Cancer Immunology, Immunotherapy

, Volume 57, Issue 10, pp 1511–1521 | Cite as

The E75 HER2/neu peptide vaccine

  • Elizabeth A. Mittendorf
  • Jarrod P. Holmes
  • Sathibalan Ponniah
  • George E. Peoples
Symposium Paper

Abstract

E75 (HER2/neu 369–377) is an immunogenic peptide from the HER2/neu protein which is overexpressed in many breast cancer patients. A large amount of preclinical work and a small number of Phase I trials have been completed evaluating the vaccine potential of the E75 peptide mixed with an immunoadjuvant. Our group has performed two concurrent E75 + GM-CSF Phase II trials in node-positive and node-negative disease-free breast cancer patients. These trials, totaling 186 patients, were designed to assess the ability of the E75 vaccine to prevent disease recurrence in these high risk patients. In this review article, we discuss the safety of the vaccine, the immunologic response to the peptide, and most importantly, the potential clinical benefit of the vaccine. The recurrence rate, mortality associated with recurrence, and the distribution of recurrences are presented and discussed. Additionally, the lessons learned from these trials to include optimal dosing and the need for booster inoculations are addressed. We also present data exploring possible explanations and mechanisms behind the potential clinical utility of this simple single epitope vaccine. Finally, we present some of the future directions for our Cancer Vaccine Development Program assessing multi-epitope peptide vaccines and combination immunotherapies.

Keywords

Breast cancer E75 Peptide Vaccine Clinical trials 

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Copyright information

© US Government 2008

Authors and Affiliations

  • Elizabeth A. Mittendorf
    • 1
  • Jarrod P. Holmes
    • 2
    • 3
  • Sathibalan Ponniah
    • 3
  • George E. Peoples
    • 3
    • 4
  1. 1.Department of Surgical OncologyThe University of Texas M. D. Anderson Cancer CenterHoustonUSA
  2. 2.Division of Hematology and Medical Oncology, Department of MedicineNaval Medical Center San DiegoSan DiegoUSA
  3. 3.Cancer Vaccine Development Program, Department of SurgeryUnited States Military Cancer Institute, Uniformed Services University of the Health SciencesBethesdaUSA
  4. 4.Department of Surgery, General Surgery ServiceBrooke Army Medical CenterHoustonUSA

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