Replacement of the mitral valve using a new device for patients with severe mitral regurgitation
Official title: Transcatheter Mitral Valve Replacement With the Medtronic Intrepid™ TMVR System in Patients With Severe Symptomatic Mitral Regurgitation - APOLLO Trial
Run by Medtronic Cardiovascular · NCT03242642 · Data updated 2026-11-12
This study is testing a new device to replace the mitral valve in patients with severe mitral regurgitation who can't use other treatments to see if it is safe and effective.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 1056 (estimated) |
| Sponsor | Medtronic Cardiovascular Industry-sponsored |
| Locations | 85 sites (Birmingham, Alabama and 84 other locations) |
| Status | Recruiting |
| Started | October 23, 2017 |
| Main results expected | June 2027 |
| Study ends | July 7, 2036 |
| Registry record updated | October 30, 2026 |
| Trial ID | NCT03242642 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are individuals with moderate to severe symptomatic mitral regurgitation who are deemed unsuitable for conventional treatments.
✕Probably not a fit
Patients with prior transcatheter mitral valve procedures, significant anatomical contraindications, or severe left ventricular dysfunction 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 clinical trial evaluates the Medtronic Intrepid™ Transcatheter Mitral Valve Replacement (TMVR) System in patients suffering from severe symptomatic mitral regurgitation. It is a multi-center, global, prospective, non-randomized interventional trial where all enrolled subjects will receive the study device. The trial aims to assess the safety and effectiveness of this innovative valve replacement approach for patients who are not suitable for existing treatment options.
Why it matters
Potential benefit: If successful, this procedure could provide a less invasive treatment option for patients with severe mitral regurgitation who currently have limited alternatives.
How similar studies have gone: Other studies involving transcatheter valve replacement techniques have shown promising results, indicating potential success for this approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Moderate to severe or severe symptomatic mitral regurgitation * Local site multidisciplinary heart team experienced in mitral valve therapies agrees that the subject is unsuitable for treatment with approved transcatheter repair or conventional mitral valve intervention Exclusion Criteria: * prior transcatheter mitral valve procedure with device currently implanted * anatomic contraindications * prohibitive mitral annular calcification * left ventricular ejection fraction \<25% * need for emergent or urgent surgery * hemodynamic instability
Where it's running
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University of Alabama Birmingham (UAB) Hospital
Birmingham, Alabama, United States Recruiting -
Abrazo Heart Hospital
Phoenix, Arizona, United States Recruiting -
PIH Health Good Samaritan Hospital
Los Angeles, California, United States Recruiting -
Kaiser Permanente Los Angeles Medical Center
Los Angeles, California, United States Recruiting -
Keck Hospital of the University of Southern California, USC
Los Angeles, California, United States Recruiting -
Cedars Sinai Medical Center
Los Angeles, California, United States Recruiting
Show 44 more locations
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El Camino Hospital
Mountain View, California, United States Recruiting -
Kaiser Permanente San Francisco Medical Center
San Francisco, California, United States Recruiting -
Stanford Hospital and Clinics
Stanford, California, United States Recruiting -
Los Robles Regional Medical Center
Thousand Oaks, California, United States Recruiting -
Hartford Hospital
Hartford, Connecticut, United States Recruiting -
Yale New Haven Hospital
New Haven, Connecticut, United States Recruiting -
JFK Medical Center
Atlantis, Florida, United States Recruiting -
Morton Plant
Clearwater, Florida, United States Recruiting -
HealthPark Medical Center
Fort Myers, Florida, United States Recruiting -
North Florida Regional Medical Center
Gainesville, Florida, United States Recruiting -
Baptist Medical Center Jacksonville
Jacksonville, Florida, United States Recruiting -
University of South Florida Health
Tampa, Florida, United States Recruiting -
Emory University
Atlanta, Georgia, United States Recruiting -
Piedmont Atlanta Hospital
Atlanta, Georgia, United States Recruiting -
Northwestern Memorial Hospital
Chicago, Illinois, United States Recruiting -
Rush University Medical Center
Chicago, Illinois, United States Recruiting -
MercyOne Des Moines Medical Center
Des Moines, Iowa, United States Recruiting -
University of Kansas Medical Center
Kansas City, Kansas, United States Recruiting -
The Johns Hopkins Hospital
Baltimore, Maryland, United States Recruiting -
Massachusetts General Hospital
Boston, Massachusetts, United States Recruiting -
Brigham and Women's Hospital
Boston, Massachusetts, United States Recruiting -
Beth Israel Deaconess Medical Center
Boston, Massachusetts, United States Recruiting -
University of Michigan Health System
Ann Arbor, Michigan, United States Recruiting -
Henry Ford Saint John Hospital
Detroit, Michigan, United States Recruiting -
Corewell Health
Grand Rapids, Michigan, United States Recruiting -
Abbott Northwestern Hospital
Minneapolis, Minnesota, United States Recruiting -
M Health Fairview University of Minnesota Medical Center - East Bank
Minneapolis, Minnesota, United States Recruiting -
Barnes-Jewish Hospital
St Louis, Missouri, United States Recruiting -
Providence St Patrick
Missoula, Montana, United States Recruiting -
Morristown Medical Center
Morristown, New Jersey, United States Recruiting -
Jersey Shore University Medical Center
Neptune City, New Jersey, United States Recruiting -
Northwell Health North Shore University Hospital
Manhasset, New York, United States Recruiting -
NYU Langone Medical Center
New York, New York, United States Recruiting -
The Mount Sinai Hospital
New York, New York, United States Recruiting -
New York-Presbyterian Hospital Columbia University Medical Center
New York, New York, United States Recruiting -
Montefiore Medical Center
New York, New York, United States Recruiting -
Saint Francis Hospital
Roslyn, New York, United States Recruiting -
The Christ Hospital
Cincinnati, Ohio, United States Recruiting -
University Hospitals Cleveland Medical Center
Cleveland, Ohio, United States Recruiting -
The Ohio State University Wexner Medical Center
Columbus, Ohio, United States Recruiting -
OhioHealth Riverside Methodist Hospital
Columbus, Ohio, United States Recruiting -
Integris Baptist Medical Center
Oklahoma City, Oklahoma, United States Recruiting -
Providence Saint Vincent Medical Center
Portland, Oregon, United States Recruiting -
Oregon Health & Science University Hospital
Portland, Oregon, United States Recruiting
+35 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Principal investigator: David Adams, MD — Icahn School of Medicine at Mount Sinai
- Study coordinator: Megan Wilder Fredrickson
- Email: rs.tmvrpivotaltrial@medtronic.com
- Phone: 612-469-1749
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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How TAVI and M‑TEER affect sleep‑disordered breathing
This will see if adults with aortic stenosis or mitral regurgitation who undergo TAVI or M‑TEER have improvements in sleep‑disordered breathing six months after their procedure.
-
Mitral and Tricuspid Valve-in-Valve/Valve-in-Ring Registry in Asia-Pacific
This registry tracks people in Asia-Pacific who have had or will have valve-in-valve or valve-in-ring procedures for mitral or tricuspid valve disease to learn about outcomes and safety after these transcatheter approaches.
-
Evaluating heart recovery after surgery for aortic regurgitation
This study looks at how heart surgery for aortic regurgitation helps people with heart problems feel better and recover by checking their heart function and quality of life afterward.
-
Evaluation of the AltaValve System for treating mitral regurgitation
This study is testing a new device called the AltaValve System to see if it can help people with mitral regurgitation who can't have surgery feel better and improve their heart function.
-
Registry for MitraClip treatment of severe mitral valve regurgitation
This study is testing how well the MitraClip G4 device works and is safe for people with severe mitral valve leakage who are getting a specific type of heart repair.
-
New treatment for severe mitral valve insufficiency using a transcatheter valve system
This study is testing a new, less invasive heart valve replacement for older adults with severe mitral valve problems who can't have regular surgery.
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.