Other Percutaneous procedures beside balloon valvuloplasty for MS have been looked into. Percutaneous Leaflet Plication (Edge-to-Edge Leaflet Repair) is being explored as a way to increase the opening of the mitral valve by clamping down mitral leaflets. The clamps are delivered to the mitral through a catheter as with the balloon, and then clamped onto the mitral valve. Of the patients that received this treatment, 74% patients achieved surgical success, and at 1-year, 68% were saved from dying, 90% from having to have surgery or dying from the lack thereof, a 76.3% prognosis at three years.