IGF2BP2 and gestational diabetes: IGF2BP2 (rs4402960) There were 3 articles which studied the T allele of rs4402960 but meta-analysis did not identify any significant association of the variant with the increased risk of GDM (pooled OR 1.12, 95% CI 0.89–1.40, P = 0.353, Table 1 and Supplementary Figure 1).