Glucagon-like Peptide-1 Receptor Agonists Are Associated With Improved Survival and Reduced Liver-Related Events in Patients With Type 2 Diabetes and Metabolic Dysfunction-Associated Liver Disease: A Large Real-World Retrospective Study

Abstract

Objectives: To evaluate whether glucagon-like peptide-1 receptor agonists (GLP-1 RAs) or pioglitazone (PGZ) are associated with improved survival, reduced liver-related outcomes (LROs), and better metabolic outcomes in patients with type 2 diabetes mellitus (T2DM) and metabolic dysfunction-associated liver disease (MASLD) or steatohepatitis (MASH).

Methods: We used the TriNetX platform to identify adults with T2DM and MASLD/MASH from 2006 onward (n = 558 075) using Internation Classification of Diseases codes. Patients with confounding liver diseases, overlapping study medications, or bariatric surgery were excluded. Three exclusive cohorts-GLP-1 RA, PGZ, and other antidiabetic agents (controls)-were formed. After 1:1 propensity score matching, time-to-event analyses were performed using Cox proportional hazards models and Kaplan-Meier methods.

Results: Among matched groups, GLP-1 RAs (n = 17 465) were associated with a 40.9% reduction in all-cause mortality versus controls (hazard ratio [HR] 0.59; P < .0001) and significantly lower rates of LRO (HR 0.77) and liver transplantation (HR 0.33). In contrast, PGZ (n = 1803) showed reduced LRO rates (HR 0.68) but not mortality. In cirrhotic patients, GLP-1 RA was linked to fewer transplant events but did not significantly reduce mortality. GLP-1 RA therapy noted greater reductions in body mass index and hemoglobin A1c relative to controls.

Conclusions: In this large real-world cohort, GLP-1 RA use was associated with improved survival and hepatic outcomes in T2DM patients with MASLD/MASH, particularly among those without established cirrhosis. PGZ exhibited hepatic benefits. These findings highlight the potential importance of further prospective studies to evaluate early GLP-1 RA therapy in this high-risk diabetic population with MASLD/MASH.

Keywords: GLP-1 receptor agonist; metabolic dysfunction-associated liver disease (MASLD); metabolic dysfunction-associated steatohepatitis (MASH); pioglitazone; real-world study; type 2 diabetes mellitus.