Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 5, 2026, 11:47 PM EDT

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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
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Conditions
COPD
Interventions
RPL554 Suspension, Placebo, Tiotropium/olodaterol (Respimat)
Drug
Lead sponsor
Verona Pharma, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA
Industry
Eligibility
40 Years to 80 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
2
States / cities
Winter Park, Florida • Greenville, South Carolina
Conditions
Non-cystic Fibrosis Bronchiectasis
Interventions
Nebulized Ensifentrine Suspension; 3 mg, Nebulized Placebo Solution
Drug
Lead sponsor
Verona Pharma, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA
Industry
Eligibility
18 Years to 80 Years
Enrollment
284 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
29
States / cities
Birmingham, Alabama • Los Angeles, California • Sacramento, California + 26 more
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Ensifentrine, Placebo
Drug
Lead sponsor
Verona Pharma, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA
Industry
Eligibility
40 Years to 80 Years
Enrollment
763 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
39
States / cities
Peoria, Arizona • Tempe, Arizona • Huntington Beach, California + 32 more
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Ensifentrine, Placebo
Drug
Lead sponsor
Verona Pharma, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA
Industry
Eligibility
40 Years to 80 Years
Enrollment
790 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
77
States / cities
Alabaster, Alabama • Andalusia, Alabama • Jasper, Alabama + 60 more