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ORIGINAL ARTICLE
Year : 2014  |  Volume : 10  |  Issue : 8  |  Page : 252-255

MicroRNA-146a rs2910164 G/C polymorphism and gastrointestinal cancer susceptibility: A meta-analysis based on East Asian population


1 Department of Medical Gastroenterology, Cancer Hospital of Henan Province, The Affiliated Cancer Hospital of Zhengzhou University, Henan 450008, China
2 Department of Endoscopy Center, Cancer Hospital of Henan Province, The Affiliated Cancer Hospital of Zhengzhou University, Henan 450008, China
3 Department of General Surgery, Cancer Hospital of Henan Province, The Affiliated Cancer Hospital of Zhengzhou University, Henan 450008, China

Correspondence Address:
Su-Xia Luo
Department of Medical Gastroenterology, Cancer Hospital of Henan Province, Henan 450003
China
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Source of Support: This work was supported by Henan Academy of medical science and technology projects(No.201203144), Conflict of Interest: None


DOI: 10.4103/0973-1482.151462

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Objective: The relationship between microRNA (miR-146a) rs2910164G/C polymorphism and gastrointestinal cancer susceptibility is not consistent with each other of the published articles. The aim of this meta-analysis was to acquire a more precise effect of the association between the miR-146a rs2910164 G/C polymorphism and gastrointestinal cancer. Materials and Methods: Through searching of the MedLine, Embase, China National Knowledge Infrastructure, and Wanfang databases. Case-control or cohort studies about the relationship between miR-146a rs2910164 G/C polymorphism and gastrointestinal cancer susceptibility were screened and included in this meta-analysis. Quantitative data synthesis was conducted for the associations of miR-146a rs2910164 G/C polymorphism and gastrointestinal cancer risk by statistical software STATA-11.0. Results: Ten studies including 6473 gastrointestinal cancer patients and 7923 controls were identified and included in this meta-analysis. For recessive genetic model (CC vs. CG + GG), people with CG or GG is associated with the susceptibility of gastrointestinal cancer compared with genotype of CC (R = 0.73, 5% confidence interval [CI]: 0.55-0.97, [P = 0.03]); But for dominant model (CC + CG vs. GG) and homozygous model (CC vs. GG), no association of the miR-146a rs2910164G/C polymorphism and gastrointestinal cancer susceptibility were found (dominant: Odds ratio [OR] =0.94, 95% CI: 0.82-1.03, [P = 0.37]; homozygous: OR = 0.85, 95% CI: 0.71-1.03, [P = 0.10]). Sub-group analysis, for homozygous model, people with GG genotype had increased risk of developing colorectal cancer (OR = 0.77, 95% CI: 0.64-0.93, [P = 0.008]). Conclusion: No significant association between miR-146a rs2910164G/C polymorphism and gastrointestinal cancer susceptibility was found in this meta-analysis. But for homozygous model, people with GG genotype may have increased risk of developing colorectal cancer.


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