Phase 3
N=19
A Study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of Ivacaftor in Subjects With Cystic Fibrosis Who Are Less Than 24 Months of Age and Have an Ivacaftor-Responsive CFTR Mutation
Cystic Fibrosis
Bottom Line
View on ClinicalTrials.gov: NCT02725567 ↗Enrolled (actual)
19
Serious AEs
11.3%
Results posted
Sep 2023
Primary outcome: Primary: Part A: Safety and Tolerability as Assessed by Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious (TEAEs) — 10; 1 Participants
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 3
- Interventions
- IVA (Drug)
- Age
- Pediatric · 0+ yrs
- Sex
- All
- Sponsor
- Vertex Pharmaceuticals Incorporated
- Primary completion
- Jun 2022
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Part A: Safety and Tolerability as Assessed by Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious (TEAEs) |
10; 1 | — |
| PRIMARY Part A: Observed Plasma Concentration of IVA and Their Metabolites (M1-IVA and M6-IVA) |
654; 1880; 2680; 956; 1990; 2460 | — |
| PRIMARY Part B +A/B: Safety and Tolerability as Assessed by Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious (TEAEs) |
38; 6 | — |
| PRIMARY Part A/B: Observed Plasma Concentration of IVA and Their Metabolites (M1-IVA and M6-IVA) |
348; 867; 1570; 381; 851; 1370 | — |
| SECONDARY Part B: Observed Plasma Concentration of IVA and Their Metabolites (M1-IVA and M6-IVA) |
457; 1340; 1980; 812; 1560; 1770 | — |
| SECONDARY Part B + A/B: Absolute Change From Baseline in Sweat Chloride |
-62.0 | — |
Summary
The purpose of this study was to evaluate the safety of ivacaftor treatment, and PK of ivacaftor and metabolites in participants with cystic fibrosis (CF) who are <24 months of age at treatment initiation and have an ivacaftor-responsive CF transmembrane conductance regulator (CFTR) gene mutation.
Eligibility Criteria
Inclusion Criteria
- Confirmed diagnosis of CF by sweat chloride value or CF mutation criteria.
- Have 1 of the following 10 CFTR mutations on at least 1 allele: G551D, G178R, S549N, S549R, G551S, G1244E, S1251N, S1255P, G1349D or R117H (eligible in regions where ivacaftor is approved for use). Part A/B group may also have other ivacaftor-responsive mutations.
- Hematology, serum chemistry, and vital signs results at screening with no clinically significant abnormalities that would interfere with the study assessments, as judged by the investigator.
Exclusion Criteria
- History of any illness or condition 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 participant
- Colonization with organisms associated with a more rapid decline in pulmonary status at screening (Only for Parts A and B)
- History of abnormal liver function or abnormal liver function at screening
- History of solid organ or hematological transplantation
- Use of any moderate or strong inducers or inhibitors of cytochrome P450 (CYP) 3A within 2 weeks before Day 1
- Participation in a clinical study involving administration of either an investigational or a marketed drug within 30 days or 5 terminal half-lives before screening
- Hemoglobin (Hgb) <9.5 g/dL at screening
- Chronic kidney disease of Stage 3 or above
- Presence of a non-congenital or progressive lens opacity or cataract at Screening
Other protocol defined Inclusion/Exclusion Criteria may apply.
Data sourced from ClinicalTrials.gov (NCT02725567). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.