Quantitative assessment of lncRNA H19 polymorphisms and cancer risk: a meta-analysis based on 48,166 subjects.

Recently, numerous studies have been performed to detect the association between H19 polymorphisms and cancer susceptibility. However, their results were inconsistent and controversial. So, we carried out a meta-analysis aiming to define the association exactly. Eligible studies were collected using PubMed and Embase databases up to March 31, 2019. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to assess the strength of association. Sensitivity analysis and publication bias were established to evaluate the robustness of our results. Totally, 60 studies involving 20763 cases and 27403 patients were analysed in our meta-analysis. Our results indicated that H19 rs217727 C > T polymorphism was significantly associated with increased cancer risk. In subgroup analysis, similarly increased risk could be found in gastrointestinal group for rs2839698 and protective effect was observed in rs2107425 polymorphism for cancer development in Caucasian population. Trial sequential analysis strengthened findings of our meta-analysis that cumulative evidence was adequate. In summary, our meta-analysis supported that H19 polymorphisms may be associated with cancer susceptibility.

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