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Completed

NCT Number: NCT01018368

Study of VX-770 and Rifampin in Healthy Male Subjects

The objectives of this study are to evaluate the effects of multiple doses of rifampin on the single-dose pharmacokinetics of VX 770.

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Key information

Conditions

Cystic Fibrosis Congenital, Hereditary, and Neonatal Diseases and Abnormalities Digestive System Diseases Genetic Diseases, Inborn Infant, Newborn, Diseases Lung Diseases Pancreatic Diseases Respiratory Tract Diseases

Age range

18 year–55 year

Sex eligibility

Male

Study type

Interventional

Phase

Phase 1

Primary location

Daytona Beach, Florida, United States

About this study

This is a single-center, nonrandomized, open-label, 2-period, 1-sequence crossover study to investigate the safety, tolerability and pharmacokinetics of VX 770 when administered alone or with rifampin.

All enrolled subjects will receive the same treatments and undergo the same procedures. In Period 1, subjects will receive a single dose of VX 770 on Day 1. In Period 2, subjects will receive a daily dose of rifampin on Days 1 through 10 and a single dose of VX 770 on Day 6.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subject must be male and between 18 and 55 years of age
  • Subject must have a body mass index (BMI) from 18 to 30 kg/m2

Exclusion criteria

  • History of any illness or condition that, in the opinion of the investigator might confound the results of the study or pose an additional risk in administering study drug to the subject
  • Subjects who have active tuberculosis, human immunodeficiency virus, hepatitis C, or active hepatitis B

Treatment and study plan

VX-770

Drug

In Period 1, subjects will receive a single oral dose of VX-770 150 mg on Day 1. In Period 2, subjects will receive a single oral dose of VX-770 150 mg on Day 6.

Rifampin

Drug

In Period 2, subjects will receive a daily oral dose of rifampin 600 mg on Days 1 through 10

Primary outcomes

  1. VX 770 pharmacokinetic (PK) parameters

    Time frame: 17 days

Secondary outcomes

  1. VX 770 metabolite PK parameters in plasma

    Time frame: 17 days

  2. Rifampin concentration at time zero (C0) and AUC at steady state (AUCtau) following the administration of multiple doses of rifampin

    Time frame: 17 days

  3. Safety as measured by adverse events, physical examinations, vital signs, electrocardiograms (ECGs), and clinically significant laboratory assessments

    Time frame: 17 days

Interested in participating?

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Sponsors and collaborators

Lead sponsor

Vertex Pharmaceuticals Incorporated

Industry

Registry information

Official study title

An Open-Label Phase 1 Study to Examine the Effect of Multiple Doses of Rifampin on the Single-Dose Pharmacokinetics of VX 770 in Healthy Subjects

Important dates

Study start
2009
Primary completion
2010
Study completion
2010
First posted
Nov 23, 2009
Registry last updated
May 10, 2010

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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