This pilot phase I trial studies the side effects of genetically engineered T cells, called B cell maturation antigen (BCMA)-specific chimeric antigen receptor (CAR)-expressing T lymphocytes, in treating patients with multiple myeloma that has returned after a period of improvement (relapsed) or does not respond to treatment (refractory). Taking white blood cells, called T cells, from a patient and modifying them in the laboratory may help identify and possibly kill cancerous cells. The modification is a genetic change, or gene transfer, to the normal T cells. These modified cells are called T cells expressing a CAR construct (CART)-BCMA- because they target a marker on multiple myeloma cells called BCMA.
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT02546167.
PRIMARY OBJECTIVES:
I. To evaluate the safety of CART-BCMA cells (BCMA-specific CAR-expressing T lymphocytes) for patients with relapsed/refractory multiple myeloma (MM).
SECONDARY OBJECTIVES:
I. To describe clinical outcomes, including response rates, minimal residual disease rates, progression-free and overall survival.
II. To assess the feasibility of manufacturing CART-BCMA cells.
TERTIARY OBJECTIVES:
I. To characterize CART-BCMA cells with respect to their expansion, persistence, homing, phenotype and function.
II. To evaluate for development of cellular and/or humoral immunity against CART-BCMA cells.
III. To evaluate effect of CART-BCMA cells on B cell and plasma cell compartments, including immunoglobulin levels.
IV. To determine the impact of CART-BCMA cells on systemic soluble immune factors in patients.
V. To assess BCMA and related surface antigens expression on MM cells, B cells, and plasma cells pre- and post-treatment.
OUTLINE:
The first cohort of patients will receive CAR T cells alone. If safe, all subsequent cohorts will receive lymphodepleting chemotherapy prior to the first CART-BCMA cell infusion.
LYMPHODEPLETING CHEMOTHERAPY: Patients receive cyclophosphamide intravenously (IV) on day -3.
CART-BCMA T CELL INFUSION: Patients receive autologous BCMA-specific CAR-expressing T lymphocytes IV on days 0, 1, and 2.
After completion of study treatment, patients are followed up at day 28, monthly up to 6 months, every 3 months for up to 2 years, and then periodically for up to 15 years.
Lead OrganizationUniversity of Pennsylvania/Abramson Cancer Center
Principal InvestigatorAdam David Cohen