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RATIONALE: Radiation therapy uses high-energy x-rays to damage cancer cells. It is not yet known whether radiation therapy is more effective than observation only after sugery in treating endometrial cancer.
PURPOSE: This randomized phase III trial is studying radiation therapy to see how well it works compared to observation only in treating patients with stage I or stage II endometrial cancer who have undergone hysterectomy and oophorectomy.
- Compare the overall survival in patients with intermediate-risk endometrial cancer treated with pelvic radiotherapy vs observation after laparoscopically-assisted vaginal hysterectomy or total abdominal hysterectomy and bilateral salpingo-oophorectomy.
- Compare the time to locoregional recurrence (i.e., in the vaginal mucosa or elsewhere in the central pelvic area or lateral pelvic walls) in patients treated with these regimens.
- Compare the duration of ultimate pelvic control and event-free survival in patients treated with these regimens.
- Compare the toxic effects of these regimens in these patients.
- Compare the quality of life of patients treated with these regimens.
- Compare sexual health issues in patients treated with these regimens.
OUTLINE: This is a randomized, multicenter study. Patients are stratified by center, tumor grade (1 vs 2 vs 3), surgical staging (yes vs no), and sexual health assessment (yes vs no).
Patients undergo laparoscopic-assisted vaginal hysterectomy or total abdominal hysterectomy and bilateral salpingo-oophorectomy. After surgery, patients are randomized to 1 of 2 treatment arms.
- Arm I: Patients undergo observation alone.
- Arm II: Beginning within 12 weeks (preferably within 6-8 weeks) after surgery, patients undergo radiotherapy 5 days a week for 5 weeks in the absence of disease progression or unacceptable toxicity. Protocol-defined brachytherapy is allowed.
Quality of life is assessed at baseline; at 16-18 weeks after surgery (arm I) or 5 and 9 weeks after initiating radiotherapy (arm II); and then at 6, 12, 18, 24, 36, 48, and 60 months.
Patients are followed every 3 months for 2 years, every 4 months for 1 year, every 6 months for 2 years, and then annually thereafter.
PROJECTED ACCRUAL: A total of 400 patients will be accrued for this study.
Allocation: Randomized, Control: Active Control, Primary Purpose: Treatment
adjuvant therapy, conventional surgery, laparoscopic surgery, brachytherapy, radiation therapy
St. Mary's - Duluth Clinic Cancer Center
NCIC Clinical Trials Group
Published on BioPortfolio: 2014-08-27T03:58:59-0400
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