- Targeting Activin E may represent a novel therapeutic strategy for metabolic dysfunction-associated steatohepatitis (MASH) and obesity‑related metabolic dysfunction

- ARO-INHBE produced meaningful reductions in liver fat content as a monotherapy or in combination with low-dose tirzepatide in individuals with obesity with or without Type 2 Diabetes Mellitus (T2DM)

- Longer exposure to ARO-INHBE silencing resulted in continued improvements in visceral fat and liver fat from Week 12 to Week 24

Arrowhead Pharmaceuticals, Inc. (NASDAQ:ARWR) today presented interim results from a Phase 1/2a clinical trial of ARO-INHBE, the company's investigational RNA interference (RNAi) therapeutic being developed as a potential treatment for obesity and metabolic dysfunction-associated steatohepatitis (MASH). The data presented at the European Association for the Study of the Liver Congress (EASL 2026) demonstrate that ARO-INHBE treatment led to clinically meaningful reductions in liver fat as a monotherapy and in combination with low-dose tirzepatide, a GLP-1/GIP receptor co-agonist, in adults with obesity. Arrowhead is currently engaging with regulatory authorities on additional designs and endpoints for potential Phase 2 studies in MASH and obesity.