Safety and Effectiveness of an Anti-HIV Drug Combination in HIV-Positive Patients Who Have Failed Previous Treatment With Protease Inhibitors

Study Overview
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Brief Summary
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The purpose of this study is to see if it is safe and effective to give an anti-HIV drug combination containing indinavir and ritonavir to HIV-positive patients who have failed previous treatment with protease inhibitors.

Detailed Description
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Patients receive indinavir and ritonavir twice daily plus 2 NRTIs (NRTIs are not provided by this study). Physical examinations and laboratory tests, including plasma viral RNA levels and CD4 cell counts, are performed at Day 1 and Weeks 4, 8, 12, 16, 20, and 24 (or at discontinuation). The incidence of serious and drug-related adverse experiences is tabulated to determine drug safety. The proportion of patients achieving plasma viral RNA levels below 50 copies/ml (by UltraSensitive assay) are estimated statistically to determine drug efficacy.

Official Title
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A Multicenter, Open-Label, 24-Week Study to Evaluate the Safety and Activity of Indinavir Sulfate 800 Mg b.i.d. in Combination With Ritonavir 200 Mg b.i.d. and Two NRTIs in HIV-1 Infected Patients Who Failed PI Therapy

Conditions
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HIV Infections

Intervention / Treatment
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* Drug: Indinavir sulfate
* Drug: Ritonavir


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria You may be eligible for this study if you: Are HIV-positive. Have a viral load (level of HIV in the blood) of 2500 copies/ml or greater within 45 days of study entry. Have a CD4 cell count of 100 cells/mm3 or greater within 45 days of study entry. Have been on an anti-HIV drug regimen containing a protease inhibitor for at least 16 weeks and initially did well on this treatment (your viral load decreased significantly) but later experienced treatment failure on this drug combination (your viral load increased significantly). Experienced treatment failure within 24 weeks of study entry. Are 18 years of age or older. Agree to use effective barrier methods of birth control (such as condoms) during the study. Exclusion Criteria You will not be eligible for this study if you: Are allergic to ritonavir or indinavir. Have hepatitis. Have an abnormal chest x-ray or abnormal liver function tests. Have taken 2 protease inhibitors at the same time for 7 or more days. Have taken non-nucleoside reverse transcriptase inhibitors (NNRTIs) in the 2 weeks before study entry. Have a medical condition that might make it unsafe for you to take the study drugs. Have experienced resistance to NRTIs and no new NRTI therapy is possible. Have taken certain medications. Abuse alcohol or drugs. Are pregnant or breast-feeding.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment


Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: Indinavir sulfate|nan|
|Drug: Ritonavir|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Drug Therapy, Combination, HIV Protease Inhibitors, Ritonavir, Indinavir, Reverse Transcriptase Inhibitors, Anti-HIV Agents, Viral Load