Department of Medical Oncology, College of Medicine, Henan University of Science and Technology, Luoyang, China
Research Article
Association of Genetic Polymorphisms in Tumour Necrosis Factor-Alpha (TNF-α-
308G/A) and Interleukin-6 (IL-6-174G/C and IL-6-634C/G) with Lung Cancer Risk: A Meta-Analysis
Author(s): Yibo Guo, Xinshuai Wang, Xiang Yuan, Yiwen Liu, Wei Sun and Shegan Gao*
The aim of this study was to examine the association of Tumour Necrosis Factor-Alpha (TNF-α) and Interleukin-6 (IL- 6) gene polymorphisms with the risk of developing lung cancer. We searched several electronic databases, including PubMed and Excerpt Medica Database (EMBASE), for a total of 17 studies involving 4,094 cases and 4,988 controls, which were included in a meta-analysis. The effects of three polymorphisms, TNF-α-308G/A, IL-6-174G/C and IL- 6-634C/G, were evaluated. The pooled Odds Ratio (OR) with 95% Confidence Interval (95% CI) was calculated by RevMan software. Heterogeneity was also assessed. Based on our results, we found an association between the TNF-α-308G/A polymorphism and lung cancer risk under the dominant model (GG+GA vs. AA, OR=0.60, 95% CI: 0.40 to 0.89). For the IL-6-174G/C polymorphisms, the pooled ORs (95% CI) of GG/GC vs... View more»