Active clinical trials for "HIV Infections"

To evaluate in healthy volunteers the safety and immune response to 200 mcg gp120 candidate vaccine in MF59 emulsion without MTP-PE at 0, 1 and 6 months. Preliminary evaluations of two dose levels of gp120 administered to volunteers in protocol VEU 007A indicate that a gp120 dose of potentially greater immunogenicity may be of interest.

To examine the response of HIV-1 infected patients to vaccination with gp120/HIV-1MN antigen. To determine the effect of antiretroviral therapy on vaccine responsiveness. Fifty percent of HIV-1 infected individuals remain symptom free for 8-12 years. It has been hypothesized that HIV-specific immune responses are responsible for the period of relative quiescence of viral replication. Recent studies suggest that these immune functions can be augmented by vaccination with HIV-derived antigens.

To determine the safety, immunogenicity, and optimal dose of rgp120/HIV-1MN octameric V3 peptide vaccine (SynVac) in healthy volunteers. It is likely that the ultimate control of AIDS will depend on the development of safe and effective vaccines against HIV-1. SynVac is a synthetic candidate vaccine based on eight V3-derived peptides attached to a heptalysyl core to form radial octamers. In animal studies, the vaccine appears safe and demonstrates the capability for producing immune responses.

To evaluate, in healthy adult volunteers, the safety and immunogenicity of multivalent HIV-1 peptide immunogen, a formulation of HIV-1 gp120 principal neutralizing domain (PND) branched synthetic peptides from 15 viral strains representative of diverse worldwide isolates. Because there is considerable variation among HIV-1 virus strains from differing geographical locations worldwide, a multivalent peptide vaccine has been constructed to include prevalent and divergent isolates, potentially providing for wide coverage of geographically isolated epidemics.

Part A: To evaluate the safety and immunogenicity of ALVAC vCP125 HIV-1 gp160 MN live canarypox recombinant vaccine (ALVAC gp160 MN) versus a recombinant canarypox expressing the rabies glycoprotein (ALVAC rabies glycoprotein) as a control in healthy, HIV-1 uninfected adult volunteers. Part B: To evaluate the schedule of two immunizations with ALVAC gp160 MN for optimal immunogenicity. Amendment: 12/22/93: To determine whether ALVAC gp160 MN in combination with SF-2 rgp120 subunit protein is capable of generating humoral and cellular immune responses of greater intensity and longer duration than either vaccine administered alone. A canarypox-vectored vaccine (ALVAC) that expresses the gp160 antigen of the HIV-1 MN strain might satisfy many criteria for an affordable HIV vaccine. Per 12/22/93 amendment: Cellular responses have been augmented by the combination of two recombinant vaccines, especially in vaccinia naive individuals.

The purpose of this study is to test how the body's immune system responds to the vaccine ALVAC-HIV vCP1452 and to determine if the vaccine is safe when given alone and with MN rgp120. HIV infection and AIDS have no cure, in spite of recent advances in anti-HIV drugs. Many worldwide populations cannot afford the antiviral treatments for infected people. HIV vaccines offer hope for disease prevention. In this trial, 2 experimental HIV vaccines called ALVAC vCP1452 and MN rgp120 will be given to volunteers in Haiti, Brazil, Peru, and Trinidad and Tobago. The study will determine how volunteers' immune systems respond to the vaccines. (This protocol has been changed by adding new international sites.)

The purpose of this study is to test another way to control the amount of HIV in the blood (viral load). Studies show that stopping all anti-HIV drugs for a time before switching to new anti-HIV drugs may improve the response in some individuals who are failing treatment. Other studies suggest a benefit if drug-resistance tests are used in selecting a new anti-HIV drug treatment. This study tests the effect of stopping anti-HIV drugs for a time before switching to anti-HIV drugs selected using drug-resistance test results.

The purpose of this study is to determine if the vaccine, AIDSVAX B/E, will protect intravenous drug users from becoming infected with HIV.

The purpose of this study is to evaluate the safety, tolerability, and immunogenicity of env (A,B,C,A/E)/gag (C) DNA and gp120 (A,B,C,A/E) protein/GLA-SE HIV-1 vaccines (PDPHV-201401) as a prime-boost regimen or co-administered in repeated doses, in healthy, HIV-1-uninfected adults.

Background: Love, Sex, and Choices (LSC) is a soap opera video series created to reduce HIV sex risk in women. Methods: LSC was compared to text messages in a randomized trial in 238 high-risk mostly Black young urban women. 117 received 12-weekly LSC videos, 121 received 12-weekly HIV prevention messages on smartphones. Changes in unprotected sex with high risk partners were compared by mixed models.