No differences were observed between the study and control groups with respect to the remaining study parameters, i.e., underweight (37.75 vs. 29.2%, p = 0.25), overweight/obesity (20 vs. 23%, p = 0.74), growth impairment (G1, 26 vs. 19.6%, p = 0.29) and severe growth impairment (9.4 vs. 6%, p = 0.413), serum IgG elevation (14.3 vs. 8%, p = 0.2618), or total IgE elevation (approx. 23% in both groups). The gene discussed is IGHE; the disease is obesity due to melanocortin 4 receptor deficiency.