A Phase I, Open-label Trial to Explore the Pharmacokinetics, Safety and Tolerability of TMC278 (Rilpivirine) 25 mg Once Daily Following a 2-week Period Receiving Efavirenz, in Healthy Male and Female Volunteers

HIV Clinical Trial

Official title: A Phase I, Open-label Trial to Explore the Pharmacokinetics, Safety and Tolerability of TMC278 25 mg Once Daily Following a 2-week Period Receiving Efavirenz, in Healthy Male and Female Subjects

Status Completed

Clinical Trial Summary

The purpose of this study is to investigate the pharmacokinetics of TMC278 (rilpivirine) 25 mg once daily following a preceding 2-week treatment period with efavirenz 600 mg once daily in healthy volunteers

Clinical Trial Description

This is a Phase I, open-label (all people involved know the identity of the intervention), single center trial in healthy HIV negative volunteers to investigate the pharmacokinetics (how drugs are absorbed in the body, how they are distributed within the body, the rate at which a drug action begins, the duration of the effect, the chemical changes of the substance in the body, and the effects and routes of excretion of the metabolites) of the drug of rilpivirine (TMC278) 25 mg once daily (q.d.). An approximate total of 20 volunteers will be enrolled in this trial. All volunteers will receive 3 different treatments; o Treatment A: TMC278 25 mg q.d. administered for 14 days.; o Treatment B: efavirenz (EFV) 600 mg q.d. administered for 14 days.; o Treatment C: TMC278 25 mg q.d. administered for 28 days (4 weeks).; All volunteers will start with Treatment A followed by Treatment B. Treatments A and B will be separated by a washout period of at least 14 days but no more than 21 days. At the end of Treatment B, volunteers will continue with Treatment C. There will be no washout period between Treatments B and C.; Full pharmacokinetic profiles of TMC278 will be determined up to 24 hours postdose on Days 1 and 14 of Treatment A (references), Day 1 (immediately after cessation of EFV intake) of Treatment C (test), and on Days 14, 21, and 28 (2, 3, and 4 weeks after cessation of EFV intake, respectively) of Treatment C. Trough (C0h) samples for determination of TMC278 plasma; concentrations will be collected regularly in between. Blood samples for determination of EFV plasma concentrations will be collected at regular time points during Treatment B and during Treatment C after cessation of EFV intake.; Serum samples for potential future testing of ex vivo antiviral activity will be collected and stored.; A pharmacogenomic blood sample for potential future CYP2B6 genotyping will be collected and stored from subjects who consent separately to the pharmacogenomic component of the trial.; Safety and tolerability will be evaluated throughout the trial. Rilpivirine (TMC278) 25mg once daily for 14 days, No Treatment 14-21 days, Efavirenz 600mg once daily for 14 days, TMC278 25mg once daily for 28 days ;

Study Design

Endpoint Classification: Pharmacokinetics Study, Intervention Model: Single Group Assignment, Masking: Open Label

Related Conditions & MeSH terms

• HIV

• NCT number: NCT01268839
• Study type: Interventional
• Source: Tibotec, Inc
• Status: Completed
• Phase: Phase 1
• Start date: January 2010
• Completion date: May 2010