Biofrontera Announces Positive Results in Phase 3 Study of Ameluz® PDT for Actinic Keratoses on the Extremities, Neck, and Trunk, Meeting Primary Endpoint

Core Insights - Biofrontera Inc. announced positive Phase 3 clinical trial results for Ameluz PDT, demonstrating significant efficacy in treating actinic keratoses (AKs) on various body areas [1][5][9] Study Design and Results - The Phase 3 study was a multicenter, randomized, double-blind, vehicle-controlled trial involving 172 patients, with a 4:1 randomization to receive Ameluz gel or vehicle gel [2] - The primary endpoint was the "subject complete clearance rate," defined as the percentage of patients achieving complete clearance of all treated AK lesions 12 weeks post-treatment [4] - Ameluz PDT showed a complete clearance rate of 45.6% in the Full Analysis Set (FAS) compared to 16.7% for vehicle PDT (p < 0.0003) [5] - In the Per Protocol Set (PPS), complete clearance rates were 53.2% for Ameluz PDT versus 22.2% for vehicle PDT (p < 0.001) [5] Secondary Outcomes - Key secondary outcomes indicated a 73.1% clearance rate of AK lesions in the FAS and 80.3% in the PPS 12 weeks after treatment [6] - Clearance rates by anatomical location showed 38.5% (FAS) and 46.5% (PPS) on extremities, and 74.1% (FAS) and 78.3% (PPS) on neck and trunk [6] Patient Satisfaction and Cosmetic Outcomes - Ameluz PDT demonstrated favorable cosmetic outcomes, with 75.2% of investigators rating treated skin as "good" or "very good" [7] - 70.9% of patients reported similar assessments, and 86.3% indicated they would choose PDT again for future treatment [7] Future Plans - Based on the positive results, Biofrontera plans to submit a supplemental New Drug Application (sNDA) to the U.S. FDA in Q3 2026 [8]