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A Study of RPL554 Drug Administered by Metered Dose Inhaler to Treat Chronic Obstructive Pulmonary Disease

A Phase II, Randomised Study to Assess the Pharmacokinetics, Safety and Pharmacodynamics of Single and Repeat Doses of RPL554 Administered by Pressurised Metered Dose Inhaler in Patients With COPD

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04091360
Enrollment
40
Registered
2019-09-16
Start date
2019-04-29
Completion date
2021-01-21
Last updated
2022-09-21

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

Conditions

COPD

Keywords

COPD, Adults, Phase II, RPL554, Ensifentrine

Brief summary

The purpose of this study is to investigate 5 doses of RPL554 and placebo, administered by pressurized metered dose inhaler (pMDI), in patients with moderate to severe chronic obstructive pulmonary disease (COPD).

Detailed description

The study will consist of two parts. Part A is a parallel group, placebo-controlled single dose study to ascertain the Pharmacokinetics (PK) profile, safety and bronchodilator effect of a single dose of RPL554 administered via pMDI. Five of the 6 treatment arms will be double-blind and one will be single-blind (due to the different number of capsules administered). Part B is a 7-day placebo-controlled, complete block cross-over, repeat dose study to assess the bronchodilator effect of repeat doses of RPL554 delivered via pMDI.

Interventions

Single dose RPL554 via metered dose inhaler.

DRUGPlacebos

Part A: Single dose placebo via metered dose inhaler. Part B: Repeat doses of placebo via metered dose inhaler in crossover fashion. One dose administered twice daily over 7 days.

Part B: Repeat doses via metered dose inhaler in crossover fashion. One dose administered twice daily over 7 days.

Sponsors

Iqvia Pty Ltd
CollaboratorINDUSTRY
Verona Pharma plc
Lead SponsorINDUSTRY

Study design

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

Masking description

Double blind

Eligibility

Sex/Gender
ALL
Age
40 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Male and female patients with moderate to severe COPD, with a post bronchodilator FEV1 of 40 to 80% of predicted and FEV1/FVC ratio of ≤0.70. * They must have a baseline increase in FEV1 of \>150 mL following four puffs of salbutamol. * They must have at least a 10 pack-year smoking history, and may be either a current or former smoker.

Exclusion criteria

* Patients must be clinically stable without recent COPD exacerbations or hospitalisations. * They must not have uncontrolled disease or chronic heart failure.

Design outcomes

Primary

MeasureTime frameDescription
Part A: Pharmacokinetic Parameter AUC0-12Day 1Area under the curve from 0 to 12 hours after single dose drug administration.
Part A: Pharmacokinetic Parameter CmaxDay 1Pharmacokinetic Parameter Cmax after a Single Dose
Part A: Pharmacokinetic Parameter AUC0-tDay 1Area under the curve at maximum concentration 0-24 hrs after single dose drug administration
Part A: RPL554 Plasma Pharmacokinetic Parameter (Half-life)Day 1RPL554 Plasma Pharmacokinetics concentration after single dose
Part B: Change From Baseline in Peak FEV1 (Over 4 Hours) on Day 7Day 7Change from Baseline FEV1 to Peak FEV1 (over 4 hours) after morning dosing on Day 7

Secondary

MeasureTime frameDescription
Part A: Safety and Tolerability / Urinalysis Safety Assessments: Number of Patients With Treatment-emergent Urinalysis Abnormal Laboratory Assessments1 dayNumber of patients with treatment-emergent urinalysis abnormal laboratory assessments
Part A: Safety and Tolerability / Supine Vitals Signs - Pulse RateStart of treatment to day 1Number of patients with treatment-emergent abnormal vital signs (pulse rate in bpm)
Part A: Safety and Tolerability / Supine Vitals Signs - Blood PressureStart of treatment to day 1Number of patients with treatment-emergent abnormal vital signs (blood pressure in mm Hg)
Part A: Safety and Tolerability / ECG - QTcFStart of treatment to day 1Number of patients with treatment-emergent abnormal ECG parameters, QTcF in msec
Part A: Safety and Tolerability / ECG - Heart RateStart of treatment to day 1Number of patients with treatment-emergent abnormal ECG parameters, heart rate in bpm
Part B: Change From Baseline in Average FEV1 (Over 4 Hrs) After 7 DaysDay 7Change from baseline in average FEV1 (over 4 hours) on Day 7 after morning dose
Part B: Change From Baseline in Average FEV1 (Over 12 Hours) After 7 DaysDay 7Change from baseline FEV1 in average FEV1 (over 12 hours) on Day 7 after morning dose
Part B: Change From Baseline in Trough FEV1 After 7 DaysDay 7Change from Baseline FEV1 to Morning Trough FEV1 on Day 7 after morning dose
Part B: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1st DoseDay 1Change from baseline FEV1 in peak FEV1 (over 4 hours) after first dose
Part A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 DoseDay 1Change from Baseline FEV1 to Peak FEV1 (over 4 hours) After Single Dose
Part B: Change From Baseline in Average FEV1 (Over 12 Hours) After 1st DoseDay 1Change from baseline FEV1 in average FEV1 (over 12 hours) on Day 1
Part B: RPL554 Plasma Pharmacokinetic Parameter (Onset of Action)Day 1Determination of onset of action (\>10% increase in FEV1 from pre- to post-first dose, censored at 120 minutes) on Day 1
Part B: Safety and Tolerability / Hematology Safety Assessments1 dayNumber of patients with treatment-emergent hematology abnormal laboratory assessments
Part B: Safety and Tolerability / Blood Chemistry Safety Assessments1 dayNumber of patients with treatment-emergent blood chemistry abnormal laboratory assessments
Part B: Safety and Tolerability / Urinalysis Safety Assessments1 dayNumber of patients with treatment-emergent urinalysis abnormal laboratory assessments
Part B: Safety and Tolerability / Supine Vital Signs - Pulse RateStart of treatment to day 1Number of patients with treatment-emergent abnormal vital signs (pulse rate in bpm)
Part B: Safety and Tolerability / Supine Vital Signs - Blood PressureStart of treatment to day 1Number of patients with treatment-emergent abnormal vital signs (blood pressure in mm Hg)
Part B: Safety and Tolerability / ECG - QTcFStart of treatment to day 70Number of patients with treatment-emergent abnormal ECG parameters, QTcF in msec
Part B: Safety and Tolerability / ECG - Heart RateStart of treatment to day 70Number of patients with treatment-emergent abnormal ECG parameters, heart rate in bpm
Part B: Change From Baseline in Average FEV1 (Over 4 Hours) After 1st DoseDay 1Change from baseline FEV1 in average FEV1 (over 4 hours) on Day 1
Part A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 DoseDay 1Change from Baseline FEV1 to Average FEV1 (over 4 hours) After Single Dose
Part A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 DoseDay 1Change from Baseline FEV1 to Average FEV1 (over 12 hours) After Single Dose
Part A: Safety and Tolerability / Hematology Safety Assessments1 dayNumber of patients with treatment-emergent hematology abnormal laboratory assessments
Part A: Safety and Tolerability / Blood Chemistry Safety Assessments: Number of Patients With Treatment-emergent Blood Chemistry Abnormal Laboratory Assessments1 dayNumber of patients with treatment-emergent blood chemistry abnormal laboratory assessments

Countries

United Kingdom

Participant flow

Recruitment details

40 subjects enrolled for Part A and eligible to continue into Part B.

Pre-assignment details

Part A: 40 Patients randomized equally to receive a single dose of RPL554 (0.10, 0.30, 1, 3, or 6 mg) or matching placebo via pressurized metered dose inhaler (pMDI). Patients continued to Part B after Part A completed. Part B: 28 Patients continued to Part B and randomly assigned to 1 of 4 treatment sequences in a crossover design (1-week treatment periods separated by 7-10 day washout). Each sequence included twice daily RPL554 (0.30, 1, or 3 mg) or matching placebo via pMDI.

Participants by arm

ArmCount
0.10 mg
Single dose of RPL554 via pMDI (double-blind)
6
0.30 mg
Single dose of RPL554 via pMDI (double-blind)
7
1 mg
Single dose of RPL554 via pMDI (double-blind)
6
3 mg
Single dose of RPL554 via pMDI (double-blind)
7
6 mg
Single dose of RPL554 via pMDI (single-blind)
7
Placebo
Single dose of placebo via pMDI (double-blind)
7
Total40

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008FG009
Part B (R, PC, XO) Twice Daily for 7 DayAdverse Event0000000011
Part B (R, PC, XO) Twice Daily for 7 DayPhysician Decision0000001100
Part B (R, PC, XO) Twice Daily for 7 DayWithdrawal by Subject0000001001

Baseline characteristics

Characteristic0.10 mgTotalPlacebo6 mg3 mg1 mg0.30 mg
Age, Continuous66.8 years
STANDARD_DEVIATION 4.92
66.3 years
STANDARD_DEVIATION 6.67
64.4 years
STANDARD_DEVIATION 6.6
63.1 years
STANDARD_DEVIATION 8.71
67.1 years
STANDARD_DEVIATION 6.72
64.3 years
STANDARD_DEVIATION 7.87
71.4 years
STANDARD_DEVIATION 1.27
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
6 Participants40 Participants7 Participants7 Participants7 Participants6 Participants7 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
6 Participants40 Participants7 Participants7 Participants7 Participants6 Participants7 Participants
Region of Enrollment
United Kingdom
6 participants40 participants7 participants7 participants7 participants6 participants7 participants
Sex: Female, Male
Female
2 Participants16 Participants3 Participants2 Participants3 Participants2 Participants4 Participants
Sex: Female, Male
Male
4 Participants24 Participants4 Participants5 Participants4 Participants4 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 70 / 60 / 70 / 70 / 70 / 240 / 230 / 230 / 25
other
Total, other adverse events
2 / 61 / 71 / 62 / 74 / 72 / 73 / 244 / 232 / 233 / 25
serious
Total, serious adverse events
0 / 60 / 70 / 60 / 70 / 70 / 70 / 240 / 230 / 230 / 25

Outcome results

Primary

Part A: Pharmacokinetic Parameter AUC0-12

Area under the curve from 0 to 12 hours after single dose drug administration.

Time frame: Day 1

Population: Pharmacokinetic (PK) Analysis Set in Part A: all randomized patients who had blood sampling performed after the single dose of RPL554 and had evaluable PK parameter data. The PK Analysis Set included the 33 patients who received RPL554 in Part A but not the 7 patients in the placebo group.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart A: Pharmacokinetic Parameter AUC0-12175 h*pg/mLStandard Deviation 96.7
0.30 mgPart A: Pharmacokinetic Parameter AUC0-12611 h*pg/mLStandard Deviation 183
1 mgPart A: Pharmacokinetic Parameter AUC0-121550 h*pg/mLStandard Deviation 443
3 mgPart A: Pharmacokinetic Parameter AUC0-125860 h*pg/mLStandard Deviation 3120
6 mgPart A: Pharmacokinetic Parameter AUC0-129360 h*pg/mLStandard Deviation 8100
Primary

Part A: Pharmacokinetic Parameter AUC0-t

Area under the curve at maximum concentration 0-24 hrs after single dose drug administration

Time frame: Day 1

Population: Pharmacokinetic (PK) Analysis Set in Part A: all randomized patients who had blood sampling performed after the single dose of RPL554 and had evaluable PK parameter data. The PK Analysis Set included the 33 patients who received RPL554 in Part A but not the 7 patients in the placebo group.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart A: Pharmacokinetic Parameter AUC0-t208 h*pg/mLStandard Deviation 119
0.30 mgPart A: Pharmacokinetic Parameter AUC0-t692 h*pg/mLStandard Deviation 229
1 mgPart A: Pharmacokinetic Parameter AUC0-t1680 h*pg/mLStandard Deviation 559
3 mgPart A: Pharmacokinetic Parameter AUC0-t6800 h*pg/mLStandard Deviation 3770
6 mgPart A: Pharmacokinetic Parameter AUC0-t10800 h*pg/mLStandard Deviation 10100
Primary

Part A: Pharmacokinetic Parameter Cmax

Pharmacokinetic Parameter Cmax after a Single Dose

Time frame: Day 1

Population: Pharmacokinetic (PK) Analysis Set in Part A: all randomized patients who had blood sampling performed after the single dose of RPL554 and had evaluable PK parameter data. The PK Analysis Set included the 33 patients who received RPL554 in Part A but not the 7 patients in the placebo group.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart A: Pharmacokinetic Parameter Cmax39.4 pg/mLStandard Deviation 16.4
0.30 mgPart A: Pharmacokinetic Parameter Cmax138 pg/mLStandard Deviation 40.9
1 mgPart A: Pharmacokinetic Parameter Cmax467 pg/mLStandard Deviation 57.8
3 mgPart A: Pharmacokinetic Parameter Cmax1520 pg/mLStandard Deviation 1050
6 mgPart A: Pharmacokinetic Parameter Cmax2360 pg/mLStandard Deviation 1430
Primary

Part A: RPL554 Plasma Pharmacokinetic Parameter (Half-life)

RPL554 Plasma Pharmacokinetics concentration after single dose

Time frame: Day 1

Population: Pharmacokinetic (PK) Analysis Set in Part A: all randomized patients who had blood sampling performed after the single dose of RPL554 and had evaluable PK parameter data. The PK Analysis Set included the 33 patients who received RPL554 in Part A but not the 7 patients in the placebo group.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart A: RPL554 Plasma Pharmacokinetic Parameter (Half-life)6.31 hStandard Deviation 5.18
0.30 mgPart A: RPL554 Plasma Pharmacokinetic Parameter (Half-life)5.32 hStandard Deviation 3.36
1 mgPart A: RPL554 Plasma Pharmacokinetic Parameter (Half-life)3.47 hStandard Deviation 1.44
3 mgPart A: RPL554 Plasma Pharmacokinetic Parameter (Half-life)5.62 hStandard Deviation 1.7
6 mgPart A: RPL554 Plasma Pharmacokinetic Parameter (Half-life)4.44 hStandard Deviation 2.03
Primary

Part B: Change From Baseline in Peak FEV1 (Over 4 Hours) on Day 7

Change from Baseline FEV1 to Peak FEV1 (over 4 hours) after morning dosing on Day 7

Time frame: Day 7

Population: Full Analysis Set = number of patients with at least one on treatment value who contributed to the model estimation.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) on Day 70.189 LStandard Deviation 0.1624
0.30 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) on Day 70.261 LStandard Deviation 0.1597
1 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) on Day 70.310 LStandard Deviation 0.1511
3 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) on Day 7-0.016 LStandard Deviation 0.1485
p-value: <0.000195% CI: [1.163, 1.281]ANCOVA
p-value: <0.000195% CI: [1.146, 1.263]ANCOVA
p-value: <0.000195% CI: [1.085, 1.195]ANCOVA
Secondary

Part A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 Dose

Change from Baseline FEV1 to Average FEV1 (over 12 hours) After Single Dose

Time frame: Day 1

Population: Full analysis set.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 Dose0.018 LStandard Deviation 0.0643
0.30 mgPart A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 Dose0.061 LStandard Deviation 0.0429
1 mgPart A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 Dose0.010 LStandard Deviation 0.0408
3 mgPart A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 Dose0.121 LStandard Deviation 0.1321
6 mgPart A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 Dose0.190 LStandard Deviation 0.1053
PlaceboPart A: Change From Baseline in Average FEV1 (Over 12 Hours) After 1 Dose-0.031 LStandard Deviation 0.074
p-value: <0.000195% CI: [1.073, 1.204]ANCOVA
p-value: 0.004195% CI: [1.03, 1.155]ANCOVA
p-value: 0.5395% CI: [0.96, 1.081]ANCOVA
Secondary

Part A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 Dose

Change from Baseline FEV1 to Average FEV1 (over 4 hours) After Single Dose

Time frame: Day 1

Population: Full analysis set. () () () () () ()

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 Dose0.058 LStandard Deviation 0.0889
0.30 mgPart A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 Dose0.161 LStandard Deviation 0.065
1 mgPart A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 Dose0.153 LStandard Deviation 0.0653
3 mgPart A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 Dose0.240 LStandard Deviation 0.1677
6 mgPart A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 Dose0.334 LStandard Deviation 0.1147
PlaceboPart A: Change From Baseline in Average FEV1 (Over 4 Hours) After 1 Dose-0.011 LStandard Deviation 0.0805
p-value: <0.000195% CI: [1.142, 1.319]ANCOVA
p-value: 0.000295% CI: [1.075, 1.24]ANCOVA
p-value: 0.012995% CI: [1.022, 1.184]ANCOVA
p-value: 0.007995% CI: [1.03, 1.201]ANCOVA
p-value: 0.3995% CI: [0.957, 1.116]ANCOVA
Secondary

Part A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 Dose

Change from Baseline FEV1 to Peak FEV1 (over 4 hours) After Single Dose

Time frame: Day 1

Population: Full analysis includes patients with values at baseline and peak FEV1 (0-4h).

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 Dose0.133 LStandard Deviation 0.1144
0.30 mgPart A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 Dose0.264 LStandard Deviation 0.1012
1 mgPart A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 Dose0.255 LStandard Deviation 0.0994
3 mgPart A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 Dose0.332 LStandard Deviation 0.2095
6 mgPart A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 Dose0.477 LStandard Deviation 0.1469
PlaceboPart A: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1 Dose0.086 LStandard Deviation 0.0694
p-value: <0.000195% CI: [1.151, 1.363]ANCOVA
p-value: 0.002295% CI: [1.054, 1.246]ANCOVA
p-value: 0.029595% CI: [1.01, 1.202]ANCOVA
p-value: 0.009895% CI: [1.032, 1.235]ANCOVA
p-value: 0.5495% CI: [0.939, 1.125]ANCOVA
Secondary

Part A: Safety and Tolerability / Blood Chemistry Safety Assessments: Number of Patients With Treatment-emergent Blood Chemistry Abnormal Laboratory Assessments

Number of patients with treatment-emergent blood chemistry abnormal laboratory assessments

Time frame: 1 day

Secondary

Part A: Safety and Tolerability / ECG - Heart Rate

Number of patients with treatment-emergent abnormal ECG parameters, heart rate in bpm

Time frame: Start of treatment to day 1

Secondary

Part A: Safety and Tolerability / ECG - QTcF

Number of patients with treatment-emergent abnormal ECG parameters, QTcF in msec

Time frame: Start of treatment to day 1

Secondary

Part A: Safety and Tolerability / Hematology Safety Assessments

Number of patients with treatment-emergent hematology abnormal laboratory assessments

Time frame: 1 day

Secondary

Part A: Safety and Tolerability / Supine Vitals Signs - Blood Pressure

Number of patients with treatment-emergent abnormal vital signs (blood pressure in mm Hg)

Time frame: Start of treatment to day 1

Secondary

Part A: Safety and Tolerability / Supine Vitals Signs - Pulse Rate

Number of patients with treatment-emergent abnormal vital signs (pulse rate in bpm)

Time frame: Start of treatment to day 1

Secondary

Part A: Safety and Tolerability / Urinalysis Safety Assessments: Number of Patients With Treatment-emergent Urinalysis Abnormal Laboratory Assessments

Number of patients with treatment-emergent urinalysis abnormal laboratory assessments

Time frame: 1 day

Secondary

Part B: Change From Baseline in Average FEV1 (Over 12 Hours) After 1st Dose

Change from baseline FEV1 in average FEV1 (over 12 hours) on Day 1

Time frame: Day 1

Population: number of patients with at least one on treatment value who contributed to the model.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 1st Dose0.047 LStandard Deviation 0.0914
0.30 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 1st Dose0.102 LStandard Deviation 0.1306
1 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 1st Dose0.085 LStandard Deviation 0.0659
3 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 1st Dose-0.058 LStandard Deviation 0.1444
p-value: <0.000195% CI: [1.059, 1.137]ANCOVA
p-value: <0.000195% CI: [1.072, 1.15]ANCOVA
p-value: 0.00035% CI: [1.033, 1.109]ANCOVA
Secondary

Part B: Change From Baseline in Average FEV1 (Over 12 Hours) After 7 Days

Change from baseline FEV1 in average FEV1 (over 12 hours) on Day 7 after morning dose

Time frame: Day 7

Population: Full analysis Set.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 7 Days0.008 LStandard Deviation 0.1421
0.30 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 7 Days0.075 LStandard Deviation 0.1472
1 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 7 Days0.085 LStandard Deviation 0.1411
3 mgPart B: Change From Baseline in Average FEV1 (Over 12 Hours) After 7 Days-0.112 LStandard Deviation 0.1662
p-value: 0.001895% CI: [1.031, 1.132]ANCOVA
p-value: <0.000195% CI: [1.087, 1.194]ANCOVA
p-value: <0.000195% CI: [1.089, 1.197]ANCOVA
Secondary

Part B: Change From Baseline in Average FEV1 (Over 4 Hours) After 1st Dose

Change from baseline FEV1 in average FEV1 (over 4 hours) on Day 1

Time frame: Day 1

Population: Full analysis set.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hours) After 1st Dose0.144 LStandard Deviation 0.0762
0.30 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hours) After 1st Dose0.204 LStandard Deviation 0.1162
1 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hours) After 1st Dose0.224 LStandard Deviation 0.0905
3 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hours) After 1st Dose-0.017 LStandard Deviation 0.1284
p-value: <0.000195% CI: [1.119, 1.196]ANCOVA
p-value: <0.000195% CI: [1.11, 1.186]ANCOVA
p-value: <0.000195% CI: [1.068, 1.142]ANCOVA
Secondary

Part B: Change From Baseline in Average FEV1 (Over 4 Hrs) After 7 Days

Change from baseline in average FEV1 (over 4 hours) on Day 7 after morning dose

Time frame: Day 7

Population: Full analysis set.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hrs) After 7 Days0.083 LStandard Deviation 0.1223
0.30 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hrs) After 7 Days0.161 LStandard Deviation 0.1686
1 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hrs) After 7 Days0.206 LStandard Deviation 0.147
3 mgPart B: Change From Baseline in Average FEV1 (Over 4 Hrs) After 7 Days-0.095 LStandard Deviation 0.1702
p-value: <0.000195% CI: [1.153, 1.27]ANCOVA
p-value: <0.000195% CI: [1.136, 1.252]ANCOVA
p-value: <0.000195% CI: [1.071, 1.179]ANCOVA
Secondary

Part B: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1st Dose

Change from baseline FEV1 in peak FEV1 (over 4 hours) after first dose

Time frame: Day 1

Population: Full analysis set.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1st Dose0.253 LStandard Deviation 0.0772
0.30 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1st Dose0.311 LStandard Deviation 0.1532
1 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1st Dose0.337 LStandard Deviation 0.1108
3 mgPart B: Change From Baseline in Peak FEV1 (Over 4 Hours) After 1st Dose0.079 LStandard Deviation 0.0914
p-value: <0.000195% CI: [1.122, 1.203]ANCOVA
p-value: <0.000195% CI: [1.111, 1.19]ANCOVA
p-value: <0.000195% CI: [1.074, 1.152]ANCOVA
Secondary

Part B: Change From Baseline in Trough FEV1 After 7 Days

Change from Baseline FEV1 to Morning Trough FEV1 on Day 7 after morning dose

Time frame: Day 7

Population: Full analysis set.

ArmMeasureValue (MEAN)Dispersion
0.10 mgPart B: Change From Baseline in Trough FEV1 After 7 Days-0.051 LStandard Deviation 0.1254
0.30 mgPart B: Change From Baseline in Trough FEV1 After 7 Days-0.017 LStandard Deviation 0.1783
1 mgPart B: Change From Baseline in Trough FEV1 After 7 Days0.013 LStandard Deviation 0.1631
3 mgPart B: Change From Baseline in Trough FEV1 After 7 Days-0.097 LStandard Deviation 0.1389
p-value: 0.006695% CI: [1.022, 1.14]ANCOVA
p-value: 0.011595% CI: [1.017, 1.134]ANCOVA
p-value: 0.1895% CI: [0.982, 1.096]ANCOVA
Secondary

Part B: RPL554 Plasma Pharmacokinetic Parameter (Onset of Action)

Determination of onset of action (\>10% increase in FEV1 from pre- to post-first dose, censored at 120 minutes) on Day 1

Time frame: Day 1

Population: Patients with onset of action

ArmMeasureValue (MEDIAN)
0.10 mgPart B: RPL554 Plasma Pharmacokinetic Parameter (Onset of Action)37.0 mins
0.30 mgPart B: RPL554 Plasma Pharmacokinetic Parameter (Onset of Action)27.5 mins
1 mgPart B: RPL554 Plasma Pharmacokinetic Parameter (Onset of Action)19.0 mins
p-value: 0.47Hodges-Lehmann
p-value: 0.0059Hodges-Lehmann
Secondary

Part B: Safety and Tolerability / Blood Chemistry Safety Assessments

Number of patients with treatment-emergent blood chemistry abnormal laboratory assessments

Time frame: 1 day

Secondary

Part B: Safety and Tolerability / ECG - Heart Rate

Number of patients with treatment-emergent abnormal ECG parameters, heart rate in bpm

Time frame: Start of treatment to day 70

Secondary

Part B: Safety and Tolerability / ECG - QTcF

Number of patients with treatment-emergent abnormal ECG parameters, QTcF in msec

Time frame: Start of treatment to day 70

Secondary

Part B: Safety and Tolerability / Hematology Safety Assessments

Number of patients with treatment-emergent hematology abnormal laboratory assessments

Time frame: 1 day

Secondary

Part B: Safety and Tolerability / Supine Vital Signs - Blood Pressure

Number of patients with treatment-emergent abnormal vital signs (blood pressure in mm Hg)

Time frame: Start of treatment to day 1

Secondary

Part B: Safety and Tolerability / Supine Vital Signs - Pulse Rate

Number of patients with treatment-emergent abnormal vital signs (pulse rate in bpm)

Time frame: Start of treatment to day 1

Secondary

Part B: Safety and Tolerability / Urinalysis Safety Assessments

Number of patients with treatment-emergent urinalysis abnormal laboratory assessments

Time frame: 1 day

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