This is a Phase IIa, multi-center, randomized, double-blind, placebo-controlled, parallel-group study to evaluate 4 different doses of GLPG2222 administered for 4 weeks to adult subjects with a confirmed diagnosis of CF and homozygous for the F508del Cystic Fibrosis Transmembrane conductance Regulator (CFTR) mutation.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
59
Oral tablet(s) containing GLPG2222
Oral tablet(s) containing GLPG2222
Matching oral tablet(s) containing placebo
Child Health Research Unit at UAB
Chatom, Alabama, United States
University of Arkansas for medical Sciences
Number of Participants With Treatment-Emergent Adverse Events
Number of participants with any treatment-emergent adverse events (TEAEs) and serious or treatment-related TEAEs, as well as number of patients with TEAEs by worst intensity reported (mild, moderate, or severe).
Time frame: First administration (Day 1) through Follow-up (Day 43)
Mean Change From Baseline in Sweat Chloride Concentration at Day 29
Two sweat collections, one from each arm, were obtained. Mean sweat chloride concentration was determined from both arms and measured as millimoles per liter (mmol/L). Baseline was defined as the predose value on Day 1 (or the last non-missing predose measurement).
Time frame: Prior to dosing on Days 1 and 29, or at early discontinuation
Mean Change From Baseline in Percent (%) Predicted FEV1 (%FEV1) at Day 29
Percent predicted FEV1 for age, gender, and height was determined from standardized spirometry assessments and estimated using the 2012 Global Lungs Initiative equation. Baseline was defined as the last non-missing predose assessment on Day 1.
Time frame: Predose and between 1 and 2 hours postdose on Days 1 and 29, or at early discontinuation
Mean Change From Baseline in the Respiratory Domain of the Cystic Fibrosis Questionnaire-Revised (CFQ-R) at Day 29
The CFQ-R is a validated participant-reported outcome measuring health-related quality of life for participants with cystic fibrosis. The respiratory domain assessed respiratory symptoms (for example, coughing, congestion, wheezing), derived from Questions 40, 41, 42, 45, and 46 if at least 50% of the questions had non-missing data. The scale score ranged from 0-100; higher scores indicated fewer symptoms and better health-related quality of life with a negative change indicating a worsening of symptoms. A change of 4 is considered clinically relevant.
Time frame: Prior to dosing on Days 1 and 29, or at early discontinuation
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Oral tablet(s) containing GLPG2222
Oral tablet(s) containing GLPG2222
Little Rock, Arkansas, United States
Central Florida Pulmonary Group
Orlando, Florida, United States
Cystic Fibrosis Center of Chicago
Glenview, Illinois, United States
Maine Medical Center
Portland, Maine, United States
John Hopkins University School of Medicine
Baltimore, Maryland, United States
Medical University of South Carolina
Charleston, South Carolina, United States
UZ Antwerpen
Antwerp, Belgium
UZ Brussel
Brussels, Belgium
UZ Gent
Ghent, Belgium
...and 13 more locations
Mean Maximum Observed Plasma Concentration (Cmax; Nanograms Per Milliliter [mg/mL]) of GLPG2222
Maximum concentration of GLPG2222 after multiple dosing (ng/ML), obtained directly from the observed concentration versus time data. All pharmacokinetic (PK) parameters were determined from Day 15; Day 29 data were determined if the participant was not available for full PK profiling on Day 15.
Time frame: Day 15 (predose and 0.5, 1, 2, 3, 4, 6, and 8 hours postdose) and prior to dosing on Day 29
Mean GLPG2222 Plasma Concentration Observed at Predose (Ctrough; ng/mL)
Plasma concentration of GLPG2222 observed at pre-dose (ng/mL), obtained directly from the observed concentration versus time data. Ctrough was calculated using both Day 15 and Day 29 PK data.
Time frame: Days 15 and 29 (predose)
Median Time to Occurrence of GLPG2222 Cmax (Tmax; Hours [h])
Time of occurrence of maximum concentration of GLPG2222 after multiple dosing (h), obtained directly from the observed concentration versus time data. All PK parameters were determined from Day 15; Day 29 data were determined if the participant was not available for full PK profiling on Day 15.
Time frame: Day 15 (predose and 0.5, 1, 2, 3, 4, 6, and 8 hours postdose) and prior to dosing on Day 29
Mean Area Under the Concentration-Time Curve From Time 0 up to 24 Hours Following Multiple Dosing (AUC[0-t]; ng.h/mL) of GLPG2222
Area under the concentration-time curve from time 0 up to 24 hours following multiple dosing (ng.h/mL), calculated by linear up/log down trapezoidal summation. All PK parameters were determined from Day 15; Day 29 data were determined if the participant was not available for full PK profiling on Day 15.
Time frame: Day 15 (predose and 0.5, 1, 2, 3, 4, 6, and 8 hours postdose) and prior to dosing on Day 29