Takeda and Alkermes Detail Strong Clinical Results for Orexin Drugs in Narcolepsy – Head-to-Head Race Accelerates on September 09, 2025 agonists alixorexton Alkermes Cataplexy Clinical Trials Daytime Somnolence Excessive (qualifier value) Maintenance MWT Narcolepsy orexins oveporexton Phase 3 Takeda Wakefulness Test +