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在研机构- |
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在研适应症- |
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最高研发阶段无进展 |
首次获批国家/地区- |
首次获批日期1800-01-20 |
A Phase I Safety and Immunogenicity Trial of a Combination Vaccine (NefTat and gp120w61d) Formulated With AS02A (GlaxoSmithKline Biologicals) Given Intramuscularly in HIV-1 Uninfected Adult Participants
The purpose of this study is to see if the investigational vaccines NefTat and gp120w61d are safe and tolerable in humans and to see how the immune system responds to the vaccines.
There have been advances in the treatment and prevention of HIV, but the spread of HIV/AIDS is getting worse. HIV/AIDS is the main infectious cause of death in the world. A vaccine to prevent HIV disease is the best way to try to deal with this situation. Several vaccine products have been tested, but only 2 are still in trial. There is a need for a new product.
A Phase I, Randomized, Double-Blind Clinical Trial of the HIV gp120/NefTat/AS02A Vaccine Candidate in Subjects With Well-Controlled Chronic HIV-1 Infection on Highly Active Antiretroviral Therapy (HAART)
This study will test the safety and immunogenicity of the gp120/NefTat/AS02A vaccine candidate in individuals with chronic HIV-1 infection successfully treated with HAART. The rationale for this study is based on previous scientific experiments, including data indicating that this vaccine can elicit strong HIV-1-specific T cell immune responses in humans and monkeys and lead to a retardation of HIV-1 disease progression in animal models of HIV-1 infection.
The HIV vaccine to be administered during this study consists of three recombinant HIV clade B viral antigens: the envelope glycoprotein gp120 and two regulatory proteins, Nef and Tat.The antigens are formulated in a proprietary adjuvant, AS02A, comprised of two immunostimulants in an oil-in-water emulsion (gp120/NefTat/AS02A). The vaccine and the adjuvant are manufactured and provided for the study by GlaxoSmithKline Biologicals, Rixensart, Belgium. The drugs will be given by intramuscular (IM) injection at a standard dose of 20 mg together with 0.5 ml of the AS02A adjuvant.
Twenty HIV-1 infected individuals will be randomly enrolled into three different study groups, receiving either the gp120/NefTat/AS02A vaccine (10 individuals), the AS02A adjuvant alone (5 individuals) or a placebo (5 individuals). After obtaining informed consent, subjects will have a history and physical exam performed and have laboratory tests to confirm they meet all inclusion and exclusion entry criteria. Women of childbearing potential will have a pregnancy test prior to each injection of the investigational product. Injections with vaccine, adjuvant alone, or placebo will then be performed at weeks 0, 4, and 12. Study participants will undergo close monitoring after each vaccination. Blood samples will be obtained for immunological assays at study baseline (2 times) and weeks 2, 4, 6, 12, 14, 24, and 48. All patients will maintain their antiretroviral treatment regimen during the entire study period.
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