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Published in: BMC Cancer 1/2010

Open Access 01-12-2010 | Research article

The PstI/RsaI and DraI polymorphisms of CYP2E1and head and neck cancer risk: a meta-analysis based on 21 case-control studies

Authors: Kefu Tang, Yang Li, Zhao Zhang, Yunmin Gu, Yuyu Xiong, Guoyin Feng, Lin He, Shengying Qin

Published in: BMC Cancer | Issue 1/2010

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Abstract

Background

CYP2E1 encodes a member of the cytochrome P450 superfamily of enzymes which play a central role in activating and detoxifying many carcinogens and endogenous compounds thought to be involved in the development of cancer. The PstI/RsaI and DraI polymorphism are two of the most commonly studied polymorphisms of the gene for their association with risk of head and neck cancer, but the results are conflicting.

Methods

We performed a meta-analysis using 21 eligible case-control studies with a total of 4,951 patients and 6,071 controls to summarize the data on the association between the CYP2E1 PstI/RsaI and DraI polymorphism and head and neck cancer risk, especially by interacting with smoking or alcohol.

Results

Compared with the wild genotype, the OR was 1.96 (95% CI: 1.33-2.90) for PstI/RsaI and 1.56 (95% CI: 1.06-2.27) for DraI polymorphism respectively. When stratified according to ethnicity, the OR increased in the Asians for both polymorphisms (OR = 2.04, 95% CI: 1.32-3.15 for PstI/RsaI; OR = 2.04, 95% CI: 1.27-3.29 for DraI), suggesting that the risk is more pronounced in Asians.

Conclusion

Our meta-analysis suggests that individuals with the homozygote genotypes of PstI/RsaI or DraI polymorphism might be associated with an increased risk of head and neck cancer, especially in Asians.
Appendix
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Metadata
Title
The PstI/RsaI and DraI polymorphisms of CYP2E1and head and neck cancer risk: a meta-analysis based on 21 case-control studies
Authors
Kefu Tang
Yang Li
Zhao Zhang
Yunmin Gu
Yuyu Xiong
Guoyin Feng
Lin He
Shengying Qin
Publication date
01-12-2010
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2010
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-10-575

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