Radiation Therapy in Treating Women Who Have Undergone Breast Conservation Surgery and Systemic Therapy for Early Breast Cancer
Randomized Trial Testing Dose Escalated Intensity Modulated Radiotherapy for Women Treated by Breast Conservation Surgery and Appropriate Systemic Therapy for Early Breast Cancer
RATIONALE: Radiation therapy uses high-energy x-rays to kill tumor cells. Specialized radiation therapy, such as intensity-modulated radiation therapy, that delivers a high dose of radiation directly to the tumor may kill more tumor cells and cause less damage to normal tissue. It is not yet known which radiation therapy schedule is more effective in treating breast cancer.
PURPOSE: This randomized phase III trial is studying three different radiation therapy schedules to compare how well they work in treating women who have undergone breast conservation surgery and systemic therapy for early breast cancer.
연구 개요
상세 설명
OBJECTIVES:
- To test dose-escalated intensity-modulated radiotherapy after breast conservation surgery in women with early breast cancer who are at higher than average risk for local recurrence.
OUTLINE: This is a multicenter study. Patients are stratified according to center. Patients are randomized to 1 of 3 treatment arms.
- Arm I (control): Patients undergo sequential boost dose intensity-modulated radiotherapy (IMRT) 5 days a week for 4.6 weeks (23 fractions; 56 Gy).
- Arm II: Patients undergo concurrent boost dose IMRT 5 days a week for 3 weeks (15 fractions; 48 Gy).
- Arm III: Patients undergo concurrent boost dose IMRT 5 days a week for 3 weeks (15 fractions; 53 Gy).
Quality-of-life questionnaires are administered at baseline, 6 months, and at 1, 3, and 5 years. Photograph assessments of the breasts are taken at baseline and at 3 and 5 years. Blood samples are collected at baseline and periodically thereafter. Tissue samples are also collected from primary tumor, including new primary tumor in either breast, and recurrent tumor.
After completion of study treatment, patients are followed annually for 10 years.
연구 유형
등록 (예상)
단계
- 3단계
연락처 및 위치
연구 장소
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England
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Sutton, England, 영국, SM2 5PT
- 모병
- Royal Marsden - Surrey
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연락하다:
- John R. Yarnold, MD, FRCR
- 전화번호: 44-20-8661-3388
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
DISEASE CHARACTERISTICS:
Histologically confirmed invasive breast cancer
- Resectable, unilateral disease
- T1-3, N0-1, M0 disease
- Has undergone prior breast conservation surgery with complete microscopic resection AND received appropriate systemic therapy for early breast cancer
Requires a tumor bed boost plus whole breast radiotherapy as indicated by ≥ 1 of the following:
- Age 18-49 years
- Tumor size > 2.0 cm after primary surgery (maximum microscopic diameter of invasive component)
- Tumor of any size treated by primary medical therapy
- Grade III disease
- Minimum microscopic margin of noncancerous tissue < 5 mm (excluding deep margin if at deep fascia)
- Lymphovascular invasion
- Axillary node positive
- Hormone receptor status not specified
PATIENT CHARACTERISTICS:
- Menopausal status not specified
- No prior malignancy other than non-melanoma skin cancer or carcinoma in situ of the cervix
PRIOR CONCURRENT THERAPY:
- See Disease Characteristics
- No prior mastectomy
- No concurrent chemotherapy except primary or sequential chemotherapy
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
|
활성 비교기: Arm I (control)
Patients undergo sequential boost dose intensity-modulated radiotherapy (IMRT) 5 days a week for 4.6 weeks (23 fractions; 56 Gy).
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Given as 48, 53, or 56 Gy
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실험적: Arm II
Patients undergo concurrent boost dose IMRT 5 days a week for 3 weeks (15 fractions; 48 Gy).
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Given as 48, 53, or 56 Gy
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실험적: Arm III
Patients undergo concurrent boost dose IMRT 5 days a week for 3 weeks (15 fractions; 53 Gy).
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Given as 48, 53, or 56 Gy
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
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Palpable induration inside the boost volume of the irradiated breast
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2차 결과 측정
결과 측정 |
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전반적인 생존
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Other late adverse effects in normal tissue as measured by clinical and photographic assessments and patient self-assessments (quality-of-life questionnaires)
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Local tumor control
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Location of tumor relapse in breast
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Contralateral primary tumors
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Regional and distant metastases
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공동 작업자 및 조사자
수사관
- 수석 연구원: John R. Yarnold, MD, FRCR, Royal Marsden NHS Foundation Trust
연구 기록 날짜
연구 주요 날짜
연구 시작
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
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