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Immutep Announces U.S. FDA Has Provided Feedback Confirming Successful Completion Of Project Optimus Requirements And Agreement On 30mg As The Optimal Biological Dose For Its Lead Immunotherapy Candidate, Eftilagimod Alfa

Author: Benzinga Newsdesk | October 13, 2025 07:07am
  • Confirmation of 30mg efti as optimal biological dose relevant for Immutep's oncology pipeline and potential future Biological License Applications (BLA)
  • Registrational TACTI-004 (KEYNOTE-F91) Phase III trial in first line non-small cell lung cancer now in process of opening clinical sites in the United States

 Immutep Limited ((ASX: IMM, NASDAQ:IMMP) ("Immutep" or "the Company"), a late-stage immunotherapy company targeting cancer and autoimmune diseases, today announces that positive and straightforward feedback has been received from the US Food and Drug Administration ("FDA") regarding the successful completion of Project Optimus requirements and agreement on 30mg as the optimal biological dose for eftilagimod alfa (efti).

Immutep's Chief Development Officer, Christian Mueller, said, "We are very thankful for the FDA's positive feedback and productive discussions over the past few years. The alignment on efti's optimal biologic dose has strategic relevance to our efti oncology programs and is a major de-risking event and building block towards future BLA filings. We are excited to successfully conclude this chapter of efti's clinical development and are intently focused on bringing this novel immunotherapy to market to help address the needs of cancer patients worldwide."

The agreement with the FDA on efti's optimal biological dosing carries strategic importance in the ongoing and future clinical development of this first-in-class immunotherapy, including the global TACTI-004 (KEYNOTE-F91) Phase III trial evaluating efti in combination with MSD's (Merck & Co., Inc., Rahway, NJ, USA) anti-PD-1 therapy KEYTRUDA® (pembrolizumab), and chemotherapy as first-line treatment for advanced or metastatic non-small cell lung cancer (1L NSCLC), regardless of PD-L1 expression. With the conclusion of Project Optimus, this registrational study is now in process of opening sites in the United States.

Posted In: IMMP

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