Roche reports Phase II obesity data for petrelintide with 10.7% weight reduction at 42 weeks
SHERIDAN, WYOMING - March 13, 2026 - Roche has reported positive Phase II results for petrelintide, an amylin analog being developed for people living with overweight and obesity. According to the company, petrelintide delivered up to 10.7% mean body weight reduction at week 42 compared with 1.7% for placebo, with a p-value of less than 0.001. Roche also said the maximally effective dose showed placebo-like tolerability, with no vomiting cases and no treatment discontinuations due to gastrointestinal adverse events. For the obesity treatment market, the update is relevant because efficacy and tolerability remain central to prescribing, adherence and competitive positioning.