KCNQ1 and type 2 diabetes mellitus: SNPs rs13266634 (SLC30A8) and rs2237892 (KCNQ1) were nominally associated with IGR and statistically significantly associated with T2DM (P<00001); whereas, two SNPs rs1470579 and rs4402960 (IGF2BP2), and two SNPs rs5215 (KCNJ11) and rs7501939 (TCF2) were nominally associated with T2DM.