A Phase I Study of Active Immunotherapy With CAP-1 (6D) and CMVpp65 Peptide-Pulsed, Autologous Dendritic Cells Produced in the Aastromreplicell Cell Production System in Patients With Stage IV CEA Expressing Malignancies

OBJECTIVES:

• Determine the safety and feasibility of administering 1 or 2 courses of vaccination with carcinoembryonic antigen peptide 1-6D (CAP 1-6D)- and CMV pp65 peptide-pulsed autologous dendritic cells in patients with refractory stage IV CEA-expressing malignancies.
• Determine the ability of this regimen to induce CAP 1-6D- and CMV pp65-specific T cells in these patients.
• Determine the antitumor effect of this regimen, in terms of progression-free survival, of these patients.

OUTLINE: This is an open-label, dose-escalation study.

Patients undergo leukapheresis and collection of peripheral blood mononuclear cells from which dendritic cells (DC) are generated and pulsed with carcinoembryonic antigen peptide 1-6D (CAP 1-6D) and CMV pp65 peptide. Patients are assigned to 1 of 2 vaccination cohorts.

• Cohort I: Patients receive vaccination with CAP 1-6D-pulsed DC and CMV pp65 peptide-pulsed DC subcutaneously and intradermally every 3 weeks for a total of 4 vaccinations.
• Cohort II: Patients receive vaccinations as in cohort I every 3 weeks for a total of 8 vaccinations.