Meta-Analysis of the Association between Mir-196a-2 Polymorphism and Cancer Susceptibility

oleh: Huan Zhang, Yu-liang Su, Herbert Yu, Bi-yun Qian

Format: Article
Diterbitkan: China Anti-Cancer Association 2012-03-01

Deskripsi

<b>Objective</b> 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.<br><b>Methods</b> A total of 27 independent case-control studies involving 10,435 cases and 12,075 controls were analyzed for the rs11614913 polymorphism.<br><b>Results</b> A significant association was found between rs11614913 polymorphism and cancer risk in four genetic models (CT <i>vs</i>. TT, OR=1.15, 95%CI=1.05-1.27; CC <i>vs</i>. 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.<br><b>Conclusions</b> 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.