RESUMO
BACKGROUND: This systemic review and meta-analysis seeks to systematically analyze and summarize the association between non-coding RNA polymorphisms and ovarian cancer risk. METHODS: We searched PubMed, Web of Science and CNKI for available articles on non-coding RNA polymorphisms in patients with ovarian cancer from inception to March 1, 2023. The quality of each study included in the meta-analysis was rated according to the Newcastle-Ottawa Scale.Odds ratios (ORs) with their 95% confidence intervals (95% CI) were used to assess associations. Chi-square Q-test combined with inconsistency index (I2) was used to test for heterogeneity among studies. Lastly, trial sequential analysis (TSA) software was used to verify the reliability of meta-analysis results, and in-silico miRNA expression were also performed. The meta-analysis was registered with PROSPERO (No. CRD42023422091). RESULTS: A total of 17 case-control studies with 18 SNPs were selected, including 2 studies with H19 rs2107425 and HOTAIR rs4759314, and 5 studies with miR-146a rs2910164 and miR-196a rs11614913. Significant associations were found between H19 rs2107425, miR-146a rs2910164, and miR-196a rs11614913 and ovarian cancer risk. Three genetic models of H19 rs2107425 (CT vs TT (heterozygote model): ORâ =â 1.36, 95% CIâ =â 1.22-1.52, Pâ <â .00001; CCâ +â CT vs TT (dominant model): ORâ =â 1.12, 95% CIâ =â 1.02-1.24, Pâ =â .02; and CC vs CTâ +â TT (recessive model): ORâ =â 1.23, 95% CIâ =â 1.16-1.31, Pâ <â .00001), 2 genetic models of miR-146a rs2910164 (allele model: ORâ =â 1.75, 95% CIâ =â 1.05-2.91, Pâ =â .03; and heterozygote model: ORâ =â 0.33, 95% CIâ =â 0.11-0.98, Pâ =â .05), 3 genetic models of miR-196a rs11614913 (allele model: ORâ =â 0.70, 95% CIâ =â 0.59-0.82, Pâ <â .0001; dominant model: ORâ =â 1.62, 95% CIâ =â 1.18-2.24, Pâ =â .0001; and recessive model: ORâ =â 0.70, 95% CIâ =â 0.57-0.87, Pâ =â .03) were statistically linked to ovarian cancer risk. Subgroup analysis for miR-146a rs2910164 was performed according to ethnicity. No association was found in any genetic model. The outcomes of TSA also validated the findings of this meta-analysis. CONCLUSION: This study summarizes that H19 rs2107425, miR-146a rs2910164, and miR-196a rs11614913 polymorphisms are significantly linked with the risk of ovarian cancer, and moreover, large-scale and well-designed studies are needed to validate our result.