Phase 2a Study of the Safety, Tolerability, and Pharmacokinetics of Topically Administered PRN473 (SAR444727) in Patients With Mild to Moderate Atopic Dermatitis

This was a Ph2a study that consists of a double-blind, intra-patient placebo-controlled treatment period and an open-label uncontrolled treatment period with objective to evaluate the safety, tolerability, PK and preliminary efficacy of PRN473 in up to 40 patients with mild to moderate AD. On Day 1 (Baseline) of the Blinded Period, 2 target lesions with a difference no greater than 1 point in Total Sign Score (TSS) were randomly assigned to treatment in an intra-patient 1:1 manner, one lesion to PRN473 and the other to matching placebo. Participation took approximately 13 weeks, including up to a 5-week screening period, a 6-week treatment period, end of study assessments 1 day after last dose, and a safety follow-up phone call 2 weeks after last dose.