The level of I-FABP, as well as the level of anti-beta-lactoglobulin IgA were significantly higher in children at TP1 compared to women with a previous history of GDM (p=0.005; p=0.0087) and the level of IgG to beta-lactoglobulin was significantly higher in children at TP1 compared to women with a previous history of GDM (p<0.0001) and non-GDM women (p<0.0001). The gene discussed is CD79A; the disease is gestational diabetes.