For example, Scuteri et al. [5] showed that SNP rs9930506 within FTO was associated with BMI, total body weight, and hip circumference; many variants have been reported to be associated with obesity, including rs9939609, rs1421085, rs8050136, rs17817449, and rs1121980. Here, FTO is linked to obesity due to melanocortin 4 receptor deficiency.