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U.S. Department of Health and Human Services

Search Orphan Drug Designations and Approvals
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Generic Name: alpha-emitting radiolabeled small molecule that selectively binds to fibrobast activation protein-alpha (FAP) ([Ac-225]RTX-2358)
Date Designated: 06/09/2026
Orphan Designation: treatment of soft tissue sarcoma
Orphan Designation Status: Designated
FDA Orphan Approval Status: Not FDA Approved for Orphan Indication
Ratio Therapeutics, Inc.
One Design Center Place
Suite 19-601
Boston, Massachusetts 02210
United States

The sponsor address listed is the last reported by the sponsor to OOPD.
*Exclusivity Protected Indications are shown for approvals from 01/01/2013 to the present.
*Data for the Date Designation Withdrawn or Revoked field are shown for designations withdrawn or revoked after 08/12/2013.
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