EPO and type 2 diabetes mellitus: Among the 1010 T2DM patients successfully genotyped for the three EPO polymorphisms, 413 (41%) were homozygous for the major alleles, 454 (45%) were triple heterozygotes, and 110 (11%) were homozygous for the minor alleles, while the remaining 33 patients (3%) had other genotype combinations.