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Phase 4 COPD and Suboptimal Inspiratory Flow Rate

A Phase 4, Randomized, Double-Blind, Double-Dummy, Parallel-Group, Study Comparing Improvements in Lung Function in Adults With Severe to Very Severe Chronic Obstructive Pulmonary Disease and Suboptimal Inspiratory Flow Rate Following Once-Daily Treatment Over 12 Weeks With Either Revefenacin Inhalation Solution Delivered Via Standard Jet Nebulizer or Tiotropium Delivered Via a Dry Powder Inhaler (Spiriva® HandiHaler®)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05165485
Acronym
PIFR-2
Enrollment
404
Registered
2021-12-21
Start date
2022-01-07
Completion date
2023-11-20
Last updated
2024-12-20

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

Conditions

Chronic Obstructive Pulmonary Disease

Keywords

COPD, Peak Inspiratory Flow Rate, PIFR, Pulmonary Function

Brief summary

Study is a randomized, double-blind, double-dummy, parallel-group study evaluating efficacy and safety of revefenacin vs. tiotropium in adults with severe to very severe COPD and suboptimal PIFR.

Interventions

Revefenacin 175 mcg administered once daily for 84 days via nebulization

DRUGTiotropium

Tiotropium 18 mcg administered once daily for 84 days via Spiriva HandiHaler®

DRUGRevefenacin Placebo

Placebo for Revefenacin administered once daily for 84 days via nebulization

Placebo for Tiotropium administered once daily for 84 days via Spiriva HandiHaler®

Sponsors

Viatris Inc.
CollaboratorINDUSTRY
Theravance Biopharma
Lead SponsorINDUSTRY

Study design

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

Eligibility

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

Inclusion criteria

1. Participant is a male or female 40 years of age or older. 2. Participant is female and is nonpregnant and nonlactating. A woman of childbearing potential must have a documented negative urine pregnancy test at screening. Women are considered not to be of childbearing potential if they have had a total hysterectomy and/or bilateral tubal ligation (documentation for either must be provided before enrollment) or are at least 2 years postmenopausal. 3. During the study and for 30 days after receiving the last dose of study drug, women of childbearing potential and men capable of fathering children must agree to use highly effective birth control measures or agree to abstain from sexual intercourse. A highly effective method of birth control is defined as one that results in a low failure rate (i.e. \<1% per year) when used consistently and correctly, such as condom + diaphragm, condom + spermicide, diaphragm + spermicide, or intrauterine device \[IUD\] with documented failure rate of \<1% per year, or oral/injectable/implanted hormonal contraceptives used in combination with an additional barrier method. 4. Participant has a diagnosis of COPD, specifically, a post-ipratropium FEV1/FVC ratio \<0.7. 5. Participant has a post ipratropium 30% ≤ FEV1 \< 50% of predicted normal (using National Health and Nutrition Examination Survey-predicted equations) and absolute FEV1 \> 500 mL, or FEV1 \<30% predicted normal and absolute FEV1 \> 700 mL. 6. Participant has a PIFR \<60 L/min as measured by an In-Check™ device with resistance set to DISKUS at Visit 1A (if not combined with Visit 1B) and \< 55 L/min as measured by an In-Check™ device with resistance set to DISKUS at Visit 1B and Visit 2 prior to randomization. 7. Participant is capable of performing reproducible spirometry maneuvers (and plethysmography maneuvers for a subset of participants) as described by current American Thoracic Society (ATS) Guidelines. 8. Participant is an active or former smoker with a cigarette smoking history (or equivalent for cigar or pipe smoking history) of at least 10 pack-years. 9. Participant or legal guardian is willing and able to provide signed and dated informed consent to participate prior to initiation of any study related procedures. 10. Participant is willing and able to adhere to all study assessments/procedures. Care partner assistance is acceptable. 11. Participant is willing and able to adhere to all restrictions during their study participation as follows: * Use of recreational drugs * Medicinal marijuana * Excessive alcohol during the study period * Participation in another investigational drug study * Donation of ≥500 mL blood (or equivalent) 12. Participant (or care partner) based on the investigator's assessment is able to properly prepare and administer study medication administered from both nebulizer and HandiHaler® according to their respective Instructions for Use.

Exclusion criteria

1. Participant has a concurrent disease or condition that, in the opinion of the investigator, would interfere with study participation or confound the evaluation of safety and tolerability of the study drug. 2. Participant has a history of reactions or hypersensitivity to inhaled or nebulized anticholinergics. 3. Participant suffers from any medical condition that would preclude the use of inhaled anticholinergics, including narrow-angle glaucoma, symptomatic benign prostatic hyperplasia, bladder neck obstruction, or urinary retention. 4. Participant has Moderate to Severe Hepatic impairment (Child-Pugh B or C) or Severe Renal Insufficiency (i.e. a glomerular filtration rate \<30 mL/min/1.72m\^2). 5. Participant has been hospitalized for COPD or pneumonia within 8 weeks prior to Visit 1. 6. Participant is receiving a LABA or LABA/inhaled corticosteroid (ICS; either QD or BID) at a dose that has been stable for ≤ 30 days prior to screening. 7. Participant has used systemic corticosteroids within 8 weeks of Visit 1. 8. Participant has used antibiotics for respiratory tract infections within 8 weeks of Visit 1, or is using antibiotics prophylactically. 9. Participant received COVID-19 vaccine within 2 weeks prior to Visit 1.

Design outcomes

Primary

MeasureTime frameDescription
FEV1Baseline, Day 85 following 84 days of dosingChange from baseline in forced expiratory volume in one second (FEV1) at trough on Day 85

Secondary

MeasureTime frameDescription
OTE on FEV1Baseline, Day 30, Day 60, Day 85Trough Overall Treatment Effect (OTE) on FEV1. Overall is defined as the average change from baseline at trough across Day 30, Day 60, and Day 85.
FEV1Baseline, Day 30Change from baseline in FEV1 at trough on Day 30
FVCBaseline, Day 85Change from baseline in forced vital capacity (FVC) at trough on Day 85
80-mL Increase in FEV1 at Trough on Day 85Baseline, Day 85Participants with an 80-mL or greater change from baseline FEV1 at trough were counted as responders. Participants with change from baseline FEV1 \< 80 mL and participants with change from baseline FEV1 not obtained were counted as nonresponders.
First Occurrence of CompEx EventDate of first dose through date of last dose + 7 daysCount of participants experiencing events and time from first dose to first occurrence of a composite endpoint for exacerbations of COPD (CompEx) event were evaluated. The statistical analysis is a Cox proportional hazards model analysis of time to first event and the Revefenacin / Tiotropium hazard ratio is calculated and reported. Data are reported as the numbers of subjects with events and the hazard ratio is included in the Statistical Analysis section attached to the Outcome Measure data table. CompEx events are a composite of moderate or severe COPD exacerbation, premature termination from the study for any reason other than Sponsor decision, and clinically relevant deterioration in COPD. Clinically relevant deterioration events are defined as increases in COPD symptoms meeting specified criteria based on participant diary data.

Countries

United States

Participant flow

Participants by arm

ArmCount
Tiotropium
Active Tiotropium and Placebo for Revefenacin. Tiotropium: Tiotropium administered via Spiriva HandiHaler® device. Placebo for Revefenacin: Placebo administered as double blind, double dummy via nebulization.
191
Revefenacin
Active Revefenacin and Placebo for Tiotropium. Revefenacin: Revefenacin administered via nebulization. Placebo for Tiotropium: Placebo administered as double blind, double dummy via HandiHaler® device.
189
Total380

Baseline characteristics

CharacteristicTiotropiumRevefenacinTotal
Age, Continuous66 years67 years66 years
Age, Customized
40 to 64 years old
81 Participants79 Participants160 Participants
Age, Customized
65 years old and over
110 Participants110 Participants220 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants7 Participants9 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
176 Participants172 Participants348 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
13 Participants10 Participants23 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants1 Participants3 Participants
Race (NIH/OMB)
Asian
1 Participants1 Participants2 Participants
Race (NIH/OMB)
Black or African American
11 Participants14 Participants25 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants1 Participants3 Participants
Race (NIH/OMB)
White
175 Participants171 Participants346 Participants
Region of Enrollment
United States
191 Participants189 Participants380 Participants
Sex: Female, Male
Female
86 Participants90 Participants176 Participants
Sex: Female, Male
Male
105 Participants99 Participants204 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1910 / 189
other
Total, other adverse events
33 / 19138 / 189
serious
Total, serious adverse events
15 / 19116 / 189

Outcome results

Primary

FEV1

Change from baseline in forced expiratory volume in one second (FEV1) at trough on Day 85

Time frame: Baseline, Day 85 following 84 days of dosing

Population: All participants who received study treatment

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
TiotropiumFEV1101 mLStandard Error 17
RevefenacinFEV178 mLStandard Error 17
Comparison: The null hypothesis was that the Revefenacin - Tiotropium Least Squares Mean Difference was zero and the alternative hypothesis was that it was nonzero.p-value: 0.2295% CI: [-61, 14]Mixed Models Analysis
Secondary

80-mL Increase in FEV1 at Trough on Day 85

Participants with an 80-mL or greater change from baseline FEV1 at trough were counted as responders. Participants with change from baseline FEV1 \< 80 mL and participants with change from baseline FEV1 not obtained were counted as nonresponders.

Time frame: Baseline, Day 85

Population: All participants who received study treatment

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Tiotropium80-mL Increase in FEV1 at Trough on Day 8583 Participants
Revefenacin80-mL Increase in FEV1 at Trough on Day 8563 Participants
Comparison: The null hypothesis was that the Revefenacin / Tiotropium responder Odds Ratio was equal to 1 and the alternative hypothesis was that it was not equal to 1.95% CI: [0.39, 0.92]Regression, Logistic
Secondary

FEV1

Change from baseline in FEV1 at trough on Day 60

Time frame: Baseline, Day 60

Population: All participants who received study treatment

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
TiotropiumFEV179 mLStandard Error 17
RevefenacinFEV173 mLStandard Error 17
Comparison: The null hypothesis was that the Revefenacin - Tiotropium Least Squares Mean Difference was zero and the alternative hypothesis was that it was nonzero.95% CI: [-40, 29]Mixed Models Analysis
Secondary

FEV1

Change from baseline in FEV1 at trough on Day 30

Time frame: Baseline, Day 30

Population: All participants who received study treatment

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
TiotropiumFEV181 mLStandard Error 16
RevefenacinFEV183 mLStandard Error 16
Comparison: The null hypothesis was that the Revefenacin - Tiotropium Least Squares Mean Difference was zero and the alternative hypothesis was that it was nonzero.95% CI: [-29, 32]Mixed Models Analysis
Secondary

First Occurrence of CompEx Event

Count of participants experiencing events and time from first dose to first occurrence of a composite endpoint for exacerbations of COPD (CompEx) event were evaluated. The statistical analysis is a Cox proportional hazards model analysis of time to first event and the Revefenacin / Tiotropium hazard ratio is calculated and reported. Data are reported as the numbers of subjects with events and the hazard ratio is included in the Statistical Analysis section attached to the Outcome Measure data table. CompEx events are a composite of moderate or severe COPD exacerbation, premature termination from the study for any reason other than Sponsor decision, and clinically relevant deterioration in COPD. Clinically relevant deterioration events are defined as increases in COPD symptoms meeting specified criteria based on participant diary data.

Time frame: Date of first dose through date of last dose + 7 days

Population: All participants who received study treatment and were evaluable for rescue medication use (i.e., were not using nebulized albuterol for rescue or albuterol 4 times daily for maintenance)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
TiotropiumFirst Occurrence of CompEx Event56 Participants
RevefenacinFirst Occurrence of CompEx Event58 Participants
Comparison: The null hypothesis was that the Revefenacin / Tiotropium CompEx Event Hazard Ratio was equal to 1 and the alternative hypothesis was that it was not equal to 1.95% CI: [0.69, 1.45]Regression, Cox
Secondary

FVC

Change from baseline in forced vital capacity (FVC) at trough on Day 85

Time frame: Baseline, Day 85

Population: All participants who received study treatment

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
TiotropiumFVC198 mLStandard Error 35
RevefenacinFVC156 mLStandard Error 35
Comparison: The null hypothesis was that the Revefenacin - Tiotropium Least Squares Mean Difference was zero and the alternative hypothesis was that it was nonzero.95% CI: [-118, 35]Mixed Models Analysis
Secondary

OTE on FEV1

Trough Overall Treatment Effect (OTE) on FEV1. Overall is defined as the average change from baseline at trough across Day 30, Day 60, and Day 85.

Time frame: Baseline, Day 30, Day 60, Day 85

Population: All participants who received study treatment

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
TiotropiumOTE on FEV187 mLStandard Error 15
RevefenacinOTE on FEV178 mLStandard Error 15
Comparison: The OTE is defined as the average of the Day 30, Day 60, and Day 85 Revefenacin - Tiotropium Least Squares Mean differences. The null hypothesis was that the OTE Revefenacin - Tiotropium Least Squares Mean Difference was zero and the alternative hypothesis was that it was nonzero.95% CI: [-38, 20]Mixed Models Analysis

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