Studying Blood and DNA Samples From Patients With Breast Cancer Treated With Chemotherapy With or Without Trastuzumab

Conditions

• Breast Cancer

Interventions

• GENETIC: DNA analysis
• GENETIC: gene expression analysis
• GENETIC: polymerase chain reaction
• OTHER: enzyme-linked immunosorbent assay
• OTHER: laboratory biomarker analysis

Sponsor

Alliance for Clinical Trials in Oncology

Collaborators

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