Patients with primary mitral regurgitation undergoing mitral valve transcatheter edge-to-edge repair.

Incidence of death from any cause.

Incidence of cardiovascular death, defined as death attributable to myocardial ischemia and infarction, heart failure, cardiac arrest because of other or unknown cause, or cerebrovascular accident.

Incidence of new-onset or worsening signs and symptoms of heart failure that required urgent therapy and resulted in hospitalization, e.g. as assessed by patient interviews or medical records.

Incidence of unplanned surgical (mitral valve repair or replacement) or transcatheter re-intervention (re-do transcatheter edge-to-edge repair), e.g. as assessed by patient interviews or medical records.

Mitral regurgitation severity (0, 1+, 2+, 3+, 4+) as assessed by transthoracic echocardiography at discharge.

Mitral regurgitation severity (0, 1+, 2+, 3+, 4+) as assessed by transthoracic echocardiography at 1-year follow-up.