- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00000631
A Phase I Randomized Trial to Evaluate the Safety and Immunogenicity of Vaccinia-HIV Envelope Recombinant Vaccine (HIVAC-1e) in Combination With Soluble Recombinant Envelope Vaccine (VaxSyn)
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 advantage in the degree and duration of immunogenicity. Secondary: To learn more about the safety of the combination use of the two HIV envelope vaccines in the study (VaxSyn and HIVAC-1e).
Recent Phase I trials conducted at the AIDS Vaccine Units have shown that antibodies have persisted in most recipients for 6 months after boosting, and responses seem significantly higher and more persistent than responses achieved by just two doses of soluble protein vaccine alone or two doses of HIVAC-1e alone. This study tests in a previously recruited cohort of volunteers whether additional boosting with soluble recombinant gp160 results in increased immunogenicity of longer duration.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Recent Phase I trials conducted at the AIDS Vaccine Units have shown that antibodies have persisted in most recipients for 6 months after boosting, and responses seem significantly higher and more persistent than responses achieved by just two doses of soluble protein vaccine alone or two doses of HIVAC-1e alone. This study tests in a previously recruited cohort of volunteers whether additional boosting with soluble recombinant gp160 results in increased immunogenicity of longer duration.
Twelve volunteers who have previously received two doses of HIVAC-1e (or DryVax) and two doses of gp160 receive an additional boost of gp160 at 12-20 months after the last boost and an additional dose of HIVAC-1e at least 9 months after the final gp160 boost.
Study Type
Enrollment
Phase
- Phase 1
Contacts and Locations
Study Locations
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Washington
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Seattle, Washington, United States, 981050371
- Children's Hospital & Medical Center / Seattle ACTU
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria
Patients must have:
- Normal history and physical exam.
- Negative ELISA for HIV.
- Negative HIV p24 antigen test.
- Normal urinalysis.
Prior Medication: Required:
- Two prior doses of HIVAC-1e (or DryVax) and two prior doses of gp160 vaccine.
Exclusion Criteria
Co-existing Condition:
Patients with the following symptoms and conditions are excluded:
- Risk factors for HIV infection including active intravenous drug use and more than 2 sexual partners.
- History of immunodeficiency or chronic illness.
- Hypersensitivity to insects.
- Medical or psychiatric condition that makes it unlikely the patient will comply with the protocol.
Patients with the following prior conditions are excluded:
- History of immunodeficiency or chronic illness.
Prior Medication:
Excluded:
- Immunosuppressive medications.
Prior Treatment:
Excluded:
- Blood or blood product transfusion within the past 6 months.
Risk Behavior: Excluded:
- Intravenous drug use.
- More than 2 sexual partners.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Masking: None (Open Label)
Collaborators and Investigators
Publications and helpful links
General Publications
- McElrath MJ, Corey L, Greenberg PD. Evaluation of cytotoxic T cell responses to candidate HIV-1 vaccines in HIV-1-uninfected individuals. AIDS Res Hum Retroviruses. 1994;10 Suppl 2:S69-72.
- Kent SJ, Greenberg PD, Hoffman MC, Akridge RE, McElrath MJ. Antagonism of vaccine-induced HIV-1-specific CD4+ T cells by primary HIV-1 infection: potential mechanism of vaccine failure. J Immunol. 1997 Jan 15;158(2):807-15.
- Mosier DE, Gulizia RJ, MacIsaac PD, Corey L, Greenberg PD. Resistance to human immunodeficiency virus 1 infection of SCID mice reconstituted with peripheral blood leukocytes from donors vaccinated with vaccinia gp160 and recombinant gp160. Proc Natl Acad Sci U S A. 1993 Mar 15;90(6):2443-7. doi: 10.1073/pnas.90.6.2443.
- McElrath J, Peterson E, Dragavon J, Berger D, Hoffman M, Klucking S, Greenberg P, Corey L. Combination prime-boost approach to HIV vaccination in seronegative individuals: enhanced immunity with additional subunit gp160 protein boosting. Int Conf AIDS. 1992 Jul 19-24;8(1):Mo9 (abstract no MoB 0027)
- McElrath MJ, Rabin M, Hoffman M, Klucking S, Garcia JV, Greenberg PD. Evaluation of human immunodeficiency virus type 1 (HIV-1)-specific cytotoxic T-lymphocyte responses utilizing B-lymphoblastoid cell lines transduced with the CD4 gene and infected with HIV-1. J Virol. 1994 Aug;68(8):5074-83. doi: 10.1128/JVI.68.8.5074-5083.1994.
- McElrath MJ, Corey L, Greenberg PD, Matthews TJ, Montefiori DC, Rowen L, Hood L, Mullins JI. Human immunodeficiency virus type 1 infection despite prior immunization with a recombinant envelope vaccine regimen. Proc Natl Acad Sci U S A. 1996 Apr 30;93(9):3972-7. doi: 10.1073/pnas.93.9.3972.
- Cooney EL, McElrath MJ, Corey L, Hu SL, Collier AC, Arditti D, Hoffman M, Coombs RW, Smith GE, Greenberg PD. Enhanced immunity to human immunodeficiency virus (HIV) envelope elicited by a combined vaccine regimen consisting of priming with a vaccinia recombinant expressing HIV envelope and boosting with gp160 protein. Proc Natl Acad Sci U S A. 1993 Mar 1;90(5):1882-6. doi: 10.1073/pnas.90.5.1882.
Study record dates
Study Major Dates
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- AVEG 002B
- 10539 (DAIDS ES Registry Number)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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