H2 allele correlated with decreased levels of low-density lipoprotein cholesterol (LDL-C), apoB and lower atherogenic index (AI) in both groups, in addition to the GDM group also with lower total cholesterol (TC), whereas the G allele of rs4420638 correlated with increased triglyceride and decreased apoA1 levels. This evidence concerns the gene APOA1 and gestational diabetes.