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Lumacaftor/Ivacaftor Combination Therapy in Subjects With Cystic Fibrosis Who Have an A455E-CFTR Mutation

A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Crossover Study to Evaluate the Efficacy of Lumacaftor/Ivacaftor Combination Therapy in Subjects With Cystic Fibrosis Who Have an A455E-CFTR Mutation

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2016-001585-29-NL
Enrollment
20
Registered
2016-07-18
Start date
2016-12-21
Completion date
Unknown
Last updated
2018-01-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cystic fibrosis MedDRA version: 20.0 Level: PT Classification code 10011762 Term: Cystic fibrosis System Organ Class: 10010331 - Congenital, familial and genetic disorders

Interventions

Trade Name: Orkambi 200 mg/125 mg film-coated tablets Product Name: LUM/IVA fixed-dose combination Pharmaceutical Form: Film-coated tablet INN or Proposed INN: LUMACAFTOR Current Sponsor code: VX-809

Sponsors

Vertex Pharmaceuticals Incorporated
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Male or female with confirmed diagnosis of CF. The subject must have both of the following: - One or more characteristic phenotypic features, such as chronic cough and sputum production, persistent chest radiograph abnormalities, or airway obstruction manifested by wheezing and air trapping; or a history of CF in a sibling; or a positive newborn screening test result; -An increased sweat chloride concentration by pilocarpine iontophoresis on two or more occasions; or identification of two CF mutations; or demonstration of abnormal nasal epithelial ion transport. 2. Age 12 years or older on the date of informed consent. 3. All subjects must have an A455E mutation on at least 1 CFTR allele. 4. Forced expiratory volume in one second (FEV1) =30% of predicted and =90% of predicted at the Screening Visit, based on the Global Lung Function Initiative (GLI)-012 multi-ethnic all-age reference equations.24 5. Stable CF disease as judged by the investigator. 6. Willing to remain on a stable medication regimen for CF from 4 weeks before Day 1 through the Follow-up Visit. 7. Willing and able to comply with scheduled visits, treatment plan, study restrictions, laboratory tests, contraceptive guidelines, and other study procedures. 8. Subject (or subject’s legally appointed and authorized representative) will sign and date an informed consent form (ICF), and where appropriate, assent form. Are the trial subjects under 18? yes Number of subjects for this age range: 5 F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 15 F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. History of any comorbidity reviewed at the Screening Visit 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. For example: - A history of cirrhosis with portal hypertension. - An acute upper or lower respiratory infection, pulmonary exacerbation, or changes in therapy (including antibiotics) for pulmonary disease within 28 days before Day 1 (the first dose of study drug). 2. A G551D, G1244E, G1349D, G178R, G551S, S1251N, S1255P, S549N, S549R, or R117H mutation on at least one CFTR allele. 3. Ongoing or prior participation in an investigational drug study (including studies investigating LUM/IVA or IVA) within 30 days before the Screening Visit. - A washout period of 5 terminal half-lives of the previous investigational study drug or 30 days, whichever is longer, must elapse before the Screening Visit. The duration of the elapsed time may be longer if required by local regulations. - Subjects who participated in Vertex Study VX14-661-108 may not be enrolled. - Ongoing participation in a noninterventional study (including observational studies) is permitted. 4. Pregnant or breastfeeding. 5. Any of the following abnormal laboratory values at the Screening Visit: ? -Hemoglobin 5 × ULN Bilirubin >2 × ULN Glomerular filtration rate =45 mL/min/1.73 m2 (calculated by the Counahan-Barratt equation). 6. History of cataract/lens opacity, or evidence of cataract/lens opacity determined to be clinically significant by the ophthalmologist or optometrist during the ophthalmologic examination at the Screening Visit (if applicable). 7. Use of strong inhibitors or strong inducers of CYP3A, including consumption of certain herbal medications (e.g., St. John’s Wort) and certain fruit and fruit juices, within 14 days before Day 1 (the first dose of study drug). 8. Sexually active subjects of reproductive potential who are not willing to follow the contraception requirements outlined in Section 11.6.5.

Design outcomes

Primary

MeasureTime frame
Main Objective: To evaluate the efficacy of LUM/IVA in subjects with CF 12 years of age and older who have at least one A455E mutation.;Secondary Objective: To explore the association between LUM/IVA-induced CFTR function in in vitro organoid-based measurements and clinical response to LUM/IVA in subjects with CF 12 years of age and older who have at least one A455E mutation. To explore the effect of LUM/IVA on glucose tolerance and insulin secretion in subjects with CF 12 years of age and older who have at least one A455E mutation.;Primary end point(s): Absolute change from baseline in percent predicted forced expiratory volume in 1 second (ppFEV1) through 8 weeks of treatment.;Timepoint(s) of evaluation of this end point: through 8 weeks of treatment

Secondary

MeasureTime frame
Timepoint(s) of evaluation of this end point: 1. through 8 weeks of treatment 2. at 8 weeks of treatment 4. after approximately 8 weeks of treatment;Secondary end point(s): 1. Change from baseline in sweat chloride through 8 weeks of treatment. 2. Change from baseline in the Cystic Fibrosis Questionnaire Revised (CFQ-R) at 8 weeks of treatment. 3. Organoid-based measurements of LUM/IVA-induced CFTR function in vitro versus clinical outcomes. 4. Change from baseline in glucose and insulin levels during the OGTT after approximately 8 weeks of treatment.

Countries

Netherlands

Contacts

Public ContactClinical Trials and Medical Info

Vertex Pharmaceuticals Incorporated

medicalinfo@vrtx.com001 877 634 8789

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026