APOC1 and gestational diabetes: Considering the results for apoC1 -317H1/H2 and rs4420688 as lipid and/or cardiometabolic disease-associated variants, and the total lack of studies exploring the association of these genetic variants with the risk of GDM, we conducted the present study by investigating whether apoC1–317 H1/H2 and rs4420638 polymorphisms were associated with GDM.