APOB and gestational diabetes: In all subjects, the TT + CT genotype subgroup had higher fasting Ins levels and HOMA-IR (P < 0.05), but lower SBP (P = 0.025) than the CC genotype subgroup; GDM status was associated with most of the parameters (P < 0.05) and an obvious interaction between the C-1054T variant and GDM status was observed in these parameters (P < 0.05) except for SBP, DBP, TC, HDL-C, apoB, and TAC (P > 0.05).