MitraClip Demonstrates Positive Results for High-Risk, Degenerative MR Patients

Results Show Treatment Provides Clinical Benefits and Improves Quality of Life for Patients with Debilitating Mitral Valve Disease Who Are at Prohibitive Surgical Risk


November 7, 2013
MitraClip, Abbott, Abbott Vascular

November 7, 2013 – Abbott announced clinically meaningful changes to quality of life, a reduction in rehospitalization for heart failure, and functional improvements for patients treated with the company's first-in-class, catheter-based MitraClip therapy for patients with degenerative mitral regurgitation (MR). Findings were presented at the 25th annual Transcatheter Cardiovascular Therapeutics (TCT) scientific symposium in San Francisco and simultaneously published in the Journal of the American College of Cardiology.  

The MitraClip device, which received U.S. Food and Drug Administration (FDA) approval last week, provides physicians with a breakthrough treatment option for patients suffering from MR. The MitraClip device is now available in the United States for patients with significant symptomatic degenerative MR who are at prohibitive risk for mitral valve surgery. Degenerative MR is a type of MR caused by an anatomic defect of the mitral valve of the heart. Prohibitive risk is determined by the clinical judgment of a heart team due to the presence of one or more surgical risk factors.

"The results of this study show that, even for some of the most ill and debilitated patients, the MitraClip system is safe and results in good clinical outcomes," said D. Scott Lim, M.D., associate professor of cardiovascular medicine at the University of Virginia Health System in Charlottesville, Va., and lead author of the publication. "These prohibitive-risk patients have had, until now, no approved therapies to improve the quality of their lives."

Video interview with Lim at TCT 2013

Data from 127 patients with degenerative MR at prohibitive surgical risk treated with the MitraClip device demonstrate:

  • Clinically meaningful changes to quality of life. Following MitraClip treatment, changes in SF-36 summary scales (a quality-of-life survey) were well above established thresholds showing minimum clinically important differences.      
  • A reduction in rehospitalization for heart failure of 73 percent.
  • Functional improvements, with 76 percent of patients with baseline NYHA Functional Class III improving to NYHA Functional Class I or II, and 65 percent of patients with baseline NYHA Functional Class IV improving to NYHA Functional Class I or II.
  • Favorable ventricular remodeling, with left ventricular end-diastolic and end-systolic volume decreased significantly at one year compared with baseline.
  • A majority of patients discharged to home (87 percent), rather than to nursing care.

Findings were presented during the TCT conference by Ted Feldman, M.D., FSCAI, director, cardiac catheterization laboratory and The Mr. and Mrs. Charles R. Walgreen Chair in Interventional Cardiology, NorthShore University Health System, Evanston, Ill. 

Multiple trials, published reports, and registries of patients treated with the MitraClip device consistently demonstrate a positive safety profile, reduction in mitral regurgitation, improvement in symptoms, and reduction in hospitalizations for heart failure, even in some of the most ill and debilitated patients.

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