Association between CHFR gene hypermethylation and gastric cancer risk: a meta-analysis
Authors Shi H, Wang X, Wang J, Pan J, Liu J, Ye B
Received 25 July 2016
Accepted for publication 2 November 2016
Published 8 December 2016 Volume 2016:9 Pages 7409—7414
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 5
Editor who approved publication: Dr Cho
Hua Shi, Xiaojing Wang, Jianbo Wang, Jundi Pan, Junwei Liu, Bin Ye
Department of Gastroenterology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, People’s Republic of China
Background: The association between the hypermethylation of CHFR gene and gastric cancer risk has been investigated by a number of studies. However, the sample size of the majority of these studies was very small. To get a more a convincing conclusion, here we performed a meta-analysis of the previously published studies to assess the association between CHFR methylation and the risk of gastric cancer.
Methods: Eligible studies were identified by searching the MEDLINE/PubMed, Embase, and Web of Science databases before May 2016 without any language restriction. The strength of the association was estimated by odds ratio with its 95% confidence interval (CI).
Results: Totally 1,399 samples, including 758 gastric cancer cases and 641 controls, from 13 studies were included in the present meta-analysis. Compared with non-cancer controls, the pooled OR of CHFR methylation in gastric cancer patients was 9.08 (95% CI: 6.40–12.88, P<0.001), suggesting that the methylation of CHFR was significantly associated with increased risk of gastric cancer. Similar results were observed when subgroup analyses were performed stratified by country, ethnicity, and methylation testing methods.
Conclusion: Our meta-analysis showed a strong positive correlation between CHFR methylation and risk of gastric cancer, suggesting that CHFR methylation might be a promising biomarker for the diagnosis of gastric cancer.
Keywords: CHFR, methylation, tumor suppressor gene, gastric cancer, risk
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