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Safety of and Immune Response to Two Different HIV Vaccines, Each Followed by a Adenoviral Vaccine Boost, in HIV Uninfected Adults

HIV Infections Clinical Trial

Official title:
A Phase I Clinical Trial to Evaluate Immune Response Kinetics and Safety of Two Different Primes, Adenoviral Vector Vaccine (VRC-HIVADV014-00-VP) and DNA Vaccine (VRC-HIVDNA009-00-VP), Each Followed by Adenoviral Vector Boost in Healthy, HIV-1 Uninfected Adults

Clinical Trial Summary

The purpose of this study is to determine the safety of and immune response to an adenoviral vector HIV vaccine or a DNA HIV vaccine, each followed by an adenoviral vector HIV vaccine boost, in HIV uninfected adults.

Clinical Trial Description

Evaluating the immunogenicity of HIV vaccines is critical to improving vaccine design and development. The adenoviral vector HIV vaccine VRC-HIVADV014-00-VP has shown immunogenicity in early studies and appeared safe and well tolerated at three different doses in a prior dose-escalation vaccine trial in HIV uninfected adults. The DNA HIV vaccine VRC-HIVDNA009-00-VP has shown immunogenicity in multiple clinical trials; in one trial, the DNA vaccine demonstrated a nearly 100% CD4 T-cell response rate. The DNA plasmids in both vaccines code for proteins from HIV subtypes A, B, and C, which together represent 90% of new HIV infections. This study will determine the safety and immune response to the administration of an adenoviral vector HIV vaccine or a DNA HIV vaccine, each followed by an adenoviral vaccine boost, in HIV uninfected adults. This study will last 1 year. Participants will be randomly assigned to one of two groups. Within each group, participants will be randomly assigned to receive either vaccine or control injections. Group 1 participants will receive either placebo or the adenoviral HIV vaccine at study entry and Month 6. Group 2 participants will receive either placebo or the DNA HIV vaccine at study entry and Month 1 and the adenoviral HIV vaccine at Month 6. Participants will be asked to record their temperatures and other side effects in a symptom log on the day of each vaccination and for 3 days thereafter to report any side effects. Group 1 participants will have 16 study visits, and a physical exam and HIV and pregnancy prevention counseling will occur at each visit. Participants will also be asked about any side effects and medications they are taking. Blood collection will occur at most visits. Urine collection will occur at selected visits. Participants will be asked to complete a social impact assessment at Months 2, 6, and 12 and a testing and belief questionnaire at Months 6 and 12. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00270218
Study type Interventional
Source National Institute of Allergy and Infectious Diseases (NIAID)
Contact
Status Completed
Phase Phase 1
Start date February 2006
Completion date August 2007
View Details
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