Completed

Evaluation of Tolerability and Safety of a Recombinant Purified HIV Envelope Vaccine

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What is being tested

Data Collection

Who is being recruted

Blood-Borne Infections+11

+ Urogenital Diseases

+ Genital Diseases

Over 18 Years
See all eligibility criteria
How is the trial designed

Prevention Study

Phase 1
Interventional
Study Start: August 2003
See protocol details

Summary

Principal SponsorNational Institute of Allergy and Infectious Diseases (NIAID)
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: August 1, 2003

Actual date on which the first participant was enrolled.

EnvPro is a recombinant, purified envelope protein vaccine with an aluminum hydroxide (alum) adjuvant. Aluminum hydroxide is licensed as an adjuvant in other vaccines, such as the hepatitis B vaccine. This study will examine the safety and tolerability of EnvPro with alum adjuvant in healthy, HIV uninfected adults. All participants in this study will receive vaccine injections in the upper arm muscle. Participants will receive a second vaccine injection eight weeks after the first injection. Blood tests will be performed at study visits before the vaccine is given, during the eight weeks between injections, and at selected times for up to three years after the vaccine is given.

Official TitleEvaluation of Tolerability and Safety of a Recombinant Purified HIV Envelope Vaccine 
Principal SponsorNational Institute of Allergy and Infectious Diseases (NIAID)
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

10 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Prevention Study

Prevention studies aim to stop a disease from developing. They often involve people at risk and test things like vaccines, lifestyle changes, or preventive medications.


Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Blood-Borne InfectionsUrogenital DiseasesGenital DiseasesCommunicable DiseasesImmunologic Deficiency SyndromesImmune System DiseasesInfectionsRetroviridae InfectionsRNA Virus InfectionsSexually Transmitted DiseasesVirus DiseasesSexually Transmitted Diseases, ViralHIV InfectionsLentivirus Infections

Criteria

Inclusion Criteria: * HIV uninfected * Normal medical history and physical exam * Normal complete blood count * Normal liver function * Normal renal function * Normal serum creatine phosphokinase (CPK) * Availability for at least 1 year follow-up Exclusion Criteria: * History of immunosuppressive illness, chronic illness, or use of any immunosuppressive medications * Medical or psychiatric condition or occupational responsibilities which preclude compliance with the study * Live attenuated vaccines within 60 days of study entry * Use of experimental agents within 30 days of study entry

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

St. Jude Children's Research Hospital

Memphis, United StatesSee the location
CompletedOne Study Center