Related Experiment Videos
Predicting prostate specific antigen outcome preoperatively in the prostate specific antigen era
A V D'Amico1, R Whittington, S B Malkowicz
1Department of Radiation Oncology, Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, Massachusetts, USA.
The Journal of Urology
|November 7, 2001
Summary
Risk groups effectively predict prostate-specific antigen (PSA) outcomes 10 years post-radical prostatectomy for localized prostate cancer. Patients in high-risk groups face significantly higher PSA failure rates compared to low-risk individuals.
Area of Science:
- Urology
- Oncology
- Medical Statistics
Background:
- Prostate-specific antigen (PSA) screening has improved early detection of prostate cancer.
- Radical prostatectomy is a primary treatment for localized prostate cancer.
- Predicting long-term outcomes after surgery is crucial for patient management.
Purpose of the Study:
- To assess the predictive accuracy of established risk groups for 10-year prostate-specific antigen (PSA) outcomes.
- To evaluate these risk groups in patients with clinically localized prostate cancer treated during the PSA era.
Main Methods:
- A cohort of 2,127 men with localized prostate cancer undergoing radical prostatectomy between 1989-2000 was analyzed.
- Cox regression and Kaplan-Meier methods were used to estimate PSA failure and survival rates.
- Patients were stratified into low, intermediate, and high-risk groups based on preoperative PSA, Gleason score, and clinical T category.
Main Results:
- High-risk patients had a significantly higher relative risk of PSA failure (3.3-9.6 times) compared to low-risk patients.
- Ten-year PSA failure-free survival rates were 83% for low-risk, 46% for intermediate-risk, and 29% for high-risk groups.
- These findings were consistent in both the study and validation cohorts.
Conclusions:
- Preoperative PSA, biopsy Gleason score, and clinical T category effectively define three risk groups.
- These risk groups accurately predict 10-year PSA outcomes after radical prostatectomy.
- The identified risk stratification aids in managing patients with localized prostate cancer.