Polymorphisms in the CYP1B1 gene are associated with increased risk of prostate cancer

• Published in: British journal of cancer Vol. 89; no. 8; pp. 1524 - 1529
• Main Authors: Chang, B L, Zheng, S L, Isaacs, S D, Turner, A, Hawkins, G A, Wiley, K E, Bleecker, E R, Walsh, P C, Meyers, D A, Isaacs, W B, Xu, J
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 20.10.2003; Nature Publishing Group
• Subjects: Aryl Hydrocarbon Hydroxylases - genetics; Aryl Hydrocarbon Hydroxylases - pharmacology; Biomedical and Life Sciences; Biomedicine; Cancer Research; Cytochrome P-450 CYP1B1; Drug Resistance; Epidemiology; Genetic Predisposition to Disease; Genetics and Genomics; Genotype; Haplotypes; Humans; Hydrocarbons; Male; Medical research; Metabolism; Middle Aged; Molecular Medicine; Oncology; Polymorphism, Genetic; Prostate cancer; Prostatic Neoplasms - genetics; Prostatic Neoplasms - pathology; Risk Factors; association; prostate cancer; hereditary; haplotype
• ISSN: 0007-0920; 1532-1827; 1532-1827
• DOI: 10.1038/sj.bjc.6601288

CYP1B1 has been evaluated as a candidate gene for various cancers because of its function in activating environmental procarcinogens and catalysing the conversion of oestrogens to genotoxic catechol oestrogens. To test the hypothesis that genetic polymorphisms in the CYP1B1 gene may associate with the risk for prostate cancer (CaP), we compared the allele, genotype, and haplotype frequencies of 13 single nucleotide polymorphisms (SNPs) of CYP1B1 among 159 hereditary prostate cancer (HPC) probands, 245 sporadic CaP cases, and 222 unaffected men. When each of the SNPs was analysed separately, marginally significant differences were observed for allele frequencies between sporadic cases and controls for three consecutive SNPs (−1001C/T, −263G/A, and −13C/T, P =0.04–0.07). Similarly, marginally significant differences between sporadic cases and controls in the frequency of variant allele carriers were observed for five consecutive SNPs (−1001C/T, −263G/A, −13C/T, +142C/G, and +355G/T, P =0.02–0.08). Interestingly, when the combination of these five SNPs was analysed using a haplotype approach, a larger difference was found ( P =0.009). One frequent haplotype (C-G-C-C-G of −1001C/T, −263G/A, −13C/T, +142C/G, and +355G/T) was associated with an increased risk for CaP, while the other frequent haplotype (T-A-T-G-T) was associated with a decreased risk for CaP. These findings suggest that genetic polymorphisms in CYP1B1 may modify the risk for CaP.