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Pharmacokinetics and Pharacodynamics of GW642444 in Paedetric Subjects

A Randomized, Double-blind, Placebo-controlled, Two-way Crossover 7-day Study to Investigate the Safety, Tolerability, Pharmacodynamics and Pharmacokinetics of Repeat Dose Inhaled GW642444 25 μg (Micrograms) in Children Aged 5-11 Years With Persistent Asthma.

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01453296
Enrollment
28
Registered
2011-10-17
Start date
2010-08-31
Completion date
2011-04-30
Last updated
2017-01-13

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

Conditions

Asthma

Keywords

Asthma, Tolerability, Safety, Pharmacokinetics, GW642444

Brief summary

This study will investigate the effect of dosing paedeatric asthmatic subjects with GW642444, an orally inhaled long-acting agonist of the β2-adrenoceptor.

Detailed description

This study will investigate the effect of dosing with 25 μg GW642444, an orally inhaled long-acting agonist of the β2-adrenoceptor, in asthmatic subjects aged 5 to 11. GW642444 is currently under development as the long-acting beta-agonist component of a combination product containing an inhaled corticosteroid and a longacting beta-agonist. Subjects will receive a single dose via a novel dry powder inhaler, then 7 days once-daily repeat dosing following a washout period. The study will be a randomized two-way crossover, with a placebo control. Approximately 26 subjects will be recruited to this study, with the aim that 20 will complete the study. Safety, tolerability, pharmacokinetics and glucose and potassium levels will be investigated.

Interventions

GW642444 25 μg; Novel dry powder inhaler

DRUGPlacebo

Matching placebo; Novel dry powder inhaler

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
5 Years to 11 Years
Healthy volunteers
No

Inclusion criteria

* Male and pre-menarchial female subjects aged 5-11 years on the last planned treatment day are eligible for this study. Pre-menarchial females are defined as any female who has yet to begin menses and is considered Tanner Stage 2 or less. * Diagnosis of asthma at least 6 months prior to screening. * Patients must be controlled on their existing asthma treatment at Screening as defined by a Childhood Asthma Control Test score of \>19 and PEF (Peak Expiratory Flow) \>75 % predicted. * Subjects must be taking a stable regimen of fluticasone propionate (≤200 μg (micrograms) twice daily or equivalent) and short acting beta-agonist inhaler on an as-need basis for at least 4 weeks prior to screening. * Apart from asthma, eczema and rhinitis, subjects should be healthy and suffer from no other significant medical conditions. * Subjects must weigh at least 15 kg (kilograms). * Subjects must demonstrate ability to accept and effectively use the GW642444 device using the demonstration kits provided to the site. * The subject and parent or guardian are able to understand and comply with protocol requirements, instructions, and protocol-stated restrictions. The parent or guardian must have the ability to read, write and record diary information collected throughout the study. The parent or guardian must also have the ability to manage study drug administration and PEF assessments. * At least one parent or guardian has signed and dated the written informed consent prior to admission to the study. This will be accompanied by informed assent from the subject.

Exclusion criteria

* Subjects currently receiving (or have received within 4 weeks of screening) any of the following asthma therapies: theophyllines, long-acting inhaled beta-agonists, oral beta-agonist. * Subjects who have changed their asthma medication within 4 weeks of screening. * Clinical visual evidence of oral candidiasis at screening. * Any clinically relevant abnormality identified on the screening medical assessment * Any medical condition or circumstance making the subject unsuitable for participation in the study (e.g. history of life-threatening asthma) * Asthma exacerbation requiring systemic corticosteroids (oral, intramuscular, intravenous) or Emergency Room attendance within 3 months or asthma exacerbation requiring hospitalization within 6 months prior to the screening visit. * Culture-documented or suspected bacterial or viral infection of the upper or lower respiratory tract which is not resolved within 4 weeks of the screening visit. * Any adverse reaction including immediate or delayed hypersensitivity to any betaagonist therapy. * Known or suspected sensitivity to the constituents of the novel dry powder inhaler (i.e., lactose or magnesium stearate), for example, history of severe milk protein allergy. * The parent or guardian has history of psychiatric disease, intellectual deficiency, substance abuse, or other condition (e.g., inability to read, comprehend or write) which will limit the validity of consent to participate in this study. * A subject will not be eligible for this study if he/she is an immediate family member of the participating Investigator, sub-Investigator, study coordinator, or employee of the participating Investigator. * Children who are wards of the state or government. * Evidence of clinically significant abnormality in the 12-lead ECG (electrocardiogram) at Screening

Design outcomes

Primary

MeasureTime frameDescription
Weighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)The electrocardiographic (ECG) parameter QT duration corrected using Fridericia's formula (QTcF) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. Actual relative times were used for the calculation except where actual times were missing. If any actual times were missing, planned relative times were used for these observations. For 0-8 hr parameters, treatment, period, participant Baseline, and period Baseline were fitted as fixed effects, and participant was fitted as a random effect. For 0-2 hr parameters, treatment, period, day (1 and 14), participant Baseline, period Baseline, and treatment\*day interaction were fitted as fixed effects, and participant was fitted as a random effect. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).
Reticulocyte and Red Blood Cell (RBC) Values at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of reticulocytes and RBCs at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Hematocrit Value at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of hematocrit at Day 14 of the respective treatment period. Hematocrit is a measure of the percentage of the volume of the whole blood that is composed of red blood cells, as determined by separation of red blood cells from the plasma (usually by centrifugation). Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Mean Corpuscle Volume (MCV) Value at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of MCV at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Mean Corpuscle Hemoglobin (MCH) Value at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of MCH at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Alanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of ALT, ALP, AST, and GGT at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Albumin and Total Protein Values at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of albumin and total protein at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Calcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of calcium, chloride, carbon dioxide content/bicarbonate (CO2/BI), glucose, potassium, sodium, and urea/BUN at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Total Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of total bilirubin, direct bilirubin, creatinine, and uric acid at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Peak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1, Day 8, and Day 14 of the respective treatment period (up to Study Day 49)Peak Expiratory Flow (PEF) is defined as the maximum airflow during a forced expiration beginning with the lungs fully inflated. PEF is calculated as the maximum of three readings taken at each timepoint for each participant. Baseline is defined as the pre-dose measurement at Day 1 for the respective period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).
Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1, Day 8, and Day 14 of the respective treatment period (up to Study Day 49)SBP and DBP were measured at Day 1, Day 8, and Day 14 of the respective treatment period. PD=post-dose. Baseline is defined as the pre-dose measurement at Day 1 for the respective period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).
Maximum Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)Heart rate (HR) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).
Weighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)Heart rate (HR) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. Weighted means were derived using the linear trapezoidal rule. Actual relative times were used for the calculation except where actual times were missing. If any actual times were missing, planned relative times were used for these observations. For 0-8 hr parameters, treatment, period, participant Baseline, and period Baseline were fitted as fixed effects, and participant was fitted as a random effect. For 0-2 hr parameters, treatment, period, day (1 and 14), participant Baseline, period Baseline, and treatment\*day interaction were fitted as fixed effects, and participant was fitted as a random effect. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).
Maximum QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)The electrocardiographic (ECG) parameter QT duration corrected using Fridericia's formula (QTcF) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. For 0-8 hr parameters, treatment, period, participant Baseline, and period Baseline were fitted as fixed effects, and participant was fitted as a random effect. For 0-2 hr parameters, treatment, period, day (1 and 14), participant Baseline, period Baseline, and treatment\*day interaction were fitted as fixed effects, and participant was fitted as a random effect. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).
Number of Participants With Any Adverse Event (AE) or Any Serious Adverse Event (SAE) During the Treatment PeriodFrom the start of study medication until Week 11 (Visit 8)/Early WithdrawalAn AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. A serious adverse event (SAE) is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, or is a congenital anomaly/birth defect. Medical or scientific judgment should be exercised in deciding whether reporting is appropriate in other situations. Refer to the General AE/SAE module for a complete list of AEs and SAEs.
Basophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of basophils, eosinophils, lymphocytes, monocytes, total neutrophils, platelets, and white blood cell (WBC) count at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Values at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood samples were collected for the measurement of hemoglobin and MCHC at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Secondary

MeasureTime frameDescription
Cmax on Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Cmax is defined as the maximum observed concentration on Day 14 of the respective treatment period. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period.
Tmax, t1/2, and t at Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)tmax is defined as the time to reach the observed maximum concentration, t1/2 is defined as the time required to reduce the plasma concentration to one half its initial value, and t is defined as the time of the last observed quantifiable concentration on Day 14 of the respective treatment period. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period.
Blood Glucose and Potassium on Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Blood glucose and potassium values were measured on Day 14 of the respective treatment period. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period. . Weighted means were derived using the linear trapezoidal rule. Actual relative times were used for the calculation except where actual times were missing. If any actual times were missing, planned relative times were used for these observations. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg. Treatment and period were fitted as fixed effects and participant was fitted as a random effect.
Average Oropharyngeal Cross-sectional Area on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)During the pharyngometry assessment, participants inhaled through a wavetube, which had a mouthpiece with the same dimensions as the mouthpiece on the dry powder inhaler used for the study. This technique was used to measure the size of the throat and mouth (oropharynx) in the form of pharyngograms. Pharyngometry data were recorded for each day (Day 1 and Day 14 of the respective treatment period) using the mean of four measurements (pharyngograms), and the average oropharyngeal cross-sectional area was calculated.
Distance of Assessment on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)During the pharyngometry assessment, participants inhaled through a wavetube, which had a mouthpiece with the same dimensions as the mouthpiece on the dry powder inhaler used for this study. This technique was used to measure the size of the throat and mouth (oropharynx) in the form of pharyngograms. Distance of assessment is defined as the distance (length measured in centimeters \[cm\]) estimated to be from the lips to the larynx. Pharyngometry data were recorded for each day (Days 1 and 14 of the respective treatment period) using the mean of four measurements (pharyngograms), and the average oropharyngeal cross-sectional area was calculated.
Oropharyngeal Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)During the pharyngometry assessment, participants inhaled through a wavetube, which had a mouthpiece with the same dimensions as the mouthpiece on the dry powder inhaler used for this study. This technique was used to measure the size of the throat and mouth (oropharynx) in the form of pharyngograms. Oropharyngeal volume is defined as the volume (centimeters cubed \[cm\^3\]) of the mouth and throat estimated to be from the lips to the larynx. Pharyngometry data were recorded for each day (Days 1 and 14 of the respective treatment period) using the mean of four measurements (pharyngograms), and the average oropharyngeal cross-sectional area was calculated.
Average Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Average flow rate is defined as the average inspiratory flow rate (Liters \[L\]/min) across the inhalation profile when inhaling across the resistance of the inhaler. PIFR is defined as the Peak Inspiratory Flow Rate (L/min) of the inhalation profile when inhaling across the resistance of the inhaler.The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was used for each day (Days 1 and 14 of the respective treatment period), and the average flow rate and PIFR were determined. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Inhalation Time on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Inhalation time is defined as the duration of the inhalation(s) when inhaling across the resistance of the inhaler. The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was used for each day (Days 1 and 14 of the respective treatment period), and the inhalation time was determined. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Inhaled Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Inhaled volume is defined as the volume of air (Liters) inhaled during the inhalation across the resistance of the inhaler. The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was used for each day (Days 1 and 14 of the respective treatment period), and the inhalaled volume was determined. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Peak Pressure Drop on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Peak pressure drop is defined as the maximum pressure drop (kilopascal \[kPa\]) achieved during inhalation across the resistance of the inhaler. The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was calculated for each day (Days 1 and 14 of the respective treatment period), and used for subsequent modeling and prediction of dose emission attributes. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.
Total Emitted Dose (TED) on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)The total emitted dose (TED) is defined as the mass (micrograms) of the nominal dose that passes beyond the throat. The recorded inhalation profiles of the participants and the mouth-throat (oropharyngeal) models of the sizes that approximated to pharyngometry measurements of the participants were used in conjunction with the electronic Lung (eLung) for in vitro assessment. The eLung is a breathing simulator that replicates the selected inhalation profile with an active inhaler placed at the lips end of the selected ororpharyngeal model. After the dose is emitted from the inhaler, the analysis and assay of throat deposition and material passing beyond the throat was used to derive the nominal, minimum, and maximum predicted total emitted dose.
Ex-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment PeriodDay 1 and Day 14 of the respective treatment period (up to Study Day 49)The ex-throat dose (ETD) and the nominal ETD is the mass (micrograms) of active investigational material that passes beyond the throat, nominal being the mean.The recorded inhalation profiles of the participants and the mouth-throat (oropharyngeal) models of the sizes that approximated to pharyngometry measurements of the participants were used in conjunction with the electronic Lung (eLung) for in vitro assessment. The eLung is a breathing simulator that replicates the selected inhalation profile with an active inhaler placed at the lips end of the selected ororpharyngeal model. After the dose is emitted from the inhaler, the analysis and assay of throat deposition and material passing beyond the throat was used to derive the nominal, minimum, and maximum predicted ETD and ETD \<2 microns.
AUC(0-t) and AUC(0-8) on Day 14 of the Respective Treatment PeriodDay 14 of the respective treatment period (up to Study Day 49)Area under the concentration-time (AUC) curve from time zero (pre-dose) to the last time AUC(0-t) and from time zero to 8 hours AUC(0-8) of quantifiable concentration of VI on Day 14 of the respective treatment period was measured. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period. Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the Pharmacokinetic Population.

Countries

United States

Participant flow

Recruitment details

Participants were enrolled into one of two cohorts based upon age; the younger cohort was enrolled after a review of the safety/pharmacokinetic data of at least six participants from the older cohort. Each participant was assigned to treatment randomly; assignment was not to be influenced by whether participants were in Cohort 1 or Cohort 2.

Pre-assignment details

A Baseline assessment was carried out on Day 1 of the first treatment period. Participants were then randomized to one of the two possible treatment sequences (Vilanterol \[VI\] 25 micrograms \[µg\] followed by matching Placebo; matching placebo followed by VI 25 µg) in a 1:1 ratio in an AB or BA sequence.

Participants by arm

ArmCount
VI 25 µg/Placebo or Placebo/VI 25 µg
Participants received either vilanterol (VI) 25 micrograms (µg) or matching placebo in the first of two 14-day treatment periods, followed by a repeat dose of the other therapy (the therapy not received in the first treatment period) in the second 14-day treatment period. Inhaled VI 25 µg or matching placebo was administered once daily in the morning (Day 1 to Day 14) via the Dry Powder Inhaler. The washout period between the treatment periods was at least 7 days.
28
Total28

Withdrawals & dropouts

PeriodReasonFG000FG001
Treatment Period 1Adverse Event01
Treatment Period 1Met Protocol-Defined Stopping Criteria10
Treatment Period 2Adverse Event10
Treatment Period 2Withdrawal by Subject10

Baseline characteristics

CharacteristicVI 25 µg/Placebo or Placebo/VI 25 µg
Age, Continuous8.0 Years
STANDARD_DEVIATION 1.9
Gender
Female
10 Participants
Gender
Male
18 Participants
Race/Ethnicity, Customized
African American/African Heritage
5 Participants
Race/Ethnicity, Customized
Mixed Race
1 Participants
Race/Ethnicity, Customized
White - White/Caucasian/European Heritage
22 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
6 / 269 / 27
serious
Total, serious adverse events
0 / 260 / 27

Outcome results

Primary

Alanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of ALT, ALP, AST, and GGT at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population, Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodALT, n=22, 2513.9 International units per liter (IU/L)Standard Deviation 4.21
PlaceboAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodALP, n=22, 25260.5 International units per liter (IU/L)Standard Deviation 109.65
PlaceboAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodAST, n=22, 2427.7 International units per liter (IU/L)Standard Deviation 6.11
PlaceboAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodGGT, n=22, 2514.1 International units per liter (IU/L)Standard Deviation 4.12
VI 25 µgAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodGGT, n=22, 2513.6 International units per liter (IU/L)Standard Deviation 3.51
VI 25 µgAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodALT, n=22, 2513.5 International units per liter (IU/L)Standard Deviation 3.56
VI 25 µgAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodAST, n=22, 2425.5 International units per liter (IU/L)Standard Deviation 4.52
VI 25 µgAlanine Amino Transferase (ALT), Alkaline Phosphatase (ALP), Aspartate Amino Transferase (AST), and Gamma Glutamyl Transferase (GGT) Values at Day 14 of the Respective Treatment PeriodALP, n=22, 25273.4 International units per liter (IU/L)Standard Deviation 103.51
Primary

Albumin and Total Protein Values at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of albumin and total protein at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboAlbumin and Total Protein Values at Day 14 of the Respective Treatment PeriodAlbumin, n=22, 2542.8 Grams per literStandard Deviation 2.95
PlaceboAlbumin and Total Protein Values at Day 14 of the Respective Treatment PeriodTotal protein, n=22, 2567.9 Grams per literStandard Deviation 4.82
VI 25 µgAlbumin and Total Protein Values at Day 14 of the Respective Treatment PeriodAlbumin, n=22, 2543.2 Grams per literStandard Deviation 1.96
VI 25 µgAlbumin and Total Protein Values at Day 14 of the Respective Treatment PeriodTotal protein, n=22, 2568.6 Grams per literStandard Deviation 3.16
Primary

Basophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of basophils, eosinophils, lymphocytes, monocytes, total neutrophils, platelets, and white blood cell (WBC) count at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodLymphocytes, n=24, 252.404 10^9 cells per liter (GI/L)Standard Deviation 0.8652
PlaceboBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodTotal neutrophils, n=24, 253.354 10^9 cells per liter (GI/L)Standard Deviation 1.3054
PlaceboBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodEosinophils, n=24, 250.276 10^9 cells per liter (GI/L)Standard Deviation 0.3002
PlaceboBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodPlatelets, n=23, 25280.7 10^9 cells per liter (GI/L)Standard Deviation 54.11
PlaceboBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodMonocytes, n=24, 250.268 10^9 cells per liter (GI/L)Standard Deviation 0.131
PlaceboBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodWBCs, n=24, 256.32 10^9 cells per liter (GI/L)Standard Deviation 1.808
PlaceboBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodBasophils, n=24, 250.021 10^9 cells per liter (GI/L)Standard Deviation 0.0145
VI 25 µgBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodWBCs, n=24, 256.30 10^9 cells per liter (GI/L)Standard Deviation 1.64
VI 25 µgBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodBasophils, n=24, 250.034 10^9 cells per liter (GI/L)Standard Deviation 0.0185
VI 25 µgBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodEosinophils, n=24, 250.348 10^9 cells per liter (GI/L)Standard Deviation 0.3458
VI 25 µgBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodLymphocytes, n=24, 252.419 10^9 cells per liter (GI/L)Standard Deviation 0.8729
VI 25 µgBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodMonocytes, n=24, 250.376 10^9 cells per liter (GI/L)Standard Deviation 0.1419
VI 25 µgBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodTotal neutrophils, n=24, 253.127 10^9 cells per liter (GI/L)Standard Deviation 0.9625
VI 25 µgBasophil, Eosinophil, Lymphocyte, Monocyte, Total Neutrophil, Platelet, and White Blood Cell Count Values at Day 14 of the Respective Treatment PeriodPlatelets, n=23, 25279.4 10^9 cells per liter (GI/L)Standard Deviation 54.71
Primary

Calcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of calcium, chloride, carbon dioxide content/bicarbonate (CO2/BI), glucose, potassium, sodium, and urea/BUN at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodCO2 content/bicarbonate, n=22, 2417.6 Millimoles per liter (mmol/L)Standard Deviation 2.3
PlaceboCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodPotassium, n=22, 244.30 Millimoles per liter (mmol/L)Standard Deviation 0.408
PlaceboCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodChloride, n=22, 25105.5 Millimoles per liter (mmol/L)Standard Deviation 3.9
PlaceboCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodSodium, n=22, 25137.7 Millimoles per liter (mmol/L)Standard Deviation 2.43
PlaceboCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodGlucose, n=22, 254.95 Millimoles per liter (mmol/L)Standard Deviation 0.51
PlaceboCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodUrea/BUN, n=22, 254.91 Millimoles per liter (mmol/L)Standard Deviation 1.368
PlaceboCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodCalcium, n=22, 242.327 Millimoles per liter (mmol/L)Standard Deviation 0.1357
VI 25 µgCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodUrea/BUN, n=22, 254.48 Millimoles per liter (mmol/L)Standard Deviation 1.15
VI 25 µgCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodCalcium, n=22, 242.359 Millimoles per liter (mmol/L)Standard Deviation 0.0666
VI 25 µgCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodChloride, n=22, 25105.1 Millimoles per liter (mmol/L)Standard Deviation 2.01
VI 25 µgCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodCO2 content/bicarbonate, n=22, 2418.1 Millimoles per liter (mmol/L)Standard Deviation 1.98
VI 25 µgCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodGlucose, n=22, 255.04 Millimoles per liter (mmol/L)Standard Deviation 0.513
VI 25 µgCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodPotassium, n=22, 244.33 Millimoles per liter (mmol/L)Standard Deviation 0.242
VI 25 µgCalcium, Chloride, Carbon Dioxide (CO2) Content/Bicarbonate, Glucose, Potassium, Sodium, and Urea/Blood Urea Nitrogen (BUN) Values at Day 14 of the Respective Treatment PeriodSodium, n=22, 25137.8 Millimoles per liter (mmol/L)Standard Deviation 2.12
Primary

Hematocrit Value at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of hematocrit at Day 14 of the respective treatment period. Hematocrit is a measure of the percentage of the volume of the whole blood that is composed of red blood cells, as determined by separation of red blood cells from the plasma (usually by centrifugation). Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed.

ArmMeasureValue (MEAN)Dispersion
PlaceboHematocrit Value at Day 14 of the Respective Treatment Period0.3948 proportion of 1Standard Deviation 0.0343
VI 25 µgHematocrit Value at Day 14 of the Respective Treatment Period0.3863 proportion of 1Standard Deviation 0.02617
Primary

Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Values at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of hemoglobin and MCHC at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboHemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Values at Day 14 of the Respective Treatment PeriodHemoglobin, n=24, 25133.0 Grams per liter (g/L)Standard Deviation 11.3
PlaceboHemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Values at Day 14 of the Respective Treatment PeriodMCHC, n=24, 25337.1 Grams per liter (g/L)Standard Deviation 5.5
VI 25 µgHemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Values at Day 14 of the Respective Treatment PeriodHemoglobin, n=24, 25130.7 Grams per liter (g/L)Standard Deviation 11.22
VI 25 µgHemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC) Values at Day 14 of the Respective Treatment PeriodMCHC, n=24, 25338.3 Grams per liter (g/L)Standard Deviation 11.6
Primary

Maximum Heart Rate at Day 1 and Day 14 of the Respective Treatment Period

Heart rate (HR) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboMaximum Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 maximum HR (0-2 hr), n=26, 2883.6 Beats per minuteStandard Error 1.44
PlaceboMaximum Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum HR (0-2 hr), n=24, 2684.3 Beats per minuteStandard Error 1.38
PlaceboMaximum Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum HR (0-8 hr), n=24, 2688.1 Beats per minuteStandard Error 1.45
VI 25 µgMaximum Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 maximum HR (0-2 hr), n=26, 2886.1 Beats per minuteStandard Error 1.4
VI 25 µgMaximum Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum HR (0-2 hr), n=24, 2685.0 Beats per minuteStandard Error 1.35
VI 25 µgMaximum Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum HR (0-8 hr), n=24, 2688.6 Beats per minuteStandard Error 1.41
95% CI: [-0.8, 5.7]
95% CI: [-2.4, 3.7]
95% CI: [-2.6, 3.6]
Primary

Maximum QTcF at Day 1 and Day 14 of the Respective Treatment Period

The electrocardiographic (ECG) parameter QT duration corrected using Fridericia's formula (QTcF) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. For 0-8 hr parameters, treatment, period, participant Baseline, and period Baseline were fitted as fixed effects, and participant was fitted as a random effect. For 0-2 hr parameters, treatment, period, day (1 and 14), participant Baseline, period Baseline, and treatment\*day interaction were fitted as fixed effects, and participant was fitted as a random effect. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboMaximum QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 maximum QTcF (0-2 hr), n=26, 28405.6 millisecondsStandard Error 2.29
PlaceboMaximum QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum QTcF (0-2 hr), n=24, 26406.1 millisecondsStandard Error 2.06
PlaceboMaximum QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum QTcF (0-8 hr), n=24, 26407.8 millisecondsStandard Error 1.87
VI 25 µgMaximum QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 maximum QTcF (0-2 hr), n=26, 28406.6 millisecondsStandard Error 2.22
VI 25 µgMaximum QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum QTcF (0-2 hr), n=24, 26407.7 millisecondsStandard Error 2
VI 25 µgMaximum QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 maximum QTcF (0-8 hr), n=24, 26409.2 millisecondsStandard Error 1.82
95% CI: [-4.5, 6.6]
95% CI: [-3.2, 6.3]
95% CI: [-3, 5.7]
Primary

Mean Corpuscle Hemoglobin (MCH) Value at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of MCH at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed.

ArmMeasureValue (MEAN)Dispersion
PlaceboMean Corpuscle Hemoglobin (MCH) Value at Day 14 of the Respective Treatment Period28.97 10^12 picograms (pg) per cellStandard Deviation 1.337
VI 25 µgMean Corpuscle Hemoglobin (MCH) Value at Day 14 of the Respective Treatment Period29.29 10^12 picograms (pg) per cellStandard Deviation 1.464
Primary

Mean Corpuscle Volume (MCV) Value at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of MCV at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed.

ArmMeasureValue (MEAN)Dispersion
PlaceboMean Corpuscle Volume (MCV) Value at Day 14 of the Respective Treatment Period86.0 10^15 femtoliters (fL) per cellStandard Deviation 4.08
VI 25 µgMean Corpuscle Volume (MCV) Value at Day 14 of the Respective Treatment Period86.6 10^15 femtoliters (fL) per cellStandard Deviation 3.59
Primary

Number of Participants With Any Adverse Event (AE) or Any Serious Adverse Event (SAE) During the Treatment Period

An AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. A serious adverse event (SAE) is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, or is a congenital anomaly/birth defect. Medical or scientific judgment should be exercised in deciding whether reporting is appropriate in other situations. Refer to the General AE/SAE module for a complete list of AEs and SAEs.

Time frame: From the start of study medication until Week 11 (Visit 8)/Early Withdrawal

Population: All Subjects Population: all participants who received at least one dose of study medication

ArmMeasureGroupValue (NUMBER)
PlaceboNumber of Participants With Any Adverse Event (AE) or Any Serious Adverse Event (SAE) During the Treatment PeriodAny AE6 Participants
PlaceboNumber of Participants With Any Adverse Event (AE) or Any Serious Adverse Event (SAE) During the Treatment PeriodAny SAE0 Participants
VI 25 µgNumber of Participants With Any Adverse Event (AE) or Any Serious Adverse Event (SAE) During the Treatment PeriodAny AE9 Participants
VI 25 µgNumber of Participants With Any Adverse Event (AE) or Any Serious Adverse Event (SAE) During the Treatment PeriodAny SAE0 Participants
Primary

Peak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment Period

Peak Expiratory Flow (PEF) is defined as the maximum airflow during a forced expiration beginning with the lungs fully inflated. PEF is calculated as the maximum of three readings taken at each timepoint for each participant. Baseline is defined as the pre-dose measurement at Day 1 for the respective period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).

Time frame: Day 1, Day 8, and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1, Baseline, n=26, 28230.6 liters/minuteStandard Deviation 72.55
PlaceboPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1, 20 minutes post-dose, n=26, 28237.5 liters/minuteStandard Deviation 69.65
PlaceboPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8, Pre-dose, n=26, 28232.1 liters/minuteStandard Deviation 64.76
PlaceboPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8, 20 minutes post-dose, n=25, 28233.8 liters/minuteStandard Deviation 220
PlaceboPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14, Pre-dose, n=24, 26240.3 liters/minuteStandard Deviation 75.9
PlaceboPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14, 20 minutes post-dose, n=24, 26243.3 liters/minuteStandard Deviation 75.18
VI 25 µgPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14, Pre-dose, n=24, 26239.0 liters/minuteStandard Deviation 72.02
VI 25 µgPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1, Baseline, n=26, 28233.0 liters/minuteStandard Deviation 68.55
VI 25 µgPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8, 20 minutes post-dose, n=25, 28240.7 liters/minuteStandard Deviation 65.66
VI 25 µgPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1, 20 minutes post-dose, n=26, 28245.6 liters/minuteStandard Deviation 73.47
VI 25 µgPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14, 20 minutes post-dose, n=24, 26248.1 liters/minuteStandard Deviation 76.2
VI 25 µgPeak Expiratory Flow on Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8, Pre-dose, n=26, 28228.8 liters/minuteStandard Deviation 64.42
Primary

Reticulocyte and Red Blood Cell (RBC) Values at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of reticulocytes and RBCs at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboReticulocyte and Red Blood Cell (RBC) Values at Day 14 of the Respective Treatment PeriodReticulocytes, n=24, 250.05010 10^12 cells per liter (TI/L)Standard Deviation 0.020696
PlaceboReticulocyte and Red Blood Cell (RBC) Values at Day 14 of the Respective Treatment PeriodRBCs, n=24, 254.60 10^12 cells per liter (TI/L)Standard Deviation 0.374
VI 25 µgReticulocyte and Red Blood Cell (RBC) Values at Day 14 of the Respective Treatment PeriodReticulocytes, n=24, 250.05275 10^12 cells per liter (TI/L)Standard Deviation 0.024571
VI 25 µgReticulocyte and Red Blood Cell (RBC) Values at Day 14 of the Respective Treatment PeriodRBCs, n=24, 254.47 10^12 cells per liter (TI/L)Standard Deviation 0.339
Primary

Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment Period

SBP and DBP were measured at Day 1, Day 8, and Day 14 of the respective treatment period. PD=post-dose. Baseline is defined as the pre-dose measurement at Day 1 for the respective period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).

Time frame: Day 1, Day 8, and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 SBP, 30 minutes PD, n=25, 28101.7 Millimeters of mercury (mmHg)Standard Deviation 7.29
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, Baseline, n=26, 28101.8 Millimeters of mercury (mmHg)Standard Deviation 6.59
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 10 minutes PD, n=26, 28100.7 Millimeters of mercury (mmHg)Standard Deviation 7.59
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 30 minutes PD, n=26, 28100.9 Millimeters of mercury (mmHg)Standard Deviation 9.35
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 45 minutes PD, n=26, 28100.9 Millimeters of mercury (mmHg)Standard Deviation 7.41
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 74 minutes PD, n=26, 28102.7 Millimeters of mercury (mmHg)Standard Deviation 7.95
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 2 hours PD, n=26, 28103.3 Millimeters of mercury (mmHg)Standard Deviation 8.16
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 SBP, Pre-dose, n=25, 2899.6 Millimeters of mercury (mmHg)Standard Deviation 6.92
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 SBP, 1 hour PD, n=25, 28101.8 Millimeters of mercury (mmHg)Standard Deviation 8.38
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, Pre-dose, n=24, 26101.5 Millimeters of mercury (mmHg)Standard Deviation 9.18
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 10 minutes PD, n=24, 26101.3 Millimeters of mercury (mmHg)Standard Deviation 9.98
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 30 minutes PD, n=24, 26103.9 Millimeters of mercury (mmHg)Standard Deviation 8.72
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 45 minutes PD, n=24, 26103.6 Millimeters of mercury (mmHg)Standard Deviation 7.95
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 75 minues PD, n=24, 26104.9 Millimeters of mercury (mmHg)Standard Deviation 8.33
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 4 hours PD, n=24, 26102.2 Millimeters of mercury (mmHg)Standard Deviation 7.8
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 2 hours PD, n=24, 26103.0 Millimeters of mercury (mmHg)Standard Deviation 6.68
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 8 hours PD, n=24, 26104.7 Millimeters of mercury (mmHg)Standard Deviation 8.92
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, Baseline, n=26, 2862.0 Millimeters of mercury (mmHg)Standard Deviation 5.12
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 10 minutes PD, n=26, 2862.4 Millimeters of mercury (mmHg)Standard Deviation 7.16
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 30 minutes PD, n=26, 2862.4 Millimeters of mercury (mmHg)Standard Deviation 6.55
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 45 minutes PD, n=26, 2863.0 Millimeters of mercury (mmHg)Standard Deviation 7.93
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 75 minutes PD, n=26, 2863.3 Millimeters of mercury (mmHg)Standard Deviation 5.74
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 2 hours PD, n=26, 2863.0 Millimeters of mercury (mmHg)Standard Deviation 4.81
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 DBP, Pre-dose, n=25, 2863.7 Millimeters of mercury (mmHg)Standard Deviation 8.17
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 DBP, 30 minutes PD, n=25, 2862.3 Millimeters of mercury (mmHg)Standard Deviation 9.19
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 DBP, 1 hour PD, n=25, 2863.2 Millimeters of mercury (mmHg)Standard Deviation 6.68
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, Pre-dose, n=24, 2660.8 Millimeters of mercury (mmHg)Standard Deviation 5.7
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 10 minutes PD, n=24, 2660.9 Millimeters of mercury (mmHg)Standard Deviation 6.55
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 30 minutes PD, n=24, 2662.8 Millimeters of mercury (mmHg)Standard Deviation 3.83
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 45 minutes PD, n=24, 2661.9 Millimeters of mercury (mmHg)Standard Deviation 4.05
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 75 minutes PD, n=23, 2663.0 Millimeters of mercury (mmHg)Standard Deviation 5.12
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 2 hours PD, n=23, 2664.1 Millimeters of mercury (mmHg)Standard Deviation 7.33
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 4 hours PD, n=23, 2662.3 Millimeters of mercury (mmHg)Standard Deviation 8.56
PlaceboSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 8 hours PD, n=23, 2663.2 Millimeters of mercury (mmHg)Standard Deviation 4.78
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 DBP, 1 hour PD, n=25, 2862.2 Millimeters of mercury (mmHg)Standard Deviation 7.9
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, Baseline, n=26, 2862.1 Millimeters of mercury (mmHg)Standard Deviation 6.38
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, Baseline, n=26, 28102.9 Millimeters of mercury (mmHg)Standard Deviation 9.21
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 8 hours PD, n=23, 2663.3 Millimeters of mercury (mmHg)Standard Deviation 7.29
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 10 minutes PD, n=26, 28102.4 Millimeters of mercury (mmHg)Standard Deviation 7.69
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 10 minutes PD, n=26, 2863.5 Millimeters of mercury (mmHg)Standard Deviation 4.08
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 30 minutes PD, n=26, 28103.5 Millimeters of mercury (mmHg)Standard Deviation 6.89
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, Pre-dose, n=24, 2663.8 Millimeters of mercury (mmHg)Standard Deviation 8.14
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 45 minutes PD, n=26, 28103.5 Millimeters of mercury (mmHg)Standard Deviation 7.05
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 30 minutes PD, n=26, 2862.6 Millimeters of mercury (mmHg)Standard Deviation 4.29
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 74 minutes PD, n=26, 28104.4 Millimeters of mercury (mmHg)Standard Deviation 6.81
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 75 minutes PD, n=23, 2663.6 Millimeters of mercury (mmHg)Standard Deviation 6.34
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 SBP, 2 hours PD, n=26, 28104.8 Millimeters of mercury (mmHg)Standard Deviation 7.82
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 45 minutes PD, n=26, 2863.3 Millimeters of mercury (mmHg)Standard Deviation 5.99
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 SBP, Pre-dose, n=25, 28103.7 Millimeters of mercury (mmHg)Standard Deviation 8.64
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 SBP, 30 minutes PD, n=25, 28102.9 Millimeters of mercury (mmHg)Standard Deviation 7.31
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 10 minutes PD, n=24, 2662.7 Millimeters of mercury (mmHg)Standard Deviation 7.07
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 SBP, 1 hour PD, n=25, 28103.6 Millimeters of mercury (mmHg)Standard Deviation 7.17
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 75 minutes PD, n=26, 2864.4 Millimeters of mercury (mmHg)Standard Deviation 7.91
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, Pre-dose, n=24, 26103.9 Millimeters of mercury (mmHg)Standard Deviation 6.15
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 4 hours PD, n=23, 2663.9 Millimeters of mercury (mmHg)Standard Deviation 6.59
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 10 minutes PD, n=24, 26103.7 Millimeters of mercury (mmHg)Standard Deviation 6.7
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 1 DBP, 2 hours PD, n=26, 2863.4 Millimeters of mercury (mmHg)Standard Deviation 5.49
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 30 minutes PD, n=24, 26102.9 Millimeters of mercury (mmHg)Standard Deviation 8.91
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 30 minutes PD, n=24, 2663.7 Millimeters of mercury (mmHg)Standard Deviation 7.88
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 45 minutes PD, n=24, 26103.4 Millimeters of mercury (mmHg)Standard Deviation 7.03
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 DBP, Pre-dose, n=25, 2862.8 Millimeters of mercury (mmHg)Standard Deviation 5.58
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 75 minues PD, n=24, 26103.9 Millimeters of mercury (mmHg)Standard Deviation 6.36
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 2 hours PD, n=23, 2663.3 Millimeters of mercury (mmHg)Standard Deviation 5.5
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 4 hours PD, n=24, 26106.0 Millimeters of mercury (mmHg)Standard Deviation 5.2
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 8 DBP, 30 minutes PD, n=25, 2862.4 Millimeters of mercury (mmHg)Standard Deviation 7.26
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 2 hours PD, n=24, 26102.9 Millimeters of mercury (mmHg)Standard Deviation 6.42
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 DBP, 45 minutes PD, n=24, 2664.5 Millimeters of mercury (mmHg)Standard Deviation 4.68
VI 25 µgSystolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Day 1, Day 8, and Day 14 of the Respective Treatment PeriodDay 14 SBP, 8 hours PD, n=24, 26104.7 Millimeters of mercury (mmHg)Standard Deviation 7.76
Primary

Total Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment Period

Blood samples were collected for the measurement of total bilirubin, direct bilirubin, creatinine, and uric acid at Day 14 of the respective treatment period. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodTotal bilirubin, n=22, 256.2 Micromoles per liter (µmol/L)Standard Deviation 2.22
PlaceboTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodDirect bilirubin, n=22, 251.7 Micromoles per liter (µmol/L)Standard Deviation 0.94
PlaceboTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodCreatinine, n=22, 2539.45 Micromoles per liter (µmol/L)Standard Deviation 7.653
PlaceboTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodUric acid, n=22, 25241.4 Micromoles per liter (µmol/L)Standard Deviation 69.51
VI 25 µgTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodUric acid, n=22, 25245.6 Micromoles per liter (µmol/L)Standard Deviation 47.27
VI 25 µgTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodTotal bilirubin, n=22, 255.8 Micromoles per liter (µmol/L)Standard Deviation 1.99
VI 25 µgTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodCreatinine, n=22, 2539.35 Micromoles per liter (µmol/L)Standard Deviation 6.731
VI 25 µgTotal Bilirubin, Direct Bilirubin, Creatinine, and Uric Acid Values at Day 14 of the Respective Treatment PeriodDirect bilirubin, n=22, 251.2 Micromoles per liter (µmol/L)Standard Deviation 1
Primary

Weighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment Period

Heart rate (HR) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. Weighted means were derived using the linear trapezoidal rule. Actual relative times were used for the calculation except where actual times were missing. If any actual times were missing, planned relative times were used for these observations. For 0-8 hr parameters, treatment, period, participant Baseline, and period Baseline were fitted as fixed effects, and participant was fitted as a random effect. For 0-2 hr parameters, treatment, period, day (1 and 14), participant Baseline, period Baseline, and treatment\*day interaction were fitted as fixed effects, and participant was fitted as a random effect. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboWeighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 weighted HR (0-2 hr), n=26, 2876.39 Beats per minuteStandard Error 1.311
PlaceboWeighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean HR (0-2 hr), n=23, 2676.11 Beats per minuteStandard Error 1.309
PlaceboWeighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean HR (0-8 hr), n=23, 2680.54 Beats per minuteStandard Error 1.458
VI 25 µgWeighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 weighted HR (0-2 hr), n=26, 2879.20 Beats per minuteStandard Error 1.285
VI 25 µgWeighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean HR (0-2 hr), n=23, 2677.67 Beats per minuteStandard Error 1.264
VI 25 µgWeighted Mean Heart Rate at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean HR (0-8 hr), n=23, 2680.65 Beats per minuteStandard Error 1.404
95% CI: [-0.8, 5.7]
95% CI: [-2.4, 3.7]
95% CI: [-2.6, 3.6]
Primary

Weighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment Period

The electrocardiographic (ECG) parameter QT duration corrected using Fridericia's formula (QTcF) was measured at Day 1 and Day 14 of the respective treatment period. hr=hour. Actual relative times were used for the calculation except where actual times were missing. If any actual times were missing, planned relative times were used for these observations. For 0-8 hr parameters, treatment, period, participant Baseline, and period Baseline were fitted as fixed effects, and participant was fitted as a random effect. For 0-2 hr parameters, treatment, period, day (1 and 14), participant Baseline, period Baseline, and treatment\*day interaction were fitted as fixed effects, and participant was fitted as a random effect. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg (n=28).

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboWeighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 weighted mean QTcF (0-2 hr), n=26, 28394.21 millisecondsStandard Error 2.007
PlaceboWeighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean QTcF (0-2 hr), n=23, 26395.09 millisecondsStandard Error 2.122
PlaceboWeighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean QTcF (0-8 hr), n=23, 26393.43 millisecondsStandard Error 1.867
VI 25 µgWeighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 1 weighted mean QTcF (0-2 hr), n=26, 28396.22 millisecondsStandard Error 1.96
VI 25 µgWeighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean QTcF (0-2 hr), n=23, 26398.03 millisecondsStandard Error 2.024
VI 25 µgWeighted Mean QTcF at Day 1 and Day 14 of the Respective Treatment PeriodDay 14 weighted mean QTcF (0-8 hr), n=23, 26396.62 millisecondsStandard Error 1.793
95% CI: [-2.59, 6.61]
95% CI: [-1.93, 7.81]
95% CI: [-0.7, 7.08]
Secondary

AUC(0-t) and AUC(0-8) on Day 14 of the Respective Treatment Period

Area under the concentration-time (AUC) curve from time zero (pre-dose) to the last time AUC(0-t) and from time zero to 8 hours AUC(0-8) of quantifiable concentration of VI on Day 14 of the respective treatment period was measured. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period. Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the Pharmacokinetic Population.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: Pharmacokinetic (PK) Population: all participants in the All Subjects Population for whom a PK sample was obtained and analyzee. Only those participants available at the specified time points were analyzed (represented by n=X in the category titles).

ArmMeasureGroupValue (GEOMETRIC_MEAN)
VI 25 µgAUC(0-t) and AUC(0-8) on Day 14 of the Respective Treatment PeriodAUC(0-t), n=25132.8 picograms*hour per milliliter (pg*hr/mL)
VI 25 µgAUC(0-t) and AUC(0-8) on Day 14 of the Respective Treatment PeriodAUC(0-8), n=19181.7 picograms*hour per milliliter (pg*hr/mL)
Secondary

Average Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment Period

During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Average flow rate is defined as the average inspiratory flow rate (Liters \[L\]/min) across the inhalation profile when inhaling across the resistance of the inhaler. PIFR is defined as the Peak Inspiratory Flow Rate (L/min) of the inhalation profile when inhaling across the resistance of the inhaler.The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was used for each day (Days 1 and 14 of the respective treatment period), and the average flow rate and PIFR were determined. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, Average flow rate, n=23, 2538.84 Liters per minute (L/min)Standard Deviation 9.44
PlaceboAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, Average flow rate, n=23, 2540.45 Liters per minute (L/min)Standard Deviation 10.538
PlaceboAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, PIFR, n=23, 2558.27 Liters per minute (L/min)Standard Deviation 14.258
PlaceboAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, PIFR, n=23, 2560.93 Liters per minute (L/min)Standard Deviation 14.901
VI 25 µgAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, PIFR, n=23, 2561.79 Liters per minute (L/min)Standard Deviation 15.348
VI 25 µgAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, Average flow rate, n=23, 2542.23 Liters per minute (L/min)Standard Deviation 10.952
VI 25 µgAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, PIFR, n=23, 2561.41 Liters per minute (L/min)Standard Deviation 16.513
VI 25 µgAverage Flow Rate and Peak Inspiratory Flow Rate (PIFR) on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, Average flow rate, n=23, 2542.08 Liters per minute (L/min)Standard Deviation 10.191
Secondary

Average Oropharyngeal Cross-sectional Area on Day 1 and Day 14 of the Respective Treatment Period

During the pharyngometry assessment, participants inhaled through a wavetube, which had a mouthpiece with the same dimensions as the mouthpiece on the dry powder inhaler used for the study. This technique was used to measure the size of the throat and mouth (oropharynx) in the form of pharyngograms. Pharyngometry data were recorded for each day (Day 1 and Day 14 of the respective treatment period) using the mean of four measurements (pharyngograms), and the average oropharyngeal cross-sectional area was calculated.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboAverage Oropharyngeal Cross-sectional Area on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=15, 135.65 centimeters squared (cm^2)Standard Deviation 1.834
PlaceboAverage Oropharyngeal Cross-sectional Area on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=14, 155.47 centimeters squared (cm^2)Standard Deviation 1.661
VI 25 µgAverage Oropharyngeal Cross-sectional Area on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=15, 134.42 centimeters squared (cm^2)Standard Deviation 2.31
VI 25 µgAverage Oropharyngeal Cross-sectional Area on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=14, 155.16 centimeters squared (cm^2)Standard Deviation 2.139
Secondary

Blood Glucose and Potassium on Day 14 of the Respective Treatment Period

Blood glucose and potassium values were measured on Day 14 of the respective treatment period. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period. . Weighted means were derived using the linear trapezoidal rule. Actual relative times were used for the calculation except where actual times were missing. If any actual times were missing, planned relative times were used for these observations. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg. Treatment and period were fitted as fixed effects and participant was fitted as a random effect.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMaximum Glucose (0-2 hr), n=24, 265.55 Millimoles per liter (mmol/L)Standard Error 0.184
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMaximum Glucose (0-8 hr), n=24, 266.22 Millimoles per liter (mmol/L)Standard Error 0.187
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Glucose (0-2 hr), n=21, 255.02 Millimoles per liter (mmol/L)Standard Error 0.114
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Glucose (0-8 hr), n=19, 245.26 Millimoles per liter (mmol/L)Standard Error 0.108
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMinimum Potassium (0-2 hr), n=23, 264.05 Millimoles per liter (mmol/L)Standard Error 0.04
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMinimum Potassium (0-8 hr), n=24, 263.89 Millimoles per liter (mmol/L)Standard Error 0.06
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Potassium (0-2 hr), n=19, 224.21 Millimoles per liter (mmol/L)Standard Error 0.049
PlaceboBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Potassium (0-8 hr), n=17, 224.05 Millimoles per liter (mmol/L)Standard Error 0.052
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Potassium (0-8 hr), n=17, 224.11 Millimoles per liter (mmol/L)Standard Error 0.049
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMaximum Glucose (0-2 hr), n=24, 265.57 Millimoles per liter (mmol/L)Standard Error 0.182
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMinimum Potassium (0-2 hr), n=23, 264.00 Millimoles per liter (mmol/L)Standard Error 0.038
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMaximum Glucose (0-8 hr), n=24, 266.03 Millimoles per liter (mmol/L)Standard Error 0.183
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Potassium (0-2 hr), n=19, 224.23 Millimoles per liter (mmol/L)Standard Error 0.046
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Glucose (0-2 hr), n=21, 255.06 Millimoles per liter (mmol/L)Standard Error 0.109
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodMinimum Potassium (0-8 hr), n=24, 263.87 Millimoles per liter (mmol/L)Standard Error 0.059
VI 25 µgBlood Glucose and Potassium on Day 14 of the Respective Treatment PeriodWeighted Mean Glucose (0-8 hr), n=19, 245.21 Millimoles per liter (mmol/L)Standard Error 0.1
Secondary

Cmax on Day 14 of the Respective Treatment Period

Cmax is defined as the maximum observed concentration on Day 14 of the respective treatment period. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: PK Population

ArmMeasureValue (GEOMETRIC_MEAN)
VI 25 µgCmax on Day 14 of the Respective Treatment Period97.44 picograms per milliliter (pg/mL)
Secondary

Distance of Assessment on Day 1 and Day 14 of the Respective Treatment Period

During the pharyngometry assessment, participants inhaled through a wavetube, which had a mouthpiece with the same dimensions as the mouthpiece on the dry powder inhaler used for this study. This technique was used to measure the size of the throat and mouth (oropharynx) in the form of pharyngograms. Distance of assessment is defined as the distance (length measured in centimeters \[cm\]) estimated to be from the lips to the larynx. Pharyngometry data were recorded for each day (Days 1 and 14 of the respective treatment period) using the mean of four measurements (pharyngograms), and the average oropharyngeal cross-sectional area was calculated.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboDistance of Assessment on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=15, 1318.40 centimeters (cm)Standard Deviation 1.502
PlaceboDistance of Assessment on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=14, 1518.46 centimeters (cm)Standard Deviation 1.395
VI 25 µgDistance of Assessment on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=15, 1318.26 centimeters (cm)Standard Deviation 1.824
VI 25 µgDistance of Assessment on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=14, 1518.41 centimeters (cm)Standard Deviation 1.276
Secondary

Ex-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment Period

The ex-throat dose (ETD) and the nominal ETD is the mass (micrograms) of active investigational material that passes beyond the throat, nominal being the mean.The recorded inhalation profiles of the participants and the mouth-throat (oropharyngeal) models of the sizes that approximated to pharyngometry measurements of the participants were used in conjunction with the electronic Lung (eLung) for in vitro assessment. The eLung is a breathing simulator that replicates the selected inhalation profile with an active inhaler placed at the lips end of the selected ororpharyngeal model. After the dose is emitted from the inhaler, the analysis and assay of throat deposition and material passing beyond the throat was used to derive the nominal, minimum, and maximum predicted ETD and ETD \<2 microns.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
VI 25 µgEx-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment PeriodNominal ETD9.00 microgramsStandard Deviation 0.697
VI 25 µgEx-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment PeriodMinimum ETD8.94 microgramsStandard Deviation 0.652
VI 25 µgEx-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment PeriodMaximum ETD9.06 microgramsStandard Deviation 0.747
VI 25 µgEx-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment PeriodETD <2 microns4.19 microgramsStandard Deviation 1.079
VI 25 µgEx-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment PeriodMinimum ETD <2 microns4.10 microgramsStandard Deviation 1.011
VI 25 µgEx-throat Dose (ETD) and ETD <2 Microns on Day 1 and Day 14 of the Respective Treatment PeriodMaximum ETD <2 microns4.29 microgramsStandard Deviation 1.157
Secondary

Inhalation Time on Day 1 and Day 14 of the Respective Treatment Period

During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Inhalation time is defined as the duration of the inhalation(s) when inhaling across the resistance of the inhaler. The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was used for each day (Days 1 and 14 of the respective treatment period), and the inhalation time was determined. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboInhalation Time on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=23, 251.45 Seconds (sec)Standard Deviation 0.604
PlaceboInhalation Time on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=23, 251.35 Seconds (sec)Standard Deviation 0.528
VI 25 µgInhalation Time on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=23, 251.36 Seconds (sec)Standard Deviation 0.551
VI 25 µgInhalation Time on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=23, 251.34 Seconds (sec)Standard Deviation 0.476
Secondary

Inhaled Volume on Day 1 and Day 14 of the Respective Treatment Period

During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Inhaled volume is defined as the volume of air (Liters) inhaled during the inhalation across the resistance of the inhaler. The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was used for each day (Days 1 and 14 of the respective treatment period), and the inhalaled volume was determined. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboInhaled Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=23, 250.93 LitersStandard Deviation 0.433
PlaceboInhaled Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=23, 250.90 LitersStandard Deviation 0.426
VI 25 µgInhaled Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=23, 250.92 LitersStandard Deviation 0.343
VI 25 µgInhaled Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=23, 250.95 LitersStandard Deviation 0.417
Secondary

Oropharyngeal Volume on Day 1 and Day 14 of the Respective Treatment Period

During the pharyngometry assessment, participants inhaled through a wavetube, which had a mouthpiece with the same dimensions as the mouthpiece on the dry powder inhaler used for this study. This technique was used to measure the size of the throat and mouth (oropharynx) in the form of pharyngograms. Oropharyngeal volume is defined as the volume (centimeters cubed \[cm\^3\]) of the mouth and throat estimated to be from the lips to the larynx. Pharyngometry data were recorded for each day (Days 1 and 14 of the respective treatment period) using the mean of four measurements (pharyngograms), and the average oropharyngeal cross-sectional area was calculated.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboOropharyngeal Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=15, 13102.33 cm^3Standard Deviation 32.451
PlaceboOropharyngeal Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=14, 15102.26 cm^3Standard Deviation 36.322
VI 25 µgOropharyngeal Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=15, 1378.60 cm^3Standard Deviation 39.296
VI 25 µgOropharyngeal Volume on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=14, 1593.35 cm^3Standard Deviation 37.19
Secondary

Peak Pressure Drop on Day 1 and Day 14 of the Respective Treatment Period

During the inhalation profile assessment, participants inhaled through a mouthpiece from a device with a similar resistance to the dry powder inhaler used for this study. Peak pressure drop is defined as the maximum pressure drop (kilopascal \[kPa\]) achieved during inhalation across the resistance of the inhaler. The pressure drop during the inhalation was measured, and the inhalation profiles (pressure drop versus time profile) of the participants were obtained. The mean of the two inhalation profile measurements was calculated for each day (Days 1 and 14 of the respective treatment period), and used for subsequent modeling and prediction of dose emission attributes. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed at different time points, so the overall number of participants analyzed reflects everyone in the All Subjects Population.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboPeak Pressure Drop on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=23, 252.97 Kilopascal (kpa)Standard Deviation 1.275
PlaceboPeak Pressure Drop on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=23, 253.23 Kilopascal (kpa)Standard Deviation 1.479
VI 25 µgPeak Pressure Drop on Day 1 and Day 14 of the Respective Treatment PeriodDay 1, n=23, 253.33 Kilopascal (kpa)Standard Deviation 1.632
VI 25 µgPeak Pressure Drop on Day 1 and Day 14 of the Respective Treatment PeriodDay 14, n=23, 253.33 Kilopascal (kpa)Standard Deviation 1.35
Secondary

Tmax, t1/2, and t at Day 14 of the Respective Treatment Period

tmax is defined as the time to reach the observed maximum concentration, t1/2 is defined as the time required to reduce the plasma concentration to one half its initial value, and t is defined as the time of the last observed quantifiable concentration on Day 14 of the respective treatment period. Samples were collected at the following times: pre-dose; 10 minutes (min) and 30 min post-dose; and 1, 2, 4, 6, and 8 hours post-dose for participants who were \>=20 kilograms and pre-dose; 10 min and 30 min post-dose; and 1, 2, and 4 hours post-dose for participants who were \<=20 kilograms on Day 14 of the respective treatment period.

Time frame: Day 14 of the respective treatment period (up to Study Day 49)

Population: PK Population. Only those participants available at the specified time points were analyzed (represented by n=X, X in the category titles). Different participants may have been analyzed for different parameters, so the overall number of participants analyzed reflects everyone in the PK Population.

ArmMeasureGroupValue (MEDIAN)
VI 25 µgTmax, t1/2, and t at Day 14 of the Respective Treatment Periodt, n=236.00 hours
VI 25 µgTmax, t1/2, and t at Day 14 of the Respective Treatment Periodtmax, n=230.20 hours
VI 25 µgTmax, t1/2, and t at Day 14 of the Respective Treatment Periodt1/2, n=143.131 hours
Secondary

Total Emitted Dose (TED) on Day 1 and Day 14 of the Respective Treatment Period

The total emitted dose (TED) is defined as the mass (micrograms) of the nominal dose that passes beyond the throat. The recorded inhalation profiles of the participants and the mouth-throat (oropharyngeal) models of the sizes that approximated to pharyngometry measurements of the participants were used in conjunction with the electronic Lung (eLung) for in vitro assessment. The eLung is a breathing simulator that replicates the selected inhalation profile with an active inhaler placed at the lips end of the selected ororpharyngeal model. After the dose is emitted from the inhaler, the analysis and assay of throat deposition and material passing beyond the throat was used to derive the nominal, minimum, and maximum predicted total emitted dose.

Time frame: Day 1 and Day 14 of the respective treatment period (up to Study Day 49)

Population: All Subjects Population. Only those participants available at the specified time point were analyzed. Subject 2308 received VI 25 µg in both treatment periods, and contributed twice to the summary of VI 25 µg.

ArmMeasureGroupValue (MEAN)Dispersion
VI 25 µgTotal Emitted Dose (TED) on Day 1 and Day 14 of the Respective Treatment PeriodMinimum TED20.24 microgramsStandard Deviation 0.188
VI 25 µgTotal Emitted Dose (TED) on Day 1 and Day 14 of the Respective Treatment PeriodNominal TED20.28 microgramsStandard Deviation 0.177
VI 25 µgTotal Emitted Dose (TED) on Day 1 and Day 14 of the Respective Treatment PeriodMaximum TED20.31 microgramsStandard Deviation 0.173

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026