Phase 3 Trial of Efruxifermin for Adults With Non-Cirrhotic NASH and Liver Fibrosis

What this Trial Is About

Researchers are evaluating efruxifermin EFX in adults with non-cirrhotic nonalcoholic steatohepatitis NASH or metabolic dysfunction-associated steatohepatitis MASH who have liver fibrosis stage 2 or 3. This Phase 3, multi-center, randomized, double-blind, placebo-controlled study aims to assess the safety and efficacy of EFX compared with placebo. The trial includes about 1,650 participants divided into two cohorts based on liver biopsy characteristics and fibrosis stage. Participants will be randomly assigned to one of three groups EFX 28 mg, EFX 50 mg, or placebo, each given as a weekly subcutaneous injection. Cohort 1 will be evaluated over 52 weeks for histologic efficacy endpoints, while Cohort 2 will have assessments over 96 weeks. After these periods, participants may continue long-term treatment and clinical follow-up for up to approximately 240 weeks total. A follow-up visit will occur about 30 days after the last dose. During the study, participants will undergo liver biopsies, blood tests, and non-invasive assessments such as FibroScan and Enhanced Liver Fibrosis ELF score to monitor liver health and fibrosis. Researchers will track liver-related clinical outcomes, including liver events and survival, as well as safety and tolerability of the treatment. Participants who stop the study drug may still continue with scheduled assessments to support long-term safety and efficacy evaluations.

A Study Evaluating Efruxifermin in Subjects With Non-Cirrhotic Nonalcoholic Steatohepatitis (NASH)/Metabolic Dysfunction-Associated Steatohepatitis (MASH) and Fibrosis