Study of Cancer Peptides Vaccine Plus GM-CSF as Adjuvant Treatment for High Risk (TXN2-3M0) or Metastatic Breast Cancer With No Evidence of Disease

The primary endpoint will be to determine the safety and feasibility of administering cancer peptides to patients with high risk (TxN2-3M0) or metastatic breast cancer with no evidence of disease following their completion of systemic therapy, with the secondary objectives of evaluating immune response disease relapse survival. Two cohorts of 9 patients each will be treated with different doses of the vaccine. They will receive the peptide vaccine subcutaneously on weeks 0,1,2,4,5, and 6 and then receive the immunizations every 1 month for 6 months or disease recurrence. Toxicity will be assessed at each dose level using CTCv3 toxicity criteria.