RBP4 and gestational diabetes: In the logistic regression analysis, SLC2A4 rs5435, rs222852, rs5418, and rs8082645; RBP4 rs3758539; PCK1 rs1042531, rs2236745, rs28359554, and rs707555; and PIK3R1 rs40419, rs1819987, rs34309, and rs6890176 were not associated with GDM, regardless of genotype and use of dominant model, recessive model, or additive model comparisons (Table S7).