Safety of and Immune Response to an HIV Vaccine (SF-2 gp120) With or Without MTP-PE/MF59 Adjuvant

Phase 1

Completed

• Conditions: HIV Infections

• Registration Number: NCT00001019
• Lead Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Brief Summary

Part A: To compare the safety and immunogenicity of two dose levels of gp120 (CHO) in MF59 emulsion alone or with MTP-PE/MF59 adjuvant, administered at 0, 1, and 6 months.

Part B: To evaluate the safety and immunogenicity of gp120 in MF59 when administered in five monthly injections.

One experimental AIDS vaccine is the gp120 vaccine. The HIV envelope glycoprotein 120 is manufactured through recombinant DNA technology and used as an immunogen. Antibodies directed against gp120 can neutralize HIV-1, and gp120 can also stimulate certain types of cell-mediated immune responses. Because many immunogens, including candidate HIV vaccines, may evoke relatively weak immune responses, the use of adjuvants, or substances that augment immune responses to vaccines, is of interest. MTP-PE/MF59, composed of the immunomodulator MTP-PE combined with MF59 emulsion, appears to be a promising adjuvant and has been selected for studies with the gp120 vaccine.

Detailed Description

One experimental AIDS vaccine is the gp120 vaccine. The HIV envelope glycoprotein 120 is manufactured through recombinant DNA technology and used as an immunogen. Antibodies directed against gp120 can neutralize HIV-1, and gp120 can also stimulate certain types of cell-mediated immune responses. Because many immunogens, including candidate HIV vaccines, may evoke relatively weak immune responses, the use of adjuvants, or substances that augment immune responses to vaccines, is of interest. MTP-PE/MF59, composed of the immunomodulator MTP-PE combined with MF59 emulsion, appears to be a promising adjuvant and has been selected for studies with the gp120 vaccine.

In Part A, 32 volunteers (eight on each of four treatment arms) are randomized to receive one of two doses (15 or 50 mcg) of gp120 vaccine with either MTP-PE/MF59 adjuvant emulsion or MF59 emulsion alone. The volunteers receive three IM injections at 0, 1, and 6 months. In Part B, 16 female volunteers (eight on each of two treatment arms) are randomized to receive either MF59 emulsion alone (placebo) or MF59 emulsion plus gp120 vaccine (50 mcg). Volunteers receive five IM injections at monthly intervals.

Study Timeline

• Study First Submitted: 1999-11-02
• Study First Submitted QC: 2001-08-30
• Study First Posted: 2001-08-31
• Status Verified: 2012-10
• Last Update Submitted: 2012-10-29
• Last Update Posted: 2012-10-30

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 48

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: Not specified

Trial Locations

Locations (4)

St Louis Univ School of Medicine; 🇺🇸 St Louis, Missouri, United States

Univ of Pennsylvania at Philadelphia; 🇺🇸 Philadelphia, Pennsylvania, United States

Vanderbilt Univ Hosp; 🇺🇸 Nashville, Tennessee, United States

Children's Hospital & Medical Center / Seattle ACTU; 🇺🇸 Seattle, Washington, United States