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Actimab-A + CLAG-M
- Development stage
- Phase 1
- Lead developer
- Actinium Pharmaceuticals
- Modality
- Cytotoxic ADCs → Antibody-Drug Conjugates (ADCs) → Antibody Conjugates → Antibody-Based Therapeutics, Antibody-Radionuclide Conjugates → Antibody Conjugates → Antibody-Based Therapeutics, Cytokines & Interferons → Recombinant Proteins and Enzymes, Monoclonal Antibodies → Antibody-Based Therapeutics, Small Molecules
- Administration
- Intravenous
01
Overview
Actimab-A + CLAG-M is a combination therapeutic regimen developed by Actinium Pharmaceuticals for the treatment of relapsed or refractory acute myeloid leukemia (AML). Actimab-A is an antibody radio-conjugate (ARC) consisting of the anti-CD33 monoclonal antibody lintuzumab conjugated to the alpha-emitting radioisotope actinium-225 (Ac-225). CLAG-M is a salvage chemotherapy regimen comprising cladribine, cytarabine (Ara-C), filgrastim (G-CSF), and mitoxantrone. The scientific rationale for the combination is that CLAG-M provides rapid debulking of leukemia cells, while Actimab-A delivers precision CD33-targeted alpha-particle radiation to eliminate residual disease via double-strand DNA breaks. This regimen is particularly targeted at high-risk patients, including those with TP53 mutations, prior venetoclax therapy, or prior allogeneic stem cell transplant, and has demonstrated high rates of MRD-negativity in clinical trials.
- Other names
- lintuzumab-Ac225 + CLAG-M
02
Targets
CD33 (Myeloid cell surface antigen CD33)DNADNA polymerase familyCSF3R (Granulocyte colony-stimulating factor receptor)RNR (Ribonucleotide reductase)TOP2A (DNA topoisomerase II)
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