Women who have a family history of diabetes, are from a high-risk racial/ethnic group (eg, South Asian), have a higher prepregnancy or postpartum body mass index (BMI) (>25 kg/m2), have a higher glucose or greater number of abnormal glucose values on prenatal glycemic screening, who are diagnosed with GDM earlier in pregnancy, or who require insulin during pregnancy are more likely to have prediabetes or type 2 diabetes on postpartum screening (7,13,28,36-41). This evidence concerns the gene INS and diabetes mellitus.