VDR and gestational diabetes: In the present study, we identified that the homozygous variant at VDR-rs10783219 in pregnant women was associated with higher PG1H (β = 0.24, p = 0.0212), and higher risks of GDM (TA/TT vs. AA: OR = 1.28) and GDM subtype 2 (TA/TT vs. AA: OR = 1.31).