A Phase I, Randomized, Double-Blind, Placebo-Controlled, Clinical Trial to Compare the Safety and Immunogenicity of Recombinant Envelope Protein rgp120/HIV-1SF2 (BIOCINE) Combined With Seven Adjuvants in Healthy HIV-1 Uninfected Individuals

HIV Infections Clinical Trial

Official title:
A Phase I, Randomized, Double-Blind, Placebo-Controlled, Clinical Trial to Compare the Safety and Immunogenicity of Recombinant Envelope Protein rgp120/HIV-1SF2 (BIOCINE) Combined With Seven Adjuvants in Healthy HIV-1 Uninfected Individuals

Status Completed

Clinical Trial Summary

To determine in healthy HIV-negative volunteers the safety and immunogenicity of rgp120/HIV-1SF2 (BIOCINE) formulated with each of seven adjuvants. PER AMENDMENT 3/6/96: Purpose of the extension study - To determine the ability of immunization with rgp 120/SF-2 to induce an HIV-1 envelope-specific delayed-type hypersensitivity (DTH) response in volunteers who receive rsgp 120/MN skin testing. One approach to improve the immunogenicity of an HIV-1 subunit protein vaccine is to combine the immunogen with an adjuvant. Adjuvants may augment vaccine immunogenicity by several mechanisms, and as a result induce a more favorable antibody response with high titers, which appear earlier in the course of immunization and persist over time.

Clinical Trial Description

One approach to improve the immunogenicity of an HIV-1 subunit protein vaccine is to combine the immunogen with an adjuvant. Adjuvants may augment vaccine immunogenicity by several mechanisms, and as a result induce a more favorable antibody response with high titers, which appear earlier in the course of immunization and persist over time. Volunteers are randomized to receive 50 mcg rgp120/HIV-1SF2 in combination with one of seven different adjuvants: aluminum hydroxide (alum), monophosphoryl lipid A, liposome-encapsulated monophosphoryl lipid A, MF59, MTP-PE/MF59, Syntex adjuvant formulation (SAF/2), and SAF/2 plus threonyl muramyl dipeptide (threonyl MDP). An additional placebo control arm of volunteers receive alum only. Doses are administered at 0, 2, and 6 months. Volunteers are followed for 1 year after the last immunization. Per 8/5/94 amendment, eligible volunteers except those who received monophosphoryl lipid A for the first three immunizations may receive a fourth dose at month 15. PER AMENDMENT 3/6/96: Extension Study- Protocol 015 has been modified to add a special DTH study. At the end of the study, on day 784, intradermal injections of MN rsgp 120 will be administered to consenting volunteers who have received 4 immunizations as part of protocol 015. Follow up will be extended to 56 days after administration of the intradermal injections. ;

Study Design

Related Conditions & MeSH terms

HIV Infections

Clinical Trial Details

NCT number	NCT00001042
Study type	Interventional
Source	National Institute of Allergy and Infectious Diseases (NIAID)
Contact
Status	Completed
Phase	Phase 1
Completion date	March 1996

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