Voluntary Withdrawal of Alzheimer's Donepezil Patch US Phase 1 Trial, Avoiding 30 Billion KRW Clinical Cost


  • Icure voluntarily withdrew its US FDA Phase 1 clinical trial for the donepezil transdermal patch (IPI-401) for Alzheimer's disease
  • Reason for withdrawal: lack of business viability due to low-cost generic donepezil in the US market and failure to secure a partner to bear the approximately 30 billion KRW US clinical cost
  • The trial was a single-center, open-label, randomized, crossover Phase 1 study comparing the pharmacokinetics of IPI-401 patch twice weekly vs Aricept® oral once daily in healthy adults, targeting up to 40 subjects over about 12 months
  • Clinical trial plan approval date: 2021-04-28; withdrawal application date: 2026-05-21

KOSDAQ Filing Information


  • Major Management Matters Related to Investment Decisions (Voluntary Withdrawal of Clinical Trial Plan, etc.) (Voluntary Withdrawal of Donepezil Patch's US FDA Phase 1 Clinical Trial Plan)
  • Company: Icure Pharmaceutical (175250)
  • Submission: Icure Pharmaceutical Incorporation
  • Under KRX KOSDAQ Market Division

  • Shares: 37,558,368
  • Price: 2,170 KRW
  • Market Cap: 81.5 B KRW