Open-label study to investigate the effects of Orkambi in CF patients homozygous for the F508del mutation by functional respiratory imaging. Primary endpoints in this study are the changes in Specific airway volumes (siVaw) and Specific Airway resistance (siRaw). A total of 20 ORKAMBI-naive patients with Cystic Fibrosis, homozygous for the F508del mutation will be included in this open label study and will be followed through 3 months of treatment. The treatment will be started after all assessments are performed at visit 1. After the start of the treatment some baseline measurements will be repeated throughout the 3-month treatment period. The patient will be asked to visit the hospital monthly. All study visits should be scheduled around the same time.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
12
Open label of Orkambi treatment during 3 months
Antwerp University Hospital
Edegem, Belgium
Change in specific image-based airway resistance (siRaw)
Change in CFD-based airway resistance normalized by the lung volume
Time frame: baseline and after three months of therapy
Change in specific image-based airway volumes (siVaw)
change in CT-based airway volumes normalized by the lung volume
Time frame: baseline and after three months of therapy
Internal Airflow Distribution
calculated using thorax HRCT
Time frame: baseline and after three months of therapy
Air Trapping
calculated using thorax HRCT
Time frame: baseline and after three months of therapy
Airway Wall Volume
calculated using thorax HRCT
Time frame: baseline and after three months of therapy
Aerosol Deposition
calculated using thorax HRCT
Time frame: baseline and after three months of therapy
Dynamic lung volumes
calculated using spirometry
Time frame: baseline and after three months of therapy
Static lung volumes
calculated using body plethysmography
Time frame: baseline and after three months of therapy
airway resistances
calculated using body plethysmography
Time frame: baseline and after three months of therapy
Lung clearance index
Marker of lung ventilation inhomogeneity
Time frame: baseline and after three months of therapy
6-minute walking test
Marker of fitness for daily activities
Time frame: baseline and after three months of therapy
Sweat chloride test
Chloride values in sweat chloride test
Time frame: baseline and after three months of therapy
CFQ-R
standardized measures of quality of life will be administered to subject and to parents of subjects under 18 years of age. Disease-specific instrument designed to measure impact on overall health, daily life, perceived well-being and symptoms. Developed specifically for use in patients with a diagnosis of cystic fibrosis. Scores range from 0 to 100, with higher scores indicating better health.
Time frame: baseline and after three months of therapy
Digital lung auscultation
Digital analysis of digital lung sounds obtained by a digital stethoscope
Time frame: baseline and after three months of therapy
Exacerbation frequency
Number of cystic fibrosis exacerbations
Time frame: baseline and after three months of therapy
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