| Titre : | Glutathione S-transferase M1 genotypes and the risk of vulvar cancer : A population-based case-control study. (1999) |
| Auteurs : | CHU CHEN . (.) ; J.R. DALING ; M.M. MADELEINE ; N.S. Weiss ; Department of Epidemiology. University of Washington. Seattle. WA. USA ; Program in Epidemiology. Division of Public Health Sciences. Fred Hutchinson Cancer Research Center. Seattle. WA. USA |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 150, n° 5, 1999) |
| Pagination : | 437-442 |
| Langues: | Anglais |
| Mots-clés : | Cancer ; Enzyme ; Epidémiologie ; Facteur risque ; Homme ; Femme ; Etats Unis ; Amérique ; Amérique du Nord |
| Résumé : | [BDSP. Notice produite par INIST teWIR0xI. Diffusion soumise à autorisation]. Glutathione S-transferases (GSTs) facilitate the excretion of a variety of potential carcinogens. Some 50-60% of Caucasians are homozygous for the null allele of GSTM1, a gene responsible for the presence of one of these enzymes. The authors examined whether women with the GSTM1 null genotype are at altered risk of vulvar cancer. They obtained peripheral blood specimens from 18-to 79-year-old residents of King, Pierce, and Snohomish counties of western Washington who were diagnosed with vulvar cancer between April 1991 and June 1994. Blood specimens were also obtained from controls identified via random digit telephone dialing of western Washington households. The authors determined the GSTM1 genotype of 137 cases (120 in situ and 17 invasive cases) and 248 controls. The frequency of the GSTM1 null genotype was 46.7% among cases and 57.3% among controls. The age-adjusted odds ratio associated with the GSTM1 null genotype was 0.7 (95% confidence interval : 0.4,1.0). Among current smokers of cigarettes, the age-adjusted odds ratio associated with the GSTM1 null genotype was 0.5 (95% confidence interval : 0.2,0.9), differing little between heavy and light smokers. Our data suggest that women with the GSTM1 null genotype are not at increased risk of vulvar cancer. Am J Epidemiol 1999 ; 150 : 437-42. |
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