The primary objective was: \- to assess the bioequivalence of a single dose (two inhalations) of the test product compared to the reference product, with and without charcoal blockade. The secondary objectives were: * to assess the pharmacokinetic profile of budesonide and formoterol in plasma after a single dose (two inhalations) of the test product and the reference product, with and without charcoal blockade. * to assess the safety and tolerability of the test product and the reference product, with and without charcoal blockade.
This was a single center, open label, randomized, five-period crossover, single-dose study in healthy volunteers aged 18 to 45 years. A total of 90 volunteers were enrolled, with 9 subjects in each of the 10 treatment sequences. The study consisted of 5 treatment periods, each lasting approximately 48h, separated by a washout period of a minimum of 5 days. RS01 and/or Symbicort Turbohaler device use training was provided on Day -1 and Day 1 of each treatment period. Subjects were screened for eligibility to participate in the study -28 to -2 days prior to the first treatment period, and were randomized to one of 10 treatment sequencies containing the following 5 treatment arms on Day 1 of the first treatment period: Treatment A: Z7200 without oral activated charcoal\* Treatment B1: Symbicort 1 without oral activated charcoal\* Treatment B2: Symbicort 2 without oral activated charcoal\* Treatment C: Z7200 with oral activated charcoal\*\* Treatment D: Symbicort with oral activated charcoal\*\* Subjects were admitted to the clinical unit at 8.00 on the morning of Day -1, and were dosed on the morning of Day 1 following an overnight fast (minimum of 8h). On Day 2, following collection of the 24-h PK blood sample, subjects were discharged. \* Subjects who received treatments A, B1 and B2 rinsed their mouth vigorously with 50 mL water for 3 to 5 sec immediately after the second inhalation. \*\* A charcoal blockade was used to prevent absorption from oropharyngeal and GI tract, in order to assess the pulmonary deposition of budesonide and formoterol, with periods performed without a charcoal blockade allowing the assessment of the total systemic exposure to the drug.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
160 ug budesonide and 4.5 ug formoterol fumarate dihydrate, administered as two inhalations (2 x Z7200 capsules) of budesonide 80 ug/inhalation and formoterol 2.25 ug/inhalation, using an RS01 inhaler (Treatment A).
320 ug budesonide and 9 ug formoterol fumarate dihydrate, administered as two inhalations of budesonide 160 ug/inhalation and formoterol 4.5 ug/inhalation (Treatments B1 and B2).
160 ug budesonide and 4.5 ug formoterol fumarate dihydrate, administered as two inhalations (2 x Z7200 capsules) of budesonide 80 ug/inhalation and formoterol 2.25 ug/inhalation, using an RS01 inhaler with a charcoal blockade (Treatment C).
Quotient Clinical Ltd
Ruddington, United Kingdom
AUC0-t of Budesonide With and Without Charcoal Blockade
Area under the plasma concentration-time curve from time zero to the last detectable level calculations were performed using the linear trapezoidal rule. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
AUC0-t of Formoterol With and Without Charcoal Blockade
Area under the plasma concentration-time curve from time zero to the last detectable level calculations were performed using the linear trapezoidal rule. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
Cmax of Budesonide With and Without Charcoal Blockade
Maximum plasma level of budesonide with and without charcoal blockade. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
Cmax of Formoterol With and Without Charcoal Blockade
Maximum plasma level of formoterol with and without charcoal blockade. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
AUC0-30 of Budesonide With and Without Charcoal Blockade.
Area under the plasma concentration-time curve from time zero to 30 minutes calculations were performed using the linear trapezoidal rule. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
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Masking
NONE
Enrollment
90
320 ug budesonide and 9 ug formoterol fumarate dihydrate, administered as two inhalations of budesonide 160 ug/inhalation and formoterol 4.5 ug/inhalation from a Symbicort Turbohaler, with charcoal blockade (Treatment D).
Time frame: 0-30 min (0, 2, 5, 10, 15, 20, and 30 min)
AUC0-30 of Formoterol With and Without Charcoal Blockade.
Area under the plasma concentration-time curve from time zero to 30 minutes calculations were performed using the linear trapezoidal rule. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-30 min (0, 2, 5, 10, 15, 20, and 30 min)
AUC0-∞ of Budesonide With and Without Charcoal Blockade
Area under the plasma concentration-time curve from time zero to infinity calculations were performed using the linear trapezoidal rule. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
AUC0-∞ of Formoterol With and Without Charcoal Blockade
Area under the plasma concentration-time curve from time zero to infinity calculations were performed using the linear trapezoidal rule. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
Tmax for Budesonide With and Without Charcoal Blockade
Time at which the maximum plasma level (Cmax) occurred with and without charcoal blockade. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
Tmax for Formoterol With and Without Charcoal Blockade
Time at which the maximum plasma level (Cmax) occurred with and without charcoal blockade. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
t1/2 for Budesonide With and Without Charcoal Blockade
Apparent elimination half-life calculated as 0.693/lambda zeta, with and without charcoal blockade. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
t1/2 for Formoterol With and Without Charcoal Blockade
Apparent elimination half-life calculated as 0.693/lambda zeta, with and without charcoal blockade. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.
Time frame: 0-24h (0, 2, 5, 10, 15, 20, 30, 45, 60, 90, 120, 180, 240, 360, 480, 600, 720, and 1440 min)
Change From Baseline in Forced Expiratory Volume in 1 Second (FEV1)
FEV1 refers to the volume of air that an individual can exhale during a forced breath in 1 second. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together. and Symbicort 2, together. Please note that, within the safety population, 90 subjects received Treatment B. This would mean that theorically 180 participants received Symbicort 1 and Symbicort 2, together. But some subjects were excluded from the statistical analysis for various reasons so that the total number included in the statistical anlysis for treatment B is 174.
Time frame: At 75 min (1.25 hours) post-dose
Change From Baseline in the Ratio of Forced Expiratory Volume in 1 Second to Forced Vital Capacity (FEV1/FVC)
FVC = Forced vital capacity. It is the full amount of air that can be exhaled with effort in a complete breath. FEV1/FVC = Tiffenau-Pinelli Index. This parameter represents the measurement of the amount of air an individual can forcefully exhale from his/her lungs. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together. Please note that, within the safety population, 90 subjects received Treatment B. This would mean that theorically 180 participants received Symbicort 1 and Symbicort 2, together. But 6 subjects were excluded from the statistical analysis for various reasons so that the total number included in the statistical anlysis for treatment B is 174.
Time frame: At 75 min (1.25 hours) post-dose
Change From Baseline in Peak Expiratory Flow Rate (PEFR)
PEFR is the highest rate at which gases can be expelled from the lungs via an open mouth. Its measurement is a simple procedure in which an individual takes a full inspiration and blows out as forcibly as possible into an instrument called a peak flow meter, which measures the maximal gas flow in an exhalation in liters per minute. Participants for the Treatment B are counted for both Symbicort 1 and Symbicort 2, together.Please note that, within the safety population, 90 subjects received Treatment B. This would mean that theorically 180 participants received Symbicort 1 and Symbicort 2, together. But 6 subjects were excluded from the statistical analysis for various reasons so that the total number included in the statistical anlysis for treatment B is 174.
Time frame: At 75 min (1.25 hours) post-dose