Study Investigating the Effect of 4 Doses of RPL554 Given in Addition to Tiotropium to Patients With COPD
Summary
The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →
Investigators
The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.
A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.
Sites
50 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.
- Pinnacle Research Group, Llc
Anniston, Alabama, United States
- California Research Medical Group, Inc
Fullerton, California, United States
- Southern California Institute for Respiratory Diseases, Inc.
Los Angeles, California, United States
- Innovative Clinical Research
Lafayette, Colorado, United States
- Meris Clinical Research
Brandon, Florida, United States
- Clinical Research of West Florida
Clearwater, Florida, United States
- Pulmonary Disease Specialists, Pa D/b/a Pds Research
Kissimmee, Florida, United States
- Medical Research of Central Florida, Llc
Leesburg, Florida, United States
- Clinical Trials of Florida, Llc
Miami, Florida, United States
- Peninsula Research, Ormond Beach, Llc
Ormond Beach, Florida, United States
- Medsol Clinical Research Center, Inc
Port Charlotte, Florida, United States
- Progressive Medical Research
Port Orange, Florida, United States
- Pasadena Center for Medical Research, Llc
St. Petersburg, Florida, United States
- Florida Pulmonary Research Institute, Llc
Winter Park, Florida, United States
- Columbus Regional Research Institute
Columbus, Georgia, United States
- Vitalink Research - Hamilton Mill
Dacula, Georgia, United States
- Vitalink Research - Duluth
Duluth, Georgia, United States
- Gwinnett Biomedical Research
Lawrenceville, Georgia, United States
- Iact Health
Rincon, Georgia, United States
- Vitalink
Winder, Georgia, United States
- Genesis Clinical Research and Consulting, Llc
Fall River, Massachusetts, United States
- Pulmonary Research Institute of Southeast Michigan
Farmington Hills, Michigan, United States
- Cities Research Center
Fridley, Minnesota, United States
- American Health Research
Charlotte, North Carolina, United States
- Clinical Research of Gastonia
Gastonia, North Carolina, United States
- Research Carolina of Huntersville
Huntersville, North Carolina, United States
- Clinical Research of Lake Norman
Mooresville, North Carolina, United States
- New Horizons Clinical Research
Cincinnati, Ohio, United States
- Aventiv Research, Inc
Columbus, Ohio, United States
- Aventiv Research, Inc
Dublin, Ohio, United States
- Crisor, Llc
Medford, Oregon, United States
- Vitalink Research - Anderson
Anderson, South Carolina, United States
- Lowcountry Lung and Critical Care, Pa
Charleston, South Carolina, United States
- Vitalink-Columbia
Columbia, South Carolina, United States
- Vitalink Research - Easley
Easley, South Carolina, United States
- Piedmont Research Partners, Llc
Fort Mill, South Carolina, United States
- Vitalink Research-Gaffney
Gaffney, South Carolina, United States
- Vitalink Research-Greenville
Greenville, South Carolina, United States
- Vitalink Research-Upstate
Greenville, South Carolina, United States
- Clinical Research of Charleston
Mt. Pleasant, South Carolina, United States
Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.
Drugs studied
No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →
Registration & key dates
Registry attributes as recorded on the ClinicalTrials.gov study record.
- Start
- 1 May 2019
- Primary completion
- 15 Nov 2019
- Completion
- 15 Nov 2019
- Last update posted
- 20 Nov 2020
- Registered enrollment
- 416
- Registry id
- NCT03937479
Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.