The top four genotypes of thalassemia were –SEA/αα, CD17/N (14.81%); –SEA/–α3.7, CD26/N (14.81%); –α3.7/αα, CD17/N (11.11%); –SEA/αα, CD41–42/N (11.11%). The gene discussed is DPP4; the disease is thalassemia.