Polymorphism of the HFE Gene Associated with Hereditary Hemochromatosis in Populations of Russia

Polymorphism of the HFE Gene Associated with Hereditary Hemochromatosis in Populations of Russia The incidence of hereditary hemochromatosis as well as the predisposition to the iron overload syndrome and sporadic porphyria cutanea tarda are currently believed to be associated with the inheritance of certain allelic variants of the HFE gene. Allele frequencies of the C282Y (845A) and H63D(187G) mutations in theHFE gene in human populations of different races are remarkably different, and the prevalence of the S65C (193T) mutation is still poorly studied. In the present study we estimated allele frequencies ofHFE mutations in Russians and in a number of Siberian ethnic indigenous populations. In Russians, the allele frequencies of the C282Y, H63D andS65C mutations were 3.7, 13.3 and 1.7%, respectively. These values were similar to those observed in populations of Europe. The C282Y mutation was not detected in the population samples of Siberian ethnic groups, including Mansis, Khantys (Finno-Ugric group), Altaians, and Nivkhs (Asians), suggesting that the frequency of this allele in the populations examined was lower than 1%. The frequency of the C282Y allele in the Tuvinian and Chukchi samples (Asians) constituted 0.45 and 0.8%, respectively. Furthermore, pedigree analysis of both identified Chukchi carriers discovered showed that some of their ancestors were from other ethnic groups. Low frequencies of this allelic variant were typical of many Eastern Asian populations, which were also characterized by rather low frequencies of the H63D variant. In contrast, in some ethnic groups of Western Siberia, the allelic frequency of the H63D mutation was rather high, constituting 8.5% in Altaians, 15.5% in Mansis, and 11.3% in Khantys. The frequency of this allele in Tuvinians, Nivkhs, and Chukchis constituted 5.0, 4.7, and 0.8%, respectively. These findings made it possible to estimate the proportion of individuals predisposed to the iron overload syndrome in different Russian ethnic groups. TheHFE allele frequency distribution patterns observed in the populations examined pointed to pre-Celtic appearance of the C282Y allele. It also provides an explanation of the evolutionary genetic relationships between Siberian ethnic groups and the contemporary populations of Eastern and Western Europe. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Polymorphism of the HFE Gene Associated with Hereditary Hemochromatosis in Populations of Russia

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Kluwer Academic Publishers-Plenum Publishers
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Biomedicine; Human Genetics
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