title: No association of the 5' promoter region polymorphism of CYP17 gene with prostate cancer risk.
abstract: CYP17 gene encodes the enzyme cytochrome p450c17alpha, which mediates two steps in the steroid biosynthesis pathway. Steroid hormones are believed to play a key role in the etiology of prostate cancer. A polymorphic T-->C transition in the 5(') promoter region of CYP17 creates an additional Sp1-type (CCACC box) promoter site (allele A2). We have evaluated the genotypic and allelic distribution of this polymorphism among 92 prostate cancer patients in order to assess risk by comparison with a population-based series of 200 healthy individuals from Brazil. Our results provide no evidence for an association between prostate cancer risk and CYP17 T/C polymorphism.
authors.affiliation: Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual De Campinas, Sáo Paulo, Brazil.
authors.forename: A
authors.initials: A
authors.lastname: dos Santos
authors.forename: M L
authors.initials: ML
authors.lastname: Ribeiro
authors.forename: J C
authors.initials: JC
authors.lastname: Mesquita
authors.forename: A B
authors.initials: AB
authors.lastname: Carvalho-Salles
authors.forename: C
authors.initials: C
authors.lastname: Hackel
mesh_terms: D000328:Adult; D000368:Aged; D001938:Brazil / Q000453:epidemiology; D016022:Case-Control Studies; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008297:Male; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D011401:Promoter Regions, Genetic / Q000235:genetics*; D011467:Prostate / Q000378:metabolism* / Q000473:pathology; D011471:Prostatic Neoplasms / Q000097:blood / Q000453:epidemiology / Q000235:genetics*; D012307:Risk Factors; D013254:Steroid 17-alpha-Hydroxylase / Q000097:blood / Q000235:genetics*
chemical_list: D013254:Steroid 17-alpha-Hydroxylase