Definition

A preparation of allogeneic peripheral blood stem cells (PBSCs) from an unrelated or partially matched related donor that have been selectively depleted of CD3-positive (CD3+) T cells and CD19-positive (CD19+) B cells via leukapheresis with potential immune reconstituting activity. The CD3+/CD19+ cell-depleted PBSCs are used for allogeneic hematopoietic cell transplantation (HCT) and may allow for rapid and sustained engraftment, immune reconstitution, and may prevent or reduce graft-versus-host disease (GvHD) and Epstein-Barr virus (EBV)-driven post-transplant lymphoproliferative disorders.