
Diabetes & EndocrinologyCUBN Genemetformin
Genetic Variant in CUBN Gene Identified as Key Risk Factor for Metformin-Induced Vitamin B12 Deficiency
By MedXY|Apr 17, 2026
Researchers have identified a genetic variant in the cubilin gene (CUBN, rs1801222) that significantly increases the risk of metformin-induced vitamin B12 deficiency, with carriers of the AA genotype experiencing deficiency up to twice as f

