Authors: Chunxiang Li Zheng Jiang Xinghan Liu
Publish Date: 2009/08/08
Volume: 37, Issue: 1, Pages: 301-309
Abstract
Studies on the polymorphisms of Xeroderma Pigmentosum Group D XPD have shown inconclusive trends in the risk of bladder cancer The purpose of this study is to evaluate the role of XPD single nucleotide polymorphisms in bladder cancer susceptibility We performed a metaanalysis on all available studies which included 5368 and 6683 XPD Lys751Gln cases and controls and 3220 and 4391 Asp312Asn cases and controls respectively Overall Significant risk effects of Lys751Gln genotype was found under recessive model contrast Gln/Gln vs Gln/Lys + Lys/Lys P = 004 OR = 112 95 CI 101 126 and subtle but insignificantly increased risks between Lys751Gln and bladder cancer were observed under allele contrast Gln vs Lys and homologous contrast Gln/Gln vs Lys/Lys in all subjects The 751Gln allele had no significant effect on bladder cancer in all subgroups Asian Caucasian and USA Significant risk effects of Asp312Asn polymorphism on bladder susceptibility were observed in all subjects under all genetic contrasts however stratified analyses showed that the 312Asn allele showed different risk effects in USA and Caucasian The Gln/Gln genotype acts as a risk factor in its association with bladder cancer and the effect of Lys751Gln polymorphism on bladder susceptibility should be studied with larger stratified population the 312Asn allele has an important role in the etiology of bladder cancer whereas the ethnic background should be carefully concerned in further studies
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