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Lumacaftor/Ivacaftor Combination Therapy in Subjects With CF Who Have an A455E CFTR Mutation

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ClinicalTrials.gov Identifier: NCT03061331
Recruitment Status : Completed
First Posted : February 23, 2017
Results First Posted : October 2, 2018
Last Update Posted : October 2, 2018
Information provided by (Responsible Party):
Vertex Pharmaceuticals Incorporated

Brief Summary:
This is a Phase 2, randomized, double-blind, placebo-controlled, multicenter, crossover study that will evaluate the efficacy of LUM/IVA in subjects with CF 12 years of age and older who have at least one A455E mutation.

Condition or disease Intervention/treatment Phase
Cystic Fibrosis Drug: LUM/IVA Drug: Placebo Phase 2

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 20 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Crossover Study to Evaluate the Efficacy of Lumacaftor/Ivacaftor Combination Therapy in Subjects With Cystic Fibrosis Who Have an A455E-CFTR Mutation
Actual Study Start Date : January 31, 2017
Actual Primary Completion Date : September 6, 2017
Actual Study Completion Date : October 4, 2017

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Cystic Fibrosis
Drug Information available for: Ivacaftor

Arm Intervention/treatment
Experimental: Treatment Sequence 1
LUM/IVA in Treatment Period 1; washout; placebo in Treatment Period 2
LUM 400 mg/IVA 250 mg every 12 hours (q12h)
Other Name: lumacaftor/ivacaftor

Drug: Placebo
No Active Drug

Experimental: Treatment Sequence 2
Placebo in Treatment Period 1; washout; LUM/IVA in Treatment Period 2
LUM 400 mg/IVA 250 mg every 12 hours (q12h)
Other Name: lumacaftor/ivacaftor

Drug: Placebo
No Active Drug

Primary Outcome Measures :
  1. Absolute Change From Study Baseline in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1) Through Week 8 [ Time Frame: Study Baseline, Through Week 8 ]
    FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   12 Years and older   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male or female with confirmed diagnosis of CF
  • All subjects must have an A455E mutation on at least 1 CFTR allele; no more than 10 subjects may have an F508del mutation on 1 CFTR allele.
  • Forced expiratory volume in one second (FEV1) ≥30% of predicted and ≤90% of predicted at the Screening Visit, based on the Global Lung Function Initiative (GLI)-2012 multi ethnic all-age reference equations.
  • Stable CF disease as judged by the investigator.
  • Willing to remain on a stable medication regimen for CF from 4 weeks before Day 1 through the Follow up Visit.

Exclusion Criteria:

  • History of any comorbidity reviewed at the Screening Visit 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.
  • A G551D, G1244E, G1349D, G178R, G551S, S1251N, S1255P, S549N, S549R, or R117H mutation on at least one CFTR allele.
  • Pregnant or breastfeeding.
  • Any abnormal laboratory values at the Screening Visit.
  • History of cataract/lens opacity, or evidence of cataract/lens opacity determined to be clinically significant by the ophthalmologist or optometrist during the ophthalmologic examination at the Screening Visit.
  • Use of strong inhibitors or strong inducers of CYP3A, including consumption of certain herbal medications and certain fruit and fruit juices, within 14 days before Day 1
  • Sexually active subjects of reproductive potential who are not willing to follow the contraception requirements

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03061331

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Den Haag, Netherlands
University Medical Center, Utrecht, Department of Pulmonology and Tuberculosis
Heidelberglaan, Netherlands
Sponsors and Collaborators
Vertex Pharmaceuticals Incorporated
  Study Documents (Full-Text)

Documents provided by Vertex Pharmaceuticals Incorporated:
Study Protocol  [PDF] February 17, 2017
Statistical Analysis Plan  [PDF] September 7, 2017

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Vertex Pharmaceuticals Incorporated
ClinicalTrials.gov Identifier: NCT03061331    
Other Study ID Numbers: VX15-809-111
2016-001585-29 ( EudraCT Number )
First Posted: February 23, 2017    Key Record Dates
Results First Posted: October 2, 2018
Last Update Posted: October 2, 2018
Last Verified: September 2018

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Product Manufactured in and Exported from the U.S.: Yes
Additional relevant MeSH terms:
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Cystic Fibrosis
Pathologic Processes
Pancreatic Diseases
Digestive System Diseases
Lung Diseases
Respiratory Tract Diseases
Genetic Diseases, Inborn
Infant, Newborn, Diseases
Chloride Channel Agonists
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action