- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00006298
Studies of HIV-1 Infection in Newly Infected Individuals in Southern Africa
Virological and Immunological Studies of HIV-1 Infection in Newly Infected Individuals in Southern Africa
The main goal of this study is to find out how the immune system responds to a specific type of HIV infection, known as C HIV-1, in order to develop a vaccine against this type of infection. The study involves Southern African populations.
The HIV-1 virus changes rapidly and many different subtypes have been found. In South Africa, limited data have suggested Subtype C HIV-1 is the most common. This study strives to verify the most common subtype and also look at genetic differences and immune responses among newly infected individuals. Results will aid in the development of vaccines specific for certain geographical areas.
Study Overview
Status
Conditions
Detailed Description
HIV-1 evolves rapidly and multiple genetic subtypes have been isolated from a number of geographic locations. There are limited data on the distribution of subtypes in the Southern African HIVNET sites. Data suggest subtype C HIV-1 predominates and this study is designed to substantiate and extend these observations to understand the biological relationship between HIV-1 subtypes, genetic variability, and immune responses. Earlier studies were conducted using individuals who had been seropositive for 3 to 9 years with advanced disease status; this study will test reactivity during the early stage of infection. This will assist in the rational selection of prototypic isolates for inclusion in either a single universal vaccine or vaccines tailored for specific subtypes/geographical regions.
Volunteers are recruited from Malawi, South Africa, Zambia, and Zimbabwe. The earliest possible cases of seroconversion are included. At enrollment, participants are counseled appropriately for their HIV status and demographic information is obtained. Participants are followed quarterly up to 12 months. Epidemiological, clinical, and laboratory data are collected during physical exams and blood draws at each visit. Blood samples are used to assess CD4 counts, plasma viral load, genetic parameters, and individual immune responses. Participants who are seronegative or whose status is unknown are tested for HIV at each visit, with post-test counseling when participants return to the clinic for test results.
In addition to enrolling the HIV-infected and uninfected volunteers, each site contributes a 5-ml blood sample from 50 seronegative individuals for DNA extraction and HLA genotyping.
Study Type
Enrollment
Contacts and Locations
Study Locations
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North Carolina
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Research Triangle Park, North Carolina, United States, 27709
- Missie Allen
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria
Participants may be eligible for this study if they:
- Are first HIV-negative and later test HIV-positive; or are HIV-positive and have evidence of being HIV-negative within the 8 months prior to first testing HIV-positive; or are HIV-positive with one test and HIV-negative with another test.
Exclusion Criteria
Participants will not be eligible for this study if they:
- Have a mental disorder that interferes with agreeing to do the study or with participating in the study.
- Are receiving anti-HIV treatment for more than 4 weeks.
- Have tuberculosis.
Study Plan
How is the study designed?
Collaborators and Investigators
Investigators
- Study Chair: Haynes Sheppard
- Study Chair: Desmond Martin
- Study Chair: Clive Gray
Publications and helpful links
General Publications
- Masemola A, Mashishi T, Khoury G, Mohube P, Mokgotho P, Vardas E, Colvin M, Zijenah L, Katzenstein D, Musonda R, Allen S, Kumwenda N, Taha T, Gray G, McIntyre J, Karim SA, Sheppard HW, Gray CM; HIVNET 028 Study Team. Hierarchical targeting of subtype C human immunodeficiency virus type 1 proteins by CD8+ T cells: correlation with viral load. J Virol. 2004 Apr;78(7):3233-43. doi: 10.1128/jvi.78.7.3233-3243.2004.
- Masemola AM, Mashishi TN, Khoury G, Bredell H, Paximadis M, Mathebula T, Barkhan D, Puren A, Vardas E, Colvin M, Zijenah L, Katzenstein D, Musonda R, Allen S, Kumwenda N, Taha T, Gray G, McIntyre J, Karim SA, Sheppard HW, Gray CM; HIVNET 028 Study Team. Novel and promiscuous CTL epitopes in conserved regions of Gag targeted by individuals with early subtype C HIV type 1 infection from southern Africa. J Immunol. 2004 Oct 1;173(7):4607-17. doi: 10.4049/jimmunol.173.7.4607.
Study record dates
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
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
- HIVNET 028
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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