The following polymorphic markers showed statistically significant association with T2DM: rs5219 of the KCNJ11 gene, rs13266634 of the SLC30A8 gene, rs10811661 of the CDKN2B/2A gene, rs9465871, rs7756992 and rs10946398 of the CDKAL1 gene. The gene discussed is KCNJ11; the disease is type 2 diabetes mellitus.