GLP-1RAs reduce MACE risk in Asian and White adults with diabetes or overweight
This meta-analysis pooled data from 74,703 adults (8,164 Asian, 4,036 Black or African American, and 62,503 White) with type 2 diabetes or overweight/obesity across multiple randomized placebo-controlled trials. The intervention was glucagon-like peptide-1 receptor agonists (GLP-1RAs) compared to placebo, with the primary outcome being major adverse cardiovascular events (MACE).
For MACE risk, GLP-1RAs showed a significant reduction in Asian populations (HR 0.73, 95% CI 0.63-0.85; p < 0.001) and White populations (HR 0.86, 95% CI 0.81-0.91; p < 0.001). In Black or African American populations, the point estimate suggested a similar reduction (HR 0.88) but this did not reach statistical significance (95% CI 0.67-1.15; p = 0.34). The ratio of hazard ratios indicated a significantly greater risk reduction in Asian versus White populations (RHR 0.84, 95% CI 0.71-0.98; p = 0.027), while the comparison between Asian and Black or African American populations favored Asian populations but was not statistically significant (RHR 0.81, 95% CI 0.57-1.16; p = 0.25).
Safety, tolerability, and adverse event data were not reported in this analysis. Key limitations include the observational nature of the subgroup comparisons by race/ethnicity, the smaller sample size for Black or African American participants, and lack of reported follow-up duration. The practice relevance is restrained; while GLP-1RAs show cardiovascular benefit in this population overall, the non-significant result in Black or African American participants and the differential effect size across groups highlight the need for cautious interpretation and further research to understand potential racial/ethnic variations in treatment response.