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

2015年8月27日 更新者：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.

調査の概要

状態

終了しました

条件

介入・治療

詳細な説明

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.

研究の種類

介入

入学 (実際)

140

段階

  • フェーズ2

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究場所

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

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

12年歳以上 (子、大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

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)

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか？

デザインの詳細

  • 主な目的：処理
  • 割り当て：ランダム化
  • 介入モデル：並列代入
  • マスキング：4倍

武器と介入

参加者グループ / アーム
介入・治療
プラセボコンパレーター：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).
薬：プラセボ
タブレット
薬：Ivacaftor
Tablet
他の名前：
  • VX-770
実験的：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).
薬：Ivacaftor
Tablet
他の名前：
  • VX-770

この研究は何を測定していますか？

主要な結果の測定

結果測定
メジャーの説明
時間枠
Part A : Absolute Change From Part A Baseline in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1) Through Week 16
時間枠：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

二次結果の測定

結果測定
メジャーの説明
時間枠
Part A : Absolute Change From Part A Baseline in Cystic Fibrosis Questionnaire-Revised (CFQ-R) Respiratory Domain Score Through Week 16
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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
時間枠：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

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

Vertex Pharmaceuticals Incorporated

協力者

Cystic Fibrosis Foundation

捜査官

  • 主任研究者：Patrick A Flume, MD、Medical University of South Carolina

出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

一般刊行物

便利なリンク

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始

2009年9月1日

一次修了 (実際)

2010年7月1日

研究の完了 (実際)

2013年5月1日

試験登録日

最初に提出

2009年8月4日

QC基準を満たした最初の提出物

2009年8月5日

最初の投稿 (見積もり)

2009年8月6日

学習記録の更新

投稿された最後の更新 (見積もり)

2015年9月11日

QC基準を満たした最後の更新が送信されました

2015年8月27日

最終確認日

2015年8月1日

詳しくは

本研究に関する用語

キーワード

追加の関連 MeSH 用語

その他の研究ID番号

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

この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。

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