Study to Evaluate Safety, Efficacy, and Tolerability of TEZ/IVA in Subjects With Cystic Fibrosis (CF) Who Have Previously Discontinued Orkambi
- Conditions
- Cystic FibrosisMedDRA version: 20.0 Level: PT Classification code 10011762 Term: Cystic fibrosis System Organ Class: 10010331 - Congenital, familial and genetic disordersTherapeutic area: Diseases [C] - Respiratory Tract Diseases [C08]
- Registration Number
- EUCTR2017-000540-18-FR
- Lead Sponsor
- Vertex Pharmaceuticals Incorporated
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Recruiting
- Sex
- Not specified
- Target Recruitment
- 98
1. Subject (or subject’s legally appointed and authorized representative) will sign and date an informed consent form (ICF) and, where appropriate, an assent form.
2. Willing and able to comply with scheduled visits, treatment plan, study restrictions, laboratory tests, contraceptive guidelines, and other study procedures.
3. Males or females, aged 12 years or older on the date of informed consent or, where appropriate, date of assent.
4. Prior discontinuation of Orkambi, with at least 1 respiratory sign or symptom considered related to therapy, including but not limited to the following:
• Chest discomfort
• Dyspnea (shortness of breath)
• Respiration abnormal (chest tightness)
• Asthma
• Bronchial hyperreactivity
• Bronchospasm
• Wheezing
• Asymptomatic reduction in relative change in ppFEV1 of >12% within 2 weeks after Orkambi initiation
Discontinuation from Orkambi should primarily be due to a respiratory event. However, concomitant non-respiratory events will not exclude subjects from participation. Documentation of specific qualifying signs or symptoms is not required. Investigator attestation will be accepted if information is not present in source materials.
5. Resolution or stabilization of qualifying event(s) >28 days prior to Screening.
6. Discontinuation of Orkambi therapy must have occurred within approximately 12 weeks from the first dose of Orkambi. In the event that the subject reinitiated Orkambi, discontinuation of Orkambi therapy must have occurred within approximately 12 weeks from the time of the most recent initiation. Investigator attestation will be accepted if information is not present in source materials.
7. Homozygous for F508del as documented in the subject’s medical record. If genotype documentation is not available in the medical record, genotyping will be performed during screening. If the screening genotype result is not received by the end of the Screening Period and all other eligibility criteria have been met, the subject may be randomized. Note: Subjects who have been randomized and whose screening genotype does not confirm study eligibility must be discontinued from the study as described in Section 9.9.
8. FEV1 =25% and =90% of predicted normal for age, sex, and height (equations of Wang et al. or Hankinson et al. 12, 13) at Screening Visit (Section 11.3.1). Spirometry measurements must meet American Thoracic Society (ATS)/European Respiratory Society (ERS) criteria for acceptability and repeatability (Section 11.3.1).
9. Stable CF disease as judged by the investigator.
10. Willing to remain on a stable CF medication regimen from screening through the Safety Follow-up Contact.
Are the trial subjects under 18? yes
Number of subjects for this age range: 18
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range 72
F.1.3 Elderly (>=65 years) no
F.1.3.1 Number of subjects for this age range
Subjects who meet any of the following exclusion criteria will not be eligible for this study:
1. History of any comorbidity that, in the opinion of the investigator, might confound the results of the study or pose an additional risk in administering study drug to the subject
Examples of such comorbidities may include, but are not limited to:
• Respiratory:
o Massive hemoptysis within the last 12 months
o Any of the following within the past 12 months and not associated with an acute, resolved event:
- Six-minute walk test distance <400 m
- Resting arterial blood gas on room air showing PaCO2 >50 mm Hg or PaO2 <55 mm Hg
- Systolic pulmonary arterial pressure (PAP) >35 mm Hg on echocardiography or a mean PAP >25 mm Hg measured by right heart catheterization, in the absence of a hypoxemic exacerbation or with an alternate etiology to explain the findings
• Non-respiratory: history of cirrhosis with portal hypertension, history of and/or risk factors for ventricular arrhythmia (e.g., long QT syndrome, hypokalemia, heart failure, left ventricular hypertrophy, bradycardia, myocardial infarction, cardiomyopathy, morbid obesity, acute neurologic events [subarachnoid hemorrhage, intracranial hemorrhage, cerebrovascular accident, and intracranial trauma], autonomic neuropathy, and significant anemia)
2. Recent rapid or progressive deterioration in respiratory status
3. Receiving continuous oxygen at >2L/min or on face-mask ventilation
4. Any of the following abnormal laboratory values at Screening:
• Abnormal liver function defined as any 2 or more of the following: =3 × upper limit of normal (ULN) aspartate transferase (AST), =3 × ULN alanine transferase (ALT), =3 × ULN gamma-glutamyl transpeptidase, =3 × ULN alkaline phosphatase (ALP), or =2 × ULN total bilirubin.
• Abnormal liver function defined as any increase of =5 × ULN AST or ALT.
• Abnormal renal function defined as glomerular filtration rate =50 mL/min/1.73 m2 (calculated by the Modification of Diet in Renal Disease Study Equation) for subjects =18 years of age and =45 mL/min/1.73 m2 (calculated by the Counahan-Barratt equation) for subjects aged 12 to 17 years (inclusive).
5. Child-Pugh Class B or C hepatic impairment
6. An acute upper or lower respiratory infection, pulmonary exacerbation, or change in therapy (including antibiotics) for pulmonary disease within 28 days before Day 1 (first dose of study drug)
7. Documentation of colonization with organisms associated with a more rapid decline in pulmonary status (e.g. Burkholderia cenocepacia, Burkholderia dolosa, and Mycobacterium abscessus)
8. History of lung transplantation since most recent initiation of Orkambi
9. History of alcohol or drug abuse in the past year as deemed by the investigator, including but not limited to cannabis, cocaine, and opiates
10. Participation in an investigational drug study or use of a CFTR modulator (including Orkambi) within 28 days or 5 terminal half-lives before screening of the previous investigational study drug or CFTR modulator, whichever is longer
• Ongoing participation in a noninterventional study (includi
Study & Design
- Study Type
- Interventional clinical trial of medicinal product
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Main Objective: To evaluate the respiratory safety of TEZ/IVA in subjects with CF homozygous for F508del and who discontinued treatment with Orkambi due to respiratory symptoms considered related to treatment;<br> Secondary Objective: • To evaluate the efficacy of tezacaftor in combination with ivacaftor (TEZ/IVA) in subjects with CF homozygous for F508del and who discontinued treatment with Orkambi due to respiratory symptoms considered related to treatment.<br> • To evaluate patient-reported outcomes after treatment with TEZ/IVA in subjects with CF homozygous for F508del who discontinued with Orkambi due to respiratory symptoms considered related to treatment.<br> ;Primary end point(s): • Incidence of respiratory AEs;Timepoint(s) of evaluation of this end point: Monitored throughout the study
- Secondary Outcome Measures
Name Time Method