Studying Blood Samples in Women With Breast Cancer or a History of Breast Cancer

Study Overview
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Brief Summary
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RATIONALE: Studying samples of blood in the laboratory from patients with current or previous cancer may help doctors learn more about biomarkers related to cancer. PURPOSE: This research study is looking at blood samples in women with breast cancer or a history of breast cancer.

Detailed Description
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OBJECTIVES: Primary To compare peripheral blood (PB) concentrations of circulating endothelial cells (CEC) in women with measurable, active breast cancer to PB concentrations of CEC in a control population of women with a history of breast cancer who are currently without evidence of active disease. Secondary To compare in women with measurable breast cancer the relationship between PB concentrations of CEC prior to and at 3 and 6 weeks following initiation of a new chemotherapy or hormonal therapy, and correlate these values with clinical response to treatment to determine if CEC can be used as a tumor marker or indicator of disease burden. To compare PB concentrations of CEC to levels of plasma proteins associated with angiogenesis, including vascular endothelial growth factor, in women with active or a prior history of breast cancer. OUTLINE: Peripheral blood and plasma samples are collected for analysis of circulating endothelial cells (CEC) and angiogenic growth factor levels. Blood samples from patients initiating a new chemotherapy or hormonal therapy for breast cancer are collected at baseline and at 3 and 6 weeks following the start of treatment. CEC are quantified via flow cytometry and plasma angiogenic markers are assessed via ELISA. PROJECTED ACCRUAL: A total of 100 patients with active, measurable breast cancer and 100 patients with a prior history of breast cancer will be accrued for this study.

Official Title
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QUANTIFICATION OF CIRCULATING ENDOTHELIAL CELLS (CEC) AND PLASMA ANGIOGENIC FACTORS IN PATIENTS WITH BREAST CANCER

Conditions
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Breast Cancer

Intervention / Treatment
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* Other: flow cytometry
* Other: immunoenzyme technique
* Other: laboratory biomarker analysis


Participation Criteria
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Eligibility Criteria
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DISEASE CHARACTERISTICS: Meets 1 of the following criteria: Receiving treatment for measurable breast cancer at the Arizona Cancer Center Clinic Being followed for a prior history of breast cancer (with no evidence of active disease) at the Arizona Cancer Center Hormone receptor status not specified PATIENT CHARACTERISTICS: Menopausal status not specified Not pregnant or nursing PRIOR CONCURRENT THERAPY: See Disease Characteristics
Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Other: flow cytometry|nan|
|Other: immunoenzyme technique|nan|
|Other: laboratory biomarker analysis|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Comparison of levels of peripheral blood (PB) circulating endothelial cells (CEC) and plasma angiogenic factors between patients with active, measurable breast cancer vs prior history of breast cancer with no evidence of active disease |  |  | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Correlation of CEC and plasma angiogenic factors with response to tumor to a chemotherapy regimen |  |  | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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breast cancer