Skip to content

This study investigates the effect of switching from Orkambi treatment to Symkevi. In particuar we want to investigate the effect of the switch on the uptake, concentration in the blood an degradation of ivacaftor.

Kinetics of ivacaftor at Switch Orkambi Symkevi study - SOS

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2019-001314-41-NL
Enrollment
100
Registered
2019-05-06
Start date
2019-05-06
Completion date
Unknown
Last updated
2020-11-23

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

Conditions

Cystic fibrosis

Interventions

Trade Name: Orkambi: contains lumacaftor and ivacaftor Product Name: Orkambi Pharmaceutical Form: Coated tablet Trade Name: Symkevi Product Name: Symkevi Pharmaceutical Form: Coated tablet Trade Nam

Sponsors

None listed

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: • The subject is homozygous for the F508del mutation in the CFTR gene. • The subject is aged 18 years or older. • The subject used Orkambi continuous for at least a month before enrolling in the study. • The subject used Orkambi in a dose of twice-daily 2 tablets of 200/125 mg lum/iva. • The subject will switch from Orkambi therapy to Symkevi. • The subject will initiate Symkevi therapy with a dosage of once-daily 1 tablet of 100/150 mg TEZ/IVA and once-daily 1 tablet of 150 mg IVA • The subject has signed and dated a written informed consent. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 100 F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range 0

Exclusion criteria

Exclusion criteria: • The subject is deemed unfit to participate in this study by the treating physician. • The subject is experiencing an exacerbation needing treatment with IV antibiotics

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary study endpoint is the ivacaftor through concentration.;Secondary Objective: - tezacaftor and lumacaftor through concentrations - hydroxymethyl-ivacaftor and ivacaftor-carboxylate concentrations - ivacaftor, tezacaftor and lumacaftor concentration at T-max;Primary end point(s): - The primary study endpoint is the ivacaftor through concentration.;Timepoint(s) of evaluation of this end point: After at least one month of treatment with Orkambi, just before subject is supposed to take the next morning dose Orkambi After at least one month of treatment with Symkevi, just before subject is supposed to take the next morning dose Symkevi

Secondary

MeasureTime frame
Secondary end point(s): - tezacaftor and lumacaftor through concentrations - hydroxymethyl-ivacaftor and ivacaftor-carboxylate concentrations - ivacaftor, tezacaftor and lumacaftor concentration at T-max;Timepoint(s) of evaluation of this end point: After at least one month of treatment with Orkambi, 3-5 hours after subject has taken morning dose Orkambi After at least one month of treatment with Symkevi, 3-5 hours after subject has taken morning dose Symkevi

Countries

Netherlands

Outcome results

None listed

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