Rapidity of Improvement in Signs/Symptoms of Moderate-to-Severe Atopic Dermatitis by Body Region with Abrocitinib in the Phase 3 JADE COMPARE Study

INTRODUCTION: Atopic dermatitis (AD) can affect multiple body regions and is especially burdensome when involving exposed skin areas. Rapid, effective treatment of AD across body regions remains an unmet need, particularly for difficult-to-treat areas such as the head and neck area. We investigated the temporal and regional patterns of clinical improvement in AD with the use of abrocitinib, an orally available Janus kinase 1 selective inhibitor under development for the treatment of moderate-to-severe AD. METHODS: We performed a post hoc analysis of data from JADE COMPARE, a phase 3, multicenter, randomized, double-blind, double-dummy trial that evaluated the efficacy and safety of abrocitinib 200 mg once daily, abrocitinib 100 mg once daily, dupilumab 300 mg subcutaneous injection every 2 weeks, and placebo in adult patients with moderate-to-severe AD who were concomitantly receiving medicated topical therapy. Assessments included the Eczema Area and Severity Index (EASI) and SCORing Atopic Dermatitis (SCORAD) index. RESULTS: With abrocitinib 200 mg, time to ≥ 75% improvement in EASI (EASI-75) occurred at a median of 29 days across body regions, including the head and neck region. With abrocitinib 100 mg, EASI-75 response was achieved at a median of 30–32 days for the trunk and lower limbs, and at 56–57 days for the head and neck region and upper limbs. With dupilumab, EASI-75 response was achieved at a median of 43 days for the trunk and 57 days for other regions. EASI body region scores significantly improved with abrocitinib 200 mg and 100 mg versus placebo at week 2 (p < 0.0001 for all comparisons). Improvements with abrocitinib were maintained up to week 16. CONCLUSIONS: Rapid and persistent improvement in AD across all body regions was observed with abrocitinib treatment. Abrocitinib may be useful in patients with AD that affects difficult-to-treat anatomical areas or who require a rapid response. TRIAL REGISTRATION: Clinicaltrials.gov identifier: NCT03720470. GRAPHICAL ABSTRACT: [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13555-022-00694-1.