Abstract
Previous evidence has indicated that the polymorphism of tumor necrosis factor-alpha (TNF-α) is a risk factor for various cancers, however, the association between TNF-α-308G/A polymorphism and nasopharyngeal carcinoma (NPC) remains controversial and ambiguous. The aim of this study is to clarify the association between TNF-α polymorphism and NPC using meta-analysis. A meta-analysis based on five eligible case–control studies involving 499 cases and 1,470 controls was carried out to summarize the data on the association between TNF-α-308G/A polymorphism and NPC risk. Odds ratios (OR) with 95 % confidence intervals (95 % CI) were used to assess the strength of this association in the fixed-effect model. The pooled analyses showed no significant association between TNF-α-308G/A polymorphism and NPC (AA vs. GG: OR = 1.38, P = 0.193; GA vs. GG: OR = 0.92, P = 0.585; GA + AA vs. GG: OR = 1.00, P = 0.972; AA vs. GA + GG: OR = 1.44, P = 0.138). We also categorized by geographic location (non-Asian or Asian) for subgroup analysis; the results also showed no significant association between TNF-α-308G/A polymorphism and NPC risk in all of the comparisons. No publication bias was observed in this study (t = −0.11, P = 0.918, 95 % CI = −4.893–4.559). No significant association was found between TNF-α-308G/A polymorphism and the risk for NPC.
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All of the authors are grateful to Professor Zhi-ping Chen for his constructive criticism on an earlier draft of this manuscript, and for the integrity of the data and the accuracy of the data analysis.
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L. Xie and X.-N. Liang contributed equally to this work.
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Xie, L., Liang, XN., Deng, Y. et al. TNF-α-308G/A polymorphisms and nasopharyngeal cancer risk: a meta-analysis. Eur Arch Otorhinolaryngol 270, 1667–1672 (2013). https://doi.org/10.1007/s00405-012-2276-0
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DOI: https://doi.org/10.1007/s00405-012-2276-0