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 compare the efficacy of lamivudine (3TC) and zidovudine (AZT) in combination versus the better of didanosine (ddI) monotherapy or ddI/AZT combination, in symptomatic HIV-1 infected children who received less than 56 days of prior antiretroviral therapy. To evaluate the safety and tolerance of 3TC/AZT in this patient population. To determine other measures of diseases in response to the study regimens. Currently, none of the potential treatments for HIV-1 infection has proven to be both nontoxic and effective in long-term use. However, previous studies in both adults and children have shown that 3TC combined with AZT reduced HIV load in blood and increased white blood cells. Additionally, 3TC has demonstrated a favorable safety profile.
To determine drug efficacy and safety in HIV-infected patients treated with zidovudine ( AZT ) versus stavudine ( d4T ) versus both drugs. Also, to compare short- and long-term changes in magnitude of HIV RNA over time. Asymptomatic patients with CD4 counts over 300 cells/mm3 are more likely to tolerate any of the nucleoside analogs. d4T, with a favorable toxicity profile and demonstrated anti-HIV activity in previous studies, provides an additional therapeutic option.
To determine the influence of virus load, CD4 count, biologic phenotype, and presence of symptomatic disease on the response of HIV-infected patients to a new therapeutic regimen. PER AMENDMENT 8/27/96: To extend the availability of currently assigned ACTG 303 treatment for 6 months.
To determine the safety of stem cell harvesting after administration of filgrastim ( G-CSF ) to mobilize bone marrow stem cells into the peripheral blood in patients at various stages of HIV-1 infection as well as in HIV-negative volunteers. To determine the surface phenotypic and functional characteristics as well as the viral load in the stem cells obtained following this procedure.
To evaluate, in HIV-negative volunteers, the safety and immunogenicity of ALVAC-HIV MN120TMGNP (vCP300) followed by or combined with boosting using rgp120/HIV-1SF2. To compare ALVAC-HIV vCP300 with ALVAC-RG rabies glycoprotein (vCP65) as a control. To evaluate an accelerated immunization schedule at 0, 1, 3, and 6 months versus 0, 1, 6, and 9 months. The combination of a live recombinant primer followed by a subunit boost has the potential to induce not only cytotoxic T lymphocytes but also neutralizing antibody.
The purpose of this study is to see if it is safe and effective to give isotretinoin to HIV-infected women with cervical tumors to prevent these tumors from becoming cancerous. Cervical tumors are found in both HIV-infected and HIV-negative women. However, HIV-infected women are at a greater risk, and often their tumors become cancerous more quickly than those in HIV-negative women. Isotretinoin may be able to prevent this from happening. However, since these tumors tend to disappear over time, many doctors are hesitant to give their patients isotretinoin since this drug causes birth defects. This study looks at whether it is better to treat cervical tumors in HIV-infected women or to wait and see if they will disappear by themselves.
To determine the safety and tolerability of hydroxyurea at two doses alone and in combination with didanosine (ddI). To compare the short term antiviral effect of ddI monotherapy versus hydroxyurea plus ddI, as measured by plasma RNA levels at 8 weeks of therapy. [AS PER AMENDMENT 10/1/97: Accrual to arms involving hydroxyurea alone has been closed.] Current antiviral therapies for HIV-1 are limited by a few choices, and the lack of sustained clinical benefit from the drugs. The mechanisms that account for the lack of prolonged inhibition of viral replication by these agents are not fully understood. The activity of RT inhibitors might be potentiated by inhibiting host cellular enzymes essential for efficient HIV reverse transcription. Based on this information, comparisons of the antiviral effects of ddI monotherapy and hydroxyurea plus ddI, with the cellular enzyme ribonucleotide reductase as a potential target, should be done.
To determine whether administration of a highly active antiretroviral treatment regimen consisting of ritonavir (ABT-538), zidovudine (AZT), and lamivudine (3TC) is associated with the restoration of delayed type hypersensitivity and lymphocyte proliferative responses in patients with moderately advanced HIV-1 infection. To better characterize in these patients the phenotype of the expanded lymphocyte subpopulations, as well as the genotype, phenotype, and cellular origin of viruses that persist after initiation of therapy, and the genotype and phenotype of drug-resistant isolates that emerge during therapy. Although plasma viral load drops dramatically after initiation of powerful antiretrovirals, it does not drop to zero. It appears that a new steady state is reached, suggesting that a reservoir may exist of virus-producing cells, possibly cells of monocyte/macrophage lineage, that continue to produce a low level of virus despite antiretroviral treatment.
To evaluate the safety and immunogenicity of an accelerated schedule of recombinant canarypox vaccine ALVAC-HIV MN120TMG (vCP205) versus control followed by boost with rgp120/HIV-1 SF2 vaccine in HIV-negative volunteers. Frequent injections of ALVAC-HIV vCP205 may result in more rapid induction of cytotoxic T-lymphocytes. This trial will evaluate whether an accelerated vaccination schedule can produce immunological responses comparable to those obtained in other trials of ALVAC-HIV vCP205.
The purpose of this study is to find out if it is safe for HIV-positive children who are responding well to their anti-HIV treatment to stop taking medications that prevent AIDS-related infections (opportunistic infections) such as pneumonia and other bacterial infections. This is an observational study, meaning children will only be monitored to see if they develop any infections. Children have been receiving medications to prevent complications of HIV infection, such as Pneumocystis carinii pneumonia (PCP), Mycobacterium avium complex (MAC) disease, or other bacterial infections. It is common for HIV-positive patients with low CD4 counts to receive these preventive medications. However, these drugs can have serious side effects, they are expensive, and it is possible for bacteria resistant to the drugs to grow. For these reasons, it may be beneficial to the child to stop taking these preventive medications if he/she has been on anti-HIV (antiretroviral) therapy and has improved CD4 counts. This study will look at how many children who stop taking their medications develop opportunistic infections.