FTO and obesity due to melanocortin 4 receptor deficiency: The present work analyzed 175 genetic variants of FTO, of which only 34 were associated with any of the indicators of overweight and obesity, while only 16 of these variants showed differences in means according to the recessive model of the minor allele and 12 differences in the average of the indicators of overweight and obesity according to the genotype present, whereas only 4 passed the Bonferroni adjustment.