HFE gene C282Y variant is associated with colorectal cancer in Caucasians: a meta-analysis

Tumour Biol. 2013 Aug;34(4):2255-9. doi: 10.1007/s13277-013-0766-3. Epub 2013 Apr 4.

Abstract

The HFE gene has been suggested to play an important role in the pathogenesis of colorectal cancer. However, the results have been conflicting. In this study, we performed a meta-analysis to clarify the association of HFE gene C282Y variant with colorectal cancer. PubMed and Embase were retrieved to identify the potential literature. Pooled odds ratio (OR) with 95 % confidence interval (CI) was calculated using fixed- or random-effects model. A total of eight papers including nine studies (7,588 colorectal cancer cases and 81,571 controls) for HFE gene C282Y variant were included in the meta-analysis. The result indicated that HFE gene C282Y variant was significantly associated with colorectal cancer under recessive model (OR = 2.00, 95 % CI = 1.32-3.04), with no evidence of between-study heterogeneity (I (2) = 0.2 %, p = 0.432). Further subgroup analysis by number of cases suggested the effect was significant in studies with more than 500 cases (OR = 2.51, 95 % CI = 1.58-3.98, I (2) = 0.0 %, p = 0.921), but not in studies with less than 500 cases (OR = 0.75, 95 % CI = 0.28-1.97, I (2) = 0.0 %, p = 0.622). The current meta-analysis supported the positive association of HFE gene C282Y variant with colorectal cancer. Further large-scale studies with the consideration for gene-gene/gene-environment interactions should be conducted to investigate the association.

Publication types

  • Meta-Analysis

MeSH terms

  • Colorectal Neoplasms / genetics*
  • Gene Frequency
  • Genetic Predisposition to Disease
  • Hemochromatosis Protein
  • Histocompatibility Antigens Class I / genetics*
  • Humans
  • Membrane Proteins / genetics*
  • Odds Ratio
  • Polymorphism, Single Nucleotide
  • Risk
  • White People / genetics

Substances

  • HFE protein, human
  • Hemochromatosis Protein
  • Histocompatibility Antigens Class I
  • Membrane Proteins