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    Breaking News

    TherOx Completes Enrollment in Study of Therapy System Designed to Improve AMI Outcomes

    Brings FDA submission for Supersaturated Oxygen Treatment one step closer.

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    Business Wire05.18.17
    TherOx Inc., a privately held medical device company focused on improved treatment of acute myocardial infarction (AMI), has completed enrollment in the IC-HOT (Evaluation of Intracoronary Hyperoxemic Oxygen Therapy) study. IC-HOT is a confirmatory study of the second-generation TherOx system that delivers Supersaturated Oxygen (SSO2) Therapy for reduction of infarct size after an AMI.
     
    The IC-HOT study enrolled 100 patients and is being conducted to support a PreMarket Approval submission to the U.S. Food and Drug Administration (FDA). The primary study objective is to collect confirmatory data supporting the safety and effectiveness of SSO2 Therapy in treatment of anterior AMI patients who have undergone successful percutaneous coronary intervention (PCI) with stenting within six hours of experiencing AMI symptoms.
     
    “Since the advent of angioplasty and stenting to treat heart attack we haven't seen any new treatment options to reduce infarct size in this vulnerable population, and SSO2 Therapy appears to fulfill this unmet need,” said Nainesh Patel, M.D., interventional cardiologist at Lehigh Valley Health Network and an investigator for the study.
     
    According to the American Heart Association, every year nearly 1 million people in the United States have heart attacks. Although PCI is the standard of care in treating AMI, for many patients it doesn’t do enough to reduce infarct size and achieve maximum clinical benefit.
     
    "SSO2 Therapy treats patients who have experienced the most serious large anterior wall heart attacks—patients who often have poor outcomes even after successful intervention,” said Frances Wood, M.D., interventional cardiologist at WakeMed Heart and Vascular-Structural Heart and study investigator. “This therapy is a promising new tool to reduce infarct size and thus improve outcomes for these higher risk patients.”
     
    SSO2 Therapy is intended to provide interventional cardiologists with the first treatment option beyond PCI to salvage heart muscle in heart attack patients. In SSO2 Therapy, the patient’s blood is supersaturated with oxygen and then returned directly to the targeted ischemic area of the heart through a small catheter. Adjunctive to PCI, SSO2 Therapy is intended to salvage the jeopardized myocardium and thus reduce infarct size. Multiple peer-reviewed studies have demonstrated the infarct size reduction achieved by SSO2 Therapy was clinically significant compared to PCI alone.
     
    “Completing enrollment in our IC-HOT study significantly advances us closer to our goal of improving treatment options in the U.S. for physicians and their heart attack patients,” said Kevin T. Larkin, president and CEO of TherOx.
     
    A heart attack is typically caused when blood and oxygen flow to the heart is blocked or reduced. If not quickly restored, irreversible damage to the heart muscle, or infarction, will occur. SSO2 Therapy is designed to reduce infarct size by boosting oxygen delivery to the heart muscle immediately after the coronary artery has been opened by PCI. The TherOx system creates
    SSO2 Therapy by mixing highly oxygenated saline with the patient’s blood and delivers it through a catheter directly to the targeted ischemic area of the heart.
     
    The first generation system to deliver SSO2 Therapy received the CE Mark and was successful in meeting the safety and effectiveness endpoints in the AMIHOT II trial. Statistical results from the AMIHOT II trial of SSO2 Therapy, together with PCI and stenting, demonstrated a relative reduction of 26 percent in infarct size compared to PCI and stenting alone.
     
    This second-generation system being studied in IC-HOT builds on the success of AMIHOT II and includes the additional benefits of shortening the treatment time to 60 minutes and expanding the myocardial treatment area to the entire left coronary system so that no ischemic area goes untreated. SSO2 Therapy supports the current guidelines for interventional cardiology procedures.
     
    TherOx is a privately held medical device company based in Irvine, Calif., focused on developing and commercializing SSO2 Therapy. The company's technology is limited by U.S. law to investigational use only.
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