Randomized Trial Testing Dose Escalated Intensity Modulated Radiotherapy for Women Treated by Breast Conservation Surgery and Appropriate 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.
OBJECTIVES:
OUTLINE: This is a multicenter study. Patients are stratified according to center. Patients are randomized to 1 of 3 treatment arms.
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.
DISEASE CHARACTERISTICS:
Histologically confirmed invasive breast cancer
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:
Hormone receptor status not specified
PATIENT CHARACTERISTICS:
PRIOR CONCURRENT THERAPY: