Ritlecitinib And Brepocitinib Demonstrate Significant Improvement In Scalp Alopecia Areata Biomarkers

    Emma Guttman‐Yassky, Ana B. Pavel, Aisleen Diaz, Ning Zhang, Ester Del Duca, Yeriel Estrada, Brett King, Anindita Banerjee, Christopher Banfield, Lori Ann Cox, Martin E. Dowty, Karen Page, Michael S. Vincent, Weidong Zhang, Linda Zhu, Elena Peeva
    TLDR Two drugs, ritlecitinib and brepocitinib, improved scalp hair loss condition markers.
    In a phase 2a randomized, double-blind, placebo-controlled trial involving 46 patients with alopecia areata (AA), ritlecitinib and brepocitinib significantly improved scalp biomarkers and reduced immune abnormalities. Ritlecitinib showed a more gradual improvement by week 24, while brepocitinib showed earlier changes by week 12. Both treatments led to significant reductions in inflammatory T cells and key inflammatory gene subsets, with clinical improvements measured by reductions in SALT scores. Patients with shorter episodes of active hair loss responded better to treatment. The study suggests that these JAK inhibitors could be effective therapeutic options for AA, but larger, long-term trials are needed to further assess their efficacy and safety.
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