Orca Q

MENLO PARK, Calif.--( BUSINESS WIRE )--Orca Bio, a late-stage biotechnology company committed to transforming the lives of patients through high-precision cell therapy, today presented clinical findings on the use of Orca-Q, its investigational second-generation allogeneic T-cell immunotherapy, without the use of any graft versus host disease (GvHD) prophylaxis in patients with diverse hematological conditions at the 66th American Society of Hematology (ASH) Annual Meeting. Preliminary data from a subset of the multicenter Phase 1 clinical trial of Orca-Q in patients with acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), chronic myeloid leukemia (CML) and myelofibrosis (MF) showed encouraging patient outcomes without the use of GvHD prophylaxis, including low rates of GvHD, infection and non-relapse mortality (NRM) in patients with fully matched donors. “With a conventional allogeneic stem cell transplant, patients typically receive a mix of strong immunosuppressive drugs to control GvHD. These can also lead to poor immune reconstitution and increase the risk of infections, organ damage and relapse,” said presenting author Mehrdad Abedi, MD, hematologist and professor of Medicine at UC Davis Comprehensive Cancer Center. “The possibility of achieving a cure without the need for preventative agents could expand the treatment landscape for patients with hematologic malignancies. While additional data is needed, these early findings suggest Orca-Q without GvHD prophylaxis may have the potential to transform our treatment approach.” This analysis evaluated 14 patients enrolled in the HLA-identical donor dose expansion arm who received myeloablative conditioning (MAC) with Orca-Q and either busulfan, fludarabine and thiotepa (BFT) or total body irradiation-based conditioning (TBI). Across all patients, the median time to engraftment of neutrophils and platelets was 11 days and rates of GvHD and serious infections were low. In the subgroup of patients who received Orca-Q and BFT, there was no chronic GvHD of any grade and two cases of grade 2 acute GvHD. There were no cases of non-relapse mortality (NRM) reported across all 14 patients. Relapse-free survival (RFS) and overall survival (OS) were both 85% among all patients, and both 90% in the BFT population. GvHD-free, relapse-free survival (GRFS) was 77% and 90% across all patients and in the BFT group, respectively. Across all patients, Orca-Q was manufactured reliably and delivered with vein-to-vein times of 72 hours or less across the U.S. “Our team is inspired by the possibility of developing a product that could eliminate the need for GvHD prophylaxis while preserving safety and efficacy, a concept representing a significant advancement for hematology and beyond,” said Nate Fernhoff, PhD, co-founder and chief scientific officer at Orca Bio. “We are highly encouraged by these preliminary data which provide an early glimpse into the future therapeutic potential of Orca-Q.” About Orca-Q Orca-Q is Orca Bio’s second-generation investigational allogeneic T-cell immunotherapy being evaluated in clinical trials for the treatment of multiple hematologic malignancies, including in patients with haploidentical donors. Orca-Q is a proprietary composition of stem cells combined with specific T-cell subsets derived from healthy donors and engineered by Orca Bio’s high-precision platform. About Orca Bio Orca Bio is a late-stage biotechnology company developing high-precision cell therapies for the treatment of cancer and autoimmune diseases. Our investigational products are designed to replace a patient’s diseased blood and immune system with a healthy one, with the goal of improving outcomes with fewer risks than the standard of care. Our manufacturing platform uses single-cell precision to create proprietary, uniquely-defined products that have the potential to transform allogeneic cell therapy. At Orca Bio, our mission is to make curative cell therapies both more effective and safer, and in doing so, push past the field’s current boundaries and redefine its future. For more information, visit www.orcabio.com .

MENLO PARK, Calif.--( BUSINESS WIRE )--Orca Bio, a late-stage biotechnology company committed to transforming the lives of patients through high-precision cell therapy, today announced that new clinical data will be presented in three oral sessions at the American Society of Hematology (ASH) Annual Meeting from December 7-10 in San Diego, CA. Three-year survival data with Orca Bio’s lead investigational allogeneic T-cell immunotherapy, Orca-T, will be presented from the multicenter Phase 1b clinical trial of patients with acute myeloid leukemia (AML), acute lymphocytic leukemia (ALL) and high-risk myelodysplastic syndrome (MDS). Additionally, initial feasibility, safety and efficacy data from an investigator-sponsored trial evaluating the combination of Orca-T with allogeneic CD19/CD22-CAR-T cells in patients with high-risk B-cell acute lymphoblastic leukemia (B-ALL) will be shared. In a third oral session, data from a multicenter Phase 1 clinical trial will be presented from patients treated with Orca Bio’s second-generation investigational allogeneic T-cell immunotherapy, Orca-Q, in patients with hematologic malignancies without the use of any post-treatment graft versus host disease (GvHD) prophylaxis. “We are pleased to present exciting new data from our lead clinical programs for patients with blood cancers, including three-year follow-up with Orca-T, our lead cell therapy candidate currently being evaluated in a pivotal Phase 3 clinical trial,” said Ivan Dimov, Ph.D., co-founder and chief executive officer of Orca Bio. "We also look forward to debuting the results of patients treated with Orca-Q without the use of any GvHD prophylaxis. Overall, these findings represent important progress toward our goal of delivering our high-precision approach to more patients who could potentially benefit." The ASH abstracts are now available at www.hematology.org . Details of the Orca Bio oral presentations follow: Oral Session : 732. Allogeneic Transplantation: Disease Response and Comparative Treatment Studies: Finding the Ideal Donor and Graft: Going Beyond HLA Title : Observational Comparison of Overall Survival between Phase 1b Orca-T and Registry-Based Post-Transplant Cyclophosphamide Patients Abstract Number : 694 Date and Time : Sunday, December 8, 2024 at 5:15 PM PT Location : San Diego Convention Center, Room 6A Oral Session : 704. Cellular Immunotherapies: Early Phase Clinical Trials and Toxicities: B Cell-directed CAR T Cell Therapies for ALL and for Autoimmunity Title : Safe and Effective Combination of Donor-Derived, Allogeneic CD19/CD22-CAR T Cells with Myeloablative Graft-Engineered Allo-HCT for High-Risk B-ALL Abstract Number : 679 Date and Time : Sunday, December 8, 2024 at 4:30 PM PT Location : Marriott Marquis San Diego Marina, Marriott Grand Ballroom 2-4 Oral Session : 722. Allogeneic Transplantation: Acute and Chronic GVHD and Immune Reconstitution: Monitoring, Understanding and Optimizing GVHD Interventions Title : Preliminary Safety and Efficacy of Myeloablative Orca-Q with No GvHD Prophylaxis for Treatment of Advanced Hematologic Malignancies Abstract Number : 382 Date and Time : Saturday, December 7, 2024 at 4:45 PM PT Location : San Diego Convention Center, Room 6CF About Orca-T Orca-T is an investigational allogeneic T-cell immunotherapy being evaluated in clinical trials for the treatment of multiple hematologic malignancies. Orca-T is comprised of highly purified regulatory T-cells, CD34+ stem cells and conventional T-cells derived from peripheral blood from either related or unrelated matched donors. Orca-T is currently being evaluated in a pivotal Phase 3 clinical trial which has completed enrollment at leading transplant centers across the U.S. Orca-T has received Regenerative Medicine Advanced Therapy (RMAT) designation from the U.S. Food and Drug Administration. About Orca-Q Orca-Q is Orca Bio’s second-generation investigational allogeneic T-cell immunotherapy being evaluated in clinical trials for the treatment of multiple hematologic malignancies, including in patients with haploidentical donors. Orca-Q is a proprietary composition of stem cells combined with specific T-cell subsets derived from healthy donors and engineered by Orca Bio’s high-precision platform. About Orca Bio Orca Bio is a late-stage biotechnology company developing high-precision cell therapies for the treatment of cancer and autoimmune diseases. Our investigational products are designed to replace a patient’s diseased blood and immune system with a healthy one, with the goal of improving outcomes with fewer risks than the standard of care. Our manufacturing platform uses single-cell precision to create proprietary, uniquely-defined products that have the potential to transform allogeneic cell therapy. At Orca Bio, our mission is to make curative cell therapies both more effective and safer, and in doing so, push past the field’s current boundaries and redefine its future. For more information, visit www.orcabio.com .