Trial of pDNA CMV Vaccine (VCL-CT02) Followed by Towne CMV Vaccine (Towne) Challenge

Summary

Objectives of this trial are to: Evaluate the kinetics and magnitude of the CMV-specific immune response post-Towne challenge (3000 pfu) in healthy CMV-seronegative volunteers who receive VCL CT02 administered (1 mg weekly x 3) 3 months previously compared to randomized controls who do not receive VCL CT02 as measured by: 1. antibody titers for gB; 2. T-cell IFN-g ELISPOT; 3. T-cell proliferation assays for IE1, pp65, and/or gB; and 4. cytokine and phenotypic flow cytometry responses to pp65, IE1, and/or gB. Evaluate the safety safety of Towne challenge in healthy CMV-seronegative adult subjects who have previously been immunized with a trivalent pDNA CMV vaccine (VCL-CT02) administered intramuscularly. Our hypothesis is that the immune response to Towne vaccine 3000 pfu challenge after VLC-CT02 priming will be greater than that after Towne vaccination alone.

Timeline

Start

2006-10

Primary completion

2008-02

Completion

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Drugs

Indications