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Restore CFTR Protein Completed with Results
Phase 3 study of lumacaftor/ivacaftor (Orkambi®) in babies with two copies of the F508del CFTR mutation (Vertex VX-16-809-122 )
This study evaluated the safety of lumacaftor/ivacaftor (Orkambi®) and its effect on the body in babies ages 1 to less than 2 years old who have cystic fibrosis and two copies of the F508del CFTR mutation.
This was an open-label study designed to look at the safety and effectiveness of Orkambi® in babies ages 1 to less than 2 years old who have two copies of the F508del CFTR mutation children. In Part A, Orkambi® was given over 15 days. Children weighing 7 to <10kg received LUM 75mg/IVA 94mg, those weighing 10 to <14kg received LUM 100mg/IVA 125mg, and those weighing ≥14kg received LUM 150mg/IVA 188mg twice daily. Part B started after Part A was complete and Orkambi® was given over 24 weeks. The Part B dosing was updated as follows: children weighing 7 to 9kg received LUM 75 mg/IVA 94 mg, those weighing 9 to 14 kg received LUM 100 mg/IVA 125 mg, and those weighing >14 kg received LUM 150 mg/IVA 188 mg twice daily.
Eligibility
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Age:
1 Years to 2 Years -
Mutation(s):
Two Copies F508del -
FEV1% Predicted:
No FEV1 Limit
For more information about the results of this study and where it was conducted, visit ClinicalTrials.gov.
Study Results
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What We Learned:
Orkambi® treatment using weight-adjusted doses appeared to be generally safe and well tolerated in children ages 1 to less than 2 years old and resulted in reduced sweat chloride. The safety profile was consistent with that observed in older age groups. Children showed improved biomarkers of pancreatic function and appeared to have normal growth during the treatment period.
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Primary Findings:
Effectiveness:
This study was conducted between September 2018 and October 2021.
Part A of this study recruited 14 participants, of whom one discontinued treatment due to a rash while all other participants completed the treatment period and confirmed the dose levels were appropriate for Part B. Part B recruited 46 participants of whom one discontinued treatment due to increased liver enzymes while all other participants completed the treatment period.
Orkambi® treatmen for 24 weeks resulted in a decrease in sweat chloride of -29.1 mmol/L. This decrease was similar in magnitude to what was observed in the older participants of the phase 3 trials of Orkambi®.
Safety:
Orkambi® weight-adjusted doses appeared to be generally well-tolerated in children ages 1 to less than 2 years. Elevated liver function enzymes were noted for 11% of participants. The rate of elevated liver function enzymes in this group indicated that frequent monitoring of liver function should occur in young children using this drug, particularly those with a history of elevated liver function enzymes.
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Citation:
Am J Respir Crit Care Med 2022;206(10):1239-1247
For current information about the overall development status of this drug, please check the Drug Development Pipeline.
Study Design
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Study Type: ?more info
Interventional -
Randomized Study: ?more info
No -
Placebo Controlled: ?more info
No -
Length of Participation:
38 weeks -
Number of Study Visits:
11
Additional Information
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Phase: ?more info
Phase Three -
Study Sponsor: ?more info
Vertex -
Study Drugs:
Eligibility
-
Age:
1 Years to 2 Years -
Mutation(s):
Two Copies F508del -
FEV1% Predicted:
No FEV1 Limit
For more information about the results of this study and where it was conducted, visit ClinicalTrials.gov.
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