Rhythm Pharmaceuticals Announces Additional Positive Data from Phase 3 TRANSCEND trial of Setmelanotide in Patients with Acquired Hypothalamic Obesity

Core Insights - Rhythm Pharmaceuticals announced positive data from its Phase 3 TRANSCEND trial for setmelanotide in patients with acquired hypothalamic obesity, indicating potential for the drug to be the first approved therapy for this condition [1][2] Group 1: Trial Data and Efficacy - The 52-week data from the trial showed a placebo-adjusted difference in BMI reduction of -18.8% across all patients (N=142), with a mean BMI reduction of -16.4% for those on setmelanotide compared to a +2.4% increase for placebo [5][6] - Among patients aged 12 and older (n=98), the setmelanotide group experienced an average weekly reduction of 2.5 points in hunger scores, compared to a 1.3-point reduction in the placebo group [6] Group 2: Regulatory Status - Rhythm's supplemental New Drug Application (sNDA) for setmelanotide is under review by the U.S. FDA, with a PDUFA goal date set for March 20, 2026 [2][5] - The European Medicines Agency (EMA) is reviewing a Type II variation submission for the Marketing Authorization Application (MAA) for the same indication, with an opinion expected in Q2 2026 [3] Group 3: Market Potential - Rhythm estimates there are approximately 10,000 patients with acquired hypothalamic obesity in the U.S., 10,000 in Europe, and between 5,000 to 8,000 in Japan [4] - The company is preparing to submit a full data package to Japan's Pharmaceuticals and Medical Devices Agency (PMDA) for marketing authorization [3]