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Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older Homozygous for the F508del-CFTR Mutation (DISCOVER)

27. august 2015 oppdatert av: Vertex Pharmaceuticals Incorporated

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

The purpose of this study was to evaluate the safety and efficacy of ivacaftor in participants with cystic fibrosis (CF) who were aged 12 years or older and were homozygous for the F508del-CF transmembrane conductance regulator (CFTR) mutation. Ivacaftor is a potent and selective CFTR potentiator of wild-type, G551D, F508del, and R117H forms of human CFTR protein. Potentiators are pharmacological agents that increase the chloride ion transport properties of the channel in the presence of cyclic adenosine monophosphate (AMP)-dependent protein kinase A (PKA) activation.

Studieoversikt

Status

Avsluttet

Forhold

Intervensjon / Behandling

Detaljert 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.

Studietype

Intervensjonell

Registrering (Faktiske)

140

Fase

  • Fase 2

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Forente stater
    • Alabama
      • Birmingham, Alabama, Forente stater, 35294
        • University of Alabama
    • Alaska
      • Anchorage, Alaska, Forente stater, 99508
        • Providence Medical Center
    • California
      • Oakland, California, Forente stater, 94611
        • Kaiser Permanente Medical Care Program
    • Connecticut
      • Hartford, Connecticut, Forente stater, 06106
        • Connecticut Children's Medical Center
    • Florida
      • Miami, Florida, Forente stater, 33136
        • University of Miami Miller School of Medicine
      • Orlando, Florida, Forente stater, 32801
        • Nemours Children's Clinic
    • Idaho
      • Boise, Idaho, Forente stater, 83712
        • St. Luke's CF Clinic
    • Illinois
      • Chicago, Illinois, Forente stater, 60637
        • University of Chicago
    • Indiana
      • Indianapolis, Indiana, Forente stater, 46202
        • Riley Hospital for Children
    • Maine
      • Portland, Maine, Forente stater, 04102
        • Maine Medical Center
    • Massachusetts
      • Boston, Massachusetts, Forente stater, 02114
        • Massachusetts General Hospital
      • Worcester, Massachusetts, Forente stater, 01655
        • University of Massachussetts Medical School
    • Michigan
      • Grand Rapids, Michigan, Forente stater, 49503
        • Helen DeVos Children's Hospital; Spectrum Health Hospitals
    • Missouri
      • Kansas City, Missouri, Forente stater, 64108
        • The Children's Mercy Hospital
    • New Hampshire
      • Lebanon, New Hampshire, Forente stater, 03756
        • Dartmouth-Hitchcock Medical Center
    • New Jersey
      • Long Branch, New Jersey, Forente stater, 07740
        • Monmouth Medical Center
      • Morristown, New Jersey, Forente stater, 07962
        • Morristown Memorial Hospital
    • New York
      • Albany, New York, Forente stater, 12208
        • Albany Medical College
      • Buffalo, New York, Forente stater, 14222
        • Women and Children's Hospital of Buffalo
      • Hawthorne, New York, Forente stater, 10532
        • New York Medical College
      • New York, New York, Forente stater, 10032
        • Columbia University Medical Center
      • New York City, New York, Forente stater, 10003
        • The CF Center, Beth Israel Medical Center
    • Ohio
      • Akron, Ohio, Forente stater, 44308
        • Akron Children's Hospital
      • Cincinnati, Ohio, Forente stater, 45229
        • Cincinnati Children's Hospital
      • Toledo, Ohio, Forente stater, 43606
        • Toldedo Children's Hospital
    • Oklahoma
      • Oklahoma City, Oklahoma, Forente stater, 73104
        • University of Oklahoma Health Sciences Center
    • Pennsylvania
      • Hershey, Pennsylvania, Forente stater, 17033
        • Hershey Medical Center
      • Philadelphia, Pennsylvania, Forente stater, 19134
        • St. Christopher's Hospital for Children
    • South Carolina
      • Charleston, South Carolina, Forente stater, 29425
        • Medical University of South Carolina
    • Tennessee
      • Memphis, Tennessee, Forente stater, 38103
        • University of Tennessee
    • Texas
      • Fort Worth, Texas, Forente stater, 76104
        • Cook Children's Medical Center
    • Utah
      • Salt Lake City, Utah, Forente stater, 84132
        • Univeristy of Utah
    • Vermont
      • Colchester, Vermont, Forente stater, 05446
        • Vermont Lung Center at the University of Vermont
    • Virginia
      • Richmond, Virginia, Forente stater, 23298
        • Medical College of Virginia

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

12 år og eldre (Barn, Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Firemannsrom

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / 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).
Legemiddel: Placebo
Tablett
Legemiddel: Ivacaftor
Tablet
Andre navn:
  • VX-770
Eksperimentell: 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).
Legemiddel: Ivacaftor
Tablet
Andre navn:
  • VX-770

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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

Resultatmål
Tiltaksbeskrivelse
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
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.
Part A baseline through Week 16
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.
Part A baseline through Week 16
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
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
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
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.
Part B baseline through Week 64
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.
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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Vertex Pharmaceuticals Incorporated

Samarbeidspartnere

Cystic Fibrosis Foundation

Etterforskere

  • Hovedetterforsker: Patrick A Flume, MD, Medical University of South Carolina

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Hjelpsomme linker

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. september 2009

Primær fullføring (Faktiske)

1. juli 2010

Studiet fullført (Faktiske)

1. mai 2013

Datoer for studieregistrering

Først innsendt

4. august 2009

Først innsendt som oppfylte QC-kriteriene

5. august 2009

Først lagt ut (Anslag)

6. august 2009

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

11. september 2015

Siste oppdatering sendt inn som oppfylte QC-kriteriene

27. august 2015

Sist bekreftet

1. august 2015

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • VX08-770-104
  • 2009-010261-23 (EudraCT-nummer)

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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