There are more than 498,563 clinical trials published worldwide with over 60,000 trials that are currently either recruiting or not yet recruiting. Use our filters on this page to find more information on current clinical trials or past clinical trials (free or paid) for study purposes and read about their results.
To evaluate the safety and tolerance of concurrent administration of standard-dose didanosine (ddI) with low-dose ribavirin in HIV-positive patients. To determine the pharmacokinetic interactions of concurrent administration of ddI and ribavirin and correlate pharmacokinetic parameters with toxicity. To investigate antiviral activity of the combined regimen. Combination ddI/ribavirin therapy, if safe and effective, offers an alternative combination antiretroviral regimen for patients unable to tolerate regimens containing zidovudine (AZT).
To determine the safety, tolerance, and pharmacokinetics of a new improved microparticulate suspension formulation of atovaquone administered at one of two dose levels (per 09/30/94 amendment, a third dose level was added) daily for 12 days in HIV-infected and perinatally exposed (per 8/9/95 amendment) infants and children who are at risk of developing Pneumocystis carinii pneumonia (PCP). Atovaquone has shown prophylactic potential in adults in the treatment of PCP but is poorly absorbed in tablet form. To improve the bioavailability of atovaquone, a new formulation has been prepared as a microparticulate suspension. Since studies in adults have demonstrated substantial safety of this drug, evaluation in children is being pursued.
PRIMARY: To determine the safety of envelope recombinant proteins rgp120/HIV-1MN (Genentech) and rgp120/HIV-1SF2 (Chiron/Biocine) in infants who are of indeterminate HIV status born to HIV-infected women. To evaluate changes in viral load in infants proven to be infected and absolute CD4 counts in all immunized infants. SECONDARY: To evaluate the immunogenicity of these envelope recombinant proteins in infants of indeterminate HIV status born to HIV-infected women. Only 30-50 percent of HIV-infected infants have detectable virus at birth. Successful early sensitization to HIV envelope epitopes may help prevent infection or, alternatively, may enhance HIV-specific immune function to alter HIV replication and disease progression.
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 the effect of corticosteroids on reducing elevated intracranial pressure in cryptococcal meningitis. To evaluate the safety of corticosteroids in patients with cryptococcal meningitis and intracranial hypertension. In AIDS patients with cryptococcal meningitis, a correlation has been found between early death and elevated intracranial pressure. Since dexamethasone has been found to reduce intracranial pressure resulting from other forms of meningitis, it may be of benefit in AIDS patients with cryptococcal meningitis.
To evaluate the safety of gp160 vaccine (VaxSyn) in HIV-1 infected pregnant women with CD4 counts >= 400 cells/mm3. To evaluate the immunogenicity of this vaccine in pregnant women and the passive acquisition of vaccine-specific antibody in their infants. Evidence suggests that an advanced stage of disease with high plasma viremia is associated with increased transmission of HIV-1 to the fetus. Slowing the progression of disease, reducing the titer of virus in plasma, and increasing the titer of epitope-specific antibody are potentially attainable goals through active immunization of the mother during pregnancy.
To evaluate the methodology for rapidly determining the early bactericidal activity (EBA), tolerance, and pharmacokinetics of isoniazid and levofloxacin in the treatment of pulmonary tuberculosis (TB). Traditionally, in trials for treatment of TB, a new drug is administered in combination with two or more other antituberculous agents of known effectiveness over a long period of time. In this setting, it is difficult to determine the effect of any single drug or dose level. Development of new agents for the treatment of TB may be accelerated by a methodology in which a new agent could be evaluated for activity by administering it as a single agent over a short time period. This study utilizes a method to measure the amount of bacteria present each day in the lungs.
PRIMARY: To compare the immunogenicity and safety of each of several HIV-1 derived immunogens versus control in HIV-infected individuals with CD4 counts greater than or equal to 500 cells/mm3. SECONDARY: To determine whether significant advantages to any one vaccine exist. Before large clinical trials of anti-HIV vaccines are undertaken, it is important to determine whether there are significant advantages to any one of the vaccines currently offered for such studies.
PRIMARY: To identify, characterize, and co-enroll HIV-infected adolescents into existing and future ACTG (or other NIH-sponsored) HIV treatment protocols through the systematic and recurrent assessment of eligibility. To assess the ability of adolescents enrolled in ACTG 220 to adhere to ACTG (or other NIH-sponsored) HIV treatment protocols; and to define factors that influence the adolescent's ability to enter or adhere to study protocols. SECONDARY: To describe the nature, stage, and progression of HIV infection in adolescents. Little is known about HIV-infected adolescents as a group and, as a result, small numbers of them are currently enrolled in ACTG drug studies. Creative approaches are needed to encourage enrollment of HIV-infected adolescents whose socio-demographic profile has made access to NIH-sponsored research unlikely.
To determine the relative clinical efficacy of zidovudine ( AZT ) plus didanosine (ddI), AZT plus zalcitabine ( ddC ), AZT alternating monthly with ddI, and AZT/ddI plus nevirapine in HIV-infected patients with advanced disease. The rapid emergence of resistant HIV strains has been observed in patients receiving monotherapy with a nucleoside analog or non-nucleoside reverse transcriptase inhibitor. Use of combination therapy with two nucleoside drugs or convergent combination therapy with two nucleosides and a non-nucleoside RT inhibitor may minimize the evolution of these resistant HIV strains. Since toxicity is a major problem in patients with advanced disease who are receiving combination nucleoside therapy, alternating the two drugs may provide a way of retaining several benefits of combination therapy while minimizing the increased toxicity.