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Genetically Engineered Cells (CD22-CAR T Cells) for the Treatment of Recurrent or Refractory B Cell Malignancies

Trial Status: closed to accrual

This phase Ib trial studies the side effects and how well cell therapy (CD22-CAR T cells) works for the treatment of B cell malignancies that have come back (recurrent) and does not respond to treatment (refractory). The antigen CD22 is commonly found on B cell cancers. In this study, a CD22 gene and a type of virus (lentivirus; a virus similar to HIV) are used in making the cells (CD22-CAR T cells). The chimeric antigen receptor (CAR) is a genetically-engineered receptor made so that immune cells can recognize and respond to a specific molecule, such as CD22 protein. This uses a portion of an antibody to CD22 and part of a molecule that activates or ‘turns on’ the immune cell. Together, the CAR may help these T cells find the cancer in the body. Giving chemotherapy (fludarabine and cyclophosphamide) before CD22-CAR T cells may help prepare the immune system to accept the CD22-CAR T cells.