For the primary endpoint, retatrutide lowered A1C by an average of 1.7% to 2.0% across doses at 40 weeks in TRANSCEND-T2D-1 Participants taking retatrutide 12 mg lost an average of 36.6 lbs (16.8%) No weight loss plateau was observed with retatrutide, with participants continuing their weight loss trajectory through 40 weeks INDIANAPOLIS, March 19, 2026 /PRNewswire/ -- Eli Lilly and Company (NYSE: LLY) today announced positive topline results from TRANSCEND-T2D-1, a Phase 3 clinical trial evaluating the efficacy and safety of retatrutide, an investigational first-in-class GIP, GLP-1 and glucagon triple hormone receptor agonist, as an adjunct to diet and exercise. The trial enrolled adults diagnosed with type 2 diabetes with inadequate glycemic control with diet and exercise alone, and a mean duration of diabetes of 2.5 years.