{"title":"Topical Ruxolitinib for the Treatment of Hidradenitis Suppurativa.","authors":"Claire Fason, Stephen Tyring","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Hidradenitis suppurativa (HS) is a chronic, recurrent inflammatory skin disease characterized by painful nodules, abscesses, sinus tracts, and scarring, with significant impact on quality of life. Although biologics have expanded treatment options for moderate to severe disease, there are currently no approved therapies specifically indicated for mild HS. Emerging evidence implicates dysregulation of the Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway in HS pathophysiology, suggesting JAK inhibition as a promising therapeutic strategy. This review summarizes current evidence on JAK inhibition in HS, with a focus on topical ruxolitinib. Early clinical trials in patients with mild to moderate HS have demonstrated encouraging efficacy, including significant improvements in Hidradenitis Suppurativa Clinical Response (HiSCR) rates and histologic reductions in epidermal and dermal inflammation, alongside a favorable safety profile. Existing data support topical ruxolitinib as a promising, targeted, and potentially safer treatment option for early-stage HS.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"31 2","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147469325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Advances in the Management of Hyperhidrosis.","authors":"Morgan Parker, Mariana Phillips","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Hyperhidrosis (HH), a condition characterized by excessive sweating beyond thermoregulation, significantly impairs quality of life. Conventional medications to treat HH include aluminum chloride hexahydrate, systemic anticholinergics, and botulinum toxin injections. New treatments have emerged including glycopyrronium bromide, sofpironium bromide, targeted alkali thermolysis, and microwave devices. This paper reviews the mechanism of action, efficacy, safety, and practical considerations associated with these treatments.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"31 2","pages":"4-7"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147469327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fyona Okundia, Muna Shakhashiro, Stephen K. Tyring
{"title":"Icotrokinra: A Promising Oral IL-23 Receptor Inhibitor for Moderate-to-Severe Plaque Psoriasis.","authors":"Fyona Okundia, Muna Shakhashiro, Stephen K. Tyring","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Biologics have emerged in recent years as relatively safe and effective options for managing plaque psoriasis, however, a subset of patients remain reluctant to initiate biologic therapy. Icotrokinra is a novel, first-in-class oral peptide that targets the interleukin-23 receptor and has demonstrated a favorable safety and efficacy profile comparable to that of injectable biologics in individuals aged 12 years and older. This review summarizes the clinical trial data regarding the safety and efficacy of icotrokinra.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"31 1","pages":"4-7"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146012340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Deuruxolitinib for Alopecia Areata.","authors":"Alexander Robbins, Mariana Phillips","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Alopecia areata (AA), an autoimmune condition characterized by non-scarring hair loss, affects 2% of the United States population. AA is a CD8 T-cell driven autoimmune disease in which the cytokines interferon-gamma and interleukin-15 play a central role in disease progression. These pathways depend on Janus kinase (JAK) signaling, making JAK inhibitors an ideal therapeutic option in treating AA. Deuruxolitinib, an oral JAK inhibitor, was approved by the US Food and Drug Administration in July 2024, for the treatment of severe AA in adults. Deuruxolitinib is the third oral JAK inhibitor approved for the treatment of severe AA, the others being baricitinib and ritlecitinib. Deuruxolitinib's mechanism of action, clinical efficacy, and safety profile in the treatment of AA are reviewed.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"31 1","pages":"1"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146012343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Siddhartha Sood, Alim R Devani, Tiago Torres, Jensen Yeung, Vimal H Prajapati
{"title":"OX40 Ligand Inhibitors for Moderate-to-Severe Atopic Dermatitis: A Review of Phase II Clinical Trial Data.","authors":"Siddhartha Sood, Alim R Devani, Tiago Torres, Jensen Yeung, Vimal H Prajapati","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Atopic dermatitis (AD) is a common, chronic immune-mediated inflammatory skin disease. The OX40-OX40 ligand (OX40L) pathway has emerged as a novel therapeutic target. On this basis, three phase II clinical trials have been conducted to evaluate the efficacy and safety of three different OX40-OX40L inhibitors (amlitelimab, rocatinlimab, and telazorlimab) in moderate-to-severe AD. Herein, we review the published data from these studies.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"30 6","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145725944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christopher Guirguis, Lauren Ching, Mariana Phillips
{"title":"Neoadjuvant Immunotherapy in the Management of Cutaneous Squamous Cell Carcinoma.","authors":"Christopher Guirguis, Lauren Ching, Mariana Phillips","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Immunotherapy has shown promise in treating locally advanced, recurrent, and metastatic cutaneous squamous cell carcinoma. More recently, studies have shown the role of immunotherapy as neoadjuvant treatment in advanced disease for which surgery may not be curative or would be expected to result in functional or cosmetic morbidity. This paper reviews data showing the safety and efficacy of cemiplimab as neoadjuvant treatment in cutaneous squamous cell carcinoma. Early findings suggest that neoadjuvant immunotherapy may help improve surgical outcomes by reducing tumor burden before resection.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"30 6","pages":"10-11"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145725988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Faith Cormier, Irene Lara-Corrales, Maxwell Sauder, Rebecca Levy
{"title":"Therapeutic Advances in Neurofibromatosis Type 1: A Focus on Selumetinib.","authors":"Faith Cormier, Irene Lara-Corrales, Maxwell Sauder, Rebecca Levy","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Neurofibromatosis type 1 (NF1) is a genetic condition inherited in an autosomal dominant pattern, but with 50% of cases caused by de novo mutations. Neurofibromin, the gene product in NF1, regulates the RAS/MAPK pathway, and mutation can lead to cell proliferation and the development of tumours. NF1 often presents in childhood with cafe-au-lait macules, skinfold freckling, nervous system tumours, and phenotypically variable findings. Plexiform neurofibromas (PN), a type of peripheral nerve sheath tumour seen in NF1, are typically histologically benign. However, PN can cause significant physical disfigurement, pain, and decreased quality of life, and have historically been difficult to treat. Selumetinib, a MEK inhibitor inhibiting the RAS/MAPK pathway, was Health Canada approved in 2022 for the treatment of symptomatic, inoperable PN in individuals with NF1 aged 2 years and older. Phase 1 and 2 trials have demonstrated reduced tumour size, decreased disfigurement and pain, and increased quality of life.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"30 5","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145138778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Review of the Long-Term Safety and Efficacy of Upadacitinib in the Treatment of Atopic Dermatitis.","authors":"Mohamad R Taha, Stephen K Tyring","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Atopic dermatitis (AD) is a common inflammatory skin condition characterized by erythema and intense pruritus. A key pathway implicated in its pathogenesis is the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling pathway. Upadacitinib, a JAK inhibitor, has been approved for the treatment of moderate-to-severe AD. This review evaluates the long-term safety and efficacy of upadacitinib in AD, incorporating findings from the Measure Up 1 and Measure Up 2 phase 3 studies.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"30 5","pages":"5-7"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145138718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lebrikizumab for Moderate-to-Severe Atopic Dermatitis","authors":"Leah Johnston, Susan Poelman, Andrei Metelitsa","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin disease that impacts approximately 10-15% of the population in the United States and Canada. Lebrikizumab is a novel systemic human monoclonal immunoglobulin G4 antibody that inhibits the activity of interleukin-13. In June 2024, lebrikizumab was approved by Health Canada for the treatment of moderate-to-severe AD in adults and adolescents who are 12 years of age and older, followed by US Food and Drug Administration approval in September 2024. This review provides an overview of data from clinical trials on the efficacy and safety of lebrikizumab in adult patients.</p>","PeriodicalId":21829,"journal":{"name":"Skin therapy letter","volume":"30 4","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144708809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}