Genetic variants of glutathione S-transferase as possible risk factors for hepatocellular carcinoma: A HuGE systematic review and meta-analysis

Donna L. White, Donghui Li, Zhannat Nurgalieva, Hashem B. El-Serag

Research output: Contribution to journalReview articlepeer-review

114 Scopus citations

Abstract

The authors performed a systematic review and meta-analysis to determine the effect of polymorphisms in genes encoding glutathione S-transferases (GSTs), phase II isoenzymes involved in cellular detoxification, on risk of hepatocellular carcinoma (HCC). Fifteen eligible studies were identified: 14 evaluated GSTM1; 13, GSTT1; three, GSTP1; and one each evaluated GSTM2, GSTM3, GSTA1, GSTA4, GSTO1, and GSTO2, respectively. All were case-control studies performed in populations with high (Asian, African) and medium (European) HCC incidence rates. Random-effects meta-analyses suggested a small excess risk of HCC with GSTT1 null (odds ratio (OR) = 1.19, 95% confidence interval (CI): 0.99, 1.44) and possibly GSTM1 null (OR = 1.16, 95% CI: 0.89, 1.53) genotypes. Cumulative meta-analyses demonstrated that both pooled estimators generally trended toward a small excess risk with publication of more recent studies. Results for GSTP1 A313G suggested no excess risk (OR = 0.75, 95% CI: 0.50, 1.15). A number of potentially interesting gene-gene and gene-environment interactions were reported, but these were too few and inconsistent to allow meta-analysis. The overall results suggest that there may be a small excess risk of HCC in individuals with GSTT1 null and possibly also with GSTM1 null genotypes. However, given the relatively limited total number of subjects examined and observed between-study heterogeneity, chance could not be excluded.

Original languageEnglish (US)
Pages (from-to)377-389
Number of pages13
JournalAmerican journal of epidemiology
Volume167
Issue number4
DOIs
StatePublished - Feb 2008

Keywords

  • Carcinoma, hepatocellular
  • Epidemiology
  • Genetics
  • Glutathione S-transferase pi
  • Glutathione transferase
  • Humans
  • Liver neoplasms
  • Meta-analysis

ASJC Scopus subject areas

  • Epidemiology

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