During the COVID-19 period, the GDM treatment model that was the most frequently used was a diabetic diet only (36 women, 49.3%), followed by basal insulin (25 women, 34.2%), intensive insulin therapy with multiple daily injections (MDI) (12 women, 16.4%), and short-acting insulin injection(s) to selected meal(s) (1 woman, 1.4%). This evidence concerns the gene INS and gestational diabetes.