Pharmacokinetics of Lopinavir/Ritonavir at Three Different Doses. — ENCORE3  

Acquired Immunodeficiency Syndrome Clinical Trial

Official title: Pharmacokinetics of Plasma Lopinavir/Ritonavir Over a 12 Hour Dosing Interval Following Administration of 400/100, 200/150, and 200/50 mg Twice Daily to HIV-negative Healthy Volunteers

Status Completed

Clinical Trial Summary

The purpose of this study is to assess the pharmacokinetics of plasma lopinavir/ritonavir over a 12-hour dosing interval, following administration to male and female HIV−negative healthy volunteers of:

1. Lopinavir/ritonavir 400/100 mg twice daily

2. Lopinavir/ritonavir 200/150 mg twice daily

3. Lopinavir/ritonavir 200/50 mg twice daily

Clinical Trial Description

Data during the development of lopinavir/ritonavir showed that lower drug doses had similar efficacy to the standard dose of 400/100mg twice daily. Lower drug doses are also associated with limited toxicity and cost.

The purpose of this study is to assess the pharmacokinetics of plasma lopinavir/ritonavir following administration to male and female HIV−negative volunteers of 400/100mg, 200/150mg and 200/50mg lopinavir/ritonavir twice daily. Each dosing phase will last for 7 days and each phase will be separated by a 7-day wash-out period. Pharmacokinetic evaluations will be made over a 12-hour interval at the end of each dosing phase.

Healthy subjects as determined by their medical history and physical examinations will be eligible to participate in the study. HIV−positive subjects will not be recruited as there is a risk that HIV−resistant mutations will be selected by an experimentally reduced dose of lopinavir/ritonavir. There is no reason to presume that there is any meaningful difference in the metabolic processing of lopinavir/ritonavir between HIV−infected and HIV−uninfected people. ;

Study Design

Allocation: Non-Randomized, Endpoint Classification: Pharmacokinetics Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Acquired Immunodeficiency Syndrome
• HIV Infections
• Immunologic Deficiency Syndromes

• NCT number: NCT00985543
• Study type: Interventional
• Source: Kirby Institute
• Status: Completed
• Phase: Phase 1
• Start date: October 2009
• Completion date: January 2010