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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.
Virologic failure occurs in a large proportion of individuals receiving treatment with combination antiretroviral therapy. Studies suggest that treatment interruption prior to initiation of a multiple-drug rescue regimen may improve virologic response in individuals who have failed several prior antiretroviral regimens. Other studies suggest there is a virologic benefit derived from using genotypic or phenotypic resistance testing in selecting salvage therapy regimens for patients failing antiretroviral therapy. This study tests the hypothesis that salvage regimens selected on the basis of HIV-1 resistance genotype, phenotype [AS PER AMENDMENT 02/19/02: virtual phenotype], and treatment history will be more effective if there is a period of treatment interruption before initiating that regimen.
Patients continue their antiretroviral therapy until randomization. Based on the results of the pre-entry genotype and phenotype [AS PER AMENDMENT 02/19/02: virtual phenotype] tests and treatment history, an individualized salvage therapy regimen (not provided by the study) is selected by the site investigator(s). Additionally, patients start or continue maintenance therapy (not provided by the study) for opportunistic infections (OIs). Patients are randomized to 1 of 2 treatment arms. In Arm A, patients have antiretroviral treatment interruption for a period of 16 weeks (Step 1), followed by initiation of the [AS PER AMENDMENT 02/19/02: best available] salvage therapy regimen (Step 2). [AS PER AMENDMENT 02/19/02: Patients in Arm A will be placed immediately on their individualized salvage regimen before the end of the 16-week period of treatment interruption if their CD4 count falls below a defined threshold, or if they develop a new OI]. In Arm B, patients switch immediately to the salvage therapy regimen. [AS PER AMENDMENT 02/15/01: Patients who become pregnant during Step 1 of Arm A must be advised to begin their selected, individualized salvage therapy regimen or a modified salvage regimen. Patients who become pregnant during Step 2 of Arm A or Arm B have therapy evaluated and undergo any changes required by their pregnancy.] Patients in both arms are monitored for plasma HIV-1 RNA levels, CD4+ and CD8+ cell counts, and HIV drug resistance genotypes and phenotypes for a duration of 64 weeks from randomization. Patients in Arm A are also monitored for immune reactivation by measurement of T-cell subsets and plasma cytokines during treatment interruption. Patients may participate in a virology substudy (A5100s) and an immunology substudy (A5104s). [AS PER AMENDMENT 02/19/02: Patients who volunteer to participate in the substudies must be registered to the main study at the same time they are registered to a substudy.]
Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
Antiretroviral Treatment Interruption
Univ of Alabama at Birmingham
National Institute of Allergy and Infectious Diseases (NIAID)
Published on BioPortfolio: 2014-08-27T03:57:08-0400
This is a two-center study of 30 HIV-infected participants who have been on antiretroviral therapy (ART) for at least two years. Participants will be asked to undergo LN and GALT biopsies...
This is a Phase 2, two-step, open-label study of the outcome of analytic treatment interruption (ATI) on patients who started antiretroviral therapy (ART) during Fiebig Stage I of acute HI...
The purpose of this study is to determine if stopping anti-HIV drugs for a period of time is safe and effective for enhancing the immune function of patients with HIV.
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This exploratory study is designed to ensure the safety of HIV-infected volunteers who complete research protocols that include an analytic treatment interruption (ATI). This is a prospect...
This study aimed to determine the timing and level of HIV rebound in blood and seminal plasma and to characterize the HIV rebounding populations after antiretroviral treatment interruption (ATI) in HI...
There are few data on the frequency of virological remission in African individuals after treatment with antiretroviral therapy (ART) in primary HIV infection (PHI).
The impact of short-term analytical treatment interruptions (ATI) on the levels of cellular HIV and of residual activation after subsequent antiretroviral therapy (ART)-mediated plasma HIV viral load ...
The impact of short-term analytical antiretroviral therapy (ART) interruptions on the levels of cellular HIV and of residual activation after subsequent ART-mediated plasma HIV viral load re-suppressi...
Despite increased antiretroviral therapy (ART) coverage and the raised CD4 threshold for starting ART, opportunistic infections (OIs) are still one of the leading causes of death in sub-Saharan Africa...
A treatment method in which patients are under direct observation when they take their medication or receive their treatment. This method is designed to reduce the risk of treatment interruption and to ensure patient compliance.
Drug regimens, for patients with HIV INFECTIONS, that aggressively suppress HIV replication. The regimens usually involve administration of three or more different drugs including a protease inhibitor.
Treatment of chronic, severe and intractable psychiatric disorders by surgical removal or interruption of certain areas or pathways in the brain, especially in the prefrontal lobes.
Inflammation of brain parenchymal tissue as a result of viral infection. Encephalitis may occur as primary or secondary manifestation of TOGAVIRIDAE INFECTIONS; HERPESVIRIDAE INFECTIONS; ADENOVIRIDAE INFECTIONS; FLAVIVIRIDAE INFECTIONS; BUNYAVIRIDAE INFECTIONS; PICORNAVIRIDAE INFECTIONS; PARAMYXOVIRIDAE INFECTIONS; ORTHOMYXOVIRIDAE INFECTIONS; RETROVIRIDAE INFECTIONS; and ARENAVIRIDAE INFECTIONS.
Viral infections of the leptomeninges and subarachnoid space. TOGAVIRIDAE INFECTIONS; FLAVIVIRIDAE INFECTIONS; RUBELLA; BUNYAVIRIDAE INFECTIONS; ORBIVIRUS infections; PICORNAVIRIDAE INFECTIONS; ORTHOMYXOVIRIDAE INFECTIONS; RHABDOVIRIDAE INFECTIONS; ARENAVIRIDAE INFECTIONS; HERPESVIRIDAE INFECTIONS; ADENOVIRIDAE INFECTIONS; JC VIRUS infections; and RETROVIRIDAE INFECTIONS may cause this form of meningitis. Clinical manifestations include fever, headache, neck pain, vomiting, PHOTOPHOBIA, and signs of meningeal irritation. (From Joynt, Clinical Neurology, 1996, Ch26, pp1-3)
AIDS and HIV
AIDS; Acquired Immune Deficiency Syndrome. HIV; Human Immunodeficiency Virus HIV infection causes AIDS. HIV infection also causes the production of anti-HIV antibodies, which forms the test for HIV in patients. People who have the HIV antibodies are ...