VDR and type 2 diabetes mellitus: Another study by Ortlepp et al. [34] observed a significant association between the BsmI VDR genotype and fasting glucose, while Oh and Barrett-Connor [35] observed a significant association between the VDR 1544410 (BsmI) polymorphism and HOMA-IR levels among individuals with T2DM in the Rancho Bernando Cohort.