Deborah W Bruner1, Daniel Hunt2, Jeff M Michalski3, Walter R Bosch4, James M Galvin5, Mahul Amin6, Canhua Xiao1, Jean-Paul Bahary7, Malti Patel8, Susan Chafe9, George Rodrigues10, Harold Lau11, Marie Duclos12, Madhava Baikadi5, Snehal Deshmukh2, Howard M Sandler6. 1. Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia. 2. Radiation Therapy Oncology Group-Statistical Center, Philadelphia, Pennsylvania. 3. Department or Radiation Oncology, Washington University, St. Louis, Missouri. 4. Image-Guided Therapy Quality Assurance Center, Washington University, St. Louis, Missouri. 5. Department of Radiation Oncology, Thomas Jefferson University Hospital. 6. Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, California. 7. Department of Radiation Oncology, University of Montreal Hospital Center-Notre Dame, Montreal, Quebec, Canada. 8. Department of Radiation Oncology, Juravinski Cancer Center, Hamilton, Ontario, Canada. 9. Department of Radiation Oncology, Cross Cancer Institute, Edmonton, Alberta, Canada. 10. London Health Sciences Center, University of Western Ontario, London, Ontario, Canada. 11. Department of Oncology, Tom Baker Cancer Center, Calgary, Alberta, Canada. 12. Department of Oncology, McGill University, Montreal, Quebec, Canada.
Abstract
BACKGROUND: The authors analyzed a preliminary report of patient-reported outcomes (PROs) among men who received high-dose radiation therapy (RT) on Radiation Therapy Oncology Group study 0126 (a phase 3 dose-escalation trial) with either 3-dimensional conformal RT (3D-CRT) or intensity-modulated RT (IMRT). METHODS: Patients in the 3D-CRT group received 55.8 gray (Gy) to the prostate and proximal seminal vesicles and were allowed an optional field reduction; then, they received 23.4 Gy to the prostate only. Patients in the IMRT group received 79.2 Gy to the prostate and proximal seminal vesicles. PROs were assessed at 0 months (baseline), 3 months, 6 months, 12 months, and 24 months and included bladder and bowel function assessed with the Functional Alterations due to Changes in Elimination (FACE) instrument and erectile function assessed with the International Index of Erectile Function (IIEF). Analyses included the patients who completed all data at baseline and for at least 1 follow-up assessment, and the results were compared with an imputed data set. RESULTS: Of 763 patients who were randomized to the 79.2-Gy arm, 551 patients and 595 patients who responded to the FACE instrument and 505 patients and 577 patients who responded to the IIEF were included in the completed and imputed analyses, respectively. There were no significant differences between modalities for any of the FACE or IIEF subscale scores or total scores at any time point for either the completed data set or the imputed data set. CONCLUSIONS: Despite significant reductions in dose and volume to normal structures using IMRT, this robust analysis of 3D-CRT and IMRT demonstrated no difference in patient-reported bowel, bladder, or sexual functions for similar doses delivered to the prostate and proximal seminal vesicles with IMRT compared with 3D-CRT delivered either to the prostate and proximal seminal vesicles or to the prostate alone.
RCT Entities:
BACKGROUND: The authors analyzed a preliminary report of patient-reported outcomes (PROs) among men who received high-dose radiation therapy (RT) on Radiation Therapy Oncology Group study 0126 (a phase 3 dose-escalation trial) with either 3-dimensional conformal RT (3D-CRT) or intensity-modulated RT (IMRT). METHODS:Patients in the 3D-CRT group received 55.8 gray (Gy) to the prostate and proximal seminal vesicles and were allowed an optional field reduction; then, they received 23.4 Gy to the prostate only. Patients in the IMRT group received 79.2 Gy to the prostate and proximal seminal vesicles. PROs were assessed at 0 months (baseline), 3 months, 6 months, 12 months, and 24 months and included bladder and bowel function assessed with the Functional Alterations due to Changes in Elimination (FACE) instrument and erectile function assessed with the International Index of Erectile Function (IIEF). Analyses included the patients who completed all data at baseline and for at least 1 follow-up assessment, and the results were compared with an imputed data set. RESULTS: Of 763 patients who were randomized to the 79.2-Gy arm, 551 patients and 595 patients who responded to the FACE instrument and 505 patients and 577 patients who responded to the IIEF were included in the completed and imputed analyses, respectively. There were no significant differences between modalities for any of the FACE or IIEF subscale scores or total scores at any time point for either the completed data set or the imputed data set. CONCLUSIONS: Despite significant reductions in dose and volume to normal structures using IMRT, this robust analysis of 3D-CRT and IMRT demonstrated no difference in patient-reported bowel, bladder, or sexual functions for similar doses delivered to the prostate and proximal seminal vesicles with IMRT compared with 3D-CRT delivered either to the prostate and proximal seminal vesicles or to the prostate alone.
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