670 - Tapinarof cream 1% once daily is efficacious for the treatment of atopic dermatitis in patients with skin of color down to 2 years of age in two pivotal phase 3 trials

Authors

Andrew Alexis

Published

August 1, 2024

Abstract

Abstract Introduction Patients with atopic dermatitis (AD) and skin of color can have heterogeneous presentations and treatment responses. In the pivotal phase 3 ADORING 1 and ADORING 2 trials, tapinarof cream 1% once daily (QD) was significantly efficacious and well tolerated versus vehicle in adults and children down to 2 years of age with AD. Objective Here, we report analyses of efficacy by patients’ self-identified race and investigator-assessed Fitzpatrick skin type in ADORING 1 and 2. Methods In ADORING 1 and 2, patients with a Validated Investigator Global Assessment for Atopic DermatitisTM (vIGA-ADTM) score of ≥3 (moderate or severe), an Eczema Area and Severity Index score of ≥6, and body surface area involvement of 5–35% were randomized 2:1 to tapinarof cream or vehicle QD for 8 weeks. The primary efficacy endpoint was a vIGA-ADTM score of 0 (clear) or 1 (almost clear) and ≥2-grade improvement from baseline at Week 8. Secondary endpoints included proportion of patients with a ≥75% improvement in Eczema Area and Severity Index (EASI75). Results Of 407 and 406 randomized patients, 8.8–15.3% were Asian, 26.5–35.0% were Black or African American, 44.8–56.8% were White, and 2.7–5.2% were Other groups (including American Indian or Alaska Native, Native Hawaiian or Pacific Islander, or multiple races) across trials. Patients with Fitzpatrick skin types IV, V, and VI represented 23.8–25.1%, 20.6–22.2%, and 7.6–8.9%, respectively, of participants (&gt;50% in both trials). Across trials, vIGA-ADTM responses (ranges) for tapinarof versus vehicle were: Asian, 39.5–48.9% vs 3.7–18.5%; Black or African American, 43.1–47.0% vs 17.5–24.1%; White, 49.4–52.1% vs 12.2–14.5%; and Other, 26.0–44.8% vs 0.0–40.2%. EASI75 responses for tapinarof versus vehicle were: Asian, 47.6–76.6% vs 17.7–20.2%; Black or African American, 48.9–55.3% vs 25.7–30.0%; White, 61.4–67.8% vs 19.6–20.7%; and Other, 38.3–63.3% vs 0.0–40.6%. Similarly, high and consistent vIGA-ADTM and EASI75 responses were reported with tapinarof compared with vehicle for patients with Fitzpatrick skin types I–III and IV–VI. Conclusion Tapinarof cream 1% QD was consistently efficacious among all racial groups and Fitzpatrick skin types, including adults and children down to 2 years of age with skin of color, who comprised approximately 50% of patients in these trials.