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HeartWare Receives Conditional Approval From FDA To Enroll Supplemental Patient Cohort In Destination Therapy Trial

FRAMINGHAM, Mass., and SYDNEY, June 17, 2013 /PRNewswire/ -- HeartWare International, Inc. (Nasdaq: HTWR; ASX: HIN), a leading innovator of less invasive, miniaturized circulatory support technologies that are revolutionizing the treatment of advanced heart failure, today announced that the U.S. Food and Drug Administration (FDA) has granted conditional approval to an IDE (Investigational Device Exemption) Supplement that allows HeartWare to commence enrollment in an additional patient cohort for ENDURANCE, the Company's pivotal, Destination Therapy clinical study.

ENDURANCE is a randomized, controlled, unblinded, multi-center clinical trial to evaluate the use of the HeartWare ® Ventricular Assist System as a Destination Therapy in advanced heart failure patients.  The non-inferiority study completed enrollment of 450 patients with end-stage heart failure who had not responded to standard medical management and who were ineligible for cardiac transplantation.  Patients were randomly selected to receive either the HeartWare Ventricular Assist System or, as part of a control group, any alternative LVAD approved by the FDA for Destination Therapy, in a 2:1 ratio.

The primary endpoint of the trial is stroke-free (Modified Rankin Score  > 4) survival at two years, defined as alive on the originally implanted device, transplanted or explanted due to patient recovery. Secondary endpoints include adverse events such as bleeding and infection, as well as functional status, hospitalization, assessment of neuro-cognitive function and patient quality of life.  The final implant was conducted in May 2012, which will result in the final patient reaching the two-year follow up point in May 2014.

Supplemental Patient Cohort

FDA granted conditional approval to a protocol designed to confirm observations from ENDURANCE that sites adhering to more regular monitoring and management of patient blood pressure witnessed a notably lower incidence of neurological events.  

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