Title
Master Protocol for the Phase 1 Study of Cell Therapies in Multiple Myeloma
Master Protocol for the Phase 1 Study of Cell Therapies for the Treatment of Patients With Relapsed Refractory Multiple Myeloma, Including Long-term Safety Follow-up
Phase
Phase 1Lead Sponsor
Arcellx, Inc.Study Type
InterventionalStatus
RecruitingIndication/Condition
Relapsed and Refractory Multiple MyelomaIntervention/Treatment
CART-ddBCMA ...Study Participants
65Master protocol for cell therapy, Phase 1 proof-of-concept studies in relapsed and refractory multiple myeloma and includes long-term safety follow-up.
ARM 1 is a non-randomized, open label, multi-site Phase 1 study. CART-ddBCMA is a BCMA directed CAR with a non-scFv binding domain that has been deimmunized.
ARM 2 is a non-randomized, open label, multi-site Phase 1 study. Using the bivalent BCMA-Specific Adapter (SPRX001) and Universal CAR-Modified T cell (ARC-T Cells)
Chimeric Antigen Receptor T cells
Chimeric Antigen Receptor T cells plus SparX protein
Phase I study of BCMA-specific CAR-modified T-cell therapy using alternative binding domain, for the treatment of patients with relapsed and refractory multiple myeloma
Phase 1 Study of Bivalent BCMA-Specific Adapter (SPRX001) and Universal CAR-Modified T cell (ARC-T Cells) for the Treatment of Patients with Relapsed and Refractory Multiple Myeloma
Inclusion Criteria: Relapsed and refractory Multiple Myeloma treated with at least 3 prior regimens of system therapy including Proteosome Inhibitor (PI), immunomodulatory drugs (IMiD), and anti-CD38 antibody (CD38mab); or has "triple-refractory" disease Documented measurable disease Adequate organ function Life expectancy > 12 weeks, Eastern Cooperative Group Performance Status 0-1 Exclusion Criteria: Plasma Cell Leukemia or History of Plasma Cell Leukemia Patients with a history of severe hypersensitivity to DMSO should be excluded Contraindication to fludarabine or cyclophosphamide Severe uncontrolled intercurrent illness (e.g., infection) or laboratory abnormalities Active central nervous system disease involvement by malignancy or active CNS pathology