Drug Interaction Study Between Rifabutin And Lersivirine (UK-453,061)

September 17, 2010 updated by: Pfizer

Open-Label, Randomized, 3-Way Crossover Study To Estimate The Interaction Between Multiple Dose Rifabutin And Lersivirine (UK-453,061) In Healthy Subjects

Approximately 1/3 of persons living with HIV infection are co-infected with tuberculosis (TB). Rifabutin, used in the treatment of TB, is an inducer of drug metabolism thus may decrease concentrations of lersivirine if co-administered. Lersivirine is a modest inducer of drug metabolism, thus lersivirine may decrease concentrations of rifabutin as well.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

18

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Singapore
      • Singapore, Singapore, 188770
        • Pfizer Investigational Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years to 51 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy male and/or female subjects between the ages of 18 and 55 years, inclusive.
  • Body Mass Index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight >50 kg (110 lbs).

Exclusion Criteria:

  • Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease.
  • History of regular alcohol consumption exceeding 7 drinks/week for women and 14 drinks/week for men (1 drink = 150 mL of wine or 360 mL of beer or 45 mL of hard liquor).
  • Use of tobacco- or nicotine-containing products in excess of the equivalent of 5 cigarettes per day.
  • Hypersensitivity/allergic reactions to any component of the study drugs.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Treatment A
Lersivirine
Drug: Lersivirine
1000 mg once daily for 10 days
Active Comparator: Treatment B
Rifabutin
Drug: Rifabutin
300 mg once daily for 10 days
Experimental: Treatment C
Lersivirine and Rifabutin
Drug: Lersivirine
1000 mg once daily for 10 days
Drug: Rifabutin
300 mg once daily for 10 days

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Lersivirine plasma pharmacokinetic parameters: AUC24, Cmax, Tmax, and C24h
Time Frame: 20 days
20 days
Rifabutin and 25-O-desacetyl-rifabutin plasma pharmacokinetic parameters: AUC24, Cmax, Tmax, and C24h
Time Frame: 20 days
20 days

Secondary Outcome Measures

Outcome Measure
Time Frame
Safety and toleration assessed by spontaneous reporting of adverse events, vital signs, 12 lead ECG and laboratory safety assessments
Time Frame: 58 days
58 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2010

Primary Completion (Actual)

August 1, 2010

Study Completion (Actual)

August 1, 2010

Study Registration Dates

First Submitted

June 19, 2009

First Submitted That Met QC Criteria

June 19, 2009

First Posted (Estimate)

June 22, 2009

Study Record Updates

Last Update Posted (Estimate)

September 21, 2010

Last Update Submitted That Met QC Criteria

September 17, 2010

Last Verified

September 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • A5271043

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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