Heterozygous carriers of the AATA(--AA) mutation exhibited an α–thalassemia phenotype with a mean MCV of 69.8 ± 3.07 fl and MCH of 22.2 ± 1.57 pg, which are consistent with findings reported by Harteveld [12] of the range of values of MCV being 71–74 fl and those for MCH being 24.0–23.6 pg. Here, PMCH is linked to alpha thalassemia spectrum.