• Urologic oncology · Nov 2019

    Comparative Study

    Survival after radiotherapy vs. radical prostatectomy for unfavorable intermediate-risk prostate cancer.

    • Nikhil T Sebastian, Joseph P McElroy, Douglas D Martin, Debasish Sundi, and Dayssy Alexandra Diaz.
    • Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, Columbus, OH.
    • Urol. Oncol. 2019 Nov 1; 37 (11): 813.e11-813.e19.

    BackgroundThe optimal treatment for unfavorable intermediate-risk prostate cancer is unknown. Given the lack of randomized evidence, large comparative studies may be useful in guiding clinical decision-making.MethodsWe queried the National Cancer Database for patients with unfavorable intermediate-risk prostate cancer, as defined by the National Comprehensive Cancer Network. We compared overall survival between patients treated with radical prostatectomy (RP), external beam radiation therapy (EBRT), brachytherapy, and EBRT plus brachytherapy (EBRT+BT) using Cox proportional hazards models and propensity score matching.ResultsA total of 10,439 patients were analyzed. There was no statistically significant difference in overall survival between RP and EBRT+BT (hazard ratio [HR] = 1.24; 95% confidence interval [CI] 0.58-2.65). RP was associated with higher survival when compared to EBRT (HR = 2.30, 95% CI 1.70-3.20) and brachytherapy (HR = 2.90, 95% CI 1.40-6.20). When accounting for androgen deprivation therapy (ADT), there was no statistically significant difference in survival between RP and brachytherapy with ADT (HR = 3.08; 95% CI 0.62-15.27) or EBRT to a dose of ≥7920 cGy with ADT (HR = 2.6, 95% CI 0.50-13.20).ConclusionWe found no statistically significant difference in survival between RP and EBRT+BT. EBRT and brachytherapy had higher mortality, respectively, compared to RP. When including only radiotherapy patients who received ADT and, in the case of EBRT, a total dose ≥ 7920 cGy, there was no statistically significant difference in survival when comparing RP to EBRT or brachytherapy. These findings should be prospectively studied.Copyright © 2019 Elsevier Inc. All rights reserved.

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