TCF7L2 and type 2 diabetes mellitus: These include PPARG, HNF1B(TCF2), TCF7L2, IGF2BP2, HHEX/IDE , KCNQ1, MTNR1B, ADAMTS9, THADA, and JAZF1. In one of the most recent studies of T2D genes using genome-wide trans-ancestry meta-analysis, seven novel loci were identified [59].