Boston Scientific Initiates Global Study To Assess Sudden Cardiac Arrest Prevention Therapy In Patients With Diabetes Who Have Previously Experienced A Heart Attack
MADIT S-ICD Trial to Study EMBLEM™ MRI Subcutaneous Implantable Defibrillator (S-ICD) System; Trial Recruitment Part of Pilot Initiative to Increase Percentage of Females Enrolled in Clinical Studies

MARLBOROUGH, Mass., April 18, 2017 /PRNewswire/ -- Boston Scientific (NYSE: BSX) has initiated a worldwide study that will evaluate the survival benefit of patients treated with the EMBLEM™ MRI Subcutaneous Implantable Defibrillator (S-ICD) System who are aged 65 and older with a history of prior heart attack, diabetes and moderately reduced left ventricular ejection fraction. This subset of patients is at increased risk for sudden cardiac arrest (SCA), but not currently considered guideline-appropriate candidates for implantable cardiac defibrillators.  

This week, the first patient was enrolled in the Multicenter Automatic Defibrillator Implantation Trial with Subcutaneous Implantable Cardioverter Defibrillator (MADIT S-ICD) study by Dr. Michael Giudici, principal investigator and director of Arrhythmia Services at University of Iowa Hospitals and Clinics. The trial is intended to determine if the EMBLEM MRI S-ICD System improves survival as compared to patients remaining on their current medical therapy. The device is a treatment option for patients at risk of SCA that leaves the heart and vasculature untouched, thereby reducing the risk of some complications associated with transvenous implantable cardioverter defibrillators. Eliminating device leads within the vasculature is particularly important for patients with diabetes who often are at an increased risk of infection and vascular access issues.

"Our hypothesis is that the S-ICD device may reduce all-cause mortality in this high-risk cohort of cardiac patients with diabetes," said Dr. Valentina Kutyifa, principal investigator and research assistant professor of cardiology at the University of Rochester Medical Center. "The value of eliminating unnecessary patient complications by implanting a defibrillator which does not require intracardiac leads was an important factor in our decision to utilize the S-ICD device when designing this trial."

The prospective, randomized, multicenter MADIT S-ICD trial will enroll up to 1,800 patients at approximately 100 sites worldwide and is designed as one of two clinical studies piloting the company's WIN-Her™ Initiative which aims to ensure adequate representation of women in clinical trials. Between 2000 and 2007, the average number of women enrolled in U.S. cardiovascular device clinical trials was only one-third of the total study populations.1 The WIN-Her Initiative will provide recruiting materials customized for women participating at U.S. sites in an effort to increase the number of female enrollees.

"In addition to the knowledge we hope to gain from this population of patients with diabetes, we are excited for the opportunity to improve the broad applicability of the MADIT S-ICD trial results by increasing the enrollment of women in this study," said Kenneth Stein, M.D., senior vice president and chief medical officer, Global Health Policy and Rhythm Management, Boston Scientific. "Moreover, the trial emphasizes our continued commitment to expanding access to all patients who may benefit from this proven technology."

The EMBLEM MRI S-ICD System has been accepted for parallel review for a new indication by the U.S. Food and Drug Administration (FDA) and the Centers for Medicare & Medicaid Services. The two organizations will concurrently review the MADIT S-ICD trial data as well as other relevant information to determine FDA approval and Medicare coverage of the device for patients aged 65 and older with a history of prior heart attack, diabetes and moderately reduced left ventricular ejection fraction.

For more information on the EMBLEM MRI S-ICD System visit

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1 Dhruva SS, Bero LA, Redberg RF. Gender bias in studies for Food and Drug Administration premarket approval of cardiovascular devices. Circ Cardiovasc Qual Outcomes. 2011;4(2):165-171.   

SOURCE Boston Scientific