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.
Description
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.
Seventy healthy volunteers are randomized to one of four groups. Groups A and D receive one initial immunization with HIVAC-1e followed by two boosts with subunit gp120 and Env 2-3, respectively, at months 8 and 12. Group B receives two immunizations with HIVAC-1e at months 0 and 8 followed by a single boost with subunit gp120 at month 12. Group C receives three doses of subunit gp120 only at months 0, 8 and 12. (Per 10/01/92 amendment, boosts with VaxSyn (gp160) have been eliminated.) Subjects are followed for 18 months.
Study Design
Endpoint Classification: Safety Study, Primary Purpose: Prevention
Conditions
HIV Infections
Intervention
rgp120/HIV-1 SF-2, Env 2-3, HIVAC-1e, gp160 Vaccine (MicroGeneSys)
Location
Johns Hopkins Univ / School of Hygiene & Public Health
Baltimore
Maryland
United States
212051901
Status
Completed
Source
National Institute of Allergy and Infectious Diseases (NIAID)
Results (where available)
Links
- Source: http://clinicaltrials.gov/show/NCT00000746
- Information obtained from ClinicalTrials.gov on July 15, 2010
Published on BioPortfolio: 2014-08-27T03:59:57-0400
Clinical Trials
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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 a...
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Primary: To determine whether combination vaccination, i.e., priming with a vaccinia recombinant-containing HIV envelope (HIVAC-1e) followed by boosting with a recombinant subunit envelope...
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