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Efficacy and Safety of Tenofovir DF/Atazanavir Enhanced With Low Dose of Ritonavir in HIV-Infected Patients

HIV Infections Clinical Trial

Official title:
Randomized Open Label Study Assessing the Antiviral Activity, Toxicity and Pharmacologic Interaction of Tenofovir DF/Atazanavir Enhanced With Low Dose of Ritonavir as Part of a Salvage Regimen in HIV Infected Patients With Multiple Treatment Failures (ANRS 107 Trial PUZZLE 2)

Clinical Trial Summary

This trial is aimed at studying the antiviral activity, toxicity and pharmacokinetic (PK) interactions of tenofovir DF and atazanavir enhanced with low dose of ritonavir given alone and then concomitantly as part of a salvage regimen to HIV patients with multiple failure, under conditions allowing to tease out the specific role of atazanavir combined with low dose of ritonavir.

Clinical Trial Description

When licensed, new drugs are widely used in patients failing antiretroviral therapy, including patients with multiple failures. In such patients, having multi-resistant virus, the introduction of one new drug only in the salvage regimen will infrequently result in undetectable virus load in the plasma. Tenofovir DF and atazanavir appear promising because of their pharmacokinetic profile, activity, safety and resistance properties. In addition, pharmacokinetic data in healthy volunteers suggest that atazanavir could be optimized by adding ritonavir at low dose. Thus, one may speculate that atazanavir pharmacokinetic and antiviral activity could be optimized by adding ritonavir at low dose in patients exhibiting high rate of protease inhibitor mutations.

This protocol is aimed at studying the antiviral activity, toxicity and PK interactions, of tenofovir DF and atazanavir enhanced with low dose of ritonavir given alone and then concomitantly as part of a salvage regimen to patients with multiple failure, under conditions allowing to tease out the specific role of atazanavir combined with low dose of ritonavir.

EKG abnormalities (increased PR and QTc intervals) were observed in normal volunteers treated with atazanavir, therefore EKG safety monitoring will be performed on all subjects during this study ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00122577
Study type Interventional
Source French National Agency for Research on AIDS and Viral Hepatitis
Contact
Status Terminated
Phase Phase 2
Start date March 2002
Completion date July 2004
View Details
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