As shown in Table 2, after adjustment for covariates, rs7756992 in CDKAL1, rs10811661 near CDKN2BAS, and rs2237895 in KCNQ1 were significantly associated with the risk for lean T2D (odds ratios [ORs] 1.20–1.28, P values 5.51 × 10−6 to 2.88 × 10−4), and these remained significant after Bonferroni correction for multiple comparisons (P < 2.00 × 10−3). Here, KCNQ1 is linked to type 2 diabetes mellitus.