Background and Aims: Cardiovascular (CV) risk is increased in people living with metabolic dysfunction-associated steatohepatitis (MASH). Non-invasive tests, such as Fibrosis-4 score (FIB-4), help stage patients with fibrotic MASH and predict overall CV- and liver-related mortality. In the SELECT CV outcome trial, patients treated with semaglutide had a 20% CV risk reduction versus placebo. We examined the CV benefits of semaglutide in a subgroup of participants at high risk of MASH.
Methods: In SELECT, 17,604 patients (≥45 years, BMI ≥27.0 kg/m2, with established CV disease, without diabetes) were enrolled. Patients were randomised 1:1 to once-weekly subcutaneous semaglutide 2.4 mg or placebo, plus standard-of-care recommendations for CV disease prevention. This subgroup analysis for 3-point major adverse CV event (MACE; non-fatal myocardial infarction, non-fatal stroke, CV death) was performed for patients with increased MASH risk (FIB-4 ≥1.3 for patients aged <65 years and FIB-4 ≥2.0 for patients ≥65 years), and for a second subgroup of patients of any age with advanced fibrosis (FIB-4 >2.67) and suspected MASH, respectively. Patients with medical history or co-medication for any non-MASH liver disease were excluded.
Results: Of the SELECT cohort, 3665 patients (20.8%) aged <65 years with FIB-4 ≥1.3 and aged ≥65 years with FIB-4 ≥2.0 were included in this analysis. A MACE occurred in 7.6% (n=140/1834) of semaglutide-treated patients (140/1834) and 9.6% (n=176/1831) of placebo-treated patients (hazard ratio [HR] 0.79; 95% confidence interval [CI]: 0.63;0.98; p<0.03). In the advanced fibrosis subgroup (n=475), 22 CV events occurred in 235 patients treated with semaglutide compared with 35 events in 240 placebo-treated patients (HR 0.64; 95% CI: 0.37;1.08; p=0.10).
Conclusions: Aligned with the SELECT trial primary analysis, use of semaglutide 2.4 mg in a subgroup of patients at high risk of fibrotic MASH as defined by FIB-4 produced a 21% reduction in MACE outcomes.