Role of interleukin-12 gene polymorphisms in the onset risk of cancer: a meta-analysis

Yi Zheng; Meng Wang; Tian Tian; Kang Liu; Xinghan Liu; Yajing Zhai; Shuai Lin; Pengtao Yang; Shanli Li; Zhijun Dai; Jun Lu

doi:10.18632/oncotarget.16080

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Research Papers:

Role of interleukin-12 gene polymorphisms in the onset risk of cancer: a meta-analysis

Yi Zheng, Meng Wang, Tian Tian, Kang Liu, Xinghan Liu, Yajing Zhai, Shuai Lin, Pengtao Yang, Shanli Li, Zhijun Dai and Jun Lu _

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Oncotarget. 2017; 8:29795-29807. https://doi.org/10.18632/oncotarget.16080

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Abstract

Yi Zheng1,2,*, Meng Wang2,*, Tian Tian2,*, Kang Liu2, Xinghan Liu2, Yajing Zhai1, Shuai Lin2, Pengtao Yang2, Shanli Li2, Zhijun Dai2, Jun Lu1

1Clinical Research Center, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, China

2Department of Oncology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, 710004, China

*These authors contributed equally to this work

Correspondence to:

Jun Lu, email: [email protected]

Zhijun Dai, email: [email protected]

Keywords: interluekin-12, cancer risk, polymorphism, meta-analysis

Received: December 31, 2016 Accepted: February 27, 2017 Published: March 10, 2017

ABSTRACT

Many molecular epidemiologic studies have explored the possible links between interleukin-12 (IL-12) polymorphisms and various cancers. However, results from these studies remain inconsistent. This meta-analysis is aimed to shed light on the associations between three common loci (rs568408, rs2243115, rs3212227) of IL-12 gene and overall cancer risk. Our meta-analysis finally included 33 studies comprising 10,587 cancer cases and 12,040 cancer-free controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the cancer risk. We observed a significant association between IL-12B rs3212227 and overall cancer risk, especially in hepatocellular carcinoma, nasopharyngeal cancer, and among Asians. IL-12A polymorphisms (rs2243115 and rs568408) were found no influence on overall cancer risk. Nevertheless, stratification analyses demonstrated that rs568408 polymorphism contributed to increasing cancer risk of Caucasians and cervical cancer. And, rs2243115 may enhance the risk of brain tumor. These findings provided evidence that IL-12 polymorphisms may play a potential role in cancer risk.

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Research Papers:

Role of interleukin-12 gene polymorphisms in the onset risk of cancer: a meta-analysis

Abstract