Dataset Information

Association between Glu504Lys polymorphism of ALDH2 gene and cancer risk: a meta-analysis.

ABSTRACT: The association of the aldehyde dehydrogenases-2 (ALDH2) Glu504Lys polymorphism (also named Glu487Lys, or rs671) and cancers has been investigated. This meta-analysis aims to comprehensively assess the influence of this polymorphism on the overall cancer risk.Eligible publications were retrieved according to inclusion/exclusion criteria and the data were analyzed using the Review Manager software (V5.2).A meta-analysis based on 51 case-control studies consisting of 16774 cases and 32060 controls was performed to evaluate the association between the ALDH2 Glu504Lys polymorphism and cancer risk. The comparison of genotypes Lys+ (Lys/Lys and Lys/Glu) with Glu/Glu yielded a significant 20% increased cancer risk (OR = 1.20, 95%CI: 1.03-1.39, P = 0.02, I2 = 92%). Subgroup analysis by cancer type indicated a significantly increased UADT cancer risk (OR = 1.39, 95%CI: 1.11-1.73, P = 0.004, I2 = 94%) in individuals with the Lys+ genotypes. Subgroup analysis by country indicated that individuals from Japan with the Lys+ genotypes had a significant 38% increased cancer risk (OR = 1.38, 95%CI: 1.12-1.71, P = 0.003, I2 = 93%).Our results indicated that the ALDH2 Glu504Lys polymorphism is a susceptible loci associated with overall cancers, especially esophageal cancer and among Japanese population.

SUBMITTER: Cai Q

PROVIDER: S-EPMC4334541 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Association between Glu504Lys polymorphism of ALDH2 gene and cancer risk: a meta-analysis.

Cai Qiang Q Wu Jian J Cai Qu Q Chen Er-Zhen EZ Jiang Zhao-Yan ZY

PloS one 20150213 2

<h4>Background</h4>The association of the aldehyde dehydrogenases-2 (ALDH2) Glu504Lys polymorphism (also named Glu487Lys, or rs671) and cancers has been investigated. This meta-analysis aims to comprehensively assess the influence of this polymorphism on the overall cancer risk.<h4>Methods</h4>Eligible publications were retrieved according to inclusion/exclusion criteria and the data were analyzed using the Review Manager software (V5.2).<h4>Results</h4>A meta-analysis based on 51 case-control s ...[more]

PMID: 25680115

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Project description:BackgroundPhosphatase and tensin homolog (PTEN) is a well established tumor suppressor gene. Recently, increasing studies investigated the association between PTEN IVS4 polymorphism (rs3830675) and risk of various types of cancer. However, the results from the individual studies were controversial. The aim of this meta-analysis was to elucidate whether PTEN IVS4 polymorphism was associated with cancer risk.MethodsDatabases including PubMed, Web of knowledge and Chinese National Knowledge Infrastructure (CNKI) were systematically searched to identify potentially eligible literatures. Odds ratios (OR) and their 95% confidence interval (CI) were used to assess the strength of association between PTEN IVS4 polymorphism and cancer risk.ResultsA total of seven case-control studies were finally included in this meta-analysis. The pooled analysis suggested that individuals with PTEN IVS4 (-/-) genotype were significantly associated with increased risk of cancer (OR = 1.45, 95% CI = 1.19-1.76, P<0.001) and subgroup of digestive tract cancer (OR = 1.67, 95% CI = 1.28-2.18, P<0.001) compared with (+/+) genotype. The allele analysis revealed that (-) allele was significantly associated with increased risk of cancer (OR = 1.30, 95% CI = 1.12-1.50, P = 0.001) and subgroup of digestive tract cancer (OR = 1.42, 95% CI = 1.16-1.74, P = 0.001) compared with (+) allele. No significant association was observed between PTEN IVS4 (+/-) genotype and risk of cancer.ConclusionPTEN IVS4 (-/-) genotype was significantly associated with increased risk of cancer especially for digestive tract cancer compared with (+/+) genotype. The (-) allele of PTEN IVS4 (rs3830675) polymorphism was significantly associated with increased risk of cancer especially for digestive tract cancer compared with (+) allele. The recessive effect model and dominant effect model also demonstrated significant association between PTEN IVS4 (rs3830675) polymorphism and increased cancer risk especially for digestive tract cancer. Further large-scale and well-designed studies regarding different ethnicities are still required to confirm the results of our meta-analysis.

Dataset Information

Association between Glu504Lys polymorphism of ALDH2 gene and cancer risk: a meta-analysis.

Publications

Association between Glu504Lys polymorphism of ALDH2 gene and cancer risk: a meta-analysis.

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