Regarding β-globin mutant chromosomes, five mutations accounted for 94.16% of all β-thalassemia defects; these mutations, in the order of frequency, were CD41-42 (-CTTT) (43.76%), IVS-II-654(C>T) (22.26%), −28 (A>G) (15.36%), CD17 (A>T) (8.76%), and CD71-72 (+A) (4.25%). The gene discussed is ITGA2B; the disease is thalassemia.