Gene therapy using an integrating vector Allogeneic hematopoietic stem cell transplant at any time not permitted Prior allogeneic hematopoietic cell transplant Prior allogeneic hematopoietic cell transplant Previous allogeneic hematopoietic stem cell transplant Prior allogeneic hematopoietic stem cell transplants Allogeneic hematopoietic stem cell transplant Prior allogeneic transplant for any hematopoietic disorder Patients who have undergone a prior allogeneic hematopoietic or (other organ) transplant Previous allogeneic hematopoietic cell transplant (HCT) Has previously received an allogeneic hematopoietic cell transplant or chimeric antigen receptor-modified (CAR)-T cells Prior allogeneic hematopoietic cell transplant. Patients who have received a prior allogeneic hematopoietic stem cell transplant (HSCT) and who have either rejected their grafts or who have become tolerant of their grafts with no active GVHD requiring immunosuppressive therapy Preceding allogeneic hematopoietic stem cell transplant (HSCT) No subjects who have received an allogeneic hematopoietic stem cell transplant are eligible Received an allogeneic hematopoietic transplant within months of screening Patients undergoing haploidentical allogeneic hematopoietic stem cell transplants are not eligible; patients undergoing < / HLA allele matched allogeneic transplant are not eligible Prior allogeneic transplant for any hematopoietic disorder Prior allogeneic hematopoietic stem cell transplant. Subject who has history of organ transplant or allogeneic hematopoietic stem cell transplantation. Prior allogeneic hematopoietic stem cell transplant (HSCT) with either standard or reduced intensity conditioning ? months. Patients who have previously undergone allogeneic hematopoietic stem cell transplant will be excluded from this study Allogeneic hematopoietic stem cell transplant within days prior to leukapheresis Prior history of allogeneic hematopoietic stem cell transplant (HSCT). Recipients of prior allogeneic hematopoietic stem cell transplant (HSCT) with active acute or chronic GVHD Prior allogeneic hematopoietic stem cell transplant Prior allogeneic hematopoietic stem cell transplant Prior allogeneic hematopoietic stem cell transplant. Prior allogeneic hematopoietic stem cell transplant (HSCT) Prior allogeneic hematopoietic stem cell transplantation (allogeneic stem cell transplant) Prior allogeneic hematopoietic stem cell transplant At least days after receiving any allogeneic hematopoietic stem cell transplant AND Previous allogeneic hematopoietic stem cell transplant (HSCT transplant). Allogeneic hematopoietic stem cell transplant or Donor Lymphocyte Infusion within days prior to to the first dose of study drug Prior allogeneic hematopoietic stem cell transplant Prior allogeneic hematopoietic stem cell transplant within