Therox receives FDA Approval for first Heart Attack Treatment since PCI to reduce Infarct size

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TherOx, Inc., a privately held medical device company focused on improving treatment of acute myocardial infarction (AMI),announced that the U.S. FDA granted pre-market approval for its Super Saturated Oxygen (SSO2) Therapy.

SSO2 Therapy provides interventional cardiologists with the first and only FDA-approved treatment beyond percutaneous coronary intervention (PCI) to significantly reduce muscle damage in heart attack patients.

SSO2Therapy delivers hyperbaric levels of oxygen directly to the ischemic heart muscle immediately after the coronary artery has been successfully opened by PCI (angioplasty and stenting). It is indicated for patients who suffer the most serious kind of heart attacks, left anterior descending ST-elevation myocardial infarction (LAD STEMI) –also known as the widow-maker –treated within six hours of symptom onset. SSO2Therapy is adjunctively administered immediately following successful stent placement, with no delay in PCI treatment. “Even after angioplasty with stenting, many heart attack patients suffer from irreversible damage to the heart muscle, which carries a poor prognosis in terms of mortality and the potential for future heart failure,” said Gregg W. Stone, M.D., professor of medicine, Columbia University Medical Center. “Super Saturated Oxygen is the only therapy shown in a pivotal randomized trial to reduce infarct size in patients with large anterior myocardial infarction, offering the potential to further improve outcomes in these high-risk patients despite successful primary angioplasty.

”According to the American Heart Association, every year approximately 750,000 people in the U.S. have heart attacks. Although PCI has been the standard of care in treating AMI for 25 years, many patients do not achieve maximum clinical benefit and suffer from reduced heart function.

2More than 30 percent of severe AMI patients develop heart failure3and of those, 50 percent will die within five years.4SSO2Therapy has been shown in multiple randomized prospective clinical trials to consistently and safely reduce infarct size in anterior AMI patients and thereby improve outcomes.

•A pivotal randomized controlled trial demonstrated a 26 percent relative reduction in infarct size compared to PCI alone.1oInfarct size reduction correlates strongly with reduction in future complications, including heart failure, hospitalizations and even death.

•Additional clinical trial data show left ventricular stability at 30 days with no deleterious enlargement.5,6

“We have repeatedly demonstrated thatSSO2Therapy significantly reduces infarct size among patients who suffer from large anterior AMIs, which are the most serious heart attacks,” said Kevin T. Larkin, president and chief executive officer of TherOx. “This FDA approval enables interventional cardiologists to provide the most advanced care available to further reduce infarct size, prevent heart failure and ultimately save lives.

” SSO2Therapy is indicated for the preparation and delivery of supersaturated oxygen to targeted ischemic regions perfused by the patient’s left anterior descending coronary artery immediately following revascularization by means of percutaneous coronary intervention (PCI) with stenting that has been completed within six hours after the onset of anterior acute myocardial infarction (AMI) symptoms caused by a left anterior descending artery infarct lesion.

About SSO2Therapy
A heart attack is typically caused when blood and oxygen flow to the heart is blocked or reduced and the heart’s tiny capillaries swell, further restricting blood flow. If not quickly restored, irreversible damage to the heart muscle, or infarction, will occur. SSO2Therapy is based on the known benefits of hyperbaric oxygen treatment in improving the body’s ability to heal. SSO2Therapy infuses superoxygenated blood to improve microvascular flow and has been shown to save heart muscle by reducing infarct size. Immediately after the coronary artery has been opened by PCI, SSO2Therapy delivers a one-time, 60-minute infusion of the patient’s superoxygenated blood to the targeted ischemic area of the heart through a small catheter. The superoxygenated blood helps reduce capillary swelling to restore blood flow to surrounding tissue and decrease infarct size.7,8SSO2Therapy is aligned with current guidelines for interventional cardiology procedures.

About TherOx, Inc.
TherOx is a privately held medical device company based in Irvine, California, focused on developing and commercializing SSO2Therapy for the sizeable AMI patient population to save hearts,improving and ultimately saving lives. For more information about TherOx, visit www.therox.com.