Genetic variants in the FTO gene have consistently been reported to be associated with BMI [4], [5], [6], [7], [8] and diabetes [7], [15] in Europeans, but the results have been variable for replication in other ethnicities including Hispanics [8], [12], [14], Asian and Oceanic populations [12], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31], and African-Americans [8], [11], [12], [13], [14]. This evidence concerns the gene FTO and diabetes mellitus.