Actinium Pharmaceuticals develops targeted radiotherapies for cancer using its Antibody Radiation Conjugates platform and alpha-emitting radioisotopes. Company updates commonly focus on ATNM-400, an Actinium-225 antibody radioconjugate studied in solid tumor models including prostate, lung, and breast cancer, and Actimab-A, or lintuzumab-Ac225, an Actinium-225 therapy targeting CD33 in acute myeloid leukemia.
Additional announcements describe radiochemistry work such as chelator-to-antibody ratio optimization, preclinical data presented at oncology and nuclear medicine meetings, and the company's broader radiotherapy platform across solid tumors, hematologic malignancies, and conditioning for cellular therapies.
Actinium Pharmaceuticals will host a KOL webinar on May 20, 2024, at 8:00 AM ET to discuss the Iomab-ACT commercial CAR T-cell therapy trial being conducted at the University of Texas Southwestern (UTSW). Dr. Farrukh Awan, an expert in leukemia and lymphoma treatment, will join as the principal investigator. Iomab-ACT, an ARC targeting CD45, aims to replace non-targeted chemotherapy in conditioning prior to cell and gene therapies. Phase 1 trial results showed no immune effector cell-associated neurotoxicity syndrome (ICANS) in treated patients and minimal Cytokine Release Syndrome (CRS). The CAR-T market, projected to grow at an 11% CAGR, presents a significant opportunity for Iomab-ACT, which targets an addressable patient population expected to reach 93,000 in the U.S. by 2030.
Actinium Pharmaceuticals announced that the Phase 3 SIERRA trial results of Iomab-B will be presented at the EHA 2024 Congress. The trial demonstrated significant survival benefits in older patients with relapsed or refractory acute myeloid leukemia (r/r AML) receiving an Iomab-B led bone marrow transplant (BMT). Patients with TP53 mutations saw a median overall survival of 5.49 months compared to 1.66 months for those not receiving Iomab-B. The trial enrolled high-risk patients and showed 92% 1-year survival and 69% 2-year survival rates in those receiving Iomab-B led BMT.
Actinium Pharmaceuticals announced that multiple abstracts highlighting its Antibody Radiation Conjugates Iomab-B and Actimab-A, along with novel linker technology for solid tumors, have been accepted for presentation at the 2024 Society of Nuclear Medicine & Molecular Imaging Annual Meeting. The abstracts feature improved survival with both Iomab-B and Actimab-A in high-risk acute myeloid leukemia patients, including TP53 mutations. Actinium's presence at the SNMMI showcases its leadership in developing ARCs, with a focus on targeted radiotherapy for blood cancers and solid tumors.
Actinium Pharmaceuticals, Inc. announced a KOL webinar to discuss its Iomab-ACT trial with a leading FDA approved CAR T-cell therapy at the University of Texas Southwestern. The webinar will highlight the potential billion-dollar market opportunity in lymphodepletion. Dr. Farrukh Awan will lead the trial, aiming to study Iomab-ACT with an FDA approved CAR-T cell therapy for the first time. The company presented positive phase 1 trial results at the Tandem Meetings, showing promising safety and efficacy profiles. With the expanding CAR-T market and the need for improved conditioning in cellular therapy, Iomab-ACT presents a revenue opportunity in line with the growing patient population for cell and gene therapies.
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