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CompletedNCT00000958Updated Nov 4, 2021

A Placebo-Controlled, Phase I, Pilot Clinical Trial to Evaluate the Safety and Immunogenicity of ENV 2-3, a Yeast-Derived Recombinant Envelope Protein of Human Immunodeficiency Virus-1, in Combination With MTP-PE/MF59 in Individuals With HIV Infection (Placebo Patients Receive MF59 Emulsion Only)

A Phase 1 interventional study of MTP-PE/MF59 and Env 2-3 in HIV Infections, sponsored by National Institute of Allergy and Infectious Diseases (NIAID). Completed at 1 site in United States. Open to participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2021-11-04.

Sponsored by National Institute of Allergy and Infectious Diseases (NIAID) · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
8
Ages
18 Years to 50 Years
Sex
All
01

Study summary

To determine the safety and immunogenicity of Env 2-3 in combination with MTP-PE/MF59 adjuvant in adult volunteers with HIV infection.

By vaccinating those who have HIV infection, perhaps the replication (reproduction) of existing viral strains can be suppressed and the asymptomatic period early in the infectious process can be prolonged. One potential way to do this is to boost HIV antigen-specific CD4 responses, which may in turn increase the effectiveness of CD8 killing of HIV infected cells.

Read the detailed description

By vaccinating those who have HIV infection, perhaps the replication (reproduction) of existing viral strains can be suppressed and the asymptomatic period early in the infectious process can be prolonged. One potential way to do this is to boost HIV antigen-specific CD4 responses, which may in turn increase the effectiveness of CD8 killing of HIV infected cells.

Eight patients are entered in the pilot portion of the study, thirty patients are entered on Part A and fifteen patients are entered on Part B. In the pilot study, patients receive 30 mcg Env 2-3 vaccine plus 0 - 10 mcg MTP-PE/MF59 adjuvant. Patients on Part A receive one of the following: MF59 emulsion only; 100 mcg MTP-PE/MF59 only; 30 mcg Env 2-3 with MF59 emulsion only; or 30 mcg Env 2-3 vaccine with 100 mcg MTP-PE/MF59. Patients on Part B receive either 100 mcg MTP-PE/MF59 only or 30 mcg Env 2-3 vaccine plus 100 mcg MTP-PE/MF59. Treatment is administered on days 0, 28, and 112, and patients are followed for up to 10 months. Per amendment, patients may receive two additional doses of 30 mcg Env 2-3 or placebo in MTP-PE/MF59 at 7 and 10 months (Parts A and B) or 9 and 12 months (Pilot study) after their initial inoculation.

02

Conditions studied

  • HIV Infections

Keywords

  • Vaccines, Synthetic
  • Recombinant Proteins
  • Adjuvants, Immunologic
  • Acquired Immunodeficiency Syndrome
  • HIV Envelope Protein gp120
  • AIDS Vaccines
  • HIV Therapeutic Vaccine
03

In context

Infections

6,687 studies on the registry are indexed under Infections; 807 are open to participants now.

This study's enrollment of 8 is below the median of 120 across 4,200 interventional studies indexed under Infections.

Browse Infections studies →

Lead sponsor

National Institute of Allergy and Infectious Diseases (NIAID) is the lead sponsor of 2,401 studies on the registry; 179 are open to participants now.

Of its 396 completed or terminated interventional studies of FDA-regulated products, 294 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Patients must be:

  • Healthy HIV-seropositive adults (generalized lymphadenopathy, seborrheic dermatitis acceptable).
  • Negative for HIV plasma culture.
  • Available for 6 months follow-up (patients in Pilot study) or 10 months follow-up (patients in Parts A and B).

Prior Medication: Required:

  • Part B: Zidovudine (AZT), tolerating a dose of 500 - 600 mg/day for at least 4 months prior to entry.

Exclusion criteria

Exclusion Criteria

Co-existing Condition:

Patients with the following conditions or symptoms are excluded:

  • Evidence of psychological disorder during the past year that would impair adherence to the protocol.
  • Evidence of an AIDS defining opportunistic infection.

Prior Medication:

Excluded:

  • Any potential immunomodulating agents (e.g., isoprinosine, imuthiol, lithium) within 90 days of screening.
  • Immunosuppressive medications during the past 3 months.
  • Part A: Use of zidovudine (AZT) for more than 30 days in the preceding 6 months, or any AZT within the last 30 days.
  • Parts A and B: Any non-AZT antiretroviral drug.
  • Any other investigational agent within the past 30 days.
  • Immunoglobulins within the past 60 days.

Patients may not have the following prior conditions:

  • Evidence of psychological disorder during the past year that would impair adherence to the protocol.
  • History of an AIDS-defining opportunistic infection.

Use of illicit drugs or significant amounts of alcohol that, in the opinion of the principal investigator, would interfere with compliance with the study.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Enrollment
8 participants

Interventions

  • BiologicalMTP-PE/MF59
  • BiologicalEnv 2-3
06

Study locations

1 site
  • Univ. of Rochester AVEG
    Rochester, New York 14642, United States
07

References and documents

Publications

  • Keefer MC, Graham BS, McElrath MJ, Matthews TJ, Stablein DM, Corey L, Wright PF, Lawrence D, Fast PE, Weinhold K, Hsieh RH, Chernoff D, Dekker C, Dolin R. Safety and immunogenicity of Env 2-3, a human immunodeficiency virus type 1 candidate vaccine, in combination with a novel adjuvant, MTP-PE/MF59. NIAID AIDS Vaccine Evaluation Group. AIDS Res Hum Retroviruses. 1996 May 20;12(8):683-93. doi: 10.1089/aid.1996.12.683. PubMed 8744579 ↗
  • Mohamed OA, Ashley R, Goldstein A, McElrath J, Dalessio J, Corey L. Detection of rectal antibodies to HIV-1 by a sensitive chemiluminescent western blot immunodetection method. J Acquir Immune Defic Syndr (1988). 1994 Apr;7(4):375-80. PubMed 8133447 ↗
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 4, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00000958
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
Collaborators
Biocine
Responsible party
Sponsor
First posted
Aug 31, 2001
Completion
Sep 1995
Last update
Nov 4, 2021

Study contacts

Corey L
study chair
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Oct 2021. You cannot join it, but the record below documents what was studied.

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