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

27 de agosto de 2015 actualizado por: 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.

Descripción general del estudio

Estado

Terminado

Condiciones

Intervención / Tratamiento

Descripción detallada

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.

Tipo de estudio

Intervencionista

Inscripción (Actual)

140

Fase

  • Fase 2

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

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

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

12 años y mayores (Niño, Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

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)

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Cuadruplicar

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Comparador de placebos: 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).
Droga: Placebo
Tableta
Droga: Ivacaftor
Tablet
Otros nombres:
  • VX-770
Experimental: 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).
Droga: Ivacaftor
Tablet
Otros nombres:
  • VX-770

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Part A : Absolute Change From Part A Baseline in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1) Through Week 16
Periodo de tiempo: 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

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Part A : Absolute Change From Part A Baseline in Cystic Fibrosis Questionnaire-Revised (CFQ-R) Respiratory Domain Score Through Week 16
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Vertex Pharmaceuticals Incorporated

Colaboradores

Cystic Fibrosis Foundation

Investigadores

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

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Publicaciones Generales

Enlaces Útiles

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio

1 de septiembre de 2009

Finalización primaria (Actual)

1 de julio de 2010

Finalización del estudio (Actual)

1 de mayo de 2013

Fechas de registro del estudio

Enviado por primera vez

4 de agosto de 2009

Primero enviado que cumplió con los criterios de control de calidad

5 de agosto de 2009

Publicado por primera vez (Estimar)

6 de agosto de 2009

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

11 de septiembre de 2015

Última actualización enviada que cumplió con los criterios de control de calidad

27 de agosto de 2015

Última verificación

1 de agosto de 2015

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

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

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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