Anti-CD19, Dual Co-stimulatory (4-1BB, CD3ζ) Chimeric Antigen Receptor T-cells in Patients With Relapsed/Refractory Aggressive Lymphoma or Acute Lymphoblastic Leukemia (ALL)

Official Title

A Phase 1b/2 Multi-centre, De-centralized, Dose Selection Study of Autologous CD19-directed Chimeric Antigen Receptor (CAR) T-cells in Patients With Relapsed/Refractory Aggressive Lymphoma or Acute Lymphoblastic Leukemia (ALL)

Summary:

Autologous, unselected CD3+ lymphocytes collected from apheresis, transfected with a lentiviral vector containing a 2nd generation chimeric antigen receptor (CAR) consisting of a scFv recognizing CD19 and dual co-stimulatory intracellular signaling domains (4-1BB and CD3ζ).

Trial Description

Primary Outcome:

• Number and type of treatment-related adverse events.
• Number of dose limiting toxicities of anti-CD19 CAR T-cells
• Maximum concentration (Cmax).
• Time to maximum concentration (Tmax).
• Area-Under-the-Concentration-vs-time curve (AUC) in peripheral blood and/or bone marrow.
• Overall objective response rate (ORR: proportion of patients with confirmed responses of complete [CR] or partial [PR])

Anti-CD19/4-1BB/CD3ζ CAR T-cell: autologous, unselected CD3+ lymphocytes collected from whole blood or apheresis, transfected with a lentiviral vector containing a 2nd generation chimeric antigen receptor (CAR) consisting of a scFv recognizing CD19 and dual co-stimulatory intracellular signaling domains (4-1BB and CD3ζ). All patients will receive lymphodepleting, conditioning chemotherapy in the form of cyclophosphamide (500 mg/m2/day) and fludarabine (30 mg/m^2/day) on Days -5, -4, and -3 prior to a CAR T-cell intravenous, single dose administration on Day 0. Phase 1b: Dose Finding/Escalation Dose Level 1: 0.5 x 10^6/kg Dose Level 2: 1.0 x 10^6/kg Dose Level 3: 2.0 x 10^6/kg Phase 2: Expansion Patients will receive lymphodepleting chemotherapy as indicated prior to receiving the CAR T-cell intravenous, single dose administration on Day 0 at the RP2D as identified during Phase 1b.

View this trial on ClinicalTrials.gov