Iomab-ACT: A Pilot Study of 131-I Apamistamab Followed by CD19-Targeted CAR T-Cell Therapy for Patients With Relapsed or Refractory B-Cell Acute Lymphoblastic Leukemia or Diffuse Large B-Cell Lymphoma
Trial Parameters
Brief Summary
This is a pilot study; patients will receive 131-I apamistamab prior to CAR T-cell infusion in order to determine the maximum tolerated dose of 131-I apamistamab is exceeded at 75 mCi, and if so, to assess the safety of a step-down dose of 50 mCi.
Eligibility Criteria
Patients with B-ALL or DLBCL (or subtypes thereof) who have relapsed or refractory disease will be eligible. Refractory disease is defined by failure to achieve at least a partial response or disease progression within 6 months of the last therapy. Patients who initially respond but subsequently demonstrate disease progression are considered to have relapsed disease Participant Inclusion Criteria: \- To be eligible for leukapheresis, patients must have a CD19+ B-cell malignancy with relapsed or refractory disease, defined below. To be eligible for 131-I apamistamab conditioning and treatment with 19-28z CAR T-cells, patients must additionally have detectable evidence of residual malignancy at the time of assessment prior to CAR T-cell infusion (as defined below), regardless of therapy administered following leukapheresis. a. Patients with diffuse large B-cell lymphoma (de novo or DLBCL transformed from an indolent lymphoma (follicular lymphoma, chronic lymphocytic leukemia \[Richter sy