This study is comparing two different radiation therapy approaches for early breast cancer to see which one is better for patients. One group will receive radiation over one week (based on the FAST-FORWARD trial), and the other group will receive radiation over two weeks with an extra focused dose (called a "concomitant boost"). The study will look at how the treatments affect side effects, breast appearance, and cancer control in the breast. It also aims to find out if the two-week treatment does a better job at preventing cancer from coming back in the breast over the long term.
Radiotherapy: one week (Arm 1) 2600 cGy in 5 fractions whole breast radiotherapy over one week versus 2 weeks (Arm 2), 3200 cGy in 10 fractions with a concomitant tumor bed boost to 3600 cGy. In Arm 2, if no cavity is visible due to oncoplastic surgery, we will deliver 32 Gy to the whole breast only, without a boost. Hypothesis: A regimen of whole breast radiotherapy to 2600 in five fractions, the current UK standard for early breast cancer (Arm 2), is not inferior to 3200cGy with a concomitant tumor bed boost to 3600 cGy in 10 fractions (Arm 1), in terms of acute toxicity and long-term fibrosis, breast cosmesis and local control at 2 and 5 years. It will also test the hypothesis of superior local control at 10 years in Arm 2 compared to Arm 1.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
400
2600 cGy whole breast radiotherapy in five fractions (Arm 1) over 1 week
3200 cGy whole breast radiotherapy with a concomitant tumor bed boost to 3600 cGy in 10 fractions (Arm 2) over 2 weeks. In Arm 2, if no cavity is visible due to oncoplastic surgery, we will deliver 32 Gy to the whole breast only, without a boost.
Brooklyn Methodist Hospital
New York, New York, United States
RECRUITINGNew York Presbyterian Hospital
New York, New York, United States
RECRUITINGNew York-Presbyterian Weill Cornell Medical College
New York, New York, United States
RECRUITINGRate of RT-related acute toxicity
The rate of RT-related acute toxicity is defined as cumulative acute toxicity events from the start of radiation treatment to 1 month follow up post RT. The toxicities will be graded by the research nurses assigned to the study according to Common Terminology Criteria for Adverse Events, version 5.0.
Time frame: 1 month
The long-term evaluations at 2 years of fibrosis based on LENT/SOMA
The number of subjects scoring Grades 1 through 4 using the LENT/SOMA (Late Effects Normal Tissues (LENT)-Subjective, Objective, Management, Analytic (SOMA)) system will be reported. The patients will grade the following items based on the following scale: 1. Mild 2. Moderate 3. Severe 4. Life-threatening
Time frame: 24 months
The long-term evaluations at 2 years of breast cosmesis
Patient self-reported breast cosmesis will be assessed using the BCTOS questionnaire (Breast Cancer Treatment Outcome Scale).The number of subjects scoring Grades 1 through 4 will be reported. The patients will grade the following items based on the following scale: 1. = No difference between treated and untreated breast/area 2. = Slight difference 3. = Moderate difference 4. = Large difference
Time frame: 24 months
The long-term evaluations at 2 years of local control
Number of subjects with Local control at 2 years will be extracted from the medical record, and can be derived from clinical reports from medical, surgical or radiation oncologists as well as from the primary care doctor who is following the patient.
Time frame: 24 months
The long-term evaluations at 5 years OF fibrosis based on LENT/SOMA
The number of subjects scoring Grades 1 through 4 using the LENT/SOMA (Late Effects Normal Tissues (LENT)-Subjective, Objective, Management, Analytic (SOMA)) system will be reported. The patients will grade the following items based on the following scale: 1. Mild 2. Moderate 3. Severe 4. Life-threatening
Time frame: 60 months
The long-term evaluations at 5 years of breast cosmesis
Patient self-reported breast cosmesis will be assessed using the BCTOS questionnaire (Breast Cancer Treatment Outcome Scale). The number of subjects scoring Grades 1 through 4 will be reported. The patients will grade the following items based on the following scale: 1. = No difference between treated and untreated breast/area 2. = Slight difference 3. = Moderate difference 4. = Large difference
Time frame: 60 months
The long-term evaluations at 5 years of local control.
Number of subjects with Local control at 5 years will be extracted from the medical record, and can be derived from clinical reports from medical, surgical or radiation oncologists as well as from the primary care doctor who is following the patient.
Time frame: 60 months
Superior local control at 10 years
Number of subjects with Local control at 10 years will be extracted from the medical record, and can be derived from clinical reports from medical, surgical or radiation oncologists as well as from the primary care doctor who is following the patient.
Time frame: 120 months
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