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

27 августа 2015 г. обновлено: 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.

Обзор исследования

Статус

Прекращено

Условия

Подробное описание

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.

Тип исследования

Интервенционный

Регистрация (Действительный)

140

Фаза

  • Фаза 2

Контакты и местонахождение

В этом разделе приведены контактные данные лиц, проводящих исследование, и информация о том, где проводится это исследование.

Места учебы

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

Критерии участия

Исследователи ищут людей, которые соответствуют определенному описанию, называемому критериям приемлемости. Некоторыми примерами этих критериев являются общее состояние здоровья человека или предшествующее лечение.

Критерии приемлемости

Возраст, подходящий для обучения

12 лет и старше (Ребенок, Взрослый, Пожилой взрослый)

Принимает здоровых добровольцев

Нет

Полы, имеющие право на обучение

Все

Описание

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)

Учебный план

В этом разделе представлена ​​подробная информация о плане исследования, в том числе о том, как планируется исследование и что оно измеряет.

Как устроено исследование?

Детали дизайна

  • Основная цель: Уход
  • Распределение: Рандомизированный
  • Интервенционная модель: Параллельное назначение
  • Маскировка: Четырехместный

Оружие и интервенции

Группа участников / Армия
Вмешательство/лечение
Плацебо Компаратор: 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).
Планшет
Tablet
Другие имена:
  • VX-770
Экспериментальный: 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
Другие имена:
  • VX-770

Что измеряет исследование?

Первичные показатели результатов

Мера результата
Мера Описание
Временное ограничение
Part A : Absolute Change From Part A Baseline in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1) Through Week 16
Временное ограничение: 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

Вторичные показатели результатов

Мера результата
Мера Описание
Временное ограничение
Part A : Absolute Change From Part A Baseline in Cystic Fibrosis Questionnaire-Revised (CFQ-R) Respiratory Domain Score Through Week 16
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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
Временное ограничение: 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

Соавторы и исследователи

Здесь вы найдете людей и организации, участвующие в этом исследовании.

Соавторы

Следователи

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

Публикации и полезные ссылки

Лицо, ответственное за внесение сведений об исследовании, добровольно предоставляет эти публикации. Это может быть что угодно, связанное с исследованием.

Даты записи исследования

Эти даты отслеживают ход отправки отчетов об исследованиях и сводных результатов на сайт ClinicalTrials.gov. Записи исследований и сообщаемые результаты проверяются Национальной медицинской библиотекой (NLM), чтобы убедиться, что они соответствуют определенным стандартам контроля качества, прежде чем публиковать их на общедоступном веб-сайте.

Изучение основных дат

Начало исследования

1 сентября 2009 г.

Первичное завершение (Действительный)

1 июля 2010 г.

Завершение исследования (Действительный)

1 мая 2013 г.

Даты регистрации исследования

Первый отправленный

4 августа 2009 г.

Впервые представлено, что соответствует критериям контроля качества

5 августа 2009 г.

Первый опубликованный (Оценивать)

6 августа 2009 г.

Обновления учебных записей

Последнее опубликованное обновление (Оценивать)

11 сентября 2015 г.

Последнее отправленное обновление, отвечающее критериям контроля качества

27 августа 2015 г.

Последняя проверка

1 августа 2015 г.

Дополнительная информация

Эта информация была получена непосредственно с веб-сайта clinicaltrials.gov без каких-либо изменений. Если у вас есть запросы на изменение, удаление или обновление сведений об исследовании, обращайтесь по адресу register@clinicaltrials.gov. Как только изменение будет реализовано на clinicaltrials.gov, оно будет автоматически обновлено и на нашем веб-сайте. .

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