Using a special device to close a heart opening to prevent strokes
Official title: GORE® CARDIOFORM Septal Occluder and Antiplatelet Medical Management for Reduction of Recurrent Stroke in Patients With Patent Foramen Ovale (PFO): the REDUCE Post Approval Study
Run by W.L.Gore & Associates · NCT03821129 · Data updated 2026-11-12
This study is testing a special device to close a heart opening in people who have had a stroke to see if it can help prevent future strokes.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 70 Years |
| Sex | All |
| Enrollment | 636 (estimated) |
| Sponsor | W.L.Gore & Associates Industry-sponsored |
| Locations | 45 sites (Tucson, Arizona and 44 other locations) |
| Status | Recruiting |
| Started | July 25, 2019 |
| Main results expected | October 2028 |
| Study ends | October 2031 |
| Registry record updated | July 30, 2026 |
| Trial ID | NCT03821129 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults diagnosed with an ischemic stroke of undetermined source and confirmed PFO.
✕Probably not a fit
Patients with a history of atrial fibrillation or other significant cardiac or neurological conditions may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study evaluates the safety and effectiveness of the GORE® CARDIOFORM Septal Occluder in patients with a Patent Foramen Ovale (PFO) who have experienced an ischemic stroke. Up to 636 adult participants will be enrolled across 40 U.S. centers, with follow-up assessments at 1 month, 6 months, 12 months, and annually for up to 5 years post-implant. The study also aims to assess the quality of operator education and the transferability of trial experiences to a post-market setting.
Why it matters
Potential benefit: If successful, this approach could significantly reduce the risk of recurrent strokes in patients with PFO.
How similar studies have gone: Previous studies have shown promise in using similar occluder devices for PFO closure, indicating potential for success in this approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Diagnosed with an ischemic stroke presumed to be an embolic stroke of undetermined source (ESUS) verified by a neurologist within the last 365 days prior to enrollment. * Presence of Patent Foramen Ovale (PFO), as determined initially by positive bubble study utilizing transesophageal echocardiography (TEE) and/or transcranial Doppler (TCD), demonstrating spontaneous right-to-left shunting or right-to-left shunting during Valsalva maneuver. * Patient is able to tolerate antiplatelet therapy * Note: Additional Inclusion Criteria may apply Exclusion Criteria: * History of or ongoing atrial fibrillation/flutter * Other co-morbidities including, but not limited to, mural thrombus, dilated cardiomyopathy, cardiac prosthetics (valves), severe native valve disease (including mitral valve stenosis), severe ventricular wall motion abnormalities, aortic dissection, significant atherosclerosis, vasculitis, pre-existing non-vascular neurologic disorders, pulmonary arteriovenous malformations, prior intracranial hemorrhage, severe disability related to prior stroke, autoimmune disorders that would increase the risk of stroke or thromboembolism, or associated with increased risk of infection or procedural complications, in the opinion of the investigator, left ventricular ejection fraction of \<40%, coexistent cause or intra-cardiac shunting (e.g. VSD or ASD) * Previous Myocardial Infarction * Rankin Scale sore greater than or equal to 3 at the time of procedure * Active infection that cannot be treated successfully prior to enrollment * Neurological deficits not due to stroke that may affect the patient's neurologic assessments * Evidence of hypercoagulable state, Uncontrolled diabetes mellitus, uncontrolled systemic hypertension or pulmonary hypertension at the time of screening or procedure * Sensitivity or contraindication to all proposed medical treatments or any device components * Pregnant, lactating, or intent on becoming pregnant through 24 months after enrollment. * Indications outside the parameters accepted for placement of GSO, including extensive congenital cardiac anomalies and defect diameters considered too large for closure with the device. * Atrial septal anatomy that is expected to necessitate placement of more than one GORE® CARDIOFORM Septal Occluder * Need for concomitant procedure(s) that may confound detection of adverse events related to device placement * Note: Additional Exclusion Criteria may apply
Where it's running
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Scripps Health La Jolla
La Jolla, California, United States Recruiting -
Loma Linda University Health
Loma Linda, California, United States Recruiting -
University of California - San Francisco
San Francisco, California, United States Recruiting -
Santa Barbara Cottage Hospital
Santa Barbara, California, United States Recruiting -
South Denver Cardiology Associates
Littleton, Colorado, United States Recruiting -
Medical Center of the Rockies
Loveland, Colorado, United States Recruiting
Show 39 more locations
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Yale University School of Medicine
New Haven, Connecticut, United States Recruiting -
Baptist Health Jacksonville
Jacksonville, Florida, United States Recruiting -
Naples Community Hospital
Naples, Florida, United States Recruiting -
University of SF (Tampa General Hospital)
Tampa, Florida, United States Recruiting -
Rush University Medical Center
Chicago, Illinois, United States Recruiting -
Northwestern University
Evanston, Illinois, United States Recruiting -
University of Iowa Hospitals & Clinic
Iowa City, Iowa, United States Recruiting -
Catholic Health Initiatives- Iowa Corp dba Iowa Heart
West Des Moines, Iowa, United States Recruiting -
Massachusetts General Hospital
Boston, Massachusetts, United States Recruiting -
University of Michigan
Ann Arbor, Michigan, United States Recruiting -
Minneapolis Heart Institute Foundation - Abbott Northwestern Hospital
Minneapolis, Minnesota, United States Recruiting -
Research Foundation SUNY Buffalo
Buffalo, New York, United States Recruiting -
Atrium Health
Charlotte, North Carolina, United States Recruiting -
Providence Heart & Vascular Institute
Portland, Oregon, United States Recruiting -
Lehigh Valley Hospital
Allentown, Pennsylvania, United States Recruiting -
Baylor College of Medicine-Houston
Houston, Texas, United States Recruiting -
The Methodist Hospital - Houston
Houston, Texas, United States Recruiting -
Baylor Scott & White Memorial Hospital
Temple, Texas, United States Recruiting -
St. Marks Hospital
Salt Lake City, Utah, United States Recruiting -
University of Utah
Salt Lake City, Utah, United States Recruiting -
University of Virginia
Charlottesville, Virginia, United States Recruiting -
Multicare Health Tacoma-Multicare Institute for Research & Innovation
Tacoma, Washington, United States Recruiting -
Charleston Area Medical Center (CAMC)
Charleston, West Virginia, United States Recruiting -
Aurora Health Care, Metro Inc.
Milwaukee, Wisconsin, United States Recruiting -
Medical College of Wisconsin, Inc.
Milwaukee, Wisconsin, United States Recruiting -
St. Mary's Hospital
Tucson, Arizona, United States Withdrawn -
Cleveland Clinic Florida
Weston, Florida, United States Active not recruiting -
Emory University
Atlanta, Georgia, United States Active not recruiting -
Alexian Brothers Medical Center
Elk Grove Village, Illinois, United States Withdrawn -
William Beaumont Hospital
Royal Oak, Michigan, United States Withdrawn -
Covenant Medical Center, Inc.
Saginaw, Michigan, United States Terminated -
University of Minnesota
Edina, Minnesota, United States Withdrawn -
Jersey Shore University / Hackensack UMC
Freehold, New Jersey, United States Withdrawn -
Columbia University Medical Center/NYPH
New York, New York, United States Terminated -
Medical University of South Carolina
Charleston, South Carolina, United States Withdrawn -
Tennova Healthcare
Knoxville, Tennessee, United States Withdrawn -
Vanderbilt University Medical Center
Nashville, Tennessee, United States Terminated -
Methodist Healthcare Systems of San Antonio d/b/a Methodist Hospital
San Antonio, Texas, United States Active not recruiting -
Sentara Cardiovascular Research Institute
Norfolk, Virginia, United States Terminated
Study contacts
- Study coordinator: Tammy DeLozier
- Email: GSO1801@wlgore.com
- Phone: 800-437-8181
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Remote Ischaemic Conditioning for Fatigue After Stroke 2
Aat least 12 weeks after stroke, adults with post-stroke fatigue will try a simple hand-arm cuff treatment at home to see if it helps reduce fatigue.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.