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Bronchodilator Effect of RPL554 Administered in Addition to Tiotropium/Olodaterol in Patients With COPD

A Phase II, Randomized, Double Blind, Placebo Controlled, Three-way Crossover Study to Assess the Bronchodilator Effect of RPL554 Administered in Addition to Open Label Tiotropium/Olodaterol in Patients With COPD

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03673670
Enrollment
79
Registered
2018-09-17
Start date
2018-07-16
Completion date
2018-11-13
Last updated
2019-10-10

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

Conditions

COPD

Keywords

COPD, Bronchodilation, FEV1

Brief summary

The study investigates the effect of 3 days of twice daily treatment of two different doses of RPL554 (a phosphodiesterase \[PDE\]3/4 inhibitor) or placebo, each administered in addition to once daily tiotropium/olodaterol (Respimat) in patients with moderate to severe chronic obstructive pulmonary disease (COPD). Patients will receive each of the three treatment combinations in a randomized sequence using a crossover design

Detailed description

RPL554 is a dual inhibitor of phosphodiesterase 3 (PDE3) and phosphodiesterase 4 (PDE4) which are known to have a role in modulating the inflammatory airway response in respiratory diseases, including COPD. PDE3 inhibitors act as bronchodilators whilst PDE4 inhibitors have anti-inflammatory properties and there is also evidence to suggest that combined inhibition of PDE3 and PDE4 can have additive or synergistic anti-inflammatory and bronchodilator. The two doses of RPL554 (1.5 mg and 6 mg)have been selected based on the results from prior studies investigating single and multiple ascending doses in healthy subjects, single doses in asthmatics, single/multiple ascending doses in COPD patients, and 3 days of dosing in COPD patients. These doses were demonstrated to be both effective as a bronchodilator and well tolerated. The purpose of the study is to investigate if RPL554 has an additive bronchodilator effect when administered in combination with a commonly used anticholinergic/β-agonist combination medication, tiotropium/olodaterol (Respimat), in this patient population measured by the peak forced expiratory volume in one second (FEV1), and forced vital capacity (FVC).

Interventions

DRUGPlacebo

A placebo solution

A PDE3/4 inhibitor

DRUGTiotropium/olodaterol (Respimat)

An anticholinergic/β-agonist combination medication

Sponsors

Verona Pharma plc
Lead SponsorINDUSTRY

Study design

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

Masking description

The nebulizer cup will be obscured so the contents are not visible to the subject and the blinded study staff.

Eligibility

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

Inclusion criteria

1. Written informed consent 2. Male or female aged 40 and 80 years 3. For males, not to donate sperm and either be sexually abstinent or use contraception as specified by the protocol. For females, be of non-childbearing potential or use a highly effective form of contraception 4. 12-lead ECG with heart rate between 45 and 90 beats per minute, QTcF ≤450 msec for males, and ≤ 470 msec for females, QRS interval ≤120 msec and no clinically significant abnormality including morphology 5. Screening Holter report with a minimum of 18 hours recording that is able to be evaluated for rhythm analysis showing no abnormality which indicates a significant impairment of patient safety or which may significantly impair interpretation 6. Capable of complying with all study restrictions and procedures including ability to use the study nebulizer and Respimat® correctly. 7. Body mass index (BMI) between 18 and 36 kg/m2 and minimum weight of 45 kg. 8. COPD diagnosis for at least 1 year and clinically stable COPD for 4 week 9. Post-bronchodilator (two puffs of salbutamol/albuterol followed by two puffs of ipratropium) spirometry at Screening: * Post-bronchodilator FEV1/forced vital capacity (FVC) ratio of ≤0.70 * Post-bronchodilator FEV1 ≥30 % and ≤70% of predicted normal * Demonstrates ≥150 mL increase from pre-bronchodilator FEV1 10. A chest X-ray showing no abnormalities, which are both clinically significant and unrelated to COPD. 12\. Meet the concomitant medication restrictions and be expected to do so for the rest of the study. 13\. Current and former smokers with smoking history of ≥10 pack years. 14. Capable of withdrawing from long acting bronchodilators for the duration of the study, and short acting bronchodilators for 8 hours prior to dosing.

Exclusion criteria

1. A history of life-threatening COPD including Intensive Care Unit admission and/or requiring intubation. 2. COPD exacerbation requiring oral or parenteral steroids, or lower respiratory tract infection requiring antibiotics, in the last 3 months 3. A history of one or more hospitalizations for COPD in the last 12 months 4. Intolerance or hypersensitivity to tiotropium, olodaterol, atropine, ipratropium, or RPL554. 5. Evidence of cor pulmonale or clinically significant pulmonary hypertension. 6. Other respiratory disorders 7. Previous lung resection or lung reduction surgery. 8. Use of oral COPD medications, except mucolytics, in the last 3 months 9. Pulmonary rehabilitation, unless such treatment has been stable in the last 4 weeks 10. History of, or reason to believe a patient has, drug or alcohol abuse within the past 5 years. 11. Inability to perform acceptable spirometry or whole body plethysmography 12. Received an experimental drug within 30 days or five half lives, whichever is longer. 13. Patients with uncontrolled disease that the Investigator believes are clinically significant. This includes any hepatic disease, or an alanine aminotransferase or aspartate aminotransferase\>2 x upper limit of normal (ULN). 14. Documented cardiovascular disease: arrhythmias, angina, recent (\<1 year) or suspected myocardial infarction, congestive heart failure, unstable or uncontrolled hypertension, or diagnosis of hypertension in the last 3 months 15. Use of non-selective oral β-blockers. 16. Major surgery (requiring general anesthesia) in the last 6 weeks or will not have fully recovered from surgery, or planned surgery through the end of the study. 17. A disclosed history or one known to the Investigator, of significant non compliance in previous investigational studies or with prescribed medications. 18. Required use of oxygen therapy, even on an occasional basis. 19. Symptomatic prostatic hyperplasia or bladder-neck obstruction or with narrow-angle glaucoma. 20. History of malignancy of any organ system within 5 years, with the exception of localized skin cancers (basal or squamous cell). 21. Clinically significant abnormal values for safety laboratory tests (hematology, biochemistry, virology or urinalysis) as determined by the Investigator 22. Any other reason that the Investigator considers makes the patient unsuitable to participate.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Peak FEV1 on Day 3Change from pre-dose at 5, 15 and 30 minutes and 1, 1.5, 2 & 4 hours on Day 3Change from baseline FEV1 to peak FEV1 (measured as the greatest value in the 4 hours post-dose after the morning dose) on Day 3

Secondary

MeasureTime frameDescription
Change From Baseline in AUC0-4h FEV1 on Day 3Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4 hours on Day 3 (after the morning dose)Change from baseline FEV1 to AUC FEV1 over 4 hours post-dose after the morning dose on Day 3. The endpoint is measured as AUC/interval length (average) and measured in liters. (Note: Endpoint is AUC/interval length (average) so the units are in liters.)
Change From Baseline in AUC0-12h FEV1 on Day 3Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4, 6, 8, 12 hours on Day 3 (after the morning dose)Change from baseline in AUC over 12 hours post-dose after the morning dose on Day 3. The endpoint is measured as AUC/interval length (average) and measured in liters (Note: Endpoint is AUC/interval length (average) so the units are in liters.)
Change From Baseline in Peak FEV1 on Day 1Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4 hours on Day 1 (after the morning dose), with the maximum change reportedChange from baseline FEV1 to peak FEV1 in the 4 hours post-dose after the morning dose on Day 1
Change From Baseline in Peak FEV1 After Evening Dose on Day 3Change from pre-dose to each of the ollowing timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4 hours on Day 3 (after the evening dose), with the maximum change reportedChange from baseline FEV1 to peak FEV1 in the 4 hours post-dose after the evening dose on Day 3
Change From Baseline in AUC0-12h FEV1 on Day 1Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4, 6, 8, 12 hours on Day 1 (after the morning dose)Change from baseline FEV1 to AUC FEV1 over 12 hours post-dose after the morning dose on Day 1. The endpoint is measured as AUC/interval length (average) and measured in liters (Note: Endpoint is AUC/interval length (average) so the units are in liters.)
Determination of Onset of Action on Day 1Change from pre-dose to the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2 hours on Day 1 (after the morning dose)Time to \>10% increase in FEV1 from pre-first dose, censored at 2 hours
Change From Baseline to Trough FEV1 on Day 4Change from pre-dose on Day 1 to pre-dose on Day 4Change from baseline to morning trough FEV1 on Day 4
Residual Volume on Day 3Change from pre-dose on Day 1 to the following timepoints: pre-dose, 1.25, 8.25 and 12.25 hours on Day 3 (after the morning dose)Change in residual volume during treatment
Functional Residual Capacity on Day 1Change from pre-dose to 1.25 hours on Day 1 (after the morning dose)Change in functional residual capacity during treatment
Functional Residual Capacity on Day 3Change from pre-dose on Day 1 to the following timepoints: pre-dose, 1.25, 8.25 and 12.25 hours on Day 3 (after the morning dose)Change in functional residual capacity during treatment
Specific Airway Conductance on Day 1Change from pre-dose to 1.25 hours on Day 1 (after the morning dose)Change in specific airway conductance during treatment
Specific Airway Conductance on Day 3Change from pre-dose on Day 1 to the following timepoints: pre-dose, 1.25, 8.25 and 12.25 hours on Day 3 (after the morning dose)Change in specific airway conductance during treatment
Residual Volume on Day 1Change from pre-dose to 1.25 hours on Day 1 (after the morning dose)Change in residual volume during treatment

Countries

United Kingdom, United States

Participant flow

Participants by arm

ArmCount
Low Dose RPL554 Then High Dose RPL554 Then Placebo
1.5 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then 6 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then placebo twice daily plus tiotropium 5/5 mcg once daily for 3 days with a 7-14 day washout between treatment periods
14
Low Dose RPL554 Then Placebo Then High Dose RPL554
1.5 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then placebo twice daily plus tiotropium 5/5 mcg once daily for 3 days then 6 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days with a 7-14 day washout between treatment periods
14
High Dose RPL554 Then Low Dose RPL554 Then Placebo
6 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then 1.5 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then placebo twice daily plus tiotropium 5/5 mcg once daily for 3 days with a 7-14 day washout between treatment periods
13
High Dose RPL554 Then Placebo Then Low Dose RPL554
6 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then placebo twice daily plus tiotropium 5/5 mcg once daily for 3 days then 1.5 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days with a 7-14 day washout between treatment periods
12
Placebo Then Low Dose RPL554 Then High Dose RPL554
Placebo twice daily plus tiotropium 5/5 mcg once daily for 3 days then 1.5 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then 6 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days with a 7-14 day washout between treatment periods
13
Placebo Then High Dose RPL554 Then Low Dose RPL554
Placebo twice daily plus tiotropium 5/5 mcg once daily for 3 days then 6 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days then 1.5 mg RPL554 twice daily plus tiotropium 5/5 mcg once daily for 3 days with a 7-14 day washout between treatment periods
13
Total79

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Treatment Period 1 (3 Days)Adverse Event000001
Treatment Period 1 (3 Days)Alpha 1 antitrypsin deficiency000001
Treatment Period 1 (3 Days)Physician Decision001000
Treatment Period 1 (3 Days)Withdrawal by Subject100000
Treatment Period 2 (3 Days)Adverse Event001010
Treatment Period 3 (3 Days)Adverse Event000010
Washout Period 2 (7-14 Days)Pre-dose FEV1 not 20% baseline000010

Baseline characteristics

CharacteristicLow Dose RPL554 Then High Dose RPL554 Then PlaceboTotalPlacebo Then High Dose RPL554 Then Low Dose RPL554Placebo Then Low Dose RPL554 Then High Dose RPL554High Dose RPL554 Then Placebo Then Low Dose RPL554High Dose RPL554 Then Low Dose RPL554 Then PlaceboLow Dose RPL554 Then Placebo Then High Dose RPL554
Age, Continuous65.5 years64.0 years61.0 years67.0 years63.0 years63.0 years64.5 years
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
1 Participants6 Participants1 Participants0 Participants2 Participants1 Participants1 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 Participants1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
13 Participants72 Participants11 Participants13 Participants10 Participants12 Participants13 Participants
Sex: Female, Male
Female
9 Participants49 Participants8 Participants8 Participants7 Participants8 Participants9 Participants
Sex: Female, Male
Male
5 Participants30 Participants5 Participants5 Participants5 Participants5 Participants5 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 750 / 740 / 76
other
Total, other adverse events
15 / 7515 / 748 / 76
serious
Total, serious adverse events
0 / 751 / 740 / 76

Outcome results

Primary

Change From Baseline in Peak FEV1 on Day 3

Change from baseline FEV1 to peak FEV1 (measured as the greatest value in the 4 hours post-dose after the morning dose) on Day 3

Time frame: Change from pre-dose at 5, 15 and 30 minutes and 1, 1.5, 2 & 4 hours on Day 3

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 on Day 30.565 LitersStandard Deviation 0.2783
6 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 on Day 30.506 LitersStandard Deviation 0.2506
Placebo and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 on Day 30.519 LitersStandard Deviation 0.2809
p-value: 0.16895% CI: [0.991, 1.052]ANCOVA
p-value: 0.73195% CI: [0.966, 1.025]ANCOVA
Secondary

Change From Baseline in AUC0-12h FEV1 on Day 1

Change from baseline FEV1 to AUC FEV1 over 12 hours post-dose after the morning dose on Day 1. The endpoint is measured as AUC/interval length (average) and measured in liters (Note: Endpoint is AUC/interval length (average) so the units are in liters.)

Time frame: Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4, 6, 8, 12 hours on Day 1 (after the morning dose)

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in AUC0-12h FEV1 on Day 10.333 LitersStandard Deviation 0.1815
6 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in AUC0-12h FEV1 on Day 10.308 LitersStandard Deviation 0.1854
Placebo and Tiotropium/OlodaterolChange From Baseline in AUC0-12h FEV1 on Day 10.303 LitersStandard Deviation 0.192
p-value: 0.09695% CI: [0.997, 1.043]ANCOVA
p-value: 0.86295% CI: [0.979, 1.025]ANCOVA
Secondary

Change From Baseline in AUC0-12h FEV1 on Day 3

Change from baseline in AUC over 12 hours post-dose after the morning dose on Day 3. The endpoint is measured as AUC/interval length (average) and measured in liters (Note: Endpoint is AUC/interval length (average) so the units are in liters.)

Time frame: Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4, 6, 8, 12 hours on Day 3 (after the morning dose)

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in AUC0-12h FEV1 on Day 30.390 LitersStandard Deviation 0.2426
6 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in AUC0-12h FEV1 on Day 30.347 LitersStandard Deviation 0.2219
Placebo and Tiotropium/OlodaterolChange From Baseline in AUC0-12h FEV1 on Day 30.337 LitersStandard Deviation 0.2447
p-value: 0.06795% CI: [0.998, 1.057]ANCOVA
p-value: 0.39595% CI: [0.984, 1.042]ANCOVA
Secondary

Change From Baseline in AUC0-4h FEV1 on Day 3

Change from baseline FEV1 to AUC FEV1 over 4 hours post-dose after the morning dose on Day 3. The endpoint is measured as AUC/interval length (average) and measured in liters. (Note: Endpoint is AUC/interval length (average) so the units are in liters.)

Time frame: Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4 hours on Day 3 (after the morning dose)

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in AUC0-4h FEV1 on Day 30.429 LitersStandard Deviation 0.2518
6 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in AUC0-4h FEV1 on Day 30.390 LitersStandard Deviation 0.2246
Placebo and Tiotropium/OlodaterolChange From Baseline in AUC0-4h FEV1 on Day 30.377 LitersStandard Deviation 0.2485
p-value: 0.30395% CI: [0.987, 1.043]ANCOVA
Secondary

Change From Baseline in Peak FEV1 After Evening Dose on Day 3

Change from baseline FEV1 to peak FEV1 in the 4 hours post-dose after the evening dose on Day 3

Time frame: Change from pre-dose to each of the ollowing timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4 hours on Day 3 (after the evening dose), with the maximum change reported

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 After Evening Dose on Day 30.453 LitersStandard Deviation 0.2625
6 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 After Evening Dose on Day 30.405 LitersStandard Deviation 0.2581
Placebo and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 After Evening Dose on Day 30.324 LitersStandard Deviation 0.2211
p-value: 0.00195% CI: [1.043, 1.123]ANCOVA
p-value: 0.00295% CI: [1.023, 1.101]ANCOVA
Secondary

Change From Baseline in Peak FEV1 on Day 1

Change from baseline FEV1 to peak FEV1 in the 4 hours post-dose after the morning dose on Day 1

Time frame: Change from pre-dose to each of the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2, 4 hours on Day 1 (after the morning dose), with the maximum change reported

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 on Day 10.490 LitersStandard Deviation 0.2219
6 mg RPL554 and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 on Day 10.467 LitersStandard Deviation 0.2393
Placebo and Tiotropium/OlodaterolChange From Baseline in Peak FEV1 on Day 10.445 LitersStandard Deviation 0.2306
p-value: 0.40495% CI: [0.984, 1.039]ANCOVA
Secondary

Change From Baseline to Trough FEV1 on Day 4

Change from baseline to morning trough FEV1 on Day 4

Time frame: Change from pre-dose on Day 1 to pre-dose on Day 4

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolChange From Baseline to Trough FEV1 on Day 40.186 LitersStandard Deviation 0.2496
6 mg RPL554 and Tiotropium/OlodaterolChange From Baseline to Trough FEV1 on Day 40.178 LitersStandard Deviation 0.2123
Placebo and Tiotropium/OlodaterolChange From Baseline to Trough FEV1 on Day 40.150 LitersStandard Deviation 0.2218
p-value: 0.11595% CI: [0.994, 1.055]ANCOVA
p-value: 0.11195% CI: [0.994, 1.055]ANCOVA
Secondary

Determination of Onset of Action on Day 1

Time to \>10% increase in FEV1 from pre-first dose, censored at 2 hours

Time frame: Change from pre-dose to the following timepoints: 5, 15 and 30 minutes and 1, 1.5, 2 hours on Day 1 (after the morning dose)

Population: Full analysis set

ArmMeasureValue (MEDIAN)
1.5 mg RPL554 and Tiotropium/OlodaterolDetermination of Onset of Action on Day 110.0 minutes
6 mg RPL554 and Tiotropium/OlodaterolDetermination of Onset of Action on Day 16.0 minutes
Placebo and Tiotropium/OlodaterolDetermination of Onset of Action on Day 111.0 minutes
p-value: 0.945Wilcoxon (Mann-Whitney)
p-value: 0.501Wilcoxon (Mann-Whitney)
Secondary

Functional Residual Capacity on Day 1

Change in functional residual capacity during treatment

Time frame: Change from pre-dose to 1.25 hours on Day 1 (after the morning dose)

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 1-0.344 LitersStandard Deviation 0.5097
6 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 1-0.294 LitersStandard Deviation 0.4524
Placebo and Tiotropium/OlodaterolFunctional Residual Capacity on Day 1-0.277 LitersStandard Deviation 0.4279
Secondary

Functional Residual Capacity on Day 3

Change in functional residual capacity during treatment

Time frame: Change from pre-dose on Day 1 to the following timepoints: pre-dose, 1.25, 8.25 and 12.25 hours on Day 3 (after the morning dose)

Population: Full analysis set

ArmMeasureGroupValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 38.25 hours-0.420 LitersStandard Deviation 0.5003
1.5 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 3Pre-dose on Day 3-0.278 LitersStandard Deviation 0.434
1.5 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 31.25 hours-0.490 LitersStandard Deviation 0.4654
1.5 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 312.25 hours-0.255 LitersStandard Deviation 0.4003
6 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 312.25 hours-0.155 LitersStandard Deviation 0.7788
6 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 31.25 hours-0.408 LitersStandard Deviation 0.6102
6 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 3Pre-dose on Day 3-0.206 LitersStandard Deviation 0.5925
6 mg RPL554 and Tiotropium/OlodaterolFunctional Residual Capacity on Day 38.25 hours-0.405 LitersStandard Deviation 0.6111
Placebo and Tiotropium/OlodaterolFunctional Residual Capacity on Day 3Pre-dose on Day 3-0.163 LitersStandard Deviation 0.5742
Placebo and Tiotropium/OlodaterolFunctional Residual Capacity on Day 38.25 hours-0.355 LitersStandard Deviation 0.6004
Placebo and Tiotropium/OlodaterolFunctional Residual Capacity on Day 31.25 hours-0.382 LitersStandard Deviation 0.561
Placebo and Tiotropium/OlodaterolFunctional Residual Capacity on Day 312.25 hours-0.075 LitersStandard Deviation 0.5881
Secondary

Residual Volume on Day 1

Change in residual volume during treatment

Time frame: Change from pre-dose to 1.25 hours on Day 1 (after the morning dose)

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 1-0.469 LitersStandard Deviation 0.5521
6 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 1-0.408 LitersStandard Deviation 0.4803
Placebo and Tiotropium/OlodaterolResidual Volume on Day 1-0.377 LitersStandard Deviation 0.481
Secondary

Residual Volume on Day 3

Change in residual volume during treatment

Time frame: Change from pre-dose on Day 1 to the following timepoints: pre-dose, 1.25, 8.25 and 12.25 hours on Day 3 (after the morning dose)

Population: Full analysis set

ArmMeasureGroupValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 3Pre-dose Day 3-0.323 LitersStandard Deviation 0.4548
1.5 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 31.25 hours-0.648 LitersStandard Deviation 0.5173
1.5 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 38.25 hours-0.526 LitersStandard Deviation 0.5594
1.5 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 312.25 hours-0.353 LitersStandard Deviation 0.4561
6 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 312.25 hours-0.236 LitersStandard Deviation 0.7566
6 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 3Pre-dose Day 3-0.313 LitersStandard Deviation 0.8946
6 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 38.25 hours-0.481 LitersStandard Deviation 0.4994
6 mg RPL554 and Tiotropium/OlodaterolResidual Volume on Day 31.25 hours-0.510 LitersStandard Deviation 0.6304
Placebo and Tiotropium/OlodaterolResidual Volume on Day 312.25 hours-0.094 LitersStandard Deviation 0.7118
Placebo and Tiotropium/OlodaterolResidual Volume on Day 31.25 hours-0.510 LitersStandard Deviation 0.6257
Placebo and Tiotropium/OlodaterolResidual Volume on Day 38.25 hours-0.471 LitersStandard Deviation 0.6186
Placebo and Tiotropium/OlodaterolResidual Volume on Day 3Pre-dose Day 3-0.184 LitersStandard Deviation 0.6274
Secondary

Specific Airway Conductance on Day 1

Change in specific airway conductance during treatment

Time frame: Change from pre-dose to 1.25 hours on Day 1 (after the morning dose)

Population: Full analysis set

ArmMeasureValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 10.064 1/kPa*secStandard Deviation 0.1148
6 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 10.042 1/kPa*secStandard Deviation 0.0483
Placebo and Tiotropium/OlodaterolSpecific Airway Conductance on Day 10.043 1/kPa*secStandard Deviation 0.1072
Secondary

Specific Airway Conductance on Day 3

Change in specific airway conductance during treatment

Time frame: Change from pre-dose on Day 1 to the following timepoints: pre-dose, 1.25, 8.25 and 12.25 hours on Day 3 (after the morning dose)

Population: Full analysis set

ArmMeasureGroupValue (MEAN)Dispersion
1.5 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 312.25 hours0.029 1/kPa*secStandard Deviation 0.0774
1.5 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 3Pre-dose Day 30.021 1/kPa*secStandard Deviation 0.608
1.5 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 38.25 hours0.059 1/kPa*secStandard Deviation 0.1312
1.5 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 31.25 hours0.064 1/kPa*secStandard Deviation 0.0824
6 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 38.25 hours0.048 1/kPa*secStandard Deviation 0.0733
6 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 312.25 hours0.032 1/kPa*secStandard Deviation 0.0629
6 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 31.25 hours0.050 1/kPa*secStandard Deviation 0.0682
6 mg RPL554 and Tiotropium/OlodaterolSpecific Airway Conductance on Day 3Pre-dose Day 30.046 1/kPa*secStandard Deviation 0.106
Placebo and Tiotropium/OlodaterolSpecific Airway Conductance on Day 312.25 hours0.021 1/kPa*secStandard Deviation 0.1071
Placebo and Tiotropium/OlodaterolSpecific Airway Conductance on Day 31.25 hours0.049 1/kPa*secStandard Deviation 0.1193
Placebo and Tiotropium/OlodaterolSpecific Airway Conductance on Day 38.25 hours0.037 1/kPa*secStandard Deviation 0.1125
Placebo and Tiotropium/OlodaterolSpecific Airway Conductance on Day 3Pre-dose Day 30.016 1/kPa*secStandard Deviation 0.089

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