Genetic variants in telomere-maintenance genes and bladder cancer risk.

PloS One
Joshua ChangJian Gu

Abstract

Telomeres are critical in maintaining genomic stability. Genetic variants in telomere pathway genes may affect telomere and telomerase function, and subsequently cancer risk. We evaluated 126 SNPs from 10 genes related to telomere regulation in relation to bladder cancer risk. Five SNPs, 4 from TEP1 gene and 1 from PINX1 gene, were found to be highly significant (P<0.01). Out of these, the most significant association was found in rs2228041 of TEP1 (OR 1.66, 95% CI 1.19-2.31) while rs1469557 of PINX1 had a protective effect (OR 0.75, 95% CI 0.61-0.93). Haplotype analysis showed that a TEP1 haplotype consisting of the variant alleles of 7 SNPs exhibited a 2.28 fold increased risk (95% CI 1.13-4.60). We then performed cumulative analysis of multiple risk variants, as well as Classification and Regression Tree (CART) to look for gene-gene interactions. In cumulative effect analysis, the group with 4-5 risk variants had an OR of 2.57 (95% CI = 1.62-4.09) versus the reference group with 0 risk variants. The CART analysis categorized individuals into five subgroups with different bladder cancer risk profiles based on their distinct genotype background. To our knowledge, this is one of the largest, most comprehensive studies on bladde...Continue Reading

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Citations

Mar 14, 2013·Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine·Zhenlong WangZiming Wang
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Software Mentioned

STATA
LDSelect
BeadStudio
HelixTree Genetics Analysis
CART

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