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RATIONALE: Zoledronate may delay or prevent the formation of bone metastases. It is not yet known whether chemotherapy and/or hormone therapy are more effective with or without zoledronate in preventing cancer recurrence and bone metastases in women with breast cancer.
PURPOSE: This randomized phase III trial is studying giving chemotherapy and/or hormone therapy together with zoledronate to see how well they work compared to chemotherapy and/or hormone therapy alone in preventing cancer recurrence and bone metastases in women with stage II or stage III breast cancer.
- Compare disease-free survival of women with stage II or III breast cancer at high risk of relapse treated with neoadjuvant or adjuvant chemotherapy and/or hormonal therapy with vs without zoledronate.
- Compare time to bone metastases, as first recurrence, in patients treated with these regimens.
- Compare time to bone metastases, per se, in patients treated with these regimens.
- Compare time to distant metastases in patients treated with these regimens.
- Compare overall survival in patients treated with these regimens.
- Compare the reduction in skeletal-related events (fractures, spinal cord compression, radiotherapy to the bone, surgery to the bone, and hypercalcemia) before and after the development of bone metastases in patients treated with these regimens.
- Determine the safety and toxicity of zoledronate in patients treated with these regimens.
- Correlate prognostic factors, such as estrogen-receptor and progesterone-receptor status, TNM stage, tumor grade, HER2/neu status, and menopausal status with treatment outcome in patients treated with these regimens.
- Determine more specific prognostic indicators for the development of bone metastases and factors that are able to predict specific benefit from bisphosphonate treatment using proteomics, tissue micro-array, and other modern techniques in these patients.
OUTLINE: This is a randomized, open-label, parallel-group, multicenter study. Patients are stratified according to participating center. Patients are randomized to 1 of 2 treatment arms.
- Arm I: Patients receive neoadjuvant or adjuvant chemotherapy and/or hormonal therapy. Patients also receive concurrent zoledronate IV over 15 minutes every 3-4 weeks for 6 doses, every 3 months for 8 doses, and then every 6 months for 5 doses in the absence of disease progression or unacceptable toxicity.
- Arm II: Patients receive neoadjuvant or adjuvant chemotherapy and/or hormonal therapy alone.
After completion of study treatment, patients are followed annually for 5 years.
PROJECTED ACCRUAL: A total of 3,300 patients (1,650 per treatment arm) will be accrued for this study within 3 years.
Allocation: Randomized, Control: Active Control, Masking: Open Label, Primary Purpose: Treatment
zoledronic acid, adjuvant therapy, neoadjuvant therapy
Active, not recruiting
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:54:47-0400
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