This phase I trial studies the side effects and best dose of CS1-chimeric antigen receptor (CAR) T therapy after chemotherapy in treating patients who have CS1 positive multiple myeloma that has come back or does not respond to treatment. Immune cells can be engineered to kill multiple myeloma cells by inserting a piece of deoxyribonucleic acid (DNA) into the immune cells using a lentiviral vector such as CS1, that allows them to recognize multiple myeloma cells. It is not yet known whether these engineered immune cells, CS1-CAR T cells, will kill multiple myeloma cells.
OUTLINE: This is a dose-escalation study of CS1-CAR T cells.
Patients undergo leukapheresis over 2-4 hours. Beginning 3-4 weeks, patients receive cyclophosphamide intravenously (IV) on days -4 and/or -3 or fludarabine IV and cyclophosphamide IV on days -5 to -3. Patients then undergo CS1-CAR T therapy over 10-15 minutes on day 0. After 28 days, patients may undergo an optional second CS1-CAR T therapy.
After completion of study treatment, patients are followed up at 1 day, at least every 2 days for up to a minimum of 14 days, weekly for 1 month, monthly for 1 year, then periodically for up to 15 years.
The following criteria is a partial list of reasons why patients may or may not be eligible to participate in this clinical trial. Further evaluation with a medical professional will be required to determine full eligibility.
The following criteria is provided for health care professionals.
The following is a listing of trial locations that are not currently open and accepting patients.
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