0% of adults, respectively. The safety profile was consistent in adolescents and adults.

Study details: This post hoc analysis of the JADE REGIMEN study included 246 adolescents (12-17 years) and 987 adults with moderate-to-severe AD who received 200 mg abrocitinib induction treatment; responders were randomly assigned to receive 40-week abrocitinib (200/100 mg) or placebo maintenance treatment and rescue treatment (if disease flared).

Disclosures: Pfizer Inc funded the study. Some authors reported various ties, including employment and stock ownership, with Pfizer or others.

Source: Flohr C et al. Efficacy and safety of abrocitinib monotherapy in adolescents and adults: A post hoc analysis of the phase 3 JAK1 atopic dermatitis efficacy and safety (JADE) REGIMEN clinical trial. J Dermatolog Treat. 2023;1-13 (Apr 10). Doi: 10.1080/09546634.2023.2200866

Key clinical point: An induction treatment of 200 mg abrocitinib followed by dose reduction (100 mg) or continuous dosing (200 mg) is efficacious and safe in adults and adolescents with moderate-to-severe atopic dermatitis (AD).

Major finding: In the 200 mg abrocitinib, 100 mg abrocitinib, and placebo arms, similar proportions of adolescents and adults experienced disease flare (14.9% and 16.9%, 42.9% and 38.9%, and 75.5% and 78.0%, respectively) and the Eczema Area and Severity Index response was recaptured by 28.6%, 25.0%, and 52.9% of adolescents and 34.3%, 33.7%, and 58.0% of adults, respectively. The safety profile was consistent in adolescents and adults.

Study details: This post hoc analysis of the JADE REGIMEN study included 246 adolescents (12-17 years) and 987 adults with moderate-to-severe AD who received 200 mg abrocitinib induction treatment; responders were randomly assigned to receive 40-week abrocitinib (200/100 mg) or placebo maintenance treatment and rescue treatment (if disease flared).

Disclosures: Pfizer Inc funded the study. Some authors reported various ties, including employment and stock ownership, with Pfizer or others.

Source: Flohr C et al. Efficacy and safety of abrocitinib monotherapy in adolescents and adults: A post hoc analysis of the phase 3 JAK1 atopic dermatitis efficacy and safety (JADE) REGIMEN clinical trial. J Dermatolog Treat. 2023;1-13 (Apr 10). Doi: 10.1080/09546634.2023.2200866

Key clinical point: An induction treatment of 200 mg abrocitinib followed by dose reduction (100 mg) or continuous dosing (200 mg) is efficacious and safe in adults and adolescents with moderate-to-severe atopic dermatitis (AD).

Major finding: In the 200 mg abrocitinib, 100 mg abrocitinib, and placebo arms, similar proportions of adolescents and adults experienced disease flare (14.9% and 16.9%, 42.9% and 38.9%, and 75.5% and 78.0%, respectively) and the Eczema Area and Severity Index response was recaptured by 28.6%, 25.0%, and 52.9% of adolescents and 34.3%, 33.7%, and 58.0% of adults, respectively. The safety profile was consistent in adolescents and adults.

Study details: This post hoc analysis of the JADE REGIMEN study included 246 adolescents (12-17 years) and 987 adults with moderate-to-severe AD who received 200 mg abrocitinib induction treatment; responders were randomly assigned to receive 40-week abrocitinib (200/100 mg) or placebo maintenance treatment and rescue treatment (if disease flared).

Disclosures: Pfizer Inc funded the study. Some authors reported various ties, including employment and stock ownership, with Pfizer or others.

Source: Flohr C et al. Efficacy and safety of abrocitinib monotherapy in adolescents and adults: A post hoc analysis of the phase 3 JAK1 atopic dermatitis efficacy and safety (JADE) REGIMEN clinical trial. J Dermatolog Treat. 2023;1-13 (Apr 10). Doi: 10.1080/09546634.2023.2200866

Key clinical point: Maternal atopic dermatitis (AD) significantly increases the risk for both childhood- and adult-onset AD, and active smoking is the main lifestyle risk factor for adult-onset AD.

Major finding: Compared with non-atopic and atopic control individuals, individuals with a maternal AD family history had a significantly higher risk for childhood-onset (adjusted odds ratio [aOR] 4.36, 95% CI 1.18-16.17; and aOR 32.97, 95% CI 4.03-269.68, respectively) and adult-onset AD (aOR 15.79, 95% CI 1.81-137.74; and aOR 34.15, 95% CI 3.15-370.28, respectively) and active smokers had an increased risk for adult-onset AD (aOR 5.54, 95% CI 1.06-29.01; and aOR 4.03, 95% CI 1.20-13.45, respectively).

Study details: This study analyzed the cross-sectional data of 736 adult individuals with childhood-onset (<18 years) or adult-onset (≥18 years) AD and 76 non-atopic and 91 atopic control individuals without AD.

Disclosures: This study was funded by the Christine Kühne-Center for Allergy Research and Education (CK-CARE), Switzerland. Some authors declared various ties, including employment, with CK-CARE or others.

Source: Maintz L et al. Atopic dermatitis: Correlation of distinct risk factors with age of onset in adulthood compared to childhood. Allergy. 2023 (Mar 22). Doi: 10.1111/all.15721

Key clinical point: Maternal atopic dermatitis (AD) significantly increases the risk for both childhood- and adult-onset AD, and active smoking is the main lifestyle risk factor for adult-onset AD.

Major finding: Compared with non-atopic and atopic control individuals, individuals with a maternal AD family history had a significantly higher risk for childhood-onset (adjusted odds ratio [aOR] 4.36, 95% CI 1.18-16.17; and aOR 32.97, 95% CI 4.03-269.68, respectively) and adult-onset AD (aOR 15.79, 95% CI 1.81-137.74; and aOR 34.15, 95% CI 3.15-370.28, respectively) and active smokers had an increased risk for adult-onset AD (aOR 5.54, 95% CI 1.06-29.01; and aOR 4.03, 95% CI 1.20-13.45, respectively).

Study details: This study analyzed the cross-sectional data of 736 adult individuals with childhood-onset (<18 years) or adult-onset (≥18 years) AD and 76 non-atopic and 91 atopic control individuals without AD.

Disclosures: This study was funded by the Christine Kühne-Center for Allergy Research and Education (CK-CARE), Switzerland. Some authors declared various ties, including employment, with CK-CARE or others.

Source: Maintz L et al. Atopic dermatitis: Correlation of distinct risk factors with age of onset in adulthood compared to childhood. Allergy. 2023 (Mar 22). Doi: 10.1111/all.15721

Key clinical point: Maternal atopic dermatitis (AD) significantly increases the risk for both childhood- and adult-onset AD, and active smoking is the main lifestyle risk factor for adult-onset AD.

Major finding: Compared with non-atopic and atopic control individuals, individuals with a maternal AD family history had a significantly higher risk for childhood-onset (adjusted odds ratio [aOR] 4.36, 95% CI 1.18-16.17; and aOR 32.97, 95% CI 4.03-269.68, respectively) and adult-onset AD (aOR 15.79, 95% CI 1.81-137.74; and aOR 34.15, 95% CI 3.15-370.28, respectively) and active smokers had an increased risk for adult-onset AD (aOR 5.54, 95% CI 1.06-29.01; and aOR 4.03, 95% CI 1.20-13.45, respectively).

Study details: This study analyzed the cross-sectional data of 736 adult individuals with childhood-onset (<18 years) or adult-onset (≥18 years) AD and 76 non-atopic and 91 atopic control individuals without AD.

Disclosures: This study was funded by the Christine Kühne-Center for Allergy Research and Education (CK-CARE), Switzerland. Some authors declared various ties, including employment, with CK-CARE or others.

Source: Maintz L et al. Atopic dermatitis: Correlation of distinct risk factors with age of onset in adulthood compared to childhood. Allergy. 2023 (Mar 22). Doi: 10.1111/all.15721

Key clinical point: Long-term topical corticosteroid (TCS) and tacrolimus (TAC) treatments had similar efficacy and impact on airway hyperresponsiveness or inflammation in children with moderate-to-severe atopic dermatitis (AD).

Major finding: At month 36, children treated with TCS and TAC had no significant difference in the mean body surface area (P  =  .12), mean Eczema Area and Severity Index score (P  =  .2), mean Investigator’s Global Assessment Score (P  =  .12), mean transepidermal water loss at eczema site (P  =  .96) and control site (P  =  .19), median exhaled nitric oxide level (P  =  .71), or median bronchial hyperresponsiveness to methacholine (P  =  .7).

Study details: Findings are from a single-center 3-year follow-up study including 152 children aged 1-3 years with moderate-to-severe AD who were randomly assigned to receive TCS (n = 75) or TAC (n = 77).

Disclosures: This study was supported by the Foundation for Paediatric Research, Finland, Orion Research Foundation, Finland, Orion Pharma, Finland, Astellas Pharma, Japan, and others. Orion and Astellas are commercial manufacturers of the TCS used in this study.

Source: Perälä M et al. Topical tacrolimus versus corticosteroids in childhood moderate-to-severe atopic dermatitis with impact on airways: A long-term randomized open-label study. Clin Exp Dermatol. 2023 (Mar 14). Doi: 10.1093/ced/llad098

Key clinical point: Long-term topical corticosteroid (TCS) and tacrolimus (TAC) treatments had similar efficacy and impact on airway hyperresponsiveness or inflammation in children with moderate-to-severe atopic dermatitis (AD).

Major finding: At month 36, children treated with TCS and TAC had no significant difference in the mean body surface area (P  =  .12), mean Eczema Area and Severity Index score (P  =  .2), mean Investigator’s Global Assessment Score (P  =  .12), mean transepidermal water loss at eczema site (P  =  .96) and control site (P  =  .19), median exhaled nitric oxide level (P  =  .71), or median bronchial hyperresponsiveness to methacholine (P  =  .7).

Study details: Findings are from a single-center 3-year follow-up study including 152 children aged 1-3 years with moderate-to-severe AD who were randomly assigned to receive TCS (n = 75) or TAC (n = 77).

Disclosures: This study was supported by the Foundation for Paediatric Research, Finland, Orion Research Foundation, Finland, Orion Pharma, Finland, Astellas Pharma, Japan, and others. Orion and Astellas are commercial manufacturers of the TCS used in this study.

Source: Perälä M et al. Topical tacrolimus versus corticosteroids in childhood moderate-to-severe atopic dermatitis with impact on airways: A long-term randomized open-label study. Clin Exp Dermatol. 2023 (Mar 14). Doi: 10.1093/ced/llad098

Key clinical point: Long-term topical corticosteroid (TCS) and tacrolimus (TAC) treatments had similar efficacy and impact on airway hyperresponsiveness or inflammation in children with moderate-to-severe atopic dermatitis (AD).

Major finding: At month 36, children treated with TCS and TAC had no significant difference in the mean body surface area (P  =  .12), mean Eczema Area and Severity Index score (P  =  .2), mean Investigator’s Global Assessment Score (P  =  .12), mean transepidermal water loss at eczema site (P  =  .96) and control site (P  =  .19), median exhaled nitric oxide level (P  =  .71), or median bronchial hyperresponsiveness to methacholine (P  =  .7).

Study details: Findings are from a single-center 3-year follow-up study including 152 children aged 1-3 years with moderate-to-severe AD who were randomly assigned to receive TCS (n = 75) or TAC (n = 77).

Disclosures: This study was supported by the Foundation for Paediatric Research, Finland, Orion Research Foundation, Finland, Orion Pharma, Finland, Astellas Pharma, Japan, and others. Orion and Astellas are commercial manufacturers of the TCS used in this study.

Source: Perälä M et al. Topical tacrolimus versus corticosteroids in childhood moderate-to-severe atopic dermatitis with impact on airways: A long-term randomized open-label study. Clin Exp Dermatol. 2023 (Mar 14). Doi: 10.1093/ced/llad098

Key clinical point: Baricitinib offers the flexibility of dose down-titration and improvement in atopic dermatitis (AD) signs and symptoms up to treatment week 104 in patients with moderate-to-severe AD.

Major finding: Among patients receiving 4 mg baricitinib, 51.2% and 47.6% achieved or maintained a validated Investigator’s Global Assessment for AD score of 0 or 1 and 82.1%, and 73.8% maintained an Eczema Area and Severity Index 75 response at weeks 52 and 104, respectively. The clinical response was maintained after down-titration to 2 mg baricitinib.

Study details: This sub-study of the BREEZE-AD3 trial included 168 patients with moderate-to-severe AD who were responders or partial responders to 4 mg baricitinib in originating studies and were re-assigned (1:1) to receive 4 or 2 mg baricitinib at week 52.

Disclosures: This study was funded by Eli Lilly and Company under license from Incyte Corporation. Some authors reported ties with various organizations, including Eli Lilly. Four authors declared being employees and stockholders of Eli Lilly.

Source: Thyssen JP et al. Maintained improvement in physician- and patient-reported outcomes with baricitinib in adults with moderate-to-severe atopic dermatitis who were treated for up to 104 weeks in a randomized trial. J Dermatolog Treat. 2023;34(1):2190430 (Apr 5). Doi: 10.1080/09546634.2023.2190430

Key clinical point: Baricitinib offers the flexibility of dose down-titration and improvement in atopic dermatitis (AD) signs and symptoms up to treatment week 104 in patients with moderate-to-severe AD.

Major finding: Among patients receiving 4 mg baricitinib, 51.2% and 47.6% achieved or maintained a validated Investigator’s Global Assessment for AD score of 0 or 1 and 82.1%, and 73.8% maintained an Eczema Area and Severity Index 75 response at weeks 52 and 104, respectively. The clinical response was maintained after down-titration to 2 mg baricitinib.

Study details: This sub-study of the BREEZE-AD3 trial included 168 patients with moderate-to-severe AD who were responders or partial responders to 4 mg baricitinib in originating studies and were re-assigned (1:1) to receive 4 or 2 mg baricitinib at week 52.

Disclosures: This study was funded by Eli Lilly and Company under license from Incyte Corporation. Some authors reported ties with various organizations, including Eli Lilly. Four authors declared being employees and stockholders of Eli Lilly.

Source: Thyssen JP et al. Maintained improvement in physician- and patient-reported outcomes with baricitinib in adults with moderate-to-severe atopic dermatitis who were treated for up to 104 weeks in a randomized trial. J Dermatolog Treat. 2023;34(1):2190430 (Apr 5). Doi: 10.1080/09546634.2023.2190430

Key clinical point: Baricitinib offers the flexibility of dose down-titration and improvement in atopic dermatitis (AD) signs and symptoms up to treatment week 104 in patients with moderate-to-severe AD.

Major finding: Among patients receiving 4 mg baricitinib, 51.2% and 47.6% achieved or maintained a validated Investigator’s Global Assessment for AD score of 0 or 1 and 82.1%, and 73.8% maintained an Eczema Area and Severity Index 75 response at weeks 52 and 104, respectively. The clinical response was maintained after down-titration to 2 mg baricitinib.

Study details: This sub-study of the BREEZE-AD3 trial included 168 patients with moderate-to-severe AD who were responders or partial responders to 4 mg baricitinib in originating studies and were re-assigned (1:1) to receive 4 or 2 mg baricitinib at week 52.

Disclosures: This study was funded by Eli Lilly and Company under license from Incyte Corporation. Some authors reported ties with various organizations, including Eli Lilly. Four authors declared being employees and stockholders of Eli Lilly.

Source: Thyssen JP et al. Maintained improvement in physician- and patient-reported outcomes with baricitinib in adults with moderate-to-severe atopic dermatitis who were treated for up to 104 weeks in a randomized trial. J Dermatolog Treat. 2023;34(1):2190430 (Apr 5). Doi: 10.1080/09546634.2023.2190430

Key clinical point: A dose of 4 mg baricitinib plus topical corticosteroids (TCS) demonstrated superior efficacy compared to placebo+TCS in pediatric patients with moderate-to-severe atopic dermatitis (AD), with the safety profile being consistent with previous studies involving adults with moderate-to-severe AD.

Major finding: At week 16, a significantly higher proportion of patients receiving 4 mg baricitinib+TCS vs placebo+TCS achieved a validated Investigator’s Global Assessment for AD score of 0 or 1 with a ≥2-point improvement (41.7% vs 16.4%; P < .0001); no significant difference was observed between the 2 mg/1 mg baricitinib and placebo groups. No new safety signals were reported.

Study details: This multicenter phase 3 study, BREEZE-AD-PEDS, included 483 pediatric patients aged 2 to <18 years with moderate-to-severe AD and inadequate response to TCS or systemic treatments who were randomly assigned to receive 4 mg baricitinib+TCS, 2 mg baricitinib+TCS, 1 mg baricitinib+TCS, or placebo+TCS.

Disclosures: Baricitinib was developed by Eli Lilly and Company, under license from Incyte Corporation. Some authors reported various ties, including employment and stock ownership, with Eli Lilly or others.

Source: Torrelo A et al. Efficacy and safety of baricitinib in combination with topical corticosteroids in pediatric patients with moderate-to-severe atopic dermatitis with inadequate response to topical corticosteroids: Results from a phase 3, randomized, double-blind, placebo-controlled study (BREEZE-AD PEDS). Br J Dermatol. 2023 (Mar 31). Doi: 10.1093/bjd/ljad096

Key clinical point: A dose of 4 mg baricitinib plus topical corticosteroids (TCS) demonstrated superior efficacy compared to placebo+TCS in pediatric patients with moderate-to-severe atopic dermatitis (AD), with the safety profile being consistent with previous studies involving adults with moderate-to-severe AD.

Major finding: At week 16, a significantly higher proportion of patients receiving 4 mg baricitinib+TCS vs placebo+TCS achieved a validated Investigator’s Global Assessment for AD score of 0 or 1 with a ≥2-point improvement (41.7% vs 16.4%; P < .0001); no significant difference was observed between the 2 mg/1 mg baricitinib and placebo groups. No new safety signals were reported.

Study details: This multicenter phase 3 study, BREEZE-AD-PEDS, included 483 pediatric patients aged 2 to <18 years with moderate-to-severe AD and inadequate response to TCS or systemic treatments who were randomly assigned to receive 4 mg baricitinib+TCS, 2 mg baricitinib+TCS, 1 mg baricitinib+TCS, or placebo+TCS.

Disclosures: Baricitinib was developed by Eli Lilly and Company, under license from Incyte Corporation. Some authors reported various ties, including employment and stock ownership, with Eli Lilly or others.

Source: Torrelo A et al. Efficacy and safety of baricitinib in combination with topical corticosteroids in pediatric patients with moderate-to-severe atopic dermatitis with inadequate response to topical corticosteroids: Results from a phase 3, randomized, double-blind, placebo-controlled study (BREEZE-AD PEDS). Br J Dermatol. 2023 (Mar 31). Doi: 10.1093/bjd/ljad096

Key clinical point: A dose of 4 mg baricitinib plus topical corticosteroids (TCS) demonstrated superior efficacy compared to placebo+TCS in pediatric patients with moderate-to-severe atopic dermatitis (AD), with the safety profile being consistent with previous studies involving adults with moderate-to-severe AD.

Major finding: At week 16, a significantly higher proportion of patients receiving 4 mg baricitinib+TCS vs placebo+TCS achieved a validated Investigator’s Global Assessment for AD score of 0 or 1 with a ≥2-point improvement (41.7% vs 16.4%; P < .0001); no significant difference was observed between the 2 mg/1 mg baricitinib and placebo groups. No new safety signals were reported.

Study details: This multicenter phase 3 study, BREEZE-AD-PEDS, included 483 pediatric patients aged 2 to <18 years with moderate-to-severe AD and inadequate response to TCS or systemic treatments who were randomly assigned to receive 4 mg baricitinib+TCS, 2 mg baricitinib+TCS, 1 mg baricitinib+TCS, or placebo+TCS.

Disclosures: Baricitinib was developed by Eli Lilly and Company, under license from Incyte Corporation. Some authors reported various ties, including employment and stock ownership, with Eli Lilly or others.

Source: Torrelo A et al. Efficacy and safety of baricitinib in combination with topical corticosteroids in pediatric patients with moderate-to-severe atopic dermatitis with inadequate response to topical corticosteroids: Results from a phase 3, randomized, double-blind, placebo-controlled study (BREEZE-AD PEDS). Br J Dermatol. 2023 (Mar 31). Doi: 10.1093/bjd/ljad096

Key clinical point: Lebrikizumab significantly improved the signs and symptoms of moderate-to-severe atopic dermatitis (AD) in adults and adolescents.

Major finding: At week 16, in the ADvocate1 and ADvocate2 trials, a significantly higher proportion of patients receiving lebrikizumab vs placebo achieved an Investigator’s Global Assessment score of 0 or 1 (43.1% vs 12.7% and 33.2% vs 10.8%, respectively) and a ≥75% improvement in the Eczema Area and Severity Index (58.8% vs 16.2% and 52.1% vs 18.1%, respectively; all P < .001). Most treatment-emergent adverse events were of mild-to-moderate severity.

Study details: Findings are from two identical phase 3 studies, ADvocate1 (n = 424) and ADvocate2 (n = 427), including adults (≥18 years) and adolescents (12 to <18 years) with moderate-to-severe AD who were randomly assigned to receive lebrikizumab or placebo over 16-week induction and 36-week maintenance periods.

Disclosures: This study was sponsored by Dermira, a wholly owned subsidiary of Eli Lilly and Company. Some authors reported various ties, including employment, with Eli Lilly or others.

Source: Silverberg JI et al for the ADvocate1 and ADvocate2 Investigators. Two phase 3 trials of lebrikizumab for moderate-to-severe atopic dermatitis. N Engl J Med. 2023;388(12):1080-1091 (Mar 15). Doi: 10.1056/NEJMoa2206714

Key clinical point: Lebrikizumab significantly improved the signs and symptoms of moderate-to-severe atopic dermatitis (AD) in adults and adolescents.

Major finding: At week 16, in the ADvocate1 and ADvocate2 trials, a significantly higher proportion of patients receiving lebrikizumab vs placebo achieved an Investigator’s Global Assessment score of 0 or 1 (43.1% vs 12.7% and 33.2% vs 10.8%, respectively) and a ≥75% improvement in the Eczema Area and Severity Index (58.8% vs 16.2% and 52.1% vs 18.1%, respectively; all P < .001). Most treatment-emergent adverse events were of mild-to-moderate severity.

Study details: Findings are from two identical phase 3 studies, ADvocate1 (n = 424) and ADvocate2 (n = 427), including adults (≥18 years) and adolescents (12 to <18 years) with moderate-to-severe AD who were randomly assigned to receive lebrikizumab or placebo over 16-week induction and 36-week maintenance periods.

Disclosures: This study was sponsored by Dermira, a wholly owned subsidiary of Eli Lilly and Company. Some authors reported various ties, including employment, with Eli Lilly or others.

Source: Silverberg JI et al for the ADvocate1 and ADvocate2 Investigators. Two phase 3 trials of lebrikizumab for moderate-to-severe atopic dermatitis. N Engl J Med. 2023;388(12):1080-1091 (Mar 15). Doi: 10.1056/NEJMoa2206714

Key clinical point: Lebrikizumab significantly improved the signs and symptoms of moderate-to-severe atopic dermatitis (AD) in adults and adolescents.

Major finding: At week 16, in the ADvocate1 and ADvocate2 trials, a significantly higher proportion of patients receiving lebrikizumab vs placebo achieved an Investigator’s Global Assessment score of 0 or 1 (43.1% vs 12.7% and 33.2% vs 10.8%, respectively) and a ≥75% improvement in the Eczema Area and Severity Index (58.8% vs 16.2% and 52.1% vs 18.1%, respectively; all P < .001). Most treatment-emergent adverse events were of mild-to-moderate severity.

Study details: Findings are from two identical phase 3 studies, ADvocate1 (n = 424) and ADvocate2 (n = 427), including adults (≥18 years) and adolescents (12 to <18 years) with moderate-to-severe AD who were randomly assigned to receive lebrikizumab or placebo over 16-week induction and 36-week maintenance periods.

Disclosures: This study was sponsored by Dermira, a wholly owned subsidiary of Eli Lilly and Company. Some authors reported various ties, including employment, with Eli Lilly or others.

Source: Silverberg JI et al for the ADvocate1 and ADvocate2 Investigators. Two phase 3 trials of lebrikizumab for moderate-to-severe atopic dermatitis. N Engl J Med. 2023;388(12):1080-1091 (Mar 15). Doi: 10.1056/NEJMoa2206714

Among patients with unresectable desmoplastic melanoma (DM), a prospective trial showed that single-agent treatment with the programmed death 1 (PD-1) inhibitor pembrolizumab led to a dramatic overall response rate.

The findings could represent a new standard of treatment for this extremely rare tumor.

The study was inspired by a previous retrospective analysis which found an overall response rate of 77% and a complete response of 32% to anti–PD-1 monotherapy.

The ORR is about double what is seen in melanoma more generally, according to Kari Kendra, MD, PhD, who presented the study at the annual meeting of the American Association for Cancer Research.

“Our study was a positive study. Of note, in the retrospective study, they saw a complete response rate of 32%, which was amazingly similar to what we found. [The findings support] the use of single agent anti–PD-1 immunotherapy as first line treatment for most patients with unresectable desmoplastic melanoma. [There was 89% overall response and we saw] dramatic responses across the board,” said Dr. Kendra, who is a medical oncologist at Ohio State University Wexner Medical Center, Columbus.

The findings drew a strong reaction. “In a rare tumor session, to see response curves like that, it’s just outstanding,” said the session’s cochair Brian Van Tine, MD, PhD, who is a professor of medical oncology at Washington University in St. Louis.

“This really is one of the highest tumor response rates to immunotherapy that we are seeing in any cancer. And I think may also highlight the fact that we shouldn’t think of all cutaneous melanomas as one disease, given the heterogeneity in tumor responses based on some of the pathologic and molecular characteristics,” said Zeynep Aroglu, MD, who served as a discussant but was also one of the investigators who enrolled patients for the trial.

Desmoplastic melanoma represents about 4% of all cutaneous melanoma diagnoses, and its unique pathology can make it difficult to diagnose. That often leads to a late diagnosis, according to Dr. Aroglu. They typically occur in elderly patients, in the head and neck area, and are associated with sun exposure. DM also tends to have a high mutation burden, Dr. Aroglu said during the session.

It remains to be seen why there is such a high response rate in this tumor type, even among tumor types with mutation burdens that are nearly as high. DM tumors are often driven by neurofibromatosis type 1, but other tumors driven by NF-1 don’t have as high of a response rate to immunotherapy. The tumor environment could also play a role, she said.

“Is it a combination of all these factors? I think some of the ongoing analysis of tumor samples that Dr. Kendra mentioned may help to answer some of these questions,” Dr. Aroglu continued.

She also noted that the melanoma field is increasingly turning to combination of anti–PD-1 therapy with agents like that target LAG3 or CTLA4. Such combinations can achieve higher response rates, but at a cost of higher rates of grade 3-4 adverse events than anti–PD-1 inhibitors alone. “I wonder if for desmoplastic melanomas in light of this data, do we consider de-escalating therapy, given these very high response rates to PD-1 alone, given also the elderly age of many of these patients, because even the PD-1–LAG3 combo still has a higher rate of toxicity than PD-1 monotherapy. Perhaps the immunotherapy combinations can be reserved for those rare desmoplastic patients who are resistant to PD-1 alone,” said Dr. Aroglu.
 

Study details and adverse events

Twenty-seven patients were enrolled in the study; 93% were male, all were White, and 22% had elevated baseline lactate dehydrogenase. About 63% had disease located in the head and neck area, 33% experienced a complete response (P < .001), and 56% had a partial response for an ORR of 89%. The result surpassed the primary endpoint target of at least a 20% complete response rate.

The 2-year progression-free survival was 74%, and 2-year overall survival was 89%. The most common toxicities were fatigue (56%), diarrhea (33%), maculopapular rash (30%), pruritus (22%), anemia (19%), arthralgia (19%), and decreased lymphocyte count (19%). There were two grade 4 adverse events: a lipase increase and a lung infection accompanied by sepsis.

The researchers also carried out whole exome sequencing of biopsies and found that 67% had NF-1 loss of function mutations.

Dr. Aroglu has served on advisory boards for Pfizer, Array, Eisai, Genentech, Natera, Novartis, OncoSec, and Regeneron. She has received research support from Boehringer Ingelheim, Pfizer, and Novartis. Dr. Kendra has received institutional support from Bristol Myers-Squibb and trial support from CheckMate Pharmaceuticals, GlaxoSmithKline, Immunocore, Medspace, Merck, Novartis, and Varian Medical Systems. Dr. Van Tine has financial relationships with a wide range of pharmaceutical companies.

Among patients with unresectable desmoplastic melanoma (DM), a prospective trial showed that single-agent treatment with the programmed death 1 (PD-1) inhibitor pembrolizumab led to a dramatic overall response rate.

The findings could represent a new standard of treatment for this extremely rare tumor.

The study was inspired by a previous retrospective analysis which found an overall response rate of 77% and a complete response of 32% to anti–PD-1 monotherapy.

The ORR is about double what is seen in melanoma more generally, according to Kari Kendra, MD, PhD, who presented the study at the annual meeting of the American Association for Cancer Research.

“Our study was a positive study. Of note, in the retrospective study, they saw a complete response rate of 32%, which was amazingly similar to what we found. [The findings support] the use of single agent anti–PD-1 immunotherapy as first line treatment for most patients with unresectable desmoplastic melanoma. [There was 89% overall response and we saw] dramatic responses across the board,” said Dr. Kendra, who is a medical oncologist at Ohio State University Wexner Medical Center, Columbus.

The findings drew a strong reaction. “In a rare tumor session, to see response curves like that, it’s just outstanding,” said the session’s cochair Brian Van Tine, MD, PhD, who is a professor of medical oncology at Washington University in St. Louis.

“This really is one of the highest tumor response rates to immunotherapy that we are seeing in any cancer. And I think may also highlight the fact that we shouldn’t think of all cutaneous melanomas as one disease, given the heterogeneity in tumor responses based on some of the pathologic and molecular characteristics,” said Zeynep Aroglu, MD, who served as a discussant but was also one of the investigators who enrolled patients for the trial.

Desmoplastic melanoma represents about 4% of all cutaneous melanoma diagnoses, and its unique pathology can make it difficult to diagnose. That often leads to a late diagnosis, according to Dr. Aroglu. They typically occur in elderly patients, in the head and neck area, and are associated with sun exposure. DM also tends to have a high mutation burden, Dr. Aroglu said during the session.

It remains to be seen why there is such a high response rate in this tumor type, even among tumor types with mutation burdens that are nearly as high. DM tumors are often driven by neurofibromatosis type 1, but other tumors driven by NF-1 don’t have as high of a response rate to immunotherapy. The tumor environment could also play a role, she said.

“Is it a combination of all these factors? I think some of the ongoing analysis of tumor samples that Dr. Kendra mentioned may help to answer some of these questions,” Dr. Aroglu continued.

She also noted that the melanoma field is increasingly turning to combination of anti–PD-1 therapy with agents like that target LAG3 or CTLA4. Such combinations can achieve higher response rates, but at a cost of higher rates of grade 3-4 adverse events than anti–PD-1 inhibitors alone. “I wonder if for desmoplastic melanomas in light of this data, do we consider de-escalating therapy, given these very high response rates to PD-1 alone, given also the elderly age of many of these patients, because even the PD-1–LAG3 combo still has a higher rate of toxicity than PD-1 monotherapy. Perhaps the immunotherapy combinations can be reserved for those rare desmoplastic patients who are resistant to PD-1 alone,” said Dr. Aroglu.
 

Study details and adverse events

Twenty-seven patients were enrolled in the study; 93% were male, all were White, and 22% had elevated baseline lactate dehydrogenase. About 63% had disease located in the head and neck area, 33% experienced a complete response (P < .001), and 56% had a partial response for an ORR of 89%. The result surpassed the primary endpoint target of at least a 20% complete response rate.

The 2-year progression-free survival was 74%, and 2-year overall survival was 89%. The most common toxicities were fatigue (56%), diarrhea (33%), maculopapular rash (30%), pruritus (22%), anemia (19%), arthralgia (19%), and decreased lymphocyte count (19%). There were two grade 4 adverse events: a lipase increase and a lung infection accompanied by sepsis.

The researchers also carried out whole exome sequencing of biopsies and found that 67% had NF-1 loss of function mutations.

Dr. Aroglu has served on advisory boards for Pfizer, Array, Eisai, Genentech, Natera, Novartis, OncoSec, and Regeneron. She has received research support from Boehringer Ingelheim, Pfizer, and Novartis. Dr. Kendra has received institutional support from Bristol Myers-Squibb and trial support from CheckMate Pharmaceuticals, GlaxoSmithKline, Immunocore, Medspace, Merck, Novartis, and Varian Medical Systems. Dr. Van Tine has financial relationships with a wide range of pharmaceutical companies.

Among patients with unresectable desmoplastic melanoma (DM), a prospective trial showed that single-agent treatment with the programmed death 1 (PD-1) inhibitor pembrolizumab led to a dramatic overall response rate.

The findings could represent a new standard of treatment for this extremely rare tumor.

The study was inspired by a previous retrospective analysis which found an overall response rate of 77% and a complete response of 32% to anti–PD-1 monotherapy.

The ORR is about double what is seen in melanoma more generally, according to Kari Kendra, MD, PhD, who presented the study at the annual meeting of the American Association for Cancer Research.

“Our study was a positive study. Of note, in the retrospective study, they saw a complete response rate of 32%, which was amazingly similar to what we found. [The findings support] the use of single agent anti–PD-1 immunotherapy as first line treatment for most patients with unresectable desmoplastic melanoma. [There was 89% overall response and we saw] dramatic responses across the board,” said Dr. Kendra, who is a medical oncologist at Ohio State University Wexner Medical Center, Columbus.

The findings drew a strong reaction. “In a rare tumor session, to see response curves like that, it’s just outstanding,” said the session’s cochair Brian Van Tine, MD, PhD, who is a professor of medical oncology at Washington University in St. Louis.

“This really is one of the highest tumor response rates to immunotherapy that we are seeing in any cancer. And I think may also highlight the fact that we shouldn’t think of all cutaneous melanomas as one disease, given the heterogeneity in tumor responses based on some of the pathologic and molecular characteristics,” said Zeynep Aroglu, MD, who served as a discussant but was also one of the investigators who enrolled patients for the trial.

Desmoplastic melanoma represents about 4% of all cutaneous melanoma diagnoses, and its unique pathology can make it difficult to diagnose. That often leads to a late diagnosis, according to Dr. Aroglu. They typically occur in elderly patients, in the head and neck area, and are associated with sun exposure. DM also tends to have a high mutation burden, Dr. Aroglu said during the session.

It remains to be seen why there is such a high response rate in this tumor type, even among tumor types with mutation burdens that are nearly as high. DM tumors are often driven by neurofibromatosis type 1, but other tumors driven by NF-1 don’t have as high of a response rate to immunotherapy. The tumor environment could also play a role, she said.

“Is it a combination of all these factors? I think some of the ongoing analysis of tumor samples that Dr. Kendra mentioned may help to answer some of these questions,” Dr. Aroglu continued.

She also noted that the melanoma field is increasingly turning to combination of anti–PD-1 therapy with agents like that target LAG3 or CTLA4. Such combinations can achieve higher response rates, but at a cost of higher rates of grade 3-4 adverse events than anti–PD-1 inhibitors alone. “I wonder if for desmoplastic melanomas in light of this data, do we consider de-escalating therapy, given these very high response rates to PD-1 alone, given also the elderly age of many of these patients, because even the PD-1–LAG3 combo still has a higher rate of toxicity than PD-1 monotherapy. Perhaps the immunotherapy combinations can be reserved for those rare desmoplastic patients who are resistant to PD-1 alone,” said Dr. Aroglu.
 

Study details and adverse events

Twenty-seven patients were enrolled in the study; 93% were male, all were White, and 22% had elevated baseline lactate dehydrogenase. About 63% had disease located in the head and neck area, 33% experienced a complete response (P < .001), and 56% had a partial response for an ORR of 89%. The result surpassed the primary endpoint target of at least a 20% complete response rate.

The 2-year progression-free survival was 74%, and 2-year overall survival was 89%. The most common toxicities were fatigue (56%), diarrhea (33%), maculopapular rash (30%), pruritus (22%), anemia (19%), arthralgia (19%), and decreased lymphocyte count (19%). There were two grade 4 adverse events: a lipase increase and a lung infection accompanied by sepsis.

The researchers also carried out whole exome sequencing of biopsies and found that 67% had NF-1 loss of function mutations.

Dr. Aroglu has served on advisory boards for Pfizer, Array, Eisai, Genentech, Natera, Novartis, OncoSec, and Regeneron. She has received research support from Boehringer Ingelheim, Pfizer, and Novartis. Dr. Kendra has received institutional support from Bristol Myers-Squibb and trial support from CheckMate Pharmaceuticals, GlaxoSmithKline, Immunocore, Medspace, Merck, Novartis, and Varian Medical Systems. Dr. Van Tine has financial relationships with a wide range of pharmaceutical companies.

Time for my periodic reminder about your Occupational Health and Safety Administration (OSHA) obligations. The health care field still has the most work-related illness and injury reports of any industry in the United States, and OSHA standards are in place to minimize potential workplace incidents.

Now might be a good time to get out your OSHA logs, walk through your office, and confirm that you remain in compliance with all the applicable regulations. Even if you hold regular safety meetings (which all too often is not the case), the occasional comprehensive review is always a good idea, and could save you a bundle in fines.

For starters, do you have an official OSHA poster, enumerating employee rights and explaining how to file complaints? Every office must have one posted in plain sight, and it is the first thing an OSHA inspector will look for. You can download one from OSHA’s website or order one at no charge by calling 800-321-OSHA.

The poster discusses the “general standards” that all workplaces must comply with to avoid work-related illnesses and injuries. The standards most applicable to medical offices are those dealing with personal protective equipment (PPE), bloodborne pathogens, hazard communication, and – increasingly, of late – ionizing radiation.

Physicians have become all too familiar with the PPE standard as a result of the COVID pandemic. Ironically, OSHA considers PPE a less acceptable means of employee protection than the other standards, as safe work practices should always supersede safety equipment. Nevertheless, employers must have a PPE program in place to train employees on what equipment is necessary, and under which conditions.

You also need a written exposure control plan for bloodborne pathogens. It should document your use of such protective equipment as gloves, face and eye protection, needle guards, and gowns, and your implementation of universal precautions – and it is supposed to be updated annually, to reflect changes in technology. You must provide all at-risk employees with hepatitis B vaccine at no cost to them. You also must provide and pay for appropriate medical treatment and follow-up after any exposure to a dangerous pathogen.

You need not adopt every new safety device as it comes on the market, but you should document which ones you are using – and which you pass up – and why. For example, you and your employees may decide not to purchase a new safety needle because you don’t think it will improve safety, or that it will be more trouble than it’s worth; but you should document how you arrived at that decision, and why you feel that your current protocol is as good or better.

The hazard communication (or right-to-know) standard involves compiling a list of hazardous substances, which all employees have a right to know about. Keep in mind that OSHA’s list includes alcohol, hydrogen peroxide, acetone, liquid nitrogen, and other substances that you might not consider particularly dangerous, but are nevertheless classified as “hazardous.” For each substance, your employees must have access to the manufacturer-supplied Material Safety Data Sheet, which outlines the proper procedures for working with a specific material, and for handling and containing it in a spill or other emergency.

If your office has x-ray equipment, or you are considering one of the new image-guided superficial radiotherapy machines, you must be in compliance with the ionizing radiation standard, which entails shielding, radiation monitors, and clear labeling of equipment.

Other, more general regulations include the physical setup of your office. Everyone must be able to evacuate quickly in case of fire or other emergencies. At a minimum, you (or the owner of the office building) are expected to establish exit routes to accommodate all employees and to post easily visible evacuation diagrams.

Examine all electrical devices and their power sources. All electrically powered equipment – medical, clerical, or anything else in the office – must operate safely. Pay particular attention to the way wall outlets are set up. Make sure each outlet has sufficient power to run the equipment plugged into it, and that circuit breakers are present and functioning. And beware the common situation of too many gadgets running off a single circuit.

Other components of the rule include proper containment of regulated medical waste, identification of regulated-waste containers, sharps disposal boxes, and periodic employee training regarding all of these things.

Federal OSHA regulations do not require medical and dental offices to keep an injury and illness log, as other businesses must; but your state may have a requirement that supersedes the federal law. Check with your state, or with your local OSHA office, regarding any such requirements.

It is a mistake to take OSHA regulations lightly; failure to comply with them can result in stiff penalties running into many thousands of dollars. How can you be certain you are complying with all the rules? The easiest and cheapest way is to call your local OSHA office and request an inspection. Why would you do that? Because OSHA issues no citations during voluntary inspections as long as you agree to remedy any violations they find.

Dr. Eastern practices dermatology and dermatologic surgery in Belleville, N.J. He is the author of numerous articles and textbook chapters, and is a longtime monthly columnist for Dermatology News. Write to him at [email protected].

Time for my periodic reminder about your Occupational Health and Safety Administration (OSHA) obligations. The health care field still has the most work-related illness and injury reports of any industry in the United States, and OSHA standards are in place to minimize potential workplace incidents.

Now might be a good time to get out your OSHA logs, walk through your office, and confirm that you remain in compliance with all the applicable regulations. Even if you hold regular safety meetings (which all too often is not the case), the occasional comprehensive review is always a good idea, and could save you a bundle in fines.

For starters, do you have an official OSHA poster, enumerating employee rights and explaining how to file complaints? Every office must have one posted in plain sight, and it is the first thing an OSHA inspector will look for. You can download one from OSHA’s website or order one at no charge by calling 800-321-OSHA.

The poster discusses the “general standards” that all workplaces must comply with to avoid work-related illnesses and injuries. The standards most applicable to medical offices are those dealing with personal protective equipment (PPE), bloodborne pathogens, hazard communication, and – increasingly, of late – ionizing radiation.

Physicians have become all too familiar with the PPE standard as a result of the COVID pandemic. Ironically, OSHA considers PPE a less acceptable means of employee protection than the other standards, as safe work practices should always supersede safety equipment. Nevertheless, employers must have a PPE program in place to train employees on what equipment is necessary, and under which conditions.

You also need a written exposure control plan for bloodborne pathogens. It should document your use of such protective equipment as gloves, face and eye protection, needle guards, and gowns, and your implementation of universal precautions – and it is supposed to be updated annually, to reflect changes in technology. You must provide all at-risk employees with hepatitis B vaccine at no cost to them. You also must provide and pay for appropriate medical treatment and follow-up after any exposure to a dangerous pathogen.

You need not adopt every new safety device as it comes on the market, but you should document which ones you are using – and which you pass up – and why. For example, you and your employees may decide not to purchase a new safety needle because you don’t think it will improve safety, or that it will be more trouble than it’s worth; but you should document how you arrived at that decision, and why you feel that your current protocol is as good or better.

The hazard communication (or right-to-know) standard involves compiling a list of hazardous substances, which all employees have a right to know about. Keep in mind that OSHA’s list includes alcohol, hydrogen peroxide, acetone, liquid nitrogen, and other substances that you might not consider particularly dangerous, but are nevertheless classified as “hazardous.” For each substance, your employees must have access to the manufacturer-supplied Material Safety Data Sheet, which outlines the proper procedures for working with a specific material, and for handling and containing it in a spill or other emergency.

If your office has x-ray equipment, or you are considering one of the new image-guided superficial radiotherapy machines, you must be in compliance with the ionizing radiation standard, which entails shielding, radiation monitors, and clear labeling of equipment.

Other, more general regulations include the physical setup of your office. Everyone must be able to evacuate quickly in case of fire or other emergencies. At a minimum, you (or the owner of the office building) are expected to establish exit routes to accommodate all employees and to post easily visible evacuation diagrams.

Examine all electrical devices and their power sources. All electrically powered equipment – medical, clerical, or anything else in the office – must operate safely. Pay particular attention to the way wall outlets are set up. Make sure each outlet has sufficient power to run the equipment plugged into it, and that circuit breakers are present and functioning. And beware the common situation of too many gadgets running off a single circuit.

Other components of the rule include proper containment of regulated medical waste, identification of regulated-waste containers, sharps disposal boxes, and periodic employee training regarding all of these things.

Federal OSHA regulations do not require medical and dental offices to keep an injury and illness log, as other businesses must; but your state may have a requirement that supersedes the federal law. Check with your state, or with your local OSHA office, regarding any such requirements.

It is a mistake to take OSHA regulations lightly; failure to comply with them can result in stiff penalties running into many thousands of dollars. How can you be certain you are complying with all the rules? The easiest and cheapest way is to call your local OSHA office and request an inspection. Why would you do that? Because OSHA issues no citations during voluntary inspections as long as you agree to remedy any violations they find.

Dr. Eastern practices dermatology and dermatologic surgery in Belleville, N.J. He is the author of numerous articles and textbook chapters, and is a longtime monthly columnist for Dermatology News. Write to him at [email protected].

Time for my periodic reminder about your Occupational Health and Safety Administration (OSHA) obligations. The health care field still has the most work-related illness and injury reports of any industry in the United States, and OSHA standards are in place to minimize potential workplace incidents.

Now might be a good time to get out your OSHA logs, walk through your office, and confirm that you remain in compliance with all the applicable regulations. Even if you hold regular safety meetings (which all too often is not the case), the occasional comprehensive review is always a good idea, and could save you a bundle in fines.

For starters, do you have an official OSHA poster, enumerating employee rights and explaining how to file complaints? Every office must have one posted in plain sight, and it is the first thing an OSHA inspector will look for. You can download one from OSHA’s website or order one at no charge by calling 800-321-OSHA.

The poster discusses the “general standards” that all workplaces must comply with to avoid work-related illnesses and injuries. The standards most applicable to medical offices are those dealing with personal protective equipment (PPE), bloodborne pathogens, hazard communication, and – increasingly, of late – ionizing radiation.

Physicians have become all too familiar with the PPE standard as a result of the COVID pandemic. Ironically, OSHA considers PPE a less acceptable means of employee protection than the other standards, as safe work practices should always supersede safety equipment. Nevertheless, employers must have a PPE program in place to train employees on what equipment is necessary, and under which conditions.

You also need a written exposure control plan for bloodborne pathogens. It should document your use of such protective equipment as gloves, face and eye protection, needle guards, and gowns, and your implementation of universal precautions – and it is supposed to be updated annually, to reflect changes in technology. You must provide all at-risk employees with hepatitis B vaccine at no cost to them. You also must provide and pay for appropriate medical treatment and follow-up after any exposure to a dangerous pathogen.

You need not adopt every new safety device as it comes on the market, but you should document which ones you are using – and which you pass up – and why. For example, you and your employees may decide not to purchase a new safety needle because you don’t think it will improve safety, or that it will be more trouble than it’s worth; but you should document how you arrived at that decision, and why you feel that your current protocol is as good or better.

The hazard communication (or right-to-know) standard involves compiling a list of hazardous substances, which all employees have a right to know about. Keep in mind that OSHA’s list includes alcohol, hydrogen peroxide, acetone, liquid nitrogen, and other substances that you might not consider particularly dangerous, but are nevertheless classified as “hazardous.” For each substance, your employees must have access to the manufacturer-supplied Material Safety Data Sheet, which outlines the proper procedures for working with a specific material, and for handling and containing it in a spill or other emergency.

If your office has x-ray equipment, or you are considering one of the new image-guided superficial radiotherapy machines, you must be in compliance with the ionizing radiation standard, which entails shielding, radiation monitors, and clear labeling of equipment.

Other, more general regulations include the physical setup of your office. Everyone must be able to evacuate quickly in case of fire or other emergencies. At a minimum, you (or the owner of the office building) are expected to establish exit routes to accommodate all employees and to post easily visible evacuation diagrams.

Examine all electrical devices and their power sources. All electrically powered equipment – medical, clerical, or anything else in the office – must operate safely. Pay particular attention to the way wall outlets are set up. Make sure each outlet has sufficient power to run the equipment plugged into it, and that circuit breakers are present and functioning. And beware the common situation of too many gadgets running off a single circuit.

Other components of the rule include proper containment of regulated medical waste, identification of regulated-waste containers, sharps disposal boxes, and periodic employee training regarding all of these things.

Federal OSHA regulations do not require medical and dental offices to keep an injury and illness log, as other businesses must; but your state may have a requirement that supersedes the federal law. Check with your state, or with your local OSHA office, regarding any such requirements.

It is a mistake to take OSHA regulations lightly; failure to comply with them can result in stiff penalties running into many thousands of dollars. How can you be certain you are complying with all the rules? The easiest and cheapest way is to call your local OSHA office and request an inspection. Why would you do that? Because OSHA issues no citations during voluntary inspections as long as you agree to remedy any violations they find.

Dr. Eastern practices dermatology and dermatologic surgery in Belleville, N.J. He is the author of numerous articles and textbook chapters, and is a longtime monthly columnist for Dermatology News. Write to him at [email protected].

Citrus bergamia (bergamot) is a fruit tree thought to originate in the Mediterranean area; its fruit has been a part of the diet in that region since the early 18th century.¹ Bergamot is known to confer antioxidant as well as anti-inflammatory activity, and yields proapoptotic effects in the sebaceous gland.^2,3 The plant contains the natural furocoumarin bergapten, which is also known as 5-methoxypsoralen.⁴

Antibacterial, anti-inflammatory, hypolipemic, and anticancer properties have been associated with bergapten, which is primarily found in bergamot essential oil and used effectively as a photosensitizing agent.⁵ In this capacity, bergamot oil has been used for photodynamic therapy of cutaneous conditions such as vitiligo.⁶ In fact, for several years 5-methoxypsoralen and 8-methoxypsoralen have been used to achieve acceptable clearance rates of psoriasis and vitiligo.⁷ This column focuses on bergapten, as well as the cutaneous conditions for which bergamot has been shown to have some benefits warranting application or further investigation.
 

Bergapten

In a 2021 literature review, Liang et al. cited the anti-inflammatory, antimicrobial, anticancer, and other salutary effects associated with bergapten. Based on numerous citations, they also cautioned about the phototoxicity of the compound combined with ultraviolet (UV) light while noting the photoactivation of bergapten for anticancer uses.⁴

The following year, Quetglas-Llabrés et al. acknowledged, in another literature review, the numerous preclinical and in vitro studies demonstrating the therapeutic activity of bergapten and highlighted clinical trials revealing notable lesion clearance rates of psoriasis or vitiligo imparted by oral or topical bergapten along with UV irradiation. Bergapten was also found to be effective as hypolipemic therapy.⁵

Anti-inflammatory topical uses

In a 2017 study by Han et al. of 10 essential oils, bergamot was among the investigated oils, all of which exhibited significant anti-proliferative activity in a preinflamed human dermal fibroblast system simulating chronic inflammation. Bergamot was among three essential oils that also suppressed protein molecules involved with inflammation, immune responses, and tissue remodeling, indicating anti-inflammatory and wound healing characteristics.⁸

More recently, Cristiano et al. reported that ultradeformable nanocarriers containing bergamot essential oil and ammonium glycyrrhizinate were demonstrated in healthy human volunteers to be characterized by the appropriate mean size, size distribution, surface charge, and long-term stability for topical administration. Topical administration on human volunteers also revealed greater activity of the combined agents as compared with a nanosystem loaded only with ammonium glycyrrhizinate. The researchers concluded that this combination of ingredients in ultradeformable vesicles shows potential as topical anti-inflammatory treatment.³

Acne

In a 2020 study using golden hamsters, Sun et al. assessed the effects of the juice and essential oils of bergamot and sweet orange on acne vulgaris engendered by excessive androgen secretion. Among 80 male hamsters randomly divided into 10 groups ranging from low to high doses, all results demonstrated improvement with treatment as seen by decreased growth rates of sebaceous glands, suppressed triglyceride accumulation, lowered inflammatory cytokine release, and apoptosis promotion in sebaceous glands. The authors noted that the essential oils yielded better dose-dependent effects than the juices.²

Psoriasis

In 2019, Perna et al. conducted a literature review on the effects of bergamot essential oil, extract, juice, and polyphenolic fraction on various health metrics. Thirty-one studies (20 involving humans with 1,709 subjects and 11 in rats and mice) were identified. Animal models indicated that bergamot essential oil (10 mg/kg or 20 mg/kg daily for 20 weeks) reduced psoriatic plaques, increased skin collagen content, and fostered hair growth and that bergamot juice (20 mg/kg) diminished proinflammatory cytokines. Human studies showed that bergamot extract and essential oil may reduce blood pressure and improve mental conditions.⁹

Vitiligo

In 2019, Shaaban et al. prepared elastic nanocarriers (spanlastics) to deliver psoralen-containing bergamot oil along with PUVB with the intention of harnessing melanogenic activity to treat vitiligo. Histopathologic assessment on rat skin was conducted before clinical treatment in patients with vitiligo. The spanlastics were deemed to be of suitable nanosize and deformable, yielding consistent bergamot oil release. The bergamot oil included in the nanocarrier was found to enhance photostability and photodynamic activity, with the researchers concluding that bergamot oil nanospanlastics with psoralen-UVB therapy shows potential as a vitiligo therapy.¹⁰

Two years later, Shaaban evaluated bergamot oil formulated in nanostructured lipid carriers as a photosensitizer for photodynamic treatment of vitiligo. The botanical oil was effectively used in the nanostructured lipid carriers with a gel consistency that delivered sustained release of the oil for 24 hours. Preclinical and clinical results in patients were encouraging for the topical photodynamic treatment of vitiligo, with the nanostructured lipid carriers improving the photostability and photodynamic activity of bergamot oil.⁶

Photoaging, photoprotection, and safety concerns

Three decades ago, an international cooperative study of the photophysical, photomutagenic, and photocarcinogenic characteristics of bergamot oil and the effect of UVA and UVB sunscreens found that UVB and UVA sunscreens at low concentration (0.5%-1%) in perfumes could not inhibit the phototoxicity of bergamot oil on human skin.¹¹

In a 2015 study assessing the impact of 38% bergamot polyphenolic fraction (a highly concentrated Citrus bergamia fruit extract) on UVB-generated photoaging, Nisticò et al. found that the bergamot compound dose-dependently protected HaCaT cells against UVB-caused oxidative stress and photoaging markers. Suggesting that the high-antioxidant bergamot polyphenolic fraction has potential for use in skin care formulations, the researchers added that the extract seems to induce antiproliferative, immune-modulating, and antiaging activity.¹²In 2022, Alexa et al. performed in vitro tests and found that natural preparations containing bergamot, orange, and clove essential oils do not significantly alter physiological skin parameters and were deemed safe for topical use. An emulsion with bergamot essential oil was also found to reduce the viability of oral squamous cell carcinoma cells.¹³

Conclusion

As a photosensitizing agent, bergamot has an established role in skin care. Beyond its niche role in treatments for vitiligo and psoriasis, this botanical product appears to show potential as an anti-inflammatory agent as well as an ingredient to combat photoaging and skin cancer. Much more research is needed to elucidate the possible wider benefits of this Mediterranean staple.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur in Miami. She founded the division of cosmetic dermatology at the University of Miami in 1997. The third edition of her bestselling textbook, “Cosmetic Dermatology,” was published in 2022. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Johnson & Johnson, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a SaaS company used to generate skin care routines in office and as an ecommerce solution. Write to her at [email protected].

References

1. Juber M. Health benefits of bergamot. WebMD. November 29, 2022. Accessed March 21, 2023.

2. Sun P et al. Mediators Inflamm. 2020 Oct 6;2020:8868107.

3. Cristiano MC et al. Biomedicines. 2022 Apr 30;10(5):1039.

4. Liang Y et al. Phytother Res. 2021 Nov;35(11):6131-47.

5. Quetglas-Llabrés MM et al. Oxid Med Cell Longev. 2022 Apr 25;2022:8615242.

6. Shaaban M et al. Expert Opin Drug Deliv. 2021 Jan;18(1):139-50.

7. McNeely W, Goa KL. Drugs. 1998 Oct;56(4):667-90.

8. Han X, Beaumont C, Stevens N. Biochim Open. 2017 Apr 26;5:1-7.

9. Perna S et al. Food Sci Nutr. 2019 Jan 25;7(2):369-84.

10. Shaaban M et al. Drug Deliv Transl Res. 2019 Dec;9(6):1106-16.

11. Dubertret L et al. J Photochem Photobiol B. 1990 Nov;7(2-4):251-9.

12. Nisticò S et al. J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3):723-8.

13. Alexa VT et al. Molecules. 2022 Feb 1;27(3):990.

Citrus bergamia (bergamot) is a fruit tree thought to originate in the Mediterranean area; its fruit has been a part of the diet in that region since the early 18th century.¹ Bergamot is known to confer antioxidant as well as anti-inflammatory activity, and yields proapoptotic effects in the sebaceous gland.^2,3 The plant contains the natural furocoumarin bergapten, which is also known as 5-methoxypsoralen.⁴

Antibacterial, anti-inflammatory, hypolipemic, and anticancer properties have been associated with bergapten, which is primarily found in bergamot essential oil and used effectively as a photosensitizing agent.⁵ In this capacity, bergamot oil has been used for photodynamic therapy of cutaneous conditions such as vitiligo.⁶ In fact, for several years 5-methoxypsoralen and 8-methoxypsoralen have been used to achieve acceptable clearance rates of psoriasis and vitiligo.⁷ This column focuses on bergapten, as well as the cutaneous conditions for which bergamot has been shown to have some benefits warranting application or further investigation.
 

Bergapten

In a 2021 literature review, Liang et al. cited the anti-inflammatory, antimicrobial, anticancer, and other salutary effects associated with bergapten. Based on numerous citations, they also cautioned about the phototoxicity of the compound combined with ultraviolet (UV) light while noting the photoactivation of bergapten for anticancer uses.⁴

The following year, Quetglas-Llabrés et al. acknowledged, in another literature review, the numerous preclinical and in vitro studies demonstrating the therapeutic activity of bergapten and highlighted clinical trials revealing notable lesion clearance rates of psoriasis or vitiligo imparted by oral or topical bergapten along with UV irradiation. Bergapten was also found to be effective as hypolipemic therapy.⁵

Anti-inflammatory topical uses

In a 2017 study by Han et al. of 10 essential oils, bergamot was among the investigated oils, all of which exhibited significant anti-proliferative activity in a preinflamed human dermal fibroblast system simulating chronic inflammation. Bergamot was among three essential oils that also suppressed protein molecules involved with inflammation, immune responses, and tissue remodeling, indicating anti-inflammatory and wound healing characteristics.⁸

More recently, Cristiano et al. reported that ultradeformable nanocarriers containing bergamot essential oil and ammonium glycyrrhizinate were demonstrated in healthy human volunteers to be characterized by the appropriate mean size, size distribution, surface charge, and long-term stability for topical administration. Topical administration on human volunteers also revealed greater activity of the combined agents as compared with a nanosystem loaded only with ammonium glycyrrhizinate. The researchers concluded that this combination of ingredients in ultradeformable vesicles shows potential as topical anti-inflammatory treatment.³

Acne

In a 2020 study using golden hamsters, Sun et al. assessed the effects of the juice and essential oils of bergamot and sweet orange on acne vulgaris engendered by excessive androgen secretion. Among 80 male hamsters randomly divided into 10 groups ranging from low to high doses, all results demonstrated improvement with treatment as seen by decreased growth rates of sebaceous glands, suppressed triglyceride accumulation, lowered inflammatory cytokine release, and apoptosis promotion in sebaceous glands. The authors noted that the essential oils yielded better dose-dependent effects than the juices.²

Psoriasis

In 2019, Perna et al. conducted a literature review on the effects of bergamot essential oil, extract, juice, and polyphenolic fraction on various health metrics. Thirty-one studies (20 involving humans with 1,709 subjects and 11 in rats and mice) were identified. Animal models indicated that bergamot essential oil (10 mg/kg or 20 mg/kg daily for 20 weeks) reduced psoriatic plaques, increased skin collagen content, and fostered hair growth and that bergamot juice (20 mg/kg) diminished proinflammatory cytokines. Human studies showed that bergamot extract and essential oil may reduce blood pressure and improve mental conditions.⁹

Vitiligo

In 2019, Shaaban et al. prepared elastic nanocarriers (spanlastics) to deliver psoralen-containing bergamot oil along with PUVB with the intention of harnessing melanogenic activity to treat vitiligo. Histopathologic assessment on rat skin was conducted before clinical treatment in patients with vitiligo. The spanlastics were deemed to be of suitable nanosize and deformable, yielding consistent bergamot oil release. The bergamot oil included in the nanocarrier was found to enhance photostability and photodynamic activity, with the researchers concluding that bergamot oil nanospanlastics with psoralen-UVB therapy shows potential as a vitiligo therapy.¹⁰

Two years later, Shaaban evaluated bergamot oil formulated in nanostructured lipid carriers as a photosensitizer for photodynamic treatment of vitiligo. The botanical oil was effectively used in the nanostructured lipid carriers with a gel consistency that delivered sustained release of the oil for 24 hours. Preclinical and clinical results in patients were encouraging for the topical photodynamic treatment of vitiligo, with the nanostructured lipid carriers improving the photostability and photodynamic activity of bergamot oil.⁶

Photoaging, photoprotection, and safety concerns

Three decades ago, an international cooperative study of the photophysical, photomutagenic, and photocarcinogenic characteristics of bergamot oil and the effect of UVA and UVB sunscreens found that UVB and UVA sunscreens at low concentration (0.5%-1%) in perfumes could not inhibit the phototoxicity of bergamot oil on human skin.¹¹

In a 2015 study assessing the impact of 38% bergamot polyphenolic fraction (a highly concentrated Citrus bergamia fruit extract) on UVB-generated photoaging, Nisticò et al. found that the bergamot compound dose-dependently protected HaCaT cells against UVB-caused oxidative stress and photoaging markers. Suggesting that the high-antioxidant bergamot polyphenolic fraction has potential for use in skin care formulations, the researchers added that the extract seems to induce antiproliferative, immune-modulating, and antiaging activity.¹²In 2022, Alexa et al. performed in vitro tests and found that natural preparations containing bergamot, orange, and clove essential oils do not significantly alter physiological skin parameters and were deemed safe for topical use. An emulsion with bergamot essential oil was also found to reduce the viability of oral squamous cell carcinoma cells.¹³

Conclusion

As a photosensitizing agent, bergamot has an established role in skin care. Beyond its niche role in treatments for vitiligo and psoriasis, this botanical product appears to show potential as an anti-inflammatory agent as well as an ingredient to combat photoaging and skin cancer. Much more research is needed to elucidate the possible wider benefits of this Mediterranean staple.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur in Miami. She founded the division of cosmetic dermatology at the University of Miami in 1997. The third edition of her bestselling textbook, “Cosmetic Dermatology,” was published in 2022. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Johnson & Johnson, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a SaaS company used to generate skin care routines in office and as an ecommerce solution. Write to her at [email protected].

References

1. Juber M. Health benefits of bergamot. WebMD. November 29, 2022. Accessed March 21, 2023.

2. Sun P et al. Mediators Inflamm. 2020 Oct 6;2020:8868107.

3. Cristiano MC et al. Biomedicines. 2022 Apr 30;10(5):1039.

4. Liang Y et al. Phytother Res. 2021 Nov;35(11):6131-47.

5. Quetglas-Llabrés MM et al. Oxid Med Cell Longev. 2022 Apr 25;2022:8615242.

6. Shaaban M et al. Expert Opin Drug Deliv. 2021 Jan;18(1):139-50.

7. McNeely W, Goa KL. Drugs. 1998 Oct;56(4):667-90.

8. Han X, Beaumont C, Stevens N. Biochim Open. 2017 Apr 26;5:1-7.

9. Perna S et al. Food Sci Nutr. 2019 Jan 25;7(2):369-84.

10. Shaaban M et al. Drug Deliv Transl Res. 2019 Dec;9(6):1106-16.

11. Dubertret L et al. J Photochem Photobiol B. 1990 Nov;7(2-4):251-9.

12. Nisticò S et al. J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3):723-8.

13. Alexa VT et al. Molecules. 2022 Feb 1;27(3):990.

Citrus bergamia (bergamot) is a fruit tree thought to originate in the Mediterranean area; its fruit has been a part of the diet in that region since the early 18th century.¹ Bergamot is known to confer antioxidant as well as anti-inflammatory activity, and yields proapoptotic effects in the sebaceous gland.^2,3 The plant contains the natural furocoumarin bergapten, which is also known as 5-methoxypsoralen.⁴

Antibacterial, anti-inflammatory, hypolipemic, and anticancer properties have been associated with bergapten, which is primarily found in bergamot essential oil and used effectively as a photosensitizing agent.⁵ In this capacity, bergamot oil has been used for photodynamic therapy of cutaneous conditions such as vitiligo.⁶ In fact, for several years 5-methoxypsoralen and 8-methoxypsoralen have been used to achieve acceptable clearance rates of psoriasis and vitiligo.⁷ This column focuses on bergapten, as well as the cutaneous conditions for which bergamot has been shown to have some benefits warranting application or further investigation.
 

Bergapten

In a 2021 literature review, Liang et al. cited the anti-inflammatory, antimicrobial, anticancer, and other salutary effects associated with bergapten. Based on numerous citations, they also cautioned about the phototoxicity of the compound combined with ultraviolet (UV) light while noting the photoactivation of bergapten for anticancer uses.⁴

The following year, Quetglas-Llabrés et al. acknowledged, in another literature review, the numerous preclinical and in vitro studies demonstrating the therapeutic activity of bergapten and highlighted clinical trials revealing notable lesion clearance rates of psoriasis or vitiligo imparted by oral or topical bergapten along with UV irradiation. Bergapten was also found to be effective as hypolipemic therapy.⁵

Anti-inflammatory topical uses

In a 2017 study by Han et al. of 10 essential oils, bergamot was among the investigated oils, all of which exhibited significant anti-proliferative activity in a preinflamed human dermal fibroblast system simulating chronic inflammation. Bergamot was among three essential oils that also suppressed protein molecules involved with inflammation, immune responses, and tissue remodeling, indicating anti-inflammatory and wound healing characteristics.⁸

More recently, Cristiano et al. reported that ultradeformable nanocarriers containing bergamot essential oil and ammonium glycyrrhizinate were demonstrated in healthy human volunteers to be characterized by the appropriate mean size, size distribution, surface charge, and long-term stability for topical administration. Topical administration on human volunteers also revealed greater activity of the combined agents as compared with a nanosystem loaded only with ammonium glycyrrhizinate. The researchers concluded that this combination of ingredients in ultradeformable vesicles shows potential as topical anti-inflammatory treatment.³

Acne

In a 2020 study using golden hamsters, Sun et al. assessed the effects of the juice and essential oils of bergamot and sweet orange on acne vulgaris engendered by excessive androgen secretion. Among 80 male hamsters randomly divided into 10 groups ranging from low to high doses, all results demonstrated improvement with treatment as seen by decreased growth rates of sebaceous glands, suppressed triglyceride accumulation, lowered inflammatory cytokine release, and apoptosis promotion in sebaceous glands. The authors noted that the essential oils yielded better dose-dependent effects than the juices.²

Psoriasis

In 2019, Perna et al. conducted a literature review on the effects of bergamot essential oil, extract, juice, and polyphenolic fraction on various health metrics. Thirty-one studies (20 involving humans with 1,709 subjects and 11 in rats and mice) were identified. Animal models indicated that bergamot essential oil (10 mg/kg or 20 mg/kg daily for 20 weeks) reduced psoriatic plaques, increased skin collagen content, and fostered hair growth and that bergamot juice (20 mg/kg) diminished proinflammatory cytokines. Human studies showed that bergamot extract and essential oil may reduce blood pressure and improve mental conditions.⁹

Vitiligo

In 2019, Shaaban et al. prepared elastic nanocarriers (spanlastics) to deliver psoralen-containing bergamot oil along with PUVB with the intention of harnessing melanogenic activity to treat vitiligo. Histopathologic assessment on rat skin was conducted before clinical treatment in patients with vitiligo. The spanlastics were deemed to be of suitable nanosize and deformable, yielding consistent bergamot oil release. The bergamot oil included in the nanocarrier was found to enhance photostability and photodynamic activity, with the researchers concluding that bergamot oil nanospanlastics with psoralen-UVB therapy shows potential as a vitiligo therapy.¹⁰

Two years later, Shaaban evaluated bergamot oil formulated in nanostructured lipid carriers as a photosensitizer for photodynamic treatment of vitiligo. The botanical oil was effectively used in the nanostructured lipid carriers with a gel consistency that delivered sustained release of the oil for 24 hours. Preclinical and clinical results in patients were encouraging for the topical photodynamic treatment of vitiligo, with the nanostructured lipid carriers improving the photostability and photodynamic activity of bergamot oil.⁶

Photoaging, photoprotection, and safety concerns

Three decades ago, an international cooperative study of the photophysical, photomutagenic, and photocarcinogenic characteristics of bergamot oil and the effect of UVA and UVB sunscreens found that UVB and UVA sunscreens at low concentration (0.5%-1%) in perfumes could not inhibit the phototoxicity of bergamot oil on human skin.¹¹

In a 2015 study assessing the impact of 38% bergamot polyphenolic fraction (a highly concentrated Citrus bergamia fruit extract) on UVB-generated photoaging, Nisticò et al. found that the bergamot compound dose-dependently protected HaCaT cells against UVB-caused oxidative stress and photoaging markers. Suggesting that the high-antioxidant bergamot polyphenolic fraction has potential for use in skin care formulations, the researchers added that the extract seems to induce antiproliferative, immune-modulating, and antiaging activity.¹²In 2022, Alexa et al. performed in vitro tests and found that natural preparations containing bergamot, orange, and clove essential oils do not significantly alter physiological skin parameters and were deemed safe for topical use. An emulsion with bergamot essential oil was also found to reduce the viability of oral squamous cell carcinoma cells.¹³

Conclusion

As a photosensitizing agent, bergamot has an established role in skin care. Beyond its niche role in treatments for vitiligo and psoriasis, this botanical product appears to show potential as an anti-inflammatory agent as well as an ingredient to combat photoaging and skin cancer. Much more research is needed to elucidate the possible wider benefits of this Mediterranean staple.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur in Miami. She founded the division of cosmetic dermatology at the University of Miami in 1997. The third edition of her bestselling textbook, “Cosmetic Dermatology,” was published in 2022. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Johnson & Johnson, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a SaaS company used to generate skin care routines in office and as an ecommerce solution. Write to her at [email protected].

References

1. Juber M. Health benefits of bergamot. WebMD. November 29, 2022. Accessed March 21, 2023.

2. Sun P et al. Mediators Inflamm. 2020 Oct 6;2020:8868107.

3. Cristiano MC et al. Biomedicines. 2022 Apr 30;10(5):1039.

4. Liang Y et al. Phytother Res. 2021 Nov;35(11):6131-47.

5. Quetglas-Llabrés MM et al. Oxid Med Cell Longev. 2022 Apr 25;2022:8615242.

6. Shaaban M et al. Expert Opin Drug Deliv. 2021 Jan;18(1):139-50.

7. McNeely W, Goa KL. Drugs. 1998 Oct;56(4):667-90.

8. Han X, Beaumont C, Stevens N. Biochim Open. 2017 Apr 26;5:1-7.

9. Perna S et al. Food Sci Nutr. 2019 Jan 25;7(2):369-84.

10. Shaaban M et al. Drug Deliv Transl Res. 2019 Dec;9(6):1106-16.

11. Dubertret L et al. J Photochem Photobiol B. 1990 Nov;7(2-4):251-9.

12. Nisticò S et al. J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3):723-8.

13. Alexa VT et al. Molecules. 2022 Feb 1;27(3):990.

PHOENIX – Rapid, effective, and well-tolerated treatment of small cutaneous neurofibromas (cNF) without surgery or scarring is possible, with some tumors completely clearing after only one treatment, according to preliminary results of an ongoing prospective trial that compared several treatment modalities.

“Neurofibromatosis type 1 is the most common single-gene disease of mankind, but there is so much we have yet to learn about it,” study author Patricia Richey, MD, who practices Mohs surgery and cosmetic dermatology in Washington, D.C., said in an interview in advance of the annual conference of the American Society for Laser Medicine and Surgery, where she presented the results during an abstract session. Dr. Richey also conducts research for the Wellman Center for Photomedicine and the Dermatology Laser and Cosmetic Center at Massachusetts General Hospital, Boston, and is working with R. Rox Anderson, MD, director of the Wellman Center, on this project. In his words, she said, “the lack of better treatments for cNF is a ‘problem worth solving.’ ”

Four treatments vs. controls

For the study, Dr. Richey and colleagues enrolled 19 adults with a total of 307 cNFs measuring 2-4 mm in size to receive one of four treatments: electrocautery with an insulated radiofrequency needle; 755-nm alexandrite laser with negative pressure (8-mm spot size, 100 J/cm² fluence, 3-ms pulse duration); 980-nm diode laser (delivered via 8-mm sapphire skin-contact window), and intratumoral injection of 10 mg/mL deoxycholic acid at a volume approximately equal to that of the tumor. The average age of the participants was 49 years and 15 were female.

The investigators applied 5% lidocaine/prilocaine for 40 minutes to treatment sites before randomizing the tumors to treatment or to the control arm (no treatment). They compared safety, tolerability (including pain scores), and efficacy of each modality as measured by the change in cNF volume/height via three-dimensional imaging and clinical improvement via physician assessment at 6 months. All 19 participants have completed the 6-month assessment.

All modalities reduced or eliminated some of the cNFs by 6 months after treatment, with statistically significant reductions in height and volume across all four treatments. A wide variation of responses was observed. Specifically, the mean tumor volume changes for each modality, compared with controls, were –33.4% versus –5.1% among those treated with the 755-nm alexandrite laser; –24.9% versus –9.2% among those treated with the 980-nm diode laser, –23.3% versus –0.8% among those treated with insulated-needle radiofrequency coagulation, and –29.4% versus –3.7% among those treated with deoxycholic acid.

The variation in responses “may be due to histologic diversity of cNF or may indicate a need for more fine-tuned dosimetry, or a combination,” Dr. Richey said. “Our future trials will address this. We will also be treating all skin types in our upcoming trials.”

No adverse events categorized as higher than grade 2 occurred in any of the treatment groups, and no signs of regrowth or growth stimulation have been observed to date.

Tolerability of treatments

As for general tolerability, the 980-nm laser treatment caused moderate to severe pain; the alexandrite laser caused mild pain; insulated-needle radiofrequency coagulation caused mild pain, though more than deoxycholic acid injections or alexandrite laser, and pain associated with the deoxycholic acid injections was minimal.

When residual neurofibroma tumor was present histologically, its appearance was similar to that of untreated tumors in controls. There was no evidence of atypia, mitosis, or tumor inflammation, and mild fibrosis was present at the sites of prior tumor.

“It was surprising that all four modalities did work to some extent,” Dr. Richey said, noting that the lack of ulceration with deoxycholic acid injection “was pleasantly surprising.” Treatment with the 980-nm diode laser “was a bit more painful than we anticipated.”

The positive results of this trial has raised “more questions for us to answer. We have three additional trials in the works to fine tune these treatments and optimize dose/delivery, with the end goal of treating younger people.”

Dr. Richey said that she was “amazed” by how motivated the enrollees were to participate in the trial, noting that many patients with cNF undergo general anesthesia to have dozens of tumors surgically removed at once. “They pay $10,000-$20,000 on average out of pocket, as this surgery is considered cosmetic,” she said.

“This very important study could lead to effective, relatively noninvasive, therapy for small neurofibromas,” said Jeffrey S. Dover, MD, codirector of SkinCare Physicians in Chestnut Hill, Mass., who was not involved with the study and was asked to comment on the results.

“Remarkably, all four treatments worked to varying degrees, but of all the treatments, the selective alexandrite laser appeared to achieve the best results. Further study will be needed to see just how effective these treatments are, and to determine the best and safest treatment parameters. Given how common this autosomal dominant disease is, and how disfiguring neurofibromas become as they enlarge, a well-tolerated noninvasive nonsurgical treatment with limited side effects is highly sought after.”

The study, which was named the best clinical abstract at the meeting, was supported by the Neurofibromatosis Therapeutic Acceleration Program. Dr. Anderson is supported in part as the Lancer Endowed Chair in Dermatology at MGH. Dr. Dover reported having no relevant disclosures.

 

PHOENIX – Rapid, effective, and well-tolerated treatment of small cutaneous neurofibromas (cNF) without surgery or scarring is possible, with some tumors completely clearing after only one treatment, according to preliminary results of an ongoing prospective trial that compared several treatment modalities.

“Neurofibromatosis type 1 is the most common single-gene disease of mankind, but there is so much we have yet to learn about it,” study author Patricia Richey, MD, who practices Mohs surgery and cosmetic dermatology in Washington, D.C., said in an interview in advance of the annual conference of the American Society for Laser Medicine and Surgery, where she presented the results during an abstract session. Dr. Richey also conducts research for the Wellman Center for Photomedicine and the Dermatology Laser and Cosmetic Center at Massachusetts General Hospital, Boston, and is working with R. Rox Anderson, MD, director of the Wellman Center, on this project. In his words, she said, “the lack of better treatments for cNF is a ‘problem worth solving.’ ”

Four treatments vs. controls

For the study, Dr. Richey and colleagues enrolled 19 adults with a total of 307 cNFs measuring 2-4 mm in size to receive one of four treatments: electrocautery with an insulated radiofrequency needle; 755-nm alexandrite laser with negative pressure (8-mm spot size, 100 J/cm² fluence, 3-ms pulse duration); 980-nm diode laser (delivered via 8-mm sapphire skin-contact window), and intratumoral injection of 10 mg/mL deoxycholic acid at a volume approximately equal to that of the tumor. The average age of the participants was 49 years and 15 were female.

The investigators applied 5% lidocaine/prilocaine for 40 minutes to treatment sites before randomizing the tumors to treatment or to the control arm (no treatment). They compared safety, tolerability (including pain scores), and efficacy of each modality as measured by the change in cNF volume/height via three-dimensional imaging and clinical improvement via physician assessment at 6 months. All 19 participants have completed the 6-month assessment.

All modalities reduced or eliminated some of the cNFs by 6 months after treatment, with statistically significant reductions in height and volume across all four treatments. A wide variation of responses was observed. Specifically, the mean tumor volume changes for each modality, compared with controls, were –33.4% versus –5.1% among those treated with the 755-nm alexandrite laser; –24.9% versus –9.2% among those treated with the 980-nm diode laser, –23.3% versus –0.8% among those treated with insulated-needle radiofrequency coagulation, and –29.4% versus –3.7% among those treated with deoxycholic acid.

The variation in responses “may be due to histologic diversity of cNF or may indicate a need for more fine-tuned dosimetry, or a combination,” Dr. Richey said. “Our future trials will address this. We will also be treating all skin types in our upcoming trials.”

No adverse events categorized as higher than grade 2 occurred in any of the treatment groups, and no signs of regrowth or growth stimulation have been observed to date.

Tolerability of treatments

As for general tolerability, the 980-nm laser treatment caused moderate to severe pain; the alexandrite laser caused mild pain; insulated-needle radiofrequency coagulation caused mild pain, though more than deoxycholic acid injections or alexandrite laser, and pain associated with the deoxycholic acid injections was minimal.

When residual neurofibroma tumor was present histologically, its appearance was similar to that of untreated tumors in controls. There was no evidence of atypia, mitosis, or tumor inflammation, and mild fibrosis was present at the sites of prior tumor.

“It was surprising that all four modalities did work to some extent,” Dr. Richey said, noting that the lack of ulceration with deoxycholic acid injection “was pleasantly surprising.” Treatment with the 980-nm diode laser “was a bit more painful than we anticipated.”

The positive results of this trial has raised “more questions for us to answer. We have three additional trials in the works to fine tune these treatments and optimize dose/delivery, with the end goal of treating younger people.”

Dr. Richey said that she was “amazed” by how motivated the enrollees were to participate in the trial, noting that many patients with cNF undergo general anesthesia to have dozens of tumors surgically removed at once. “They pay $10,000-$20,000 on average out of pocket, as this surgery is considered cosmetic,” she said.

“This very important study could lead to effective, relatively noninvasive, therapy for small neurofibromas,” said Jeffrey S. Dover, MD, codirector of SkinCare Physicians in Chestnut Hill, Mass., who was not involved with the study and was asked to comment on the results.

“Remarkably, all four treatments worked to varying degrees, but of all the treatments, the selective alexandrite laser appeared to achieve the best results. Further study will be needed to see just how effective these treatments are, and to determine the best and safest treatment parameters. Given how common this autosomal dominant disease is, and how disfiguring neurofibromas become as they enlarge, a well-tolerated noninvasive nonsurgical treatment with limited side effects is highly sought after.”

The study, which was named the best clinical abstract at the meeting, was supported by the Neurofibromatosis Therapeutic Acceleration Program. Dr. Anderson is supported in part as the Lancer Endowed Chair in Dermatology at MGH. Dr. Dover reported having no relevant disclosures.

 

PHOENIX – Rapid, effective, and well-tolerated treatment of small cutaneous neurofibromas (cNF) without surgery or scarring is possible, with some tumors completely clearing after only one treatment, according to preliminary results of an ongoing prospective trial that compared several treatment modalities.

“Neurofibromatosis type 1 is the most common single-gene disease of mankind, but there is so much we have yet to learn about it,” study author Patricia Richey, MD, who practices Mohs surgery and cosmetic dermatology in Washington, D.C., said in an interview in advance of the annual conference of the American Society for Laser Medicine and Surgery, where she presented the results during an abstract session. Dr. Richey also conducts research for the Wellman Center for Photomedicine and the Dermatology Laser and Cosmetic Center at Massachusetts General Hospital, Boston, and is working with R. Rox Anderson, MD, director of the Wellman Center, on this project. In his words, she said, “the lack of better treatments for cNF is a ‘problem worth solving.’ ”

Four treatments vs. controls

For the study, Dr. Richey and colleagues enrolled 19 adults with a total of 307 cNFs measuring 2-4 mm in size to receive one of four treatments: electrocautery with an insulated radiofrequency needle; 755-nm alexandrite laser with negative pressure (8-mm spot size, 100 J/cm² fluence, 3-ms pulse duration); 980-nm diode laser (delivered via 8-mm sapphire skin-contact window), and intratumoral injection of 10 mg/mL deoxycholic acid at a volume approximately equal to that of the tumor. The average age of the participants was 49 years and 15 were female.

The investigators applied 5% lidocaine/prilocaine for 40 minutes to treatment sites before randomizing the tumors to treatment or to the control arm (no treatment). They compared safety, tolerability (including pain scores), and efficacy of each modality as measured by the change in cNF volume/height via three-dimensional imaging and clinical improvement via physician assessment at 6 months. All 19 participants have completed the 6-month assessment.

All modalities reduced or eliminated some of the cNFs by 6 months after treatment, with statistically significant reductions in height and volume across all four treatments. A wide variation of responses was observed. Specifically, the mean tumor volume changes for each modality, compared with controls, were –33.4% versus –5.1% among those treated with the 755-nm alexandrite laser; –24.9% versus –9.2% among those treated with the 980-nm diode laser, –23.3% versus –0.8% among those treated with insulated-needle radiofrequency coagulation, and –29.4% versus –3.7% among those treated with deoxycholic acid.

The variation in responses “may be due to histologic diversity of cNF or may indicate a need for more fine-tuned dosimetry, or a combination,” Dr. Richey said. “Our future trials will address this. We will also be treating all skin types in our upcoming trials.”

No adverse events categorized as higher than grade 2 occurred in any of the treatment groups, and no signs of regrowth or growth stimulation have been observed to date.

Tolerability of treatments

As for general tolerability, the 980-nm laser treatment caused moderate to severe pain; the alexandrite laser caused mild pain; insulated-needle radiofrequency coagulation caused mild pain, though more than deoxycholic acid injections or alexandrite laser, and pain associated with the deoxycholic acid injections was minimal.

When residual neurofibroma tumor was present histologically, its appearance was similar to that of untreated tumors in controls. There was no evidence of atypia, mitosis, or tumor inflammation, and mild fibrosis was present at the sites of prior tumor.

“It was surprising that all four modalities did work to some extent,” Dr. Richey said, noting that the lack of ulceration with deoxycholic acid injection “was pleasantly surprising.” Treatment with the 980-nm diode laser “was a bit more painful than we anticipated.”

The positive results of this trial has raised “more questions for us to answer. We have three additional trials in the works to fine tune these treatments and optimize dose/delivery, with the end goal of treating younger people.”

Dr. Richey said that she was “amazed” by how motivated the enrollees were to participate in the trial, noting that many patients with cNF undergo general anesthesia to have dozens of tumors surgically removed at once. “They pay $10,000-$20,000 on average out of pocket, as this surgery is considered cosmetic,” she said.

“This very important study could lead to effective, relatively noninvasive, therapy for small neurofibromas,” said Jeffrey S. Dover, MD, codirector of SkinCare Physicians in Chestnut Hill, Mass., who was not involved with the study and was asked to comment on the results.

“Remarkably, all four treatments worked to varying degrees, but of all the treatments, the selective alexandrite laser appeared to achieve the best results. Further study will be needed to see just how effective these treatments are, and to determine the best and safest treatment parameters. Given how common this autosomal dominant disease is, and how disfiguring neurofibromas become as they enlarge, a well-tolerated noninvasive nonsurgical treatment with limited side effects is highly sought after.”

The study, which was named the best clinical abstract at the meeting, was supported by the Neurofibromatosis Therapeutic Acceleration Program. Dr. Anderson is supported in part as the Lancer Endowed Chair in Dermatology at MGH. Dr. Dover reported having no relevant disclosures.