TCF7L2 and type 2 diabetes mellitus: Still, recent identification by linkage and candidate gene analysis of calpain 10 (CAPN10) and transcription factor 7-like 2 (TCF7L2) as susceptibility genes for T2DM in Mexican Americans offers hope for the future discovery of T2DN-specific genetic traits in this same population [61, 62, 63, 64, 65, 66].