GPCR Stock Soars 102% on Strong Phase II Obesity Data for Aleniglipron

Core Insights - Structure Therapeutics' shares surged 102.5% following positive top-line data from the ACCESS clinical program for aleniglipron, an investigational GLP-1 RA aimed at treating obesity and overweight patients with co-morbidities [1][3] - The 36-week phase IIb ACCESS study showed a placebo-adjusted mean weight reduction of 11.3% (27.3 lbs) at the highest 120 mg dose, meeting primary and secondary endpoints [3][4] - The ongoing ACCESS II study indicated even greater weight loss, with a 15.3% (35.5 lbs) reduction at the 240 mg dose, and sustained weight reduction observed through 44 weeks in the ACCESS OLE study [4][6] Company Developments - Structure Therapeutics plans to advance aleniglipron into phase III development, with a Type B end-of-phase 2 meeting with the FDA expected in the first half of 2026 [8][9] - The phase III study design will include a lower 2.5 mg starting dose and multiple dose levels up to 240 mg [9] - The company is also developing ANPA-0073, a phase II-ready APJR agonist for selective weight loss, alongside other obesity drug candidates in preclinical stages [10] Competitive Landscape - Eli Lilly and Novo Nordisk dominate the obesity treatment market, with their drugs Zepbound and Wegovy, respectively, experiencing stock declines following GPCR's positive results [12] - The U.S. obesity market is projected to reach $100 billion by 2030, prompting major players to optimize production and develop more effective GLP-1-based candidates [13] - Novo Nordisk is pursuing an oral version of Wegovy, while Eli Lilly is advancing several new molecules, including orforglipron and retatrutide, with regulatory applications expected soon [14][15]