Actinium Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical firm dedicated to developing and commercializing treatments, primarily focusing on those for bone marrow transplant (BMT) or other cellular and adoptive cell therapies. Its leading drug candidate, I-131 apamistamab (known as Iomab-B), is currently in a crucial Phase III clinical trial for its role in conditioning elderly patients with relapsed or refractory acute myeloid leukemia prior to BMT. Additionally, Iomab-B is being evaluated in a Phase I study for its use with CD19-targeted CAR T-cell therapy, a partnership with Memorial Sloan Kettering Cancer Center.