CDKN2A and type 2 diabetes mellitus: Associations between SNPs of CDKN2A/2B (ORrs10811661 = 0.67 [0.52–0.87], P = 0.002), IGFBP2 (ORrs4402960 = 1.25 [1.02–1.53], P = 0.03), SLC30A8 (ORrs13266634 = 0.76 [0.61–0.94], P = 0.01) and NGN3 (ORrs7923837 = 0.73 [0.59–0.91], P = 0.005) loci and T2D were identified.