FTO and obesity due to melanocortin 4 receptor deficiency: rs10767664 (BDNF) and rs3751812 (FTO) provided the strongest evidence of an association with obesity with odds ratios of 1.923 (CI: 1.32–2.81, P = 0.00072) and 1.523 (CI: 1.08–2.15, P = 0.016), respectively.