The median values for PW from the GDM and control groups were, respectively: IgG1 (3.85 and 4.26, p = 0.2738), IgG2 (0.52 and 0.57, p = 0.1054), IgG3 (0.67 and 0.61, p = 0.7016) and IgG4 (0.66 and 0.76, p = 0.6736). The gene discussed is IGHG3; the disease is gestational diabetes.