MADIT-CRT Trial Meets Primary Endpoint( Landmark trial shows Boston Scientifi...),Health

Landmark trial shows Boston Scientific CRT-Ds slow the progression of heart failure in asymptomatic and mildly symptomatic patients

NATICK, Mass., June 23 /PRNewswire-FirstCall/ -- Boston Scientific Corporation (NYSE: BSX) and the University of Rochester Medical Center today announced that the landmark MADIT-CRT trial has met its primary endpoint. Preliminary results show Boston Scientific cardiac resynchronization therapy defibrillators (CRT-Ds) to be associated with a significant 29 percent reduction (p=0.003) in death or heart failure interventions when compared to traditional implantable cardioverter defibrillators (ICDs). High risk(1), asymptomatic or mildly symptomatic, New York Heart Association (NYHA) Class I and II(2) patients were enrolled in MADIT-CRT. The MADIT-CRT Executive Committee expects to present and publish the trial's full results later this year.

MADIT-CRT, sponsored exclusively by Boston Scientific, demonstrates that early intervention with cardiac resynchronization therapy can slow the progression of heart failure. It is the world's largest randomized NYHA Class I/II CRT-D trial, with more than 1,800 patients enrolled at 110 centers in 14 countries. The trial is being conducted under the leadership of Principal Investigator Arthur J. Moss, M.D., Professor of Medicine at the University of Rochester Medical Center.

"We are very encouraged by these initial positive results, and we are hopeful they will eventually lead to a wider population of heart failure patients being treated with CRT-D therapy," said Fred Colen, President, Boston Scientific CRM. "I would like to congratulate Dr. Moss, the Executive Committee and all the MADIT-CRT investigators on a well designed and well executed clinical trial. Boston Scientific is proud to continue the tradition of supporting a
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