Clinical trial Recruiting at 74 sites Interventional Ages 18 and up

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 typeInterventional
Ages18 Years and up
SexAll
Enrollment1056 (estimated)
SponsorMedtronic Cardiovascular
Industry-sponsored
Locations85 sites (Birmingham, Alabama and 84 other locations)
StatusRecruiting
StartedOctober 23, 2017
Main results expectedJune 2027
Study endsJuly 7, 2036
Registry record updatedOctober 30, 2026
Trial IDNCT03242642 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

  • 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
  • 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.