A Phase I, Multicenter, Randomized Trial to Evaluate the Safety and Immunogenicity of a Recombinant Vaccinia-HIV Envelope Vaccine (HIVAC-1e) in Combination With a Panel of Subunit Recombinant HIV Envelope Vaccines

Summary

Primary: To determine in healthy volunteers whether priming with a vaccinia HIV-1 gp160 envelope gene recombinant vaccine (HIVAC-1e) followed by boosting with one of two subunit recombinant HIV-1 envelope vaccines (Env 2-3 and gp120) provides enhanced immunogenicity compared to vaccination with the gp120 subunit vaccine alone. (Per 10/01/92 amendment, boosts with VaxSyn (gp160) were eliminated.) To evaluate the immunogenicity of one versus two priming doses of HIVAC-1e prior to a boost with gp120. To compare the relative immunogenicity of the three subunit vaccines when administered as boosters. Secondary: To examine the safety of administering the individual subunit vaccines in combination with HIVAC-1e and the safety of administering the gp120 subunit vaccine alone. In a previous study of candidate HIV vaccines, the evidence suggested that administration of a booster vaccination with a different vaccine preparation may produce a better immune response than administration of HIVAC-1e vaccine alone.

Timeline

Start

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Primary completion

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Completion

1994-07

Publications

• Background Clements ML, Corey L, Weinhold K, Schwartz D, Siliciano R, Matthews T, Hsieh R, Graham B, Keefer M, Gorse G, Zolla-Pazner S, Mascola J, Duliege A, Excler J, Tartaglia J, Paoletti E, Hu SL. HIV immunity induced by priming with canarypox or vaccinia-gp160 recombinants and boosting with rgp120. Inst of Hum Virol Annu Meet. 1996 Sept 7-13
• Background Graham BS, Belshe RB, Clements ML, Dolin R, Corey L, Wright PF, Gorse GJ, Midthun K, Keefer MC, Roberts NJ Jr, et al. Vaccination of vaccinia-naive adults with human immunodeficiency virus type 1 gp160 recombinant vaccinia virus in a blinded, controlled, randomized clinical trial. The AIDS Vaccine Clinical Trials Network. J Infect Dis. 1992 Aug;166(2):244-52. doi: 10.1093/infdis/166.2.244.

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