14 November 2015 : Meta-Analysis
Cyclooxygenase-2–1195G>A Polymorphism and Head and Neck Squamous Cell Carcinoma Susceptibility: A Meta-Analysis of 1564 Cases and 2346 ControlsDong-Lai DengABE, Ling-Yun XiaBCG, Bing-Yang HeBC, Jing-Mei GuoCF, Cui HuangDG, Xian-Tao ZengAEG
Med Sci Monit 2015; 21:3514-3520
BACKGROUND: The aim of this study was to investigate the association between cyclooxygenase-2 (COX-2) rs689466 (–1195 G>A) polymorphism and susceptibility to head and neck squamous cell carcinoma (HNSCC) by performing a meta-analysis.
MATERIAL AND METHODS: PubMed and Embase were searched for relevant cohort and case-control studies up to 13 March 2015. After data extraction and methodological quality assessment for eligible studies, the overall, subgroup, sensitivity, and cumulative meta-analyses were conducted using the Comprehensive Meta-Analysis software (version 2.2).
RESULTS: Finally, 5 case-control studies involving 1564 HNSCC patients and 2346 healthy controls were included. For overall population, the results of 3 genetic models showed significant association, while the other 2 presented negative association [A vs. G: OR=0.97–1.09, 95%CI=0.97–1.09; AA vs. GG: OR=1.26, 95%CI=1.01–1.57; AA vs. GA: OR=1.21, 95%CI=1.01–1.45); AA vs. (GG+GA): OR=1.20, 95%CI=1.01–1.43; (AA+GA) vs. GG: OR=0.98, 95%CI=0.84–1.15]. Publication bias was not assessed due to the limited number of included studies.
CONCLUSIONS: This meta-analysis indicated that COX-2 rs689466 polymorphism might be associated with increased susceptibility to HNSCC. We also suggest performing more relevant studies in order to enlarge the sample size and obtain more precise results.
Keywords: Case-Control Studies, Carcinoma, Squamous Cell - genetics, Cohort Studies, Cyclooxygenase 2 - genetics, Genetic Association Studies, Genetic Predisposition to Disease, Head and Neck Neoplasms - genetics, Polymorphism, Single Nucleotide, Risk Factors
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