Abstract
BACKGROUNDThis study sought to evaluate patient-reported health-related quality of life following proton therapy for prostate cancer in men ≤60 years old.METHODSBetween August 2006 and January 2010, 262 hormone-naive men ≤60 years old were treated with definitive proton therapy for prostate cancer. Before treatment and every 6 months after treatment, patients filled out the Expanded Prostate Index Composite (EPIC) and the International Index of Erectile Function (IIEF) questionnaires. Potency was defined as successful sexual intercourse in the prior month or an EPIC sexual summary (SS) score ≥60.RESULTSMedian follow-up was 24 months; 90% of men completed follow-up EPIC forms within the last year. For EPIC urinary, bowel, and hormone subscales, the average decline from baseline to 2 years was ≤5 points, except for bowel function (5.2 points). SS scores declined 12.6 points after 2 years. Potency rates declined by 11% from baseline at 2 years, but 94% of men were potent with a baseline IIEF > 21, body mass index < 30, and no history of diabetes. At 2 years after treatment, only 1.8% of men required a pad for urge incontinence. On multivariate analysis, factors associated with a significant decline in SS score were mean penile bulb dose ≥40 cobalt Gy equivalents (P = .012) and radiation dose ≥80 cobalt Gy equivalents (P = .017); only diabetes was significantly associated with impotence (P = .015).CONCLUSIONSYoung men undergoing proton therapy for treatment of prostate cancer have excellent outcomes with respect to erectile dysfunction, urinary incontinence, and other health-related quality of life parameters during the first 2 years after treatment. Longer follow-up is needed to confirm these findings. Cancer 2012. © 2012 American Cancer Society.
Highlights
This study sought to evaluate patient-reported health-related quality of life following proton therapy for prostate cancer in men 60 years old
This study investigates patient-reported HRQoL outcomes through use of the Expanded Prostate Index Composite (EPIC) questionnaire in a young cohort of patients (60 years old) who received definitive treatment with Proton therapy (PT) alone
This study was approved by the University of Florida Institutional Review Board (IRB) and included men aged 60 years or less who were treated with definitive PT alone for prostate cancer
Summary
This study sought to evaluate patient-reported health-related quality of life following proton therapy for prostate cancer in men 60 years old. METHODS: Between August 2006 and January 2010, 262 hormone-naive men 60 years old were treated with definitive proton therapy for prostate cancer. Before treatment and every 6 months after treatment, patients filled out the Expanded Prostate Index Composite (EPIC) and the International Index of Erectile Function (IIEF) questionnaires. For EPIC urinary, bowel, and hormone subscales, the average decline from baseline to 2 years was 5 points, except for bowel function (5.2 points). CONCLUSIONS: Young men undergoing proton therapy for treatment of prostate cancer have excellent outcomes with respect to erectile dysfunction, urinary incontinence, and other health-related quality of life parameters during the first 2 years after treatment.
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