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CompletedNCT01768663Updated Nov 15, 2013

A Phase 1 Study to Examine the Drug-Drug Interaction of Ciprofloxacin, Itraconazole, and Rifampin on the Combination of Lumacaftor With Ivacaftor in Healthy Adult Subjects

A Phase 1 interventional study of Lumacaftor and Ivacaftor in Cystic Fibrosis, sponsored by Vertex Pharmaceuticals Incorporated. Completed at 1 site in United States. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2013-11-15.

Sponsored by Vertex Pharmaceuticals Incorporated · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
80
Allocation
Non-randomized
Ages
18 Years to 55 Years
Sex
All
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Study summary

The purpose of this study is to examine the drug-drug interaction effects of ciprofloxacin, itraconazole, and rifampin on the pharmacokinetics of lumacaftor in combination with ivacaftor as well as to evaluate the potential effects of lumacaftor in combination with ivacaftor on lung function.

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Conditions studied

  • Cystic Fibrosis

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In context

Cystic Fibrosis

1,581 studies on the registry are indexed under Cystic Fibrosis; 190 are open to participants now.

This study's enrollment of 80 is above the median of 36 across 1,034 interventional studies indexed under Cystic Fibrosis.

Browse Cystic Fibrosis studies →

Lead sponsor

Vertex Pharmaceuticals Incorporated is the lead sponsor of 243 studies on the registry; 19 are open to participants now.

Of its 102 completed or terminated interventional studies of FDA-regulated products, 49 (48%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Male and female subjects must be between the ages of 18 and 55 years, inclusive
  • Body mass index (BMI) of 18 to 31 kg/m2, inclusive, and a total body weight >50 kg.

Exclusion criteria

Exclusion Criteria:

  • History of any illness that, in the opinion of the investigator, might confound the results of the study or pose an additional risk in administering study drug(s) to the subject. This may include, but is not limited to, a history of relevant drug or food allergies; history of cardiovascular or central nervous system disease; history or presence of clinically significant pathology; or history of mental disease.
  • History of febrile illness within 5 days before the first dose.
  • History of Gilbert's syndrome
  • Abnormal renal function as defined at screening
  • Blood donation of approximately 1 pint (500 mL) within 56 days before study drug administration
  • Treatment with an investigational drug within 30 days or 5 half-lives (or as determined by the local requirements, whichever is longer) preceding the first dose of study drug
  • Known hypersensitivity or prior adverse reaction to ciprofloxacin, or any member of the quinolone class of antimicrobial agents (Cohort 1 only); itraconazole, or to any of the other azoles (Cohort 2 only); rifampin, or to any of the rifamycins (Cohort 3 only)
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Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
80 participants (actual)

Study arms

  • Experimental
    Treatment Group (Cohort 1)

    Subjects will take lumacaftor in combination with ivacaftor for 14 days. Beginning on Day 15, subjects will take lumacaftor in combination with ivacaftor and ciprofloxacin through Day 21.

    Drug: Lumacaftor · Drug: Ivacaftor · Drug: Ciprofloxacin

  • Experimental
    Treatment Group (Cohort 2)

    Subjects will take lumacaftor in combination with ivacaftor for 14 days. Beginning on Day 15, subjects will take lumacaftor in combination with ivacaftor and itraconazole through Day 21.

    Drug: Lumacaftor · Drug: Ivacaftor · Drug: Itraconazole

  • Experimental
    Treatment Group (Cohort 3)

    Subjects will take lumacaftor in combination with ivacaftor for 14 days. Beginning on Day 15, subjects will take lumacaftor in combination with ivacaftor and rifampin through Day 24.

    Drug: Lumacaftor · Drug: Ivacaftor · Drug: Rifampin

  • Experimental
    Treatment Group (Cohort 4)

    Subjects will take a single dose of lumacaftor in combination with ivacaftor on 3 occasions separated by 7 days.

    Drug: Lumacaftor · Drug: Ivacaftor

Interventions

  • DrugLumacaftor

    tablet, 200mg taken every 12 hours

    Also known as: VX-809

  • DrugIvacaftor

    tablet, 250mg taken every 12 hours

    Also known as: VX-770

  • DrugCiprofloxacin

    750 mg taken every 12 hours

  • DrugItraconazole

    200mg taken once daily

  • DrugRifampin

    600mg taken once daily

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What researchers measure

Primary outcomes

  1. Cohorts 1-3: PK parameters including Cmax, and AUC from time of dosing to time tau of lumacaftor and ivacaftor in the absence and presence of ciprofloxacin, itraconazole, and rifampin

    Time frame: up to 24 days

  2. Cohort 4: Change in lung function from before treatment with lumacaftor/ivacaftor to after treatment with lumacaftor/ivacaftor.

    Time frame: up to 21 days

Secondary outcomes

  1. Cohorts 1-4: Safety and tolerability as measured by adverse events (AEs) and changes in laboratory test values (serum chemistry, hematology, coagulation, and urinalysis), vital signs, standard 12 lead electrocardiograms (ECGs), and spirometry

    Time frame: up to 31 days

  2. Cohort 4: PK parameters, including Cmax of lumacaftor/ivacaftor, and lung function

    Time frame: 16 days

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Study locations

1 site
  • Evansville, Indiana, United States
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 15, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01768663
Lead sponsor
Vertex Pharmaceuticals Incorporated
Responsible party
Sponsor
First posted
Jan 15, 2013
Start date
Jan 2013
Primary completion
Sep 2013
Last update
Nov 15, 2013

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2013. You cannot join it, but the record below documents what was studied.

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