Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older Homozygous for the F508del-CFTR Mutation (DISCOVER)
A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Safety and Efficacy of VX-770 in Subjects Aged 12 Years and Older With Cystic Fibrosis Who Are Homozygous for the F508del-CFTR Mutation
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
This study investigated the effects of ivacaftor in participants with cystic fibrosis (CF) >=12 years of age with a forced expiratory volume in 1 second (FEV1) >=40 percent (%) predicted. This study was conducted in 2 parts.
- Part A of this study was a randomized, double-blind, placebo-controlled, parallel-group evaluation of participants with CF who were aged 12 years or older and were homozygous for the F508del-CFTR mutation.
- Part B of this study was an open-label extension of Part A, enrolling participants who completed Part A and met pre-specified endpoint criteria, and explored the safety and efficacy of ivacaftor over long-term treatment in participants with CF aged 12 years or older who were homozygous for the F508del-CFTR mutation.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 2
Kontakter og lokationer
Studiesteder
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Alabama
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Birmingham, Alabama, Forenede Stater, 35294
- University of Alabama
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Alaska
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Anchorage, Alaska, Forenede Stater, 99508
- Providence Medical Center
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California
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Oakland, California, Forenede Stater, 94611
- Kaiser Permanente Medical Care Program
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Connecticut
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Hartford, Connecticut, Forenede Stater, 06106
- Connecticut Children's Medical Center
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Florida
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Miami, Florida, Forenede Stater, 33136
- University of Miami Miller School of Medicine
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Orlando, Florida, Forenede Stater, 32801
- Nemours Children's Clinic
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Idaho
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Boise, Idaho, Forenede Stater, 83712
- St. Luke's CF Clinic
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Illinois
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Chicago, Illinois, Forenede Stater, 60637
- University of Chicago
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Indiana
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Indianapolis, Indiana, Forenede Stater, 46202
- Riley Hospital for Children
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Maine
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Portland, Maine, Forenede Stater, 04102
- Maine Medical Center
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Massachusetts
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Boston, Massachusetts, Forenede Stater, 02114
- Massachusetts General Hospital
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Worcester, Massachusetts, Forenede Stater, 01655
- University of Massachussetts Medical School
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Michigan
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Grand Rapids, Michigan, Forenede Stater, 49503
- Helen DeVos Children's Hospital; Spectrum Health Hospitals
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Missouri
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Kansas City, Missouri, Forenede Stater, 64108
- The Children's Mercy Hospital
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New Hampshire
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Lebanon, New Hampshire, Forenede Stater, 03756
- Dartmouth-Hitchcock Medical Center
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New Jersey
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Long Branch, New Jersey, Forenede Stater, 07740
- Monmouth Medical Center
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Morristown, New Jersey, Forenede Stater, 07962
- Morristown Memorial Hospital
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New York
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Albany, New York, Forenede Stater, 12208
- Albany Medical College
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Buffalo, New York, Forenede Stater, 14222
- Women and Children's Hospital of Buffalo
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Hawthorne, New York, Forenede Stater, 10532
- New York Medical College
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New York, New York, Forenede Stater, 10032
- Columbia University Medical Center
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New York City, New York, Forenede Stater, 10003
- The CF Center, Beth Israel Medical Center
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Ohio
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Akron, Ohio, Forenede Stater, 44308
- Akron Children's Hospital
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Cincinnati, Ohio, Forenede Stater, 45229
- Cincinnati Children's Hospital
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Toledo, Ohio, Forenede Stater, 43606
- Toldedo Children's Hospital
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Oklahoma
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Oklahoma City, Oklahoma, Forenede Stater, 73104
- University of Oklahoma Health Sciences Center
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Pennsylvania
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Hershey, Pennsylvania, Forenede Stater, 17033
- Hershey Medical Center
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Philadelphia, Pennsylvania, Forenede Stater, 19134
- St. Christopher's Hospital for Children
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South Carolina
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Charleston, South Carolina, Forenede Stater, 29425
- Medical University of South Carolina
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Tennessee
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Memphis, Tennessee, Forenede Stater, 38103
- University of Tennessee
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Texas
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Fort Worth, Texas, Forenede Stater, 76104
- Cook Children's Medical Center
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Utah
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Salt Lake City, Utah, Forenede Stater, 84132
- Univeristy of Utah
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Vermont
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Colchester, Vermont, Forenede Stater, 05446
- Vermont Lung Center at the University of Vermont
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Virginia
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Richmond, Virginia, Forenede Stater, 23298
- Medical College of Virginia
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Confirmed diagnosis of cystic fibrosis (CF) and homozygous for F508del-CFTR mutation
- Forced expiratory volume in 1 second (FEV1) of at least 40% of predicted normal for age, gender, and height
- Willing to use at least 2 highly effective birth control methods during the study
- No clinically significant abnormalities that would have interfered with the study assessments, as judged by the investigator
- Able to understand and comply with protocol requirements, restrictions, and instructions and likely to complete the study as planned, as judged by the investigator
Exclusion Criteria:
- History of any illness or condition that might confound the results of the study or pose an additional risk in administering study drug to the subject
- Acute respiratory infection, pulmonary exacerbation, or changes in therapy for pulmonary disease within 4 weeks of Day 1 of the study
- History of alcohol, medication or illicit drug abuse within one year prior to Day 1
- Abnormal liver function >=3 x the upper limit of normal
- Abnormal renal function at Screening
- History of solid organ or hematological transplantation
- Pregnant or breast-feeding (for women)
- Ongoing participation in another therapeutic clinical study or prior participation in an investigational drug study within 30 days prior to screening
- Previous participation in a VX-809 study
- Used inhaled hypertonic saline treatment
- Concomitant use of any inhibitors or inducers of cytochrome P450 3A4 (CYP3A4)
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Placebo komparator: Placebo
Placebo matched to ivacaftor tablet orally every 12 hours (q12h) for 16 weeks during Part A (double-blind treatment period), followed by ivacaftor 150 mg tablet orally q12h for 96 weeks during Part B (open-label extension period).
|
Tablet
Tablet
Andre navne:
|
|
Eksperimentel: Ivacaftor
Ivacaftor 150 milligram (mg) tablet orally q12h for 16 weeks during Part A (double-blind treatment period), followed by ivacaftor 150 mg tablet orally q12h for 96 weeks during Part B (open-label extension period).
|
Tablet
Andre navne:
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Part A : Absolute Change From Part A Baseline in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1) Through Week 16
Tidsramme: Part A baseline through Week 16
|
Spirometry (as measured by ppFEV1) is a standardized assessment to evaluate lung function that is the most widely used endpoint in cystic fibrosis studies.
FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration.
ppFEV1 (predicted for age, gender, and height) was calculated using the Knudson method.
|
Part A baseline through Week 16
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Part A : Absolute Change From Part A Baseline in Cystic Fibrosis Questionnaire-Revised (CFQ-R) Respiratory Domain Score Through Week 16
Tidsramme: Part A baseline through Week 16
|
The CFQ-R is a validated patient-reported outcome measuring health-related quality of life for participants with cystic fibrosis.
Respiratory domain assessed respiratory symptoms (for example, coughing, congestion, wheezing), score range: 0-100; Higher scores indicating fewer symptoms and better health-related quality of life.
|
Part A baseline through Week 16
|
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Part A : Absolute Change From Part A Baseline in Sweat Chloride Concentration Through Week 16
Tidsramme: Part A baseline through Week 16
|
The sweat chloride (quantitative pilocarpine iontophoresis) test is a standard diagnostic tool for cystic fibrosis (CF), serving as an indicator of cystic fibrosis transmembrane conductance regulator (CFTR) activity.
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Part A baseline through Week 16
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Part A : Rate of Change From Baseline in Weight Through Week 16
Tidsramme: Part A baseline through Week 16
|
As malnutrition is common in participants with cystic fibrosis (CF) because of increased energy expenditures due to lung disease and fat malabsorption, body weight is an important clinical measure of nutritional status.
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Part A baseline through Week 16
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Part B : Absolute Change From Part A and Part B Baseline in ppFEV1 Through Week 64
Tidsramme: Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
ppFEV1 is defined in Outcome Measure 1.
|
Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
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Part B : Rate of Change From Part A Baseline in ppFEV1 Through Week 64
Tidsramme: Part A baseline through Week 64
|
ppFEV1 is defined in Outcome Measure 1.
|
Part A baseline through Week 64
|
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Part B : Rate of Change From Part B Baseline in ppFEV1 Through Week 64
Tidsramme: Part B baseline through Week 64
|
ppFEV1 is defined in Outcome Measure 1.
|
Part B baseline through Week 64
|
|
Part B : Absolute Change From Part A and Part B Baseline in CFQ-R Respiratory Domain Score Through Week 64
Tidsramme: Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
The CFQ-R is a validated patient-reported outcome measuring health-related quality of life for participants with cystic fibrosis.
Respiratory domain assessed respiratory symptoms (for example, coughing, congestion, wheezing), score range: 0-100; Higher scores indicating fewer symptoms and better health-related quality of life.
|
Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
|
Part B : Absolute Change From Part A and Part B Baseline in Sweat Chloride Concentration Through Week 64
Tidsramme: Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
The sweat chloride (quantitative pilocarpine iontophoresis) test is a standard diagnostic tool for cystic fibrosis (CF), serving as an indicator of cystic fibrosis transmembrane conductance regulator (CFTR) activity.
|
Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
|
Part B : Absolute Change From Part A and Part B Baseline in Weight Through Week 64
Tidsramme: Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
As malnutrition is common in patients with cystic fibrosis (CF) because of increased energy expenditures due to lung disease and fat malabsorption, body weight is an important clinical measure of nutritional status.
|
Change from Part A baseline: Part A Baseline, Week 64; Change from Part B baseline: Part B Baseline (Week 16), Week 64
|
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Part B : Number of Participants With Pulmonary Exacerbations
Tidsramme: Part B baseline through Week 64
|
Pulmonary exacerbation was defined as new, or changed, antibiotic therapy (intravenous, inhaled, or oral) for any 4 or more of the following signs/symptoms: change in sputum; new or increased hemoptysis; increased cough; increased dyspnea; malaise, fatigue, or lethargy; temperature above 38 degrees Celsius; anorexia or weight loss; sinus pain or tenderness; change in sinus discharge; change in physical examination of the chest; decrease in pulmonary function by 10 percent (%); and radiographic changes indicative of pulmonary infection.
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Part B baseline through Week 64
|
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Part B : Number of Pulmonary Exacerbation Events
Tidsramme: Part B baseline through Week 64
|
Pulmonary exacerbation was defined as new, or changed, antibiotic therapy (intravenous, inhaled, or oral) for any 4 or more of the following signs/symptoms: change in sputum; new or increased hemoptysis; increased cough; increased dyspnea; malaise, fatigue, or lethargy; temperature above 38 degrees Celsius; anorexia or weight loss; sinus pain or tenderness; change in sinus discharge; change in physical examination of the chest; decrease in pulmonary function by 10 percent (%); and radiographic changes indicative of pulmonary infection.
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Part B baseline through Week 64
|
|
Part B : Number of Pulmonary Exacerbation Events Per Participant Per Year
Tidsramme: Part B baseline through Week 64
|
Pulmonary exacerbation was defined as new, or changed, antibiotic therapy (intravenous, inhaled, or oral) for any 4 or more of the following signs/symptoms: change in sputum; new or increased hemoptysis; increased cough; increased dyspnea; malaise, fatigue, or lethargy; temperature above 38 degrees Celsius; anorexia or weight loss; sinus pain or tenderness; change in sinus discharge; change in physical examination of the chest; decrease in pulmonary function by 10 percent (%); and radiographic changes indicative of pulmonary infection.
|
Part B baseline through Week 64
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Patrick A Flume, MD, Medical University of South Carolina
Publikationer og nyttige links
Hjælpsomme links
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- VX08-770-104
- 2009-010261-23 (EudraCT nummer)
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