TCF7L2 and type 2 diabetes mellitus: As shown in Table 4, the reported T2D risk allele of rs7756992 in CDKAL1, rs10811661 near CDKN2BAS, rs7903146 in TCF7L2, rs1111875 near HHEX, and rs2237895 in KCNQ1 were predisposed to both MetS T2D and non-MetS T2D compared with non-MetS controls.