Actinium Treats First Patient In AML Study On Actimab-A Combo

 | Mar 05, 2020 10:56PM ET

Actinium Pharmaceuticals, Inc. (NYSE:ATNM) announced that the first patient has begun treatment in the third and final cohort of an investigator-led phase I study, evaluating a combination of Actimab-A with a chemotherapy regimen, CLAG-M.

This phase I study is being conducted in patients with relapsed or refractory acute myeloid leukemia (AML). Actimab-A is an antibody radiation conjugate (ARC). Actinium's lead application for ARCs is targeted conditioning, which is intended to selectively deplete a patient's disease or cancer cells and certain immune cells prior to a bone marrow transplant, gene therapy or adoptive cell therapy.

The study is being conducted at the Medical College of Wisconsin. The objectives of the study are to evaluate the safety, determine the maximum tolerated dose and response rates, progression-free survival, and overall survival. The overall response has been 86% so far, better than other approaches.

Patients in the third cohort will receive a chemotherapy cycle of CLAG-M (cladribine, cytarabine, G-CSF, and mitoxantrone), followed by 0.75 uCi/kg dose of Actimab-A on Day 6, 7 or 8. The cohort should be completed bymid-2020.

Shares of the company have slumped 50% in the past year compared with the Zacks Investment Research

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