Digestive Diseases and Sciences

, Volume 56, Issue 8, pp 2227–2236

Polymorphisms of Tumor Necrosis Factor-Alpha and Hepatocellular Carcinoma Risk: A HuGE Systematic Review and Meta-Analysis

  • Yonggang Wei
  • Fei Liu
  • Bo Li
  • Xi Chen
  • Yu Ma
  • Lvnan Yan
  • Tianfu Wen
  • Mingqing Xu
  • Wentao Wang
  • Jiayin Yang
Original Article

DOI: 10.1007/s10620-011-1617-y

Cite this article as:
Wei, Y., Liu, F., Li, B. et al. Dig Dis Sci (2011) 56: 2227. doi:10.1007/s10620-011-1617-y

Abstract

Background

Studies investigating the associations between tumor necrosis factor-alpha (TNFA) polymorphisms and hepatocellular carcinoma (HCC) risk report conflicting results. We conducted a meta-analysis to assess the association between TNFA gene TNFA-308(G/A), TNFA-238(G/A), TNFA-863(C/A), TNFA-857(C/T), TNFA-1031 (T/C) polymorphisms and HCC susceptibility.

Methods

Two investigators independently searched the Medline, Embase, CNKI, and Chinese Biomedicine Database. Summary odds ratios (ORs) and 95% confidence intervals (95% CIs) for TNFA polymorphisms and HCC were calculated in a fixed-effects model (the Mantel–Haenszel method) and a random-effects model (the DerSimonian and Laird method) when appropriate.

Results

This meta-analysis included 17 case–control studies, which included 2,357 HCC cases and 3,161 controls. Overall, the variant genotypes AA/AG of -308G/A were associated with a significantly increased HCC risk, when compared with GG genotype (AA vs. GG, OR = 1.97, 95%CI = 1.01–3.83; AG vs. GG, OR = 1.88, 95%CI = 1.23–2.88; AA/AG vs. GG, OR = 1.80, 95%CI = 1.19–2.72). When stratifying for ethnicity, significantly elevated HCC risk was found among Asians. Moreover, similar results were observed between TNFA-238G/A, TNFA-863C/A polymorphisms and HCC risk among Asians (for -238G/A, AG vs. GG OR = 1.63, 95%CI = 1.17–2.26, AA/AG vs. GG OR = 1.61, 95%CI = 1.16–2.24; for -863 C/A, AC vs. CC OR = 1.72, 95%CI = 1.03–2.88, AA/AC vs. CC OR = 1.71, 95%CI = 1.02–2.86), while no associations were observed between TNFA-857C/T, TNFA-1031T/C polymorphisms and HCC susceptibility.

Conclusions

This meta-analysis shows that TNFA-308G/A, TNFA-238G/A and TNFA-863C/A polymorphisms may be associated with HCC among Asians. TNFA-857C/T and TNFA-1031T/C polymorphisms were not detected to be related to the risk for HCC.

Keywords

Hepatocellular carcinomaTNFAGene polymorphismMeta-analysis

Abbreviations

HCC

Hepatocellular carcinoma

HBV

Hepatitis B virus

HCV

Hepatitis C virus

OR

Odds ratio

CI

Confidence interval

TNFA

Tumor necrosis factor-alpha

SNPs

Single nucleotide polymorphisms

HWE

Hardy–Weinberg equilibrium

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Yonggang Wei
    • 1
  • Fei Liu
    • 1
  • Bo Li
    • 1
  • Xi Chen
    • 1
  • Yu Ma
    • 1
  • Lvnan Yan
    • 1
  • Tianfu Wen
    • 1
  • Mingqing Xu
    • 1
  • Wentao Wang
    • 1
  • Jiayin Yang
    • 1
  1. 1.Department of Liver and Vascular SurgeryWest China Hospital, Sichuan UniversityChengduChina