Windtree Announces New Istaroxime Patent Filing for Preventing or Reducing the Risk of Acute Myocardial Arrhythmia

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Windtree Therapeutics
Windtree Therapeutics

WARRINGTON, Pa., Dec. 09, 2024 (GLOBE NEWSWIRE) -- Windtree Therapeutics, Inc. (“Windtree” or the “Company”) (NasdaqCM: WINT), a biotechnology company focused on advancing early and late-stage innovative therapies for critical conditions and diseases, today announced that it has filed a new istaroxime PCT patent application entitled, “ISTAROXIME DERIVATIVES THEREOF FOR PREVENTING OR REDUCING THE RISK OF ACUTE MYOCARDIAL ARRHYTHMIA.”

The patent filing expands upon data obtained from animal model testing and the istaroxime human clinical trials in acute heart failure (AHF) and early cardiogenic shock (ECS), including the latest positive Phase 2b istaroxime study in ECS patients. Istaroxime has also shown beneficial effects in rat studies with ischemia-reperfusion induced arrhythmias. Istaroxime-metabolite derivatives have shown superior properties in these models indicating their potential as promising therapeutics for the treatment of patients with ischemia needing improvement in cardiac function.

Arrythmias are irregular heartbeats that can impact the pumping function of the heart. Patients with heart failure and cardiomyopathy are at risk for arrythmias. Arrythmias in these patients can be caused by their underlying cardiac disease or by drugs used to treat the heart failure such as catecholamines. Arrythmias can impair proper filling of the heart with blood and, importantly, cardiac output to the body. Ventricular arrythmias are particularly dangerous and can be fatal.

“In our Phase 2 clinical program, we have not seen an increase in clinically significant cardiac arrhythmias in istaroxime treated patients while improving heart function and blood pressure in treated patients,” said Dr. Steve Simonson, CMO and SVP of Windtree. “We believe this characteristic may be related to SERCA2a activation by istaroxime and it has the potential to differentiate istaroxime from current drug treatments for cardiogenic shock and AHF including inotropes and vasopressors. With the results of our clinical program thus far and the additional animal model data, we determined there are unique aspects that warrant filing for intellectual property protection.”

About Istaroxime
Istaroxime is a first-in-class dual-mechanism therapy designed to improve both systolic and diastolic cardiac function. Istaroxime is designed as a positive inotropic agent that increases myocardial contractility through inhibition of Na+/K+- ATPase with a complimentary mechanism that facilitates myocardial relaxation through activation of the SERCA2a calcium pump on the sarcoplasmic reticulum enhancing calcium reuptake from the cytoplasm. Data from multiple Phase 2 studies in patients with early cardiogenic shock or acute decompensated heart failure have demonstrated that istaroxime infused intravenously significantly improves cardiac function and blood pressure without increasing heart rate or the incidence of cardiac rhythm disturbances.