Abstract

Glutathione-S-Transferase T1 (GSTT1) gene has been shown to be involved in the development of esophageal cancer. However, the results have been inconsistent. In this study, the authors performed a meta- analysis to clarify the association between GSTT1 polymorphism and esophageal cancer risk among Chinese Han population. Published literature from PubMed, the China National Knowledge Infrastructure and Wanfang Data were searched. Pooled odds ratio (OR) and 95% confidence interval (95%CI) was calculated using a fixed- or random-effects model. Eleven studies with a total of 2779 individuals were included in the meta-analysis. The results showed that GSTT1 null genotype was significantly associated with esophageal cancer risk in Chinese (OR = 1.31, 95%CI 1.12 to 1.53, p = 0.001). Further sensitivity analyses confirmed the significant association. The cumulative meta-analysis showed a trend of an obvious association between GSTT1 null genotype and esophageal cancer risk as information accumulated by year. This meta-analysis suggests a significant association of GSTT1 null genotype with esophageal cancer risk in the Chinese Han population.

Highlights

  • Esophageal cancer is one of the widespread and lethal cancers, ranked as sixth leading-cause of cancer related mortality in the world (Jemal et al, 2011; Thallinger et al, 2011)

  • The results showed that Glutathione-S-Transferase T1 (GSTT1) null genotype was significantly associated with esophageal cancer risk in Chinese (OR = 1.31, 95% confidence interval (95%CI) 1.12 to 1.53, p = 0.001)

  • The cumulative meta-analysis showed a trend of an obvious association between GSTT1 null genotype and esophageal cancer risk as information accumulated by year

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Summary

Introduction

Esophageal cancer is one of the widespread and lethal cancers, ranked as sixth leading-cause of cancer related mortality in the world (Jemal et al, 2011; Thallinger et al, 2011). The authors performed a metaanalysis to clarify the association between GSTT1 polymorphism and esophageal cancer risk among Chinese Han population. The results showed that GSTT1 null genotype was significantly associated with esophageal cancer risk in Chinese (OR = 1.31, 95%CI 1.12 to 1.53, p = 0.001).

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