KCNQ1 and type 2 diabetes mellitus: As shown in Table 2, 6 SNPs (rs13266634 from SLC30A8, rs10811661 from CDKN2A/CDKN2B, rs2237897, rs2237892 and rs2237895 from KCNQ1, rs1552224 from CENTD2) were consistently associated with type 2 diabetes risk, with P values less than 0.05.