GLP-1RAs and MASH: What the Data Show
This systematic review and meta-analysis evaluated whether FDA-approved GLP-1 receptor agonists (GLP-1RA) used for obesity and/or type 2 diabetes were associated with histologic improvement in patients with biopsy-confirmed metabolic dysfunction-associated steatohepatitis (MASH). The analysis included six randomized controlled trials with 1555 participants, comparing GLP-1RAs-mostly semaglutide, with some tirzepatide and liraglutide-against placebo. The primary findings showed that GLP-1RAs were associated with a higher rate of MASH resolution without worsening of fibrosis compared with placebo. They also improved several histologic measures, including steatosis, ballooning degeneration, lobular inflammation, and nonalcoholic fatty liver disease activity score.
Fibrosis improvement was more nuanced. Across all included studies, GLP-1RAs showed a trend toward at least one-stage fibrosis regression without worsening MASH, but the overall result did not reach statistical significance. However, when studies involving patients with cirrhosis were excluded, fibrosis regression was significantly greater with GLP-1RAs than placebo. The authors suggest the benefits are likely driven largely by weight loss and note that safety outcomes, including serious adverse events and discontinuation rates, were similar to placebo. Overall, the study supports GLP-1RAs as a promising therapeutic option for MASH, while emphasizing the need for more research across fibrosis stages.
Reference: Siranart N, Thompson CC, Jirapinyo P. Effect of glucagon-like peptide-1 receptor agonists on histologic MASH: a meta-analysis of randomized controlled trials. Hepatol Commun. 2026 Feb;10(2):e0871. doi: 10.1097/HC9.0000000000000871. PMID: 41543478.
Sarah Enslin
PA-C