Tumor Biology

, Volume 34, Issue 2, pp 1045–1052 | Cite as

Association between microsomal epoxide hydrolase 1 T113C polymorphism and susceptibility to lung cancer

  • Siwen Wang
  • Jie Zhu
  • Ruxin Zhang
  • Siyang Wang
  • Zongheng Gu
Research Article


Previous case–control studies assessing the association between microsomal epoxide hydrolase 1 (EPHX1) T113C and susceptibility to lung cancer reported conflicting results. Thus, a systemic review and meta-analysis of published studies were performed to assess the possible association. PubMed and Embase databases were searched for all eligible studies. The strength of the association between EPHX1 T113C polymorphism and lung cancer risk was estimated by the pooled odds ratios (ORs) with its 95 % confidence interval. Twenty-four individual case–control studies involving a total of 4,970 lung cancer cases and 8,917 controls were finally included into the meta-analysis. When all 24 studies were included into the meta-analysis, the pooled results suggested that there was no association between EPHX1 T113C polymorphism and lung cancer risk under all four comparison models, and all P values for the pooled ORs were more than 0.05. In the subgroup analysis of Caucasians, the pooled results suggested that EPHX1 T113C polymorphism was associated with decreased risk of lung cancer under all four comparison models, and all P values for the pooled ORs were less than 0.05. However, in the subgroup analysis of Asians, the pooled results suggested that EPHX1 T113C polymorphism was associated with increased risk of lung cancer under three comparison models, and all P values for the pooled ORs were less than 0.05. There was no risk of publication bias. This current meta-analysis suggests that EPHX1 T113C polymorphism is associated with lung cancer risk, and there is an obvious race-specific effect in the association.


Lung cancer EPHX1 T113C Meta-analysis Polymorphism 


Conflicts of interest

The authors declared that they have no competing interests.


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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2013

Authors and Affiliations

  • Siwen Wang
    • 1
  • Jie Zhu
    • 1
  • Ruxin Zhang
    • 1
  • Siyang Wang
    • 2
  • Zongheng Gu
    • 1
  1. 1.Department of Emergencythe Fourth Affiliated Hospital of China Medical UniversityShenyang CityPeople’s Republic of China
  2. 2.Department of Infectious Diseasesthe First Affiliated Hospital, China Medical UniversityShenyangChina

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