Polymorphisms in the Cytochrome P450 Genes CYP1A2, CYP1B1, CYP3A4, CYP3A5, CYP11A1, CYP17A1, CYP19A1 and Colorectal Cancer Risk

Overview

Journal BMC Cancer

Publisher Biomed Central

Specialty Oncology

Date 2007 Jul 7

PMID 17615053

Citations 31

Authors

Lara Bethke

Emily Webb

Gabrielle Sellick

Matthew Rudd

Stephen Penegar

Laura Withey

Mobshra Qureshi

Richard Houlston

Affiliations

Soon will be listed here.

Abstract

Background: Cytochrome P450 (CYP) enzymes have the potential to affect colorectal cancer (CRC) risk by determining the genotoxic impact of exogenous carcinogens and levels of sex hormones.

Methods: To investigate if common variants of CYP1A2, CYP1B1, CYP3A4, CYP3A5, CYP11A1, CYP17A1 and CYP19A1 influence CRC risk we genotyped 2,575 CRC cases and 2,707 controls for 20 single nucleotide polymorphisms (SNPs) that have not previously been shown to have functional consequence within these genes.

Results: There was a suggestion of increased risk, albeit insignificant after correction for multiple testing, of CRC for individuals homozygous for CYP1B1 rs162558 and heterozygous for CYP1A2 rs2069522 (odds ratio [OR] = 1.36, 95% confidence interval [CI]: 1.03-1.80 and OR = 1.34, 95% CI: 1.00-1.79 respectively).

Conclusion: This study provides some support for polymorphic variation in CYP1A2 and CYP1B1 playing a role in CRC susceptibility.

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