Trastuzumab With or Without Tamoxifen in Treating Women With Progressive Stage IV Breast Cancer
Study Details
Study Description
Brief Summary
RATIONALE: Monoclonal antibodies such as trastuzumab can locate tumor cells and either kill them or deliver tumor-killing substances to them without harming normal cells. Estrogen can stimulate the growth of breast cancer cells. Hormone therapy using tamoxifen may fight breast cancer by blocking the uptake of estrogen. Combining trastuzumab with tamoxifen may kill more tumor cells.
PURPOSE: Randomized phase III trial to compare the effectiveness of trastuzumab with or without trastuzumab in treating women who have invasive stage IV breast cancer.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
| Phase 3 |
Detailed Description
OBJECTIVES:
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Compare time to progression in women with progressive, stage IV, estrogen or progesterone receptor- and HER2/neu-positive breast cancer treated with trastuzumab (Herceptin) with or without tamoxifen.
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Correlate response with type of measurement (immunohistochemistry or fluorescent in situ hybridization) of HER2/neu expression in patients treated with these regimens.
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Compare objective response rate (complete or partial response) in patients treated with these regimens.
OUTLINE: This is a randomized study. Patients are stratified according to prior adjuvant treatment (yes vs no), ECOG performance status (0-1 vs 2), and prior aromatase inhibitor treatment (yes vs no). Patients are randomized to 1 of 2 treatment arms.
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Arm I: Patients receive trastuzumab (Herceptin) IV over 60-90 minutes on day 1.
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Arm II: Patients receive trastuzumab as in arm I and oral tamoxifen once daily on days 1-21.
In both arms, treatment repeats every 3 weeks for at least 2 courses in the absence of disease progression or unacceptable toxicity.
Patients are followed every 3 months for 5 years.
PROJECTED ACCRUAL: A total of 280 patients (140 per treatment arm) will be accrued for this study within 28 months.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: trastuzumab Patients receive trastuzumab (Herceptin) IV over 60-90 minutes on day 1. Treatment repeats every 3 weeks for at least 2 courses in the absence of disease progression or unacceptable toxicity. Patients are followed every 3 months for 5 years. |
Drug: trastuzumab
|
| Experimental: trastuzumab + tamoxifen Patients receive trastuzumab V over 60-90 minutes on day 1 and oral tamoxifen once daily on days 1-21. In both arms, treatment repeats every 3 weeks for at least 2 courses in the absence of disease progression or unacceptable toxicity. Patients are followed every 3 months for 5 years. |
Drug: tamoxifen
Drug: trastuzumab
|
Outcome Measures
Primary Outcome Measures
- Time to progression [Up to 5 years]
Secondary Outcome Measures
- response [Up to 5 years]
- response rate [Up to 5 years]
Eligibility Criteria
Criteria
DISEASE CHARACTERISTICS:
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Histologically confirmed invasive stage IV breast cancer
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Hormone receptor status:
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HER2/neu positive (3+ by immunohistochemical [IHC] assay or fluorescent in situ hybridization [FISH])
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Estrogen receptor or progesterone receptor positive
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Measurable or evaluable disease
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Must have disease progression within 6 months of initiation of tamoxifen (administered in the adjuvant or metastatic setting) or during aromatase inhibitor therapy
PATIENT CHARACTERISTICS:
Age
- 18 and over
Sex
- Female
Performance status
- ECOG 0-2
Hematopoietic
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Absolute neutrophil count at least 1,000/mm^3
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Platelet count at least 75,000/mm^3
Hepatic
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Bilirubin no greater than 1.5 times upper limit of normal (ULN)
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SGOT and SGPT no greater than 2.5 times ULN
Cardiovascular
- LVEF normal by MUGA
Other
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Not pregnant or nursing
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Fertile patients must use effective nonhormonal contraception during and for at least 2 months after study completion
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No other concurrent active malignancy except nonmelanoma skin cancer
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Patients who have completed prior therapy and are at less than 30% risk of relapse are not considered to have an active malignancy
PRIOR CONCURRENT THERAPY:
Biologic therapy
- No prior trastuzumab (Herceptin) in the adjuvant or metastatic setting
Chemotherapy
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No more than 1 prior chemotherapy regimen in the metastatic setting
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No concurrent chemotherapy
Endocrine therapy
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See Disease Characteristics
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No more than 1 prior hormonal therapy regimen for metastatic disease
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Prior aromatase inhibitor therapy administered in the first-line metastatic or adjuvant setting is allowed provided there is disease progression on tamoxifen
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No other concurrent hormonal therapy except the following:
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Steroids for adrenal failure
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Hormones for nondisease-related conditions (e.g., insulin for diabetes)
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Intermittent use of dexamethasone as an antiemetic
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Vaginal estrogen (or Estring®) for vaginal dryness
Radiotherapy
- No concurrent palliative radiotherapy except whole brain irradiation for CNS disease
Other
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Concurrent bisphosphonates allowed
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No concurrent cardioprotective drugs
Contacts and Locations
Locations
No locations specified.Sponsors and Collaborators
- Alliance for Clinical Trials in Oncology
- National Cancer Institute (NCI)
Investigators
- Study Chair: Joanne E. Mortimer, MD, Sentara Cancer Center
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- CALGB-49903
- CDR0000269409