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Biotechnology: Pharmaceutical Preparations
USFDAJun 15, 2026, 07:11 AM

Alkermes' Alixorexton Gets Orphan Drug Designation in U.S. and Europe

AI Summary

Alkermes plc announced that its investigational drug, alixorexton, has received Orphan Drug Designation (ODD) from both the U.S. Food and Drug Administration (FDA) for the treatment of idiopathic hypersomnia and the European Commission for the treatment of narcolepsy. Alixorexton is an oral, selective orexin 2 receptor agonist currently in development for narcolepsy types 1 and 2, and idiopathic hypersomnia. This designation provides incentives for the development of treatments for rare diseases and offers potential market exclusivity if the drug is approved.

Key Highlights

  • Alkermes' alixorexton granted Orphan Drug Designation (ODD) by the U.S. FDA for idiopathic hypersomnia.
  • Alixorexton also received ODD from the European Commission for narcolepsy.
  • Alixorexton is an investigational, oral, selective orexin 2 receptor agonist.
  • The drug is in development for narcolepsy type 1, narcolepsy type 2, and idiopathic hypersomnia.
  • Alixorexton previously received Breakthrough Therapy designation from the FDA for narcolepsy type 1.