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Genetic Polymorphisms in CYP1A1, CYP1B1, COMT, GSTP1 and NAT2 Genes and Association with Bladder Cancer Risk in a French Cohort

Tobacco smoking and environmental exposures are the main known risk factors for bladder cancer (BC) via exposure to chemical carcinogens. Genetic differences in the metabolism of chemicals have been suggested to be associated with individual susceptibility to BC. Polymorphisms in genes coding to met...

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Published in:Anticancer research 2009-05, Vol.29 (5), p.1631-1636
Main Authors: Fontana, Luc, Delort, Laetitia, Joumard, Laurie, Rabiau, Nadege, Bosviel, Remy, Satih, Samir, Guy, Laurent, Boiteux, Jean-Paul, Bignon, Yves-Jean, Chamoux, Alain, Bernard-Gallon, Dominique J
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container_issue 5
container_start_page 1631
container_title Anticancer research
container_volume 29
creator Fontana, Luc
Delort, Laetitia
Joumard, Laurie
Rabiau, Nadege
Bosviel, Remy
Satih, Samir
Guy, Laurent
Boiteux, Jean-Paul
Bignon, Yves-Jean
Chamoux, Alain
Bernard-Gallon, Dominique J
description Tobacco smoking and environmental exposures are the main known risk factors for bladder cancer (BC) via exposure to chemical carcinogens. Genetic differences in the metabolism of chemicals have been suggested to be associated with individual susceptibility to BC. Polymorphisms in genes coding to metabolising enzymes, resulting in variation of carcinogen detoxification efficiency, may therefore change the response of individuals to chemical carcinogens and be associated with an increased BC risk. Patients and Methods: The aim of the study was to investigate the association between functional polymorphisms in CYP1A1, CYP1B1, COMT, GSTP1 and NAT2 genes and BC risk, through a hospital-based case-control study. The genotyping of 11 Single Nucleotide Polymorphisms (SNPs) was carried out on DNA of 51 bladder cancer male patients and 45 male controls. The technique of MGB (Minor Groove Binder) probes that utilize allelic discrimination with the Taqman® method was used. Results: Individuals with NAT2 slow acetylator genotypes had a significant increase in risk of BC compared to individuals with NAT2 rapid acetylators (OR adjusted for smoking status=2.70; 95% CI, 1.10-6.61). GSTP1 Ile 105 Val variants (deletion of one - Ile/Val- and two -Val/Val-, null genotype- copies) showed a marginal increased risk of BC with OR adjusted for smoking status of 2.27 (95% CI, 0.97-5.31) compared to individuals carrying wild-type genotype (Ile/Ile). No statistically significant effects on BC risk with CYP1A1, CYP11B1 and COMT genotypes were observed. Conclusion: The results are consistent with previous literature among Caucasian populations.
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Genetic differences in the metabolism of chemicals have been suggested to be associated with individual susceptibility to BC. Polymorphisms in genes coding to metabolising enzymes, resulting in variation of carcinogen detoxification efficiency, may therefore change the response of individuals to chemical carcinogens and be associated with an increased BC risk. Patients and Methods: The aim of the study was to investigate the association between functional polymorphisms in CYP1A1, CYP1B1, COMT, GSTP1 and NAT2 genes and BC risk, through a hospital-based case-control study. The genotyping of 11 Single Nucleotide Polymorphisms (SNPs) was carried out on DNA of 51 bladder cancer male patients and 45 male controls. The technique of MGB (Minor Groove Binder) probes that utilize allelic discrimination with the Taqman® method was used. Results: Individuals with NAT2 slow acetylator genotypes had a significant increase in risk of BC compared to individuals with NAT2 rapid acetylators (OR adjusted for smoking status=2.70; 95% CI, 1.10-6.61). GSTP1 Ile 105 Val variants (deletion of one - Ile/Val- and two -Val/Val-, null genotype- copies) showed a marginal increased risk of BC with OR adjusted for smoking status of 2.27 (95% CI, 0.97-5.31) compared to individuals carrying wild-type genotype (Ile/Ile). No statistically significant effects on BC risk with CYP1A1, CYP11B1 and COMT genotypes were observed. 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Genetic differences in the metabolism of chemicals have been suggested to be associated with individual susceptibility to BC. Polymorphisms in genes coding to metabolising enzymes, resulting in variation of carcinogen detoxification efficiency, may therefore change the response of individuals to chemical carcinogens and be associated with an increased BC risk. Patients and Methods: The aim of the study was to investigate the association between functional polymorphisms in CYP1A1, CYP1B1, COMT, GSTP1 and NAT2 genes and BC risk, through a hospital-based case-control study. The genotyping of 11 Single Nucleotide Polymorphisms (SNPs) was carried out on DNA of 51 bladder cancer male patients and 45 male controls. The technique of MGB (Minor Groove Binder) probes that utilize allelic discrimination with the Taqman® method was used. Results: Individuals with NAT2 slow acetylator genotypes had a significant increase in risk of BC compared to individuals with NAT2 rapid acetylators (OR adjusted for smoking status=2.70; 95% CI, 1.10-6.61). GSTP1 Ile 105 Val variants (deletion of one - Ile/Val- and two -Val/Val-, null genotype- copies) showed a marginal increased risk of BC with OR adjusted for smoking status of 2.27 (95% CI, 0.97-5.31) compared to individuals carrying wild-type genotype (Ile/Ile). No statistically significant effects on BC risk with CYP1A1, CYP11B1 and COMT genotypes were observed. Conclusion: The results are consistent with previous literature among Caucasian populations.</abstract><cop>Greece</cop><pub>International Institute of Anticancer Research</pub><pmid>19443378</pmid><tpages>6</tpages></addata></record>
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subjects Aryl Hydrocarbon Hydroxylases - genetics
Arylamine N-Acetyltransferase - genetics
Base Sequence
Case-Control Studies
Catechol O-Methyltransferase - genetics
Cohort Studies
Cytochrome P-450 CYP1A1 - genetics
Cytochrome P-450 CYP1B1
DNA Primers
Genetic Predisposition to Disease
Glutathione Transferase - genetics
Humans
Male
Polymorphism, Single Nucleotide
Urinary Bladder Neoplasms - genetics
title Genetic Polymorphisms in CYP1A1, CYP1B1, COMT, GSTP1 and NAT2 Genes and Association with Bladder Cancer Risk in a French Cohort
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