Celltrion Files Marketing Authorization Application in Korea for Cosentyx Biosimilar CT-P55 Based on Positive Phase 1 Results


  • Celltrion has submitted a marketing authorization application to the Korea Ministry of Food and Drug Safety for CT-P55, a biosimilar of Cosentyx indicated for psoriasis and psoriatic arthritis.
  • The application is based on positive Phase 1 results from 172 healthy adults demonstrating pharmacokinetic equivalence, comparable safety, and similar immunogenicity to the reference product.
  • Celltrion plans to pursue additional regulatory approvals across global markets, which is expected to strengthen its biosimilar portfolio and drive long-term revenue growth.
  • However, approval is not guaranteed and depends on the regulator's final review; investors should weigh this uncertainty as a key risk factor.
  • [AI Summary]Celltrion's filing for CT-P55 in Korea is a neutral event with no immediate impact on capital structure or shareholder value. While the Phase 1 success is a positive development, the final approval timeline and market entry remain uncertain, with potential long-term strategic benefits from biosimilar market expansion.

KOSPI Filing Information


  • Report on Major Management Matters Related to Investment Decision (CTP55 (Cosentix Biosimilar) Application for Korean Product Approval)
  • Company: Celltrion (068270)
  • Submission: Celltrion, Inc.
  • Under KRX KOSPI Market Division

  • Shares: 221,633,364
  • Price: 173,100 KRW
  • Market Cap: 38,364.7 B KRW