The New England Journal of Medicine Publishes Data from Phase 2b Trial of Oral Orexin Receptor 2 Agonist Oveporexton (TAK-861) in People with Narcolepsy Type 1

OSAKA, Japan and CAMBRIDGE, Massachusetts, May 14, 2025 – Takeda (TSE: 4502/NYSE:TAK) today announced that the New England Journal of Medicine published data from the Phase 2b trial of oveporexton (TAK-861) in people with narcolepsy type 1 (NT1). Oveporexton is an investigational oral orexin receptor 2 (OX2R)-selective agonist designed to restore orexin signaling to address the underlying orexin deficiency that causes NT1. Results demonstrated significant improvement in objective and subjective measures of excessive daytime sleepiness (EDS), reductions in cataplexy events and clinically meaningful improvements in disease severity and quality of life across all doses tested compared to placebo through eight weeks of treatment.

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