CD123 Redirected T Cells for AML in Pediatric Subjects

Acute Myeloid Leukemia, in Relapse Clinical Trial

Official title: Phase 1 Study of Lentivirally Transduced T Cells Engineered to Contain Anti-CD123 Linked to TCRζ and 4-1BB Signaling Domains in Pediatric Subjects With Refractory or Relapsed Acute Myeloid Leukemia

Status Active, not recruiting

Clinical Trial Summary

Phase 1 open-label study to estimate the safety, manufacturing feasibility, and efficacy of intravenously administered, lentivirally transduced T cells expressing anti-CD123 chimeric antigen receptors expressing tandem TCRζ and 4-1BB (TCRζ /4-1BB) costimulatory domains in pediatric subjects with relapsed/refractory Acute Myeloid Leukemia (AML).

Clinical Trial Description

This is a Phase 1 study to determine the safety, manufacturing feasibility, and efficacy of CART123 cells following lymphodepleting chemotherapy in pediatric subjects with relapsed/refractory AML. Subjects will receive CART123 cells via a single IV infusion at a dose of 2x10^6 CART123 cells/kg, following lymphodepleting chemotherapy. The total dose administered to each subject will be based on the subject's body weight obtained at the time of apheresis. The minimum acceptable dose for infusion is 1x10^5 CART123 cells/kg. There will be a 28-day stagger between the first 3 subject infusions, such that the next subject may not receive treatment (lymphodepleting chemotherapy plus CART123 cells) until the previous subject has completed their Day 28 safety follow-up visit and a DLT assessment has been performed. Subsequent infusions will be staggered by a minimum of 14 days. It is recommended that subjects with marrow aplasia at Day 28+/-5 undergo an allogeneic hematopoietic cell transplantation (alloHCT) as a rescue strategy. If required, this procedure will be performed as part of routine care, outside of the scope of this research study; however, subjects will continue to be followed onstudy. All subjects must, therefore, have a previously identified stem cell donor as part of their eligibility to participate in this study. All subjects will be followed monthly for up to 6 months after the CART123 cell infusion (Day 0). Thereafter, subjects will be transitioned into LTFU for up to 15 years post infusion. ;

Related Conditions & MeSH terms

• Acute Myeloid Leukemia, in Relapse
• Acute Myeloid Leukemia, Pediatric
• Acute Myeloid Leukemia, Refractory
• Leukemia
• Leukemia, Myeloid
• Leukemia, Myeloid, Acute

• NCT number: NCT04678336
• Study type: Interventional
• Source: University of Pennsylvania
• Status: Active, not recruiting
• Phase: Phase 1
• Start date: February 15, 2021
• Completion date: January 2036