To date, a GWA scan for T2D has not been conducted in the Han Chinese population, although the association of some known loci have been confirmed, including KCNQ1 and CDKAL1, CDKN2A-2B, MTNR1B, TCF7L2, HNF1β, and KCNJ11[42]–[47]. This evidence concerns the gene CDKAL1 and type 2 diabetes mellitus.