IGF2BP2 and gestational diabetes: rs4402960 of IGF2BP2 was associated with GDM (OR = 1.21, 95% CI = 1.08–1.36, P = 0.001; Supplementary figure 1) in four studies (n = 8,732), also in the subgroup among East Asian diabetes mellitus patients (OR = 1.24, 95% CI = 1.07–1.44, P = 0.004).