New clip device could spare High-Risk heart patients from open surgery
NCT ID NCT03271762
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether a device called MitraClip, which repairs the mitral valve through a small tube inserted in a blood vessel, works as well as traditional open-heart surgery for people with severe mitral regurgitation who are at high risk for surgery. About 330 participants will be randomly assigned to get either the MitraClip or surgery and followed for two years. The main goal is to see if the clip is non-inferior in preventing death, heart failure hospitalizations, and repeat valve procedures.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- MitraClip device (percutaneous mitral valve repair)
- What this could lead to
- If successful, this could offer a less invasive alternative to open-heart surgery for people with severe mitral regurgitation who are too frail for surgery.
- What could go wrong
- This is a non-inferiority trial, meaning it aims to show MitraClip is not worse than surgery, not that it is better. The device may still have risks like bleeding or valve complications, and long-term durability is unknown.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 330 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2018
- Expected to finish
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Jan 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Primary Mitral Regurgitation grade 3+ or 4+ * Patients in class II to IV NYHA * Mitral valve anatomy appropriate to MitraClip® therapy and mitral valve surgery * Adult patients judged eligible for mitral valve surgery by the local heart team but at high surgical risk defined as: age ≥ 75 years and STS score ≥ 6 % or one frailty index or one major organ system compromise or one possible procedure-specific impediment (using MVARC definitions) ; or age \< 75 years and STS score \> 8 % or at least one other high-risk criterion following the MVARC definitions; or age \> 80 years and judged at high risk for surgery by the local heart team * Isolated Mitral valve pathology * If revascularization procedures are required, they must be performed more than 30 days from intervention (D0) * Patients affiliate to social security Non-inclusion Criteria: * Life expectancy \< 1 year due to non-cardiac conditions * Secondary Mitral regurgitation * Evolving endocarditis or active endocarditis or inflammatory disease in the last 3 months * Patient who cannot tolerate procedural anticoagulation or post procedural antiplatelet regimen * Rheumatic mitral valve disease * Evidence of intracardiac, inferior vena cava or femoral venous thrombus * Valve anatomy not compatible with MitraClip® implantation (cf. colum 3 table 3 page 57) * Stroke or transient ischaemic event within 30 days before D0 * Modified Rankin Scale ≥4 disability (appendix 9) * TAVR within 30 days before D0-Untreated, clinically significant coronary artery disease requiring revascularization * Any percutaneous cardiovascular intervention within 30 days before D0 including ATC * Cardiovascular surgery, or carotid surgery within 30 days before D0 * Any prior mitral valve surgery or transcatheter mitral valve procedure * Need for any concomitant cardiac surgery including treatment of severe secondary tricuspid regurgitation in accordance with class I recommendation in 2017 ESC guidelines. Surgical treatment of mild or moderate secondary tricuspid regurgitation (Class IIa and IIb recommendations) can still be performed in the protocol according to the local heart team decison * NYHA functional class I * LVEF \< 30% * Primary MR grade 1 to 2 * Subjects in whom transesophageal echocardiography or transseptal catheterization are contraindicated or high-risk * Any condition preventing the patient from completing all protocol procedures (including compliance with guidelines directed medical therapy) and follow-up visits * Patient unable or unwilling to provide written, informed consent before study enrolment * Pregnant or nursing women * Vulnerable people: persons deprived of liberty; under trusteeship or under curatorship * Participation in another trial that would interfere with this trial Exclusion criteria * Not eligible for a MitraClip® intervention after Core Lab evaluation * Before randomization (D-21) the patient no longer fulfills eligibility criteria (inclusion criteria and non-inclusion criteria)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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CHU Félix Guyon
Saint-Denis, 97400, France
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CHU LYON
Lyon, France
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CHU de Rouen
Rouen, France
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Centre Cardiologique Du Nord
Saint-Denis, France
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Centre Chirurgical Marie Lannelongue
Le Plessis-Robinson, France
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Ch Annecy
Annecy, 74370, France
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Chru Brest
Brest, France
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Chru Lille
Lille, 59000, France
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Chru Tours
Tours, France
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Chu Angers
Angers, France
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Chu Bordeaux
Bordeaux, France
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Chu Grenoble
Grenoble, France
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Chu Nantes
Nantes, France
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Chu Poitiers
Poitiers, France
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Chu Rennes
Rennes, France
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Chu Saint Etienne
Saint-Etienne, 42277, France
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Clinique Du Millenaire
Montpellier, 34000, France
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Clinique Du Tonkin
Villeurbanne, 69100, France
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Clinique Pasteur
Toulouse, France
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Clinique de La Sauvegarde
Lyon, 69009, France
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Hopital Bichat
Paris, France
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Hopital Civil Strasbourg
Strasbourg, France
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Hopital Europeen Georges Pompidou
Paris, France
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Hopital Henri Mondor Aphp
Créteil, France
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Hopital La Pitie Salpetriere
Paris, France
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Hopital La Timone
Marseille, France
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Hopital Prive Le Bois Lille
Lille, 59000, France
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Hopital Rangueil
Toulouse, France
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Hopital St Joseph
Marseille, France
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Institut Hospitalier Jacques Cartier
Massy, France
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Institut Mutualiste Montsouris
Paris, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Earlier blood thinner may cut clot risk in heart procedures
- A simple pressure reading may expose hidden mitral valve leakage after keyhole repair
- Can a tiny clip fix a leaky heart valve and spare patients from Open-Heart surgery?
- Can a tiny device fix a leaky heart valve without Open-Heart surgery?
- AI ultrasound could unmask silent heart disease in seniors
- Can a new valve device fix a leaky heart without open surgery?