MTNR1B and gestational diabetes: To date, studies including newly two large-scale GWASs performed in east Asia and Finland have detected numerous GDM-associated SNPs (14, 15), for instance, MTNR1B gene rs10830963, CDKAL1 rs7766070, TCF7L2 rs34872471, CDKN2B rs1333051, CMIP rs2926003, and CPO rs1597916.