[Analysis of Gene Mutation Types in 141 Cases of α-Thalassemia in Honghe Prefecture, Yunnan Province].

OBJECTIVE: To detecte the carrying rate, the type and distribution of α-Thalassemia gene mutation in Honghe Prefecture, Yunnan Province, and analyze the differences in average erythrocyte volume (MCV), mean erythrocyte hemoglobin content (MCH) and hemoglobin among different types of α-Thalassemia. METHODS: The DNA samples from small cell hypochromic carriers or anemia patients and women of childbearing age who underwent hematological screening in The First People's Hospital of Honghe State was from 2015 to 2019 were enrolled and analyzed, and the mutation types and frequency of alpha-thalassemia positive rate were diagnosed by PCR reverse dot blot or PCR fluorescence dissolution curve. RESULTS: (10.64%). The areas were mainly distributed in Mengzi (47.52%), followed by Jinping (17.02%). Ethnic groups were mainly distributed in Han nationality (49.65%), followed by Zhuang (15.60%), Yi (3.48%) and Dai (7.09%). The patients with double heterozygous mutation was slightly higher in Mengzi than that in Jinping County (4.26% vs 3.55%), the Dai (2.13%) showed Zhuang ethnic group (2.13%) had the relatively high incidence except the Hans, and showed the most serious anemia. CONCLUSION: , which is mainly distributed in Han, Zhuang and Dai ethnic groups in Mengzi, Jinping. The anemia index of HbH group is the most obvious, and it is significantly different from other groups.