[Study of ABO blood group secretor type alpha(1,2)-fucosyltransferase gene polymorphism in Chinese]

Secretor gene (FUT2)-encoded secretor type alpha(1,2)-fucosyltransferase (Se enzyme) that regulates expression and secretion of ABO(H) antigens in epithelial cell of glands and body fluids. It has the extensive polymorphism and race specificity. In the present study, we investigated the distribution of the fusion gene of the FUT2 locus in 191 Manchu individuals from Liaoning Province and 208 Mongolian individuals from Inner Mongolia, and analyzed the polymorphism of the FUT2 gene in 90 unrelated Han Chinese from Shandong Province and 90 Mongolian from Inner Mongolia, respectively. The fusion gene was not found in the two investigated ethnic groups. The frequencies of G849A nonsense mutation in Shandong Han Chinese and Mongolian of Inner Mongolia individuals were the same, 0.0055.