A Phase I Randomized Trial to Evaluate the Safety and Immunogenicity of Vaccinia-HIV Envelope Recombinant Vaccine (HIVAC-1e) in Combination With Soluble Recombinant Envelope Vaccine (VaxSyn)
Summary
Primary: To determine whether additional boosting with soluble recombinant gp160 vaccine (VaxSyn) after priming with a vaccinia-HIV envelope recombinant (HIVAC-1e) provides a significant advantage in the degree and duration of immunogenicity. Secondary: To learn more about the safety of the combination use of the two HIV envelope vaccines in the study (VaxSyn and HIVAC-1e). Recent Phase I trials conducted at the AIDS Vaccine Units have shown that antibodies have persisted in most recipients for 6 months after boosting, and responses seem significantly higher and more persistent than responses achieved by just two doses of soluble protein vaccine alone or two doses of HIVAC-1e alone. This study tests in a previously recruited cohort of volunteers whether additional boosting with soluble recombinant gp160 results in increased immunogenicity of longer duration.
Timeline
- Start
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- Primary completion
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- Completion
- 1992-12
Publications
- Background McElrath MJ, Corey L, Greenberg PD. Evaluation of cytotoxic T cell responses to candidate HIV-1 vaccines in HIV-1-uninfected individuals. AIDS Res Hum Retroviruses. 1994;10 Suppl 2:S69-72.
- Background Kent SJ, Greenberg PD, Hoffman MC, Akridge RE, McElrath MJ. Antagonism of vaccine-induced HIV-1-specific CD4+ T cells by primary HIV-1 infection: potential mechanism of vaccine failure. J Immunol. 1997 Jan 15;158(2):807-15.
- Background Mosier DE, Gulizia RJ, MacIsaac PD, Corey L, Greenberg PD. Resistance to human immunodeficiency virus 1 infection of SCID mice reconstituted with peripheral blood leukocytes from donors vaccinated with vaccinia gp160 and recombinant gp160. Proc Natl Acad Sci U S A. 1993 Mar 15;90(6):2443-7. doi: 10.1073/pnas.90.6.2443.
- Background McElrath J, Peterson E, Dragavon J, Berger D, Hoffman M, Klucking S, Greenberg P, Corey L. Combination prime-boost approach to HIV vaccination in seronegative individuals: enhanced immunity with additional subunit gp160 protein boosting. Int Conf AIDS. 1992 Jul 19-24;8(1):Mo9 (abstract no MoB 0027)
- Background McElrath MJ, Rabin M, Hoffman M, Klucking S, Garcia JV, Greenberg PD. Evaluation of human immunodeficiency virus type 1 (HIV-1)-specific cytotoxic T-lymphocyte responses utilizing B-lymphoblastoid cell lines transduced with the CD4 gene and infected with HIV-1. J Virol. 1994 Aug;68(8):5074-83. doi: 10.1128/JVI.68.8.5074-5083.1994.
- Background McElrath MJ, Corey L, Greenberg PD, Matthews TJ, Montefiori DC, Rowen L, Hood L, Mullins JI. Human immunodeficiency virus type 1 infection despite prior immunization with a recombinant envelope vaccine regimen. Proc Natl Acad Sci U S A. 1996 Apr 30;93(9):3972-7. doi: 10.1073/pnas.93.9.3972.
- Background Cooney EL, McElrath MJ, Corey L, Hu SL, Collier AC, Arditti D, Hoffman M, Coombs RW, Smith GE, Greenberg PD. Enhanced immunity to human immunodeficiency virus (HIV) envelope elicited by a combined vaccine regimen consisting of priming with a vaccinia recombinant expressing HIV envelope and boosting with gp160 protein. Proc Natl Acad Sci U S A. 1993 Mar 1;90(5):1882-6. doi: 10.1073/pnas.90.5.1882.