This phase II trial studies how well T-cells taken from patients and modified in the laboratory work in treating patients with B-cell acute lymphoblastic leukemia that has failed to respond to or that has returned after chemotherapy. T cells, or white blood cells, are taken from patients and modified to target and possibly kill cancerous B-cells using a virus. Chemotherapy is given to make room for the new genetically modified cells and allow them to grow. The cells are then returned to patients by infusion.
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT02030847.
PRIMARY OBJECTIVES:
I. Evaluate the complete remission rate at day 28 after autologous T cells expressing cluster of differentiation (CD)19 chimeric antigen receptors expressing tandem TCRζ and 4-1BB (TCRζ/4-1BB) co-stimulatory domains (CART-19) therapy.
SECONDARY OBJECTIVES:
I. Evaluate best overall response rates.
II. Evaluate overall survival (OS), duration of remission (DOR) , relapse free survival (RFS), and event free survival (EFS).
III. Describe cause of death (COD) when appropriate.
IV. Describe response in terms of minimal residual disease (MRD) negative and positive testing using: flow cytometry (standard); quantitative molecular technologies (deep sequencing). (exploratory)
V. Evaluate manufacturing feasibility of CART-19.
VI. Assess safety and tolerability of CART-19.
VII. Characterize the in vivo cellular pharmacokinetic (PK) profile (levels, persistence, trafficking) of CART-19 cells in target tissues (blood, bone marrow, cerebral spinal fluid and other tissues if available).
VIII. Describe the incidence of immunogenicity to CART-19. Assess correlation for immunogenicity with loss of detectable CART-19 (loss of engraftment).
IX. For patients treated for relapse after allogeneic stem cell transplant (SCT), describe the risks of graft-versus-host disease (GVHD).
X. Evaluate bioactivity of CART-19 cells.
XI. Patient reported outcomes.
XII. Follow subjects infused with less than protocol-specified target dose.
OUTLINE:
CYTOREDUCTIVE CHEMOTHERAPY: Patients receive a chemotherapy regimen selected at the discretion of the investigator and dependent on the patient's history, disease burden, and other factors.
CART-19 INFUSION: Beginning 1-4 days after completion of chemotherapy, patients receive anti-CD19-CAR retroviral vector-transduced autologous T cells intravenously (IV).
After completion of study treatment, patients are followed up at day 28, monthly during months 3-6, quarterly for up to 1 year, and then annually for up to 15 years.
Lead OrganizationUniversity of Pennsylvania/Abramson Cancer Center
Principal InvestigatorNoelle Frey