A statistically significant positive correlation was observed between the weight gain during pregnancy and the concentration of IGF-2 in the peripheral blood of women with GDM (rho = 0.263; p = 0.0433), as well as between the concentration of IGF-1 (ng/mL) in the serum of umbilical cord blood of newborns delivered by women with GDM, and the newborn length soon after birth (rho = 0.285; p = 0.0327) (Figure 1). The gene discussed is IGF1; the disease is gestational diabetes.