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Published on: September 8, 2015
Meta-Analysis of the Association between Mir-196a-2 Polymorphism and Cancer Susceptibility
Huan Zhang1, Yu-Liang Su, Herbert Yu
1Department of Epidemiology and Biostatistics, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China ; Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin 300060, China.
Objective:
MicroRNA plays a vital role in gene expression, and microRNA dysregulation is involved in carcinogenesis. The miR-196a-2 polymorphism rs11614913 is reportedly associated with cancer susceptibility. This meta-analysis was performed to assess the overall association of miR-196a-2 with cancer risk.
Methods:
A total of 27 independent case-control studies involving 10,435 cases and 12,075 controls were analyzed for the rs11614913 polymorphism.
Results:
A significant association was found between rs11614913 polymorphism and cancer risk in four genetic models (CT vs. TT, OR=1.15, 95%CI=1.05-1.27; CC vs. TT, OR=1.23, 95%CI=1.08-1.39; Dominant model, OR=1.17, 95%CI=1.06-1.30; Additive model, OR=1.08, 95%CI=1.01-1.14). In the subgroup analysis of different tumor types, the C allele was associated with increased risk of lung, breast, and colorectal cancer, but not with liver, gastric, or esophageal cancer. In the subgroup analysis by ethnicity, a significantly increased risk of cancer was found among Asians in all genetic models, but no associations were found in the Caucasian subgroup.
Conclusions:
The meta-analysis demonstrated that the miR-196a-2 polymorphism is associated with cancer susceptibility, especially lung cancer, colorectal cancer, and breast cancer among Asian populations.
Insights
The miR-196a-2 gene polymorphism rs11614913 is linked to increased cancer susceptibility. This risk is particularly elevated for lung, breast, and colorectal cancers in Asian populations.
Area of Science:
- Genetics
- Oncology
- Molecular Biology
Background:
- MicroRNAs regulate gene expression and are implicated in cancer development.
- The miR-196a-2 polymorphism, specifically rs11614913, has been investigated for its role in cancer susceptibility.
Purpose of the Study:
- To conduct a meta-analysis assessing the association between the miR-196a-2 rs11614913 polymorphism and overall cancer risk.
Main Methods:
- A meta-analysis of 27 independent case-control studies.
- Involved 10,435 cancer cases and 12,075 controls.
- Analyzed the rs11614913 polymorphism in miR-196a-2.
Main Results:
- A significant association between rs11614913 and cancer risk was observed across four genetic models.
- The C allele correlated with higher risks for lung, breast, and colorectal cancers.
- Increased cancer risk was noted among Asian populations but not Caucasians.
Conclusions:
- The miR-196a-2 polymorphism rs11614913 is associated with cancer susceptibility.
- This association is particularly significant for lung, colorectal, and breast cancers in Asian individuals.
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