BACKGROUND: The p53 gene is frequently mutated in various human tumours. In addition, single nucleotide polymorphisms are often observed in exons and introns of the p53 gene in normal tissues and tumours. MATERIALS AND METHODS: The prevalence of a polymorphism involving codon 72 of exon 4 in the p53 gene was studied in peripheral white blood cells and tumour tissues from Danish ovarian tumour patients and in peripheral white blood cells from controls. The analyses were performed by Polymerase Chain Reaction (PCR), Restriction Fragment Length Polymorphism (RFLP) and DNA sequencing. The amino acid residue at this position is either arginine (p53-Arg) or proline (p53-Pro). RESULTS: There was no correlation between the frequency of the three genotypes (Pro/Pro, Arg/Arg and Arg/Pro) and age, stage or histological type of the tumour. A significant difference in survival was observed between ovarian cancer stage III patients with a shift from one genotype in the blood to another genotype in the tissue and patients with no shift (p=0.0216). CONCLUSION: Kaplan-Meier survival analyses and multivariate Cox regression analysis stratified to stage III ovarian cancer patients showed that a shift from one genotype in the blood to another genotype in the tissue is a prognostic factor in Danish ovarian cancer patients.
BACKGROUND: The p53 gene is frequently mutated in various humantumours. In addition, single nucleotide polymorphisms are often observed in exons and introns of the p53 gene in normal tissues and tumours. MATERIALS AND METHODS: The prevalence of a polymorphism involving codon 72 of exon 4 in the p53 gene was studied in peripheral white blood cells and tumour tissues from Danish ovarian tumourpatients and in peripheral white blood cells from controls. The analyses were performed by Polymerase Chain Reaction (PCR), Restriction Fragment Length Polymorphism (RFLP) and DNA sequencing. The amino acid residue at this position is either arginine (p53-Arg) or proline (p53-Pro). RESULTS: There was no correlation between the frequency of the three genotypes (Pro/Pro, Arg/Arg and Arg/Pro) and age, stage or histological type of the tumour. A significant difference in survival was observed between ovarian cancer stage III patients with a shift from one genotype in the blood to another genotype in the tissue and patients with no shift (p=0.0216). CONCLUSION: Kaplan-Meier survival analyses and multivariate Cox regression analysis stratified to stage III ovarian cancerpatients showed that a shift from one genotype in the blood to another genotype in the tissue is a prognostic factor in Danish ovarian cancerpatients.
Authors: Joellen M Schildkraut; Ellen L Goode; Merlise A Clyde; Edwin S Iversen; Patricia G Moorman; Andrew Berchuck; Jeffrey R Marks; Jolanta Lissowska; Louise Brinton; Beata Peplonska; Julie M Cunningham; Robert A Vierkant; David N Rider; Georgia Chenevix-Trench; Penelope M Webb; Jonathan Beesley; Xiaoqing Chen; Catherine Phelan; Rebecca Sutphen; Thomas A Sellers; Leigh Pearce; Anna H Wu; David Van Den Berg; David Conti; Christopher K Elund; Rebecca Anderson; Marc T Goodman; Galina Lurie; Michael E Carney; Pamela J Thompson; Simon A Gayther; Susan J Ramus; Ian Jacobs; Susanne Krüger Kjaer; Estrid Hogdall; Jan Blaakaer; Claus Hogdall; Douglas F Easton; Honglin Song; Paul D P Pharoah; Alice S Whittemore; Valerie McGuire; Lydia Quaye; Hoda Anton-Culver; Argyrios Ziogas; Kathryn L Terry; Daniel W Cramer; Susan E Hankinson; Shelley S Tworoger; Brian Calingaert; Stephen Chanock; Mark Sherman; Montserrat Garcia-Closas Journal: Cancer Res Date: 2009-03-10 Impact factor: 12.701
Authors: Elaine Cristina Morari; Andre Bacellar Costa Lima; Natassia Elena Bufalo; Janaina Luisa Leite; Fabiana Granja; Laura Sterian Ward Journal: J Cancer Res Clin Oncol Date: 2006-05-19 Impact factor: 4.553