ORZEYFUL (oveporexton) Approved in Japan as the First and Only Medicine to Treat the Underlying Cause of Narcolepsy Type 1

Takeda (TOKYO:4502/NYSE:TAK) announced that the Japanese Ministry of Health, Labour and Welfare (MHLW) approved the use of ORZEYFUL (oveporexton) for the treatment of narcolepsy type 1 (NT1, narcolepsy with cataplexy) in adults. ORZEYFUL is a first-in-class oral orexin receptor 2 (OX2R) agonist and the only medicine indicated in Japan to treat the disease holistically rather than individual symptoms. The discovery of this new class of medicine originated in Takeda's laboratories in Japan. Takeda is proceeding with launch preparations and expects to make ORZEYFUL available as quickly as possible.

“Our discovery of the first orexin agonist is a successful representation of Japan-originated science that will directly impact people around the world living with narcolepsy type 1,” said Julie Kim, president and chief executive officer of Takeda. “With the potential to redefine narcolepsy type 1 care, ORZEYFUL is the first validation of our broader orexin strategy, demonstrating how scientific innovation can create new possibilities for patients and drive future growth for Takeda”

NT1 is a chronic, rare neurological disease driven by orexin deficiency. People experience a range of daytime and nighttime symptoms including excessive daytime sleepiness, cataplexy (sudden loss of muscle tone), disrupted nighttime sleep, sleep paralysis, hallucinations and cognitive symptoms. The persistent, 24-nature of the disease can severely impact many aspects of a person’s life, including work, education and social interactions. Despite the substantial disease impact, limited awareness and the complexity of symptoms can contribute to misdiagnoses and an average diagnostic delay of more than 10 years.

“NT1 is a condition that can have a significant impact on patients’ lives around the clock. Historically, treatment has primarily focused on managing individual symptoms. In recent years, advances in our understanding of the underlying pathophysiology of narcolepsy have led to the development of new therapeutic approaches,” said Yuichi Inoue, professor, Department of Somnology, Tokyo Medical University. “I look forward to seeing a broader range of treatment options become available, helping physicians tailor treatment to the needs of each individual patient.”

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