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Pilot Study of Ensifentrine or Placebo Delivered Via pMDI in Hospitalized Patients With COVID-19

A Single-center, Pilot, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of Ensifentrine in the Recovery of Hospitalized Patients With COVID-19

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04527471
Enrollment
45
Registered
2020-08-26
Start date
2020-09-04
Completion date
2021-05-01
Last updated
2022-09-22

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

Conditions

Coronavirus Infection, Covid-19, SARS-CoV-2

Brief summary

This pilot study is being performed to assess the efficacy and safety of inhaled ensifentrine delivered via pMDI compared with a matching placebo in conjunction with standard of care treatments on recovery in patients hospitalized due to COVID-19 infection.

Detailed description

Expploratory endpoint, pilot study, not statistically powered go to protocol

Interventions

DRUGEnsifentrine Dose 1

Study drug delivered twice daily via pMDI

Placebo delivered twice daily via pMDI

Sponsors

Verona Pharma Inc
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

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

Inclusion criteria

* Capable of giving informed consent indicating that they understand the purpose of the study and study procedures and agree to comply with the requirements and restrictions listed in the informed consent form and in this protocol. * Patient must be at least 18 years of age and less than or equal to 80 years of age at the time of informed consent. * Males are eligible to participate or females of non-childbearing potential or WOCBP who have a negative pregnancy test at screening are eligible to participate. WOCBP and female partners of male participants agree to either abstinence or use at least one primary form of highly effective contraception not including hormonal contraception from the time of screening through Day 60 following the first dose of study medication. * Clinical status consistent with 3, 4 or 5 on the Ordinal scale: Hospitalized, not requiring supplemental oxygen; Hospitalized, requiring any supplemental oxygen; Hospitalized, requiring non-invasive ventilation or use of high flow oxygen devices. * Admission to hospital AND have a confirmed diagnosis of severe acute respiratory syndrome coronavirus (SARS-COV-2) infection confirmed by polymerase chain reaction (PCR) test AND displays at least one of the following: Respiratory rate \> 24 breaths per minute; new cough; new atypical chest pain; new dyspnea; oxygen saturation \< 97% at rest; chest x-ray with new changes consistent with COVID-related airspace disease. * Capable of complying with all study restrictions and procedures including ability to use the pMDI correctly.

Exclusion criteria

* Participation in any other clinical trial of an experimental treatment for COVID-19, unless related to an expanded access program as part of Standard of Care at screening or during study. * Evidence of multiorgan failure. * Requiring mechanical ventilation at screening. * Alanine Aminotransferase (ALT) or aspartate aminotransferase (AST) \> 5 X upper limit of normal (ULN) at screening. * Creatinine clearance \< 30 mL/min at screening. * Pregnancy or lactation at screening. * Allergy or other contraindication or one of ensifentrine. * In the opinion of the clinical team, progression to death is imminent and inevitable within the next 24 hours, irrespective of the provision of treatments. * Use of prohibited medications (theophylline, PDE4 inhibitors \[e.g. roflumilast, apremilast, crisaborole\] within 48 hours of screening or during study) * Any other reason that the Investigator considers makes the patient unsuitable to participate.

Design outcomes

Primary

MeasureTime frameDescription
Proportion of Patients With RecoveryDay 29Recovery = first day on which subject satisfies one of the following categories: not hospitalized, no limitations of activities; or not hospitalized, limitation of activities, home oxygen requirement, or both.

Countries

United States

Participant flow

Recruitment details

45 patients hospitalized with COVID-19 enrolled and randomized.

Pre-assignment details

45 patients randomized to receive either RPL554 2mg via pMDI BID or placebo via pMDI BID in addition to standard of care treatment for COVID-19 disease until discharged or Day 29, whichever was first.

Participants by arm

ArmCount
Ensifentrine + Standard of Care
30 subjects randomized to receive blinded, inhaled ensifentrine in addition to standard of care treatment for COVID-19 infection Ensifentrine Dose 1: Study drug delivered twice daily via pMDI
30
Placebo + Standard of Care
15 subjects randomized to receive blinded, inhaled placebo in addition to standard of care treatment for COVID-19 infection Placebo pMDI: Placebo delivered twice daily via pMDI
15
Total45

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event10
Overall StudyLost to Follow-up10

Baseline characteristics

CharacteristicTotalPlacebo + Standard of CareEnsifentrine + Standard of Care
2 or more Co-Morbidities20 Participants4 Participants16 Participants
Age, Continuous56.3 years
STANDARD_DEVIATION 14
51.5 years
STANDARD_DEVIATION 14.7
58.7 years
STANDARD_DEVIATION 13.3
COVID-19 Disease Severity (Moderate)45 Participants15 Participants30 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
44 Participants14 Participants30 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Black or African American
15 Participants6 Participants9 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
29 Participants8 Participants21 Participants
Region of Enrollment
United States
45 participants15 participants30 participants
Sex: Female, Male
Female
28 Participants9 Participants19 Participants
Sex: Female, Male
Male
17 Participants6 Participants11 Participants
Smoking Status (Current)1 Participants1 Participants0 Participants
Smoking Status (Previous)8 Participants1 Participants7 Participants
Supplemental Oxygen Use (Yes)44 Participants14 Participants30 Participants
Systolic Blood Pressure138 mmHg124 mmHg145 mmHg

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
1 / 300 / 15
other
Total, other adverse events
5 / 303 / 15
serious
Total, serious adverse events
1 / 300 / 15

Outcome results

Primary

Proportion of Patients With Recovery

Recovery = first day on which subject satisfies one of the following categories: not hospitalized, no limitations of activities; or not hospitalized, limitation of activities, home oxygen requirement, or both.

Time frame: Day 29

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Ensifentrine + Standard of CareProportion of Patients With Recovery29 Participants
Placebo + Standard of CareProportion of Patients With Recovery15 Participants
p-value: 1Fisher Exact

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