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  • Title: EPAS1 Gene Polymorphisms Are Associated With High Altitude Polycythemia in Tibetans at the Qinghai-Tibetan Plateau.
    Author: Xu J, Yang YZ, Tang F, Ga Q, Tana W, Ge RL.
    Journal: Wilderness Environ Med; 2015 Sep; 26(3):288-94. PubMed ID: 25792003.
    Abstract:
    OBJECTIVE: To test the hypothesis that the polymorphisms in the EPAS1 gene are associated with the susceptibility to high altitude polycythemia (HAPC) in Tibetans at the Qinghai-Tibetan Plateau. METHODS: We enrolled 63 Tibetan HAPC patients and 131 matched healthy Tibetans as a control group, from the Yushu area in Qinghai where the altitude is greater than 3500 m. Eight single-nucleotide polymorphisms (SNPs) of the EPAS1 gene, including rs12619696, rs13420857, rs2881504, rs4953388, rs13419896, rs4953354, rs10187368, and rs7587138, were genotyped by the Sequenom MassARRAY SNP assay. RESULTS: The frequencies of the G allele of EPAS1 SNP rs13419896 were significantly higher in the HAPC group than in the control group (P < .05). Moreover, the A alleles of rs12619696 and rs4953354 were prevalent in the HAPC group, and their counterpart homozygotes were prevalent in the normal Tibetan group (P < .05). CONCLUSIONS: Compared with normal Tibetans, Tibetans with HAPC are maladapted and have a different haplotype in EPAS1 SNPs rs12619696, rs13419896, and rs4953354.
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