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About
RATIONALE: Eating a diet rich in soy foods may slow the progression of some types of cancer. Isoflavones are compounds found in soy food that may slow the growth of breast cancer cells and prevent further development of breast cancer.
PURPOSE: Randomized pilot trial to study the effectiveness of isoflavones in preventing further development of breast cancer in women who are planning to undergo mastectomy or lumpectomy.
Full description
OBJECTIVES:
OUTLINE: This is a randomized, placebo-controlled, double-blind study. Patients are stratified according to the phase of the menstrual cycle at time of biopsy and time of surgery (follicular phase [i.e., during first 7 days of menstrual cycle] vs luteal phase [i.e., after day 7 of the menstrual cycle]). Patients are randomized to one of two treatment arms.
In both arms, treatment continues for 2-4 weeks depending on time from study entry to planned surgical procedure.
PROJECTED ACCRUAL: A total of 106 patients (53 per treatment arm) will be accrued for this study within 18 months.
Enrollment
Sex
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Volunteers
Inclusion and exclusion criteria
DISEASE CHARACTERISTICS:
Undergoing breast biopsy for any stage breast cancer
Definitive surgery (mastectomy or lumpectomy) planned for 2-4 weeks after registration to this study
Hormone receptor status:
PATIENT CHARACTERISTICS:
Age:
Sex:
Menopausal status:
Performance status:
Life expectancy:
Hematopoietic:
Hepatic:
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PRIOR CONCURRENT THERAPY:
Biologic therapy:
Chemotherapy:
Endocrine therapy:
Radiotherapy:
Surgery:
Other:
Primary purpose
Allocation
Interventional model
Masking
1 participants in 2 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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