HER-2 B Cell Peptide Vaccine

Inclusion criteria

• . For the extension cohort to be conducted at the IUSCCC (N=12), patients with histologically documented metastatic or unresectable breast or gastrointestinal cancer will be enrolled.
• . For the expansion cohort (N=30), patients with either histologically documented metastatic or unresectable breast cancer (N=15), or histologically documented metastatic or unresectable gastrointestinal cancer (N=15) be enrolled. All patients enrolled to this cohort are required to have measurable disease. Note: Measurable disease is defined as ≥ 1 lesions that can be accurately measured in ≥ 1 dimensions as ≥ 20 mm with conventional techniques or as ≥ 10 mm with spiral CT scan.
• . Patients must have received or refused first line standard systemic therapy for their metastases (if applicable) and patients with histologically confirmed pancreatic and esophageal cancers must have received no more than two prior cytotoxic chemotherapy regimens in the last two years after standard therapy. Patients with histologically confirmed breast, and gastrointestinal cancers must have received no more than three prior cytotoxic chemotherapy regimens in the last two years after standard therapy.
• . Progressive disease after at least one line of standard therapy.
• . Patients with pancreatic and esophageal cancers must have received no more than two prior cytotoxic chemotherapy regimens in the last two years. Patients with breast and gastrointestinal cancers must have received no more than three prior cytotoxic chemotherapy regimens in the last two years.
• . Patients are required to have HER-2 (IHC 1+, 2+ and 3+) or EGFR over-expression (FISH and IHC) to be enrolled on this study.
• . If the patient has had HER-2 expression measured prior to enrollment, the report alone will be accepted on the expansion phase of the study.