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Vaccine Therapy in Treating Patients With Previously Treated Stage II or Stage III Breast Cancer

2014-08-27 03:32:00 | BioPortfolio

Summary

RATIONALE: Vaccines made from peptides may help the body build an effective immune response to kill tumor cells. It is not yet known which vaccine is most effective in treating breast cancer.

PURPOSE: This randomized clinical trial is studying the side effects of three different vaccine therapies and comparing the vaccines to see how well they work in treating patients with previously treated stage II or stage III breast cancer.

Description

OBJECTIVES:

Primary

- To determine the safety and immunization efficacy of MUC1 and HER-2/neu peptide vaccines combined with CpG oligodeoxynucleotide, sargramostim (GM-CSF), or both, as immune adjuvants suspended in Freund's incomplete adjuvant in patients with previously treated stage II or III adenocarcinoma of the breast.

Secondary

- To describe the impact of immunization on clinical outcomes in patients with MUC1-positive breast cancer in terms of disease-free survival and overall survival.

OUTLINE: Patients are stratified according to Her-2/neu status (positive vs negative). Patients are randomized to 1 of 3 treatment arms.

- Arm A: Patients receive a vaccine comprising incomplete Freund's adjuvant, MUC1 antigen vaccine, two Her-2/neu peptide-based vaccines, and sargramostim (GM-CSF) subcutaneously (SC) on day 1.

- Arm B: Patients receive a vaccine comprising incomplete Freund's adjuvant, MUC1 antigen vaccine, two Her-2/neu peptide-based vaccines (one of them different than in arm A), and CpG oligodeoxynucleotide SC on day 1.

- Arm C: Patients receive a vaccine comprising incomplete Freund's adjuvant, MUC1 antigen vaccine, two Her-2/neu peptide-based vaccines (one of them different than in arm A; the same as in arm B), GM-CSF, and CpG oligodeoxynucleotide SC on day 1.

In all arms, treatment repeats every 4 weeks for 6 courses in the absence of disease progression or unacceptable toxicity. Patients who complete 6 courses of treatment without disease recurrence or a second primary or intolerable toxicity will go to the observation phase of the study for up to 2 years. Patients who develop recurrent disease during the observational phase will go to the event monitoring phase for up to 2 years.

Blood samples are collected periodically. Blood samples and tissue samples from the patient's most recent surgery are used for correlative studies including immune responses to T helper and CTL epitopes by Elispot and tetramer analysis; and antigenic profiling by expression analysis of class I HLA antigens, MUC1, and HER-2 in tumor tissue.

After completion of study treatment, patients are followed periodically until disease recurrence or for up to 2 years.

Study Design

Allocation: Randomized, Primary Purpose: Treatment

Conditions

Breast Cancer

Intervention

CpG oligodeoxynucleotide, HER-2/neu peptide vaccine, MUC-1 peptide vaccine, incomplete Freund's adjuvant, sargramostim, immunoenzyme technique, immunologic technique

Location

Mayo Clinic Scottsdale
Scottsdale
Arizona
United States
85259-5499

Status

Recruiting

Source

National Cancer Institute (NCI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:32:00-0400

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