Methylenetetrahydrofolate reductase polymorphisms and susceptibility to gastric cancer in Chinese populations: a meta-analysis

European Journal of Cancer Prevention : the Official Journal of the European Cancer Prevention Organisation (ECP)
Liang SunChen Yu

Abstract

Genetic polymorphisms of methylenetetrahydrofolate reductase (MTHFR) gene are thought to have significant effects on folate metabolism and, thus, on cancer risk, but the reported results are not always consistent. In this meta-analysis including 2165 patients and 3279 controls, we assessed reported studies of associations between polymorphisms of MTHFR and susceptibility to gastric cancer in Chinese populations. An increased risk was found for MTHFR C677T in the meta-analysis [odds ratio (OR): 1.42; 95% confidence interval (CI): 1.24-1.62]. No association resulted for MTHFR A1298C (OR: 0.95; 95% CI: 0.78-1.17). Results from the subgroup analyses showed an increased risk for individuals with low (OR: 1.50; 95% CI: 1.18-1.91) versus high (OR: 1.21; 95% CI: 0.98-1.51) folate levels. The sensitivity analysis and publication bias diagnostics confirmed the reliability and stability of this meta-analysis. Overall, these findings support the hypothesis that folate plays a role in gastric carcinogenesis. Regarding cardia or noncardia gastric cancer, more studies are required for definite conclusions, as the number of studies is relatively small.

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Jun 19, 2009·European Journal of Human Genetics : EJHG·Lei GaoHermann Brenner
Jun 6, 2009·Journal of Toxicology and Environmental Health. Part a·Xiaobing ShenYuepu Pu
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Oct 25, 2016·International Journal of Molecular Sciences·Henrieta ŠkovierováJán Lehotský

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