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Actinium-225 RTX 2358

Drug Profile

Actinium-225 RTX 2358

Alternative Names: [Ac-225] RTX-2358; Actinium-225-RTX-2358; FAP-[Ac225]

Latest Information Update: 12 Dec 2025

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At a glance

  • Originator Ratio Therapeutics
  • Class Antineoplastics; Radioisotopes; Radiopharmaceuticals
  • Mechanism of Action Ionising radiation emitters
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    No
  • New Molecular Entity Yes

Highest Development Phases

  • Phase I/II Soft tissue sarcoma

Most Recent Events

  • 12 Nov 2025 Phase-I/II clinical trials in Soft tissue sarcoma (Late-stage disease, Second-line therapy or greater) in USA (IV) (NCT07156565)
  • 09 Sep 2025 Ratio Therapeutics plans phase I trial in Sarcoma in October 2025 (IV) (NCT07156565)
  • 05 Sep 2025 Preclinical trials in Soft tissue sarcoma in USA (IV), before September 2025

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