USFDA accepts Sentynl's NDA for CUTX-101

A product candidate for treatment of Menkes disease

Sentynl Therapeutics, Inc. (Sentynl), a U.S.-based biopharmaceutical company wholly-owned by Zydus Lifesciences (Zydus Group), and Fortress Biotech, Inc. (Nasdaq: FBIO) (Fortress) announced that the U.S. Food and Drug Administration (FDA) has accepted for filing and Priority review Sentynl's New Drug Application (NDA) for CUTX-101, the product candidate for the treatment of Menkes disease.

Menkes disease is a rare X-linked recessive pediatric disease caused by gene mutations of the copper transporter ATP7A. Recent estimates suggest a prevalence of 1 in 34,810 to as high as 1 in 8,664 live male births.

Sentynl's NDA is supported by positive topline clinical efficacy results for CUTX-101, demonstrating statistically significant improvement in overall survival for Menkes disease subjects who received early treatment with CUTX-101, with a nearly 80% reduction in the risk of death compared to an untreated historical control cohort. Median overall survival was 177.1 months for CUTX-101 early treatment cohort compared to 16.1 months for the untreated historical control cohort.

The NDA acceptance of CUTX-101 marks an important step towards our vision to transform lives and meaningfully impact patients, caregivers, and the rare disease community at large, said Punit Patel, President and CEO, Zydus Americas. We remain committed to providing access to path-breaking discoveries that can address unmet needs globally, as evident in the potential impact of CUTX-101 on Menkes disease patients and their families.

Menkes disease presents a difficult journey for patients and their caregivers, as ATP7A mutations impact the transport of copper to a range of organs and systems, such as the lungs, brain and heart. With no known cure or current FDA-approved treatments, death typically occurs between 2 to 3 years of age, said Matt Heck, President & Chief Executive Officer of Sentynl. We are eager for the FDA to review our application for CUTX-101, which has the potential to be the first FDA-approved therapy for this devastating condition.

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