VDR rs739837 was shown to be significantly associated with increased DM (T2DM and GDM) risk in the allele model (T vs. G: OR = 1.088; 95% CI: 1.018–1.163; P = 0.012) and dominant model (TT + GT vs. GG: OR = 1.095; 95% CI: 1.001–1.197; P = 0.047). This evidence concerns the gene VDR and gestational diabetes.