Gene Expression in Tumor Tissue From Women Undergoing Surgery for Breast Cancer or Core Biopsy of the Breast

Pilot Study for Analysis of Tumor Gene Expression by DNA Microarray Analysis in Patients Undergoing Breast Cancer Surgery or Core Biopsy Sampling

RATIONALE: Studying samples of breast tissue in the laboratory may help doctors learn more about the genes and proteins found in breast tissue.

PURPOSE: This phase I trial is studying genes and proteins in breast tissue from women undergoing surgery for breast cancer or core biopsy of the breast.

OBJECTIVES:

• Assess tumor gene expression information from women undergoing surgery for breast cancer or core biopsy sampling of the breast.

OUTLINE: This is a pilot study.

Tumor tissue is collected and analyzed for tumor gene expression by DNA microarray analysis for research studies.

PROJECTED ACCRUAL: A total of 100 patients will be accrued for this study.

DISEASE CHARACTERISTICS:

• Undergoing surgery for breast cancer OR core biopsy sampling of the breast

PATIENT CHARACTERISTICS:

• Not specified

PRIOR CONCURRENT THERAPY:

• Not specified