TP53 GENE MUTATIONS IN PROSTATE CANCER PROGRESSION

Background: We assessed the predictive value of TP53 mutations and prostate-specific antigen (PSA) for tumor progression in prostate cancer (PCa) patients. Materials and Methods: Ninety tumor tissue samples of patients with PCa from radical prostatectomy were used. Tumor progression was estimated biochemically by the PSA level (> 0.2 mu g/l) or by detection of metastases. Screening for TP53 mutations was performed by temperature gradient gel electrophoresis (TGGE) in exon-specific manner. Follow-up data were collected from medical protocols. Statistical analysis was performed by uni- and multivariate techniques. Results: In 32 out of 90 patients (35.6%), TP53 mutations were detected. Thirteen out of 32 patients (40.6%) with TP53 mutations and nine out of 58 Patients (15.5%) with TP53 wild-type showed tumor progression after 25 and 45 months, respectively. Conclusion: TP53 mutations in exon 7 and exon 8 are factors of tumor progression in PCa. Their contribution to tumor recurrence is more significant than tumor stage and pretherapeutic PSA level.