PRIMARY
Percutaneous or Surgical Repair In Mitral Prolapse And Regurgitation for ≥60 Year-olds (PRIMARY)
AI Description
This is a prospective, multicenter, open-label, randomized trial comparing mitral valve (MV) transcatheter edge-to-edge repair (TEER) to surgical repair (1:1 ratio) in patients with primary, degenerative mitral regurgitation (MR). The trial will be conducted in the U.S., Canada, Germany, Spain, and the United Kingdom, and is designed as a strategy trial. Thus, all devices legally marketed for TEER of primary degenerative MR in a particular country are eligible to be used in this trial.
- Who can join
- adult, older adult
- Participants
- 450
- Expected completion
- 2034-01-01
- Funded by
- other
Conditions studied
Mitral Valve Regurgitation
What is being tested
- DEVICE: Transcatheter edge-to-edge repair
- PROCEDURE: Mitral valve repair
What it measures
- All-cause mortality, valve re-intervention, hospitalizations and urgent visits for heart failure, or onset of ≥ 2+ MR (by transthoracic echocardiogram (TTE)) composite score., All-cause mortality, valve re-intervention, hospitalizations/urgent visits for heart failure (without a blanking period), or onset of ≥ 2+ MR (by transthoracic echocardiogram (TTE)) from randomization to a minimum of 3 years post intervention. Composite score will be expressed as a Z-score - The Z-Score is a statistical measurement of a score's relationship to the mean in a group of scores. A Z-score of 0 is equal to the mean, with negative numbers indicating values lower than the mean and positive values higher than the mean., 3 years post intervention
Working with
National Heart, Lung, and Blood Institute (NHLBI)
Centers Participating
These centers are participating in this study. Reach out to them directly to learn more.
Baylor Scott & White The Heart Hospital – Dallas
Dallas, TX
Brigham and Women's Hospital
Boston, MA
Cedars-Sinai Medical Center
Los Angeles, CA
Cleveland Clinic
Cleveland, OH
Duke University Hospital
Durham, NC
Emory University Hospital
Atlanta, GA
Hospital of the University of Pennsylvania
Philadelphia, PA
J.W. Ruby Memorial Hospital
Morgantown, WV
Keck Hospital of USC
Los Angeles, CA
MaineHealth Maine Medical Center (Portland)
Portland, ME
Massachusetts General Hospital
Boston, MA
MUSC Health
Charleston, SC
NewYork-Presbyterian Hospital
New York, NY
Ochsner Medical Center – New Orleans
New Orleans, LA
Piedmont Atlanta Hospital
Atlanta, GA
Saint Luke’s Hospital of Kansas City
Kansas City, MO
Sandra Atlas Bass Heart Hospital at North Shore University Hospital
Manhasset, NY
Stanford Health Care
Stanford, CA
The Johns Hopkins Hospital
Baltimore, MD
UCSF Health
San Francisco, CA
University Medical Center
Charlottesville, VA
University of Michigan Health System
Ann Arbor, MI
Registry entry updated 2026-09-10
Deciding whether to join a study is your choice, and you can ask a study team questions before you decide anything.
If you would rather we did it with you, call us on (656) 206-4686.