There are 5 types that first appeared in Vietnam: G6PD Orissa, G6PD Valladolid, G6PD NanKang, G6PD Comibra Shunde and G6PD Taiwan2 Objective 2: Analysis of G6PD gene mutations in some families of pediatric patients From 25 families of 25 children with 127 people found: - 71 cases enzyme deficiency (88.7%) and 63/71 cases with genetic mutations in all 3 generations; With 12 mutations gene (G6PD Viangchan, Kaipping, Canton, Union, Gaohe, Chinese-5, Quing Yan, Orissa, Valladolid, NanKang, Địa Trung Hải, Taiwan2, Comibra Shunde).