Genome-Wide Association Study of Hypoglycemia in Adults With Diabetes in the Million Veteran Program.

Raghavan S, Litkowski E, Jensen A, Charest B, Wang Z, Hui Q, Chen HC, Rhee MK, Leong A, Meigs JB, Lange L, Lange E, Reaven P, Hung A, Zhou J, Sun YV, Phillips LS, Million Veteran Program. Genome-Wide Association Study of Hypoglycemia in Adults With Diabetes in the Million Veteran Program. Diabetes. 2025 Sep 19 DOI: 10.2337/db25-0304.

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Abstract:

Genetic variants associated with hypoglycemia risk in individuals with medication-treated diabetes have not been evaluated genome-wide. The specific question we asked was whether common genetic variants are associated with hypoglycemia among individuals with diabetes treated with glucose-lowering medications. We found four genomic loci were associated with hypoglycemia in a genome-wide association study. One locus-on chromosome 6-was associated with hypoglycemia only in individuals with likely type 1 diabetes, and two loci-on chromosome 2 and chromosome 6-were associated with hypoglycemia only in the context of treatment with sulfonylureas (chromosome 2) or with insulin (chromosome 6). Genetic variants may help identify individuals with diabetes at increased hypoglycemia risk, but additional study is needed to address the clinical utility of genetic data to inform hypoglycemia risk.