Conditions: Advanced Breast Carcinoma; Locally Advanced Breast Carcinoma; Metastatic Breast Carcinoma; Recurrent Breast Carcinoma; Stage III Breast Cancer AJCC v7; Stage IIIA Breast Cancer AJCC v7; Stage IIIB Breast Cancer AJCC v7; Stage IIIC Breast Cancer AJCC v7; Stage IV Breast Cancer AJCC v6 and v7
Interventions: Procedure: Biopsy; Procedure: Biospecimen Collection; Other: Laboratory Biomarker Analysis
Sponsors: Mayo Clinic; National Cancer Institute (NCI)
Active, not **RECRUITING NOW**
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