This phase I trial studies the side effects of chimeric antigen receptor T-123 (CART123) cells in treating patients with acute myeloid leukemia that does not respond to treatment (refractory) or that has come back after previous treatment (relapsed). This research study takes some of the patient's white blood cells (T-cells) through a process called apheresis, and modifies them so that they can identify and possibly kill the cancerous cells. The modification is a genetic change, or gene transfer, to the normal T-cells. These modified cells are called CART123 cells and after they are modified they are given back to the patient through the vein. Drugs used in chemotherapy, such as fludarabine and cyclophosphamide, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving chemotherapy may help CART123 cells grow and survive in patients with acute myeloid leukemia.
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT03766126.
PRIMARY OBJECTIVES:
I. Assess the safety of autologous anti-CD123 CAR TCR/4-1BB-expressing T-lymphocytes (CART123) in acute myeloid leukemia (AML) subjects following lymphodepletion with cyclophosphamide + fludarabine.
II. Assess manufacturing feasibility.
SECONDARY OBJECTIVES:
I. Estimate the efficacy of at least 1 dose of CART123 cells in AML subjects.
II. Overall survival (OS).
III. Progression-free survival (PFS).
IV. Duration of response (DOR).
V. Need for rescue allogeneic hematopoietic cell transplantation (alloHCT).
VI. Determine persistence and trafficking of CART123 cells.
VII. Analyze CART123 bioactivity.
OUTLINE:
Patients receive fludarabine intravenously (IV) and cyclophosphamide IV for 3 days. Four days following completion of lymphodepleting chemotherapy, patients receive autologous anti-CD123 CAR TCR/4-1BB-expressing T-lymphocytes IV on days 0-2 in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up at 4, 7, 10, 14, 21, and 28 days, at 3, 6, 9, and 12 months, then every 6 months for 4 years, and then annually for up to 15 years.
Lead OrganizationUniversity of Pennsylvania/Abramson Cancer Center
Principal InvestigatorSaar Gill