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Study of VX-770 and Rifampin in Healthy Male Subjects

Phase 1
Completed
Conditions
Cystic Fibrosis
Interventions
Registration Number
NCT01018368
Lead Sponsor
Vertex Pharmaceuticals Incorporated
Brief Summary

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

Detailed Description

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.

Recruitment & Eligibility

Status
COMPLETED
Sex
Male
Target Recruitment
24
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

Study & Design

Study Type
INTERVENTIONAL
Study Design
CROSSOVER
Arm && Interventions
GroupInterventionDescription
VX-770VX-770-
RifampinRifampin-
Primary Outcome Measures
NameTimeMethod
VX 770 pharmacokinetic (PK) parameters17 days
Secondary Outcome Measures
NameTimeMethod
VX 770 metabolite PK parameters in plasma17 days
Rifampin concentration at time zero (C0) and AUC at steady state (AUCtau) following the administration of multiple doses of rifampin17 days
Safety as measured by adverse events, physical examinations, vital signs, electrocardiograms (ECGs), and clinically significant laboratory assessments17 days
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