Blood Levels of Tumor Cells in Predicting Response in Patients Receiving First-Line Chemotherapy for Stage IV Breast Cancer
RATIONALE: Measuring blood levels of tumor cells in patients with breast cancer may help doctors predict how patients will respond to treatment.
PURPOSE: This laboratory study is looking at blood levels of tumor cells in predicting response in patients receiving first-line chemotherapy for stage IV breast cancer.
Genetic: fluorescence in situ hybridization
Other: immunologic technique
Other: laboratory biomarker analysis
|Official Title:||Study Evaluating the Prognostic and Predictive Value of Response to First-Line Chemotherapy by Detection of Circulating Tumor Cells (CTC) in Patients With Metastatic Breast Cancer|
- Correlation of circulating tumor cells (CTC) with overall survival [ Designated as safety issue: No ]
- Correlation of CTC with progression-free survival [ Designated as safety issue: No ]
- Correlation of circulating tumor cells with tumor markers, clinical response, and radiological response [ Designated as safety issue: No ]
- Change in HER-2 status in patients receiving trastuzumab (Herceptin®) [ Designated as safety issue: No ]
|Study Start Date:||May 2007|
|Primary Completion Date:||April 2010 (Final data collection date for primary outcome measure)|
- Predict the overall and progression-free survival of patients with stage IV breast cancer by measuring the rate of circulating tumor cells (CTC) before the second course of chemotherapy.
- Predict overall and progression-free survival of these patients by measuring the rate of CTC before the start of chemotherapy, at the first tumor evaluation, and after 2-3 courses of chemotherapy.
- Correlate the detection of CTC with tumor markers, clinical response, and radiological response.
- Study the changing status of HER-2 in CTC in patients receiving trastuzmab (Herceptin®).
OUTLINE: This is a multicenter study.
Blood samples are collected at baseline, before the second course of chemotherapy, before the third or fourth course of chemotherapy, and when progressive disease is diagnosed (before second-line treatment is initiated). Circulating tumor cells from the blood samples are examined by immunofluorescence.
Patients are followed periodically for up to 3 months.