NEW YORK, April 18, 2024 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a leader in the development of Antibody Radiation Conjugates (ARCs) and other targeted radiotherapies, today announced that results from the Phase 3 SIERRA trial of Iomab-B were presented in an oral presentation at the 50th Annual European Bone Marrow Transplant Society Meeting (EBMT) held in Glasgow, Scotland on April 14-17. The results showed that an Iomab-B led bone marrow transplant (BMT) results in higher rates of remissions and durable Complete Remission (dCR), which is the primary endpoint of the SIERRA trial, as well as significant improvement in overall survival in TP53 positive patients. Iomab-B is a targeted radiotherapeutic comprised of an anti-CD45 monoclonal antibody with the Iodine-131 radioisotope payload. The Phase 3 SIERRA trial enrolled 153 patients age 55 and above with active relapsed or refractory acute myeloid leukemia (AML) and compared outcomes of patients receiving Iomab-B BMT to those of patients receiving physician's choice of care in the control arm. In total, 24% (37/153) of the patients enrolled on SIERRA had a TP53 mutation, which is associated with limited treatment options and poor outcomes.
NEW YORK, April 1, 2024 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a leader in the development of Antibody Radiation Conjugates (ARCs) and other targeted radiotherapies, today announced that results from the Phase 3 SIERRA trial of Iomab-B in patients with a TP53 mutation have been accepted for oral presentation at the 50th Annual meeting of the European Bone Marrow Transplant Society (EBMT) being held April 14 – 17, 2024, in Glasgow, Scotland. Iomab-B is a targeted radiotherapy conditioning agent comprised of an anti-CD45 monoclonal antibody and Iodine-131 radioisotope payload. The Phase 3 SIERRA trial enrolled 153 patients with active relapsed or refractory acute myeloid leukemia (r/r AML) and compared outcomes of patients receiving Iomab-B and a bone marrow transplant (BMT) to those of patients receiving physician's choice of care in the control arm. In total, 24% of patients (37/153) in the SIERRA trial had a TP53 mutation, which is associated with poor outcomes, and 27 of the TP53 positive patients received Iomab-B. Iomab-B met the primary endpoint of durable Complete Remission (dCR) in the SIERRA trial with high-statistical significance (p<0.0001) and 100% of patients receiving a therapeutic dose of Iomab-B achieved BMT access and engagement.
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NEW YORK, Feb. 26, 2024 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a leader in the development of targeted radiotherapies, reported new analyses from the positive Phase 3 SIERRA trial of Iomab-B in oral presentations at the at the 2024 Tandem Meetings | Transplantation & Cellular Therapy (TCT) Meetings of ASTCT® (American Society for Transplantation and Cellular Therapy and CIBMTR® (Center for International Blood and Marrow Transplant Research). The presentations reported unprecedented 100% access to potentially curative bone marrow transplant (BMT) and engraftment in evaluable patients with active relapsed or refractory acute myeloid leukemia (r/r AML) and improved long-term survival outcomes greater than 2 years in patients age 65 or older. Patients with r/r AML age 65 and older who also have multiple comorbidities and high-risk cytogenetics have a poor prognosis are seldom offered BMT in current practice due to poor tolerance to induction and conditioning regimens and dismal outcomes. The SIERRA results presented at TCT demonstrate Iomab-B's ability to overcome multiple high-risk features including a TP53 genetic mutation, advanced age and treatment resistant disease. The two oral presentations at this year's TCT mark a total of ten oral presentations of the SIERRA results at various leading transplant, hematology and nuclear medicine conferences in the USA and Europe.
Actinium Highlights Improved Survival with Iomab-B in TP53 Positive Relapsed Refractory Acute Myeloid Leukemia Patients in the SIERRA Trial and Other Presentations at the 2024 Tandem Meetings | Transplantation & Cellular Therapy Meetings of ASTCT® and CIBMTR®
NEW YORK, Jan. 2, 2024 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a leader in the development of targeted radiotherapies, today announced that five abstracts have been accepted for presentation at the 2024 Tandem Meetings | Transplantation & Cellular Therapy (TCT) Meetings of ASTCT® (American Society for Transplantation and Cellular Therapy and CIBMTR® (Center for International Blood and Marrow Transplant Research) being held February 21 – 24, 2024 in San Antonio, Texas. Two oral presentations will highlight results from the positive Phase 3 SIERRA trial of Iomab-B (131I-Apamistamab), representing 10 oral presentations of the SIERRA results since they were first reported at the 2023 Tandem Meetings.
NEW YORK, Dec. 11, 2023 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a leader in the development of targeted radiotherapies, today highlighted four presentations at the 65th Annual American Society of Hematology Annual Meeting & Exposition (ASH) detailing results from the Phase 3 SIERRA trial of Iomab-B and Phase 1 trial of Actimab-A in combination with Venetoclax in patients with relapsed or refractory acute myeloid leukemia (r/r AML). Iomab-B and Actimab-A are the only two clinical stage targeted radiotherapies in development for patients with AML, which is known to be highly sensitive to radiation.
NEW YORK, Dec. 11, 2023 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a leader in the development of targeted radiotherapies, today announced that results from the Phase 3 SIERRA trial of Iomab-B were presented in an oral presentation at the 65th Annual American Society of Hematology Meeting & Exposition (ASH). The oral presentation highlighted significantly improved survival in patients with a TP53 mutation receiving Iomab-B.
NEW YORK, Dec. 8, 2023 /PRNewswire/ -- Actinium Pharmaceuticals, Inc. (NYSE AMERICAN: ATNM) (Actinium or the Company), a leader in the development of targeted radiotherapies, today announced that clinical data from its Iomab-B and Actimab-A programs will be featured in four presentations at the 65th Annual American Society of Hematology Annual Meeting & Exposition (ASH) being held in San Diego on December 9-12, 2023. These include an oral presentation and two poster presentations detailing results from the completed and positive Phase 3 SIERRA trial of Iomab-B in patients age 55 and above with active relapsed or refractory acute myeloid leukemia (r/r AML) as well as one poster presentation of Phase 1b results from the novel Actimab-A + Venetoclax combination trial for r/r AML.