This phase I trial evaluates the side effects and best dose of donor-derived CAR T cells following allogeneic stem cell transplantation in treating patients with CD19 malignancies. T cells are infection fighting blood cells that can kill tumor cells. The T cells given have a new gene put in them that makes them able to recognize CD19, a protein on the surface of cancer cells. These CD19-specific T cells may help the body's immune system identify and kill CD19+ cancer cells. Giving 19-28z CAR T cells after stem cell transplantation from a donor (allogeneic) may reduce the risk of relapse (cancer coming back) after transplant.
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT04556266.
PRIMARY OBJECTIVE:
I. To determine the toxicity and maximum tolerated dose (MTD) of intravenously administered allogeneic, donor derived autologous CD19-28z chimeric antigen receptor-expressing T-lymphocytes (19-28z CAR T cells) administered following T-cell depletion allogeneic hematopoietic stem cell transplantation (TCD allo-HSCT) for patients with high-risk CD19+ malignancies.
SECONDARY OBJECTIVES:
I. To explore the rate of graft-versus-host disease (GVHD) following allogeneic 19-28z CAR T cell infusion.
II. To describe the cumulative incidence of relapse or progression of the disease as well as non-relapse mortality.
III. To assess the rate of secondary graft failure.
IV. To describe 1-year progression-free (PFS) and overall (OS) survival following TCD allo-HSCT followed by allogeneic 19-28z CAR T cell infusion for B cell malignancies expressing CD19.
V. To assess for the persistence of allogeneic 19-28z CAR T post-infusion.
VI. To explore the effect of allogeneic 19-28z CAR T cell infusions on immune reconstitution after allo-HSCT including its impact on numbers of circulating B cells.
OUTLINE: This is a dose-escalation study of 19-28z CAR T cells.
CONDITIONING REGIMEN: Patients undergo total body irradiation on days -9 to -6. Patients also receive thiotepa intravenously (IV) on days -5 and -4 and fludarabine IV on days -6 to -2.
TRANSPLANTATION: Patients undergo allogeneic hematopoietic stem cell transplantation on day 0. Patients then receive 19-28z CAR T cells IV over 15 minutes on day 30.
After completion of study treatment, patients are followed up on days 28 and 100, every 3 months for year 1, every 6 months for year 2, and then annually for up to 15 years.
Lead OrganizationMemorial Sloan Kettering Cancer Center
Principal InvestigatorMiguel-Angel Perales