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A genetic variant in microRNA-196a2 is associated with increased cancer risk: a meta-analysis

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Abstract

MicroRNAs (miRNAs) are small non-coding RNA molecules that function as negative regulators of gene expression. Common genetic variants (single nucleotide polymorphisms, SNPs) in miRNA genes may alter their expression or maturation resulting in varied functional consequences. Until now, several studies had evaluated the association between the polymorphisms in the hsa-miR-196a2 rs11614913 and cancer risk in diverse populations and in multiple types of cancer, with contradictory outcomes. Therefore, here we performed a meta-analysis to address the association between this polymorphism and cancer risk. A total of nine studies involving 6,540 cases and 7,562 controls were retrieved based on PubMed. Our analysis demonstrated that hsa-miR-196a2 rs11614913 CC genotype significantly increased the cancer risk in homozygote comparison model compared to TT genotype (OR = 1.18; 95% CI, 1.01–1.68). Moreover, significant association of this polymorphism with breast cancer was found based on homozygote comparison model (OR = 1.30; 95% CI, 1.01–1.26) and dominant model (OR = 1.11; 95% CI, 1.01–1.23). In addition, hsa-miR-196a2 rs11614913 CC genotype was significantly associated with cancer risk in Chinese and Indian (OR = 1.21; 95% CI, 1.05–1.40), but not in Caucasians (OR = 1.03; 95% CI, 0.89–1.19). Taken together, our results indicate that the polymorphism of hsa-miR-196a2 rs11614913 is associated with cancer susceptibility, especially with breast cancer and in Chinese and Indian populations.

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Acknowledgments

This work was supported by grants from the Shanghai Science and Technology Development Fund (No. 05DJ14010), the Major Basic Research Program of Shanghai (No. 07DZ19505), and the National 973 Basic Research Program of China (No. 2008CB517403).

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None of the authors has any potential conflict of interest related to this manuscript.

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Authors and Affiliations

  1. Department of Surgery, The Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University, 600 Yishan Road, Shanghai, 200233, People’s Republic of China

    Feng Wang, Yan-Lei Ma, Peng Zhang, Jian-Jun Yang, Hong-Qi Chen, Zhi-Hua Liu, Jia-Yuan Peng, Yu-Kun Zhou & Huan-Long Qin

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  1. Feng Wang
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  2. Yan-Lei Ma
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  3. Peng Zhang
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  7. Jia-Yuan Peng
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Correspondence to Huan-Long Qin.

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Wang, F., Ma, YL., Zhang, P. et al. A genetic variant in microRNA-196a2 is associated with increased cancer risk: a meta-analysis. Mol Biol Rep 39, 269–275 (2012). https://doi.org/10.1007/s11033-011-0735-0

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  • DOI: https://doi.org/10.1007/s11033-011-0735-0

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