A meta-analysis of PTGS1 and PTGS2 polymorphisms and NSAID intake on the risk of developing cancer.

ABSTRACT: BACKGROUND: Several studies have investigated whether the polymorphisms in the prostaglandin endoperoxide synthase 1 (PTGS1) and PTGS2 genes and nonsteroidal anti-inflammatory drug (NSAID) use are associated with cancer risk; however, those studies have produced mixed results. Therefore, we performed a meta-analysis to evaluate the association between the PTGS1 and PTGS2 polymorphisms and the effect of NSAID use on the risk of developing cancer. METHODS: We conducted a comprehensive search in PubMed through March 2012. The odds ratios (ORs) with the corresponding 95% confidence intervals (CIs) were calculated using the fixed-effect model or the random-effect model. RESULTS: The database search generated 13 studies that met the inclusion criteria. For PTGS1 rs3842787, NSAID users homozygous for the major allele (CC) had a significantly decreased cancer risk compared with non-NSAID users (OR?=?0.73, 95% CI?=?0.59-0.89). For PTGS2 rs5275 and rs20417, there were no significant differences between the gene polymorphism and NSAID use on cancer risk among the 8 and 7 studies, respectively. However, in the stratified analysis by the type of cancer or ethnicity population, NSAID users homozygous for the major allele (TT) in rs5275 demonstrated significantly decreased cancer risk compared with non-NSAID users in cancer type not involving colorectal adenoma (OR?=?0.70, 95% CI?=?0.59-0.83) and among the USA population (OR?=?0.67, 95% CI?=?0.56-0.82). NSAID users homozygous for the major allele (GG) in rs20417 displayed a significantly decreased cancer risk than non-NSAID users among the US population (OR?=?0.72, 95% CI?=?0.58-0.88). For the PTGS2 rs689466 and rs2745557 SNPs, there were no significant differences. CONCLUSION: This meta-analysis suggests that the associations between PTGS polymorphisms and NSAID use on cancer risk may differ with regard to the type of cancer and nationality.

SUBMITTER: Nagao M 

PROVIDER: S-EPMC3742790 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature