An interventional study of Lopinavir/Ritonavir and Abacavir sulfate in HIV Infections, sponsored by National Institute of Allergy and Infectious Diseases (NIAID). Completed at 23 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-11-01.
Sponsored by National Institute of Allergy and Infectious Diseases (NIAID) · Not applicable, Interventional, and Treatment
This study will compare an anti-HIV drug combination of protease inhibitor plus a nonnucleoside reverse transcriptase inhibitor (NNRTI) to one that includes three nucleoside reverse transcriptase inhibitors (NRTIs) plus an NNRTI. NNRTIs, NRTIs, and protease inhibitors are all types of anti-HIV drugs that block the virus in some way.
This study will try to find out if a treatment regimen containing a protease inhibitor plus an NNRTI has a different effect on the rise of CD4 cells compared to a treatment made up of three NRTIs plus an NNRTI. CD4 cells are cells of the immune system that fight infection. This study will also try to see if the combination of drugs used in this study is safe to use in HIV-positive patients.
This study is designed to further define the dynamics and the mechanisms of the CD4 cell rise seen following administration of potent antiretroviral therapy. It will ascertain if treatment regimens containing nucleoside reverse transcriptase inhibitors (NRTIs) with a nonnucleoside reverse transcriptase inhibitor (NNRTI) have different effects on CD4 dynamics than regimens composed of a protease inhibitor with an NNRTI.
Patients are randomized to one of the two treatment arms listed below. They are stratified based on CD4 count and whether they choose to participate in substudy A5036s.
Arm A (protease inhibitor plus NNRTI regimen): At Day 0 (entry), patients begin taking LPV/RTV. At Day 3, patients add NVP, once daily for 2 weeks and then twice daily for the remainder of the study.
Arm B (triple reverse transcriptase inhibitors plus NNRTI regimen): At Day 0 (entry), patients begin taking 3TC plus d4T plus ABC. At Day 3, patients add NVP, once daily for 2 weeks and then twice daily for the remainder of the study.
HIV RNA analysis is performed at Weeks 4 and 5. If the mean is at least 1.0 log10 lower than the baseline HIV RNA, the patient may continue on study treatment. If the mean is not at least 1.0 log10 lower, however, patients are discontinued from the study by no later than Week 8. After 8 weeks of treatment, patients may change antiretroviral medications with permission of the protocol chair or vice chairs. Regular clinical evaluations are conducted. Blood is drawn to determine HIV RNA quantification, absolute CD4 and CD8 counts, immunological evaluations, telomere assays, and part is stored for future testing. Skin testing and return visits for delayed-type hypersensitivity to standard recall antigens are done on three occasions. Patients remain on the study for 48 weeks. Substudy A5036s evaluates viral dynamics during study treatment. Serial plasma samples are collected during the first 24 hours of treatment and at Day 3 and Week 4. Plasma HIV measurements are performed to differentiate between infectious and non-infectious particle production.
4,258 studies on the registry are indexed under HIV Infections; 240 are open to participants now.
This study's enrollment of 55 is below the median of 83 across 3,250 interventional studies indexed under HIV Infections.
Browse HIV Infections studies →National Institute of Allergy and Infectious Diseases (NIAID) is the lead sponsor of 2,401 studies on the registry; 179 are open to participants now.
Of its 396 completed or terminated interventional studies of FDA-regulated products, 294 (74%) have results posted.
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Patients may be eligible for this study if they:
Exclusion Criteria
Patients will not be eligible for this study if they:
This study is completed, as verified in Oct 2021. You cannot join it, but the record below documents what was studied.
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National Institute of Allergy and Infectious Diseases (NIAID)