True about adult autologous stem cell transplant are all except:

Autologous transplantation involves the removal and storage of the patient's own stem cells with subsequent reinfusion after the patient receives high-dose myeloablative therapy. Unlike allogeneic transplantation, there is no risk of GVHD or graft rejection with autologous transplantation. Donors are typically treated with 4 or 5 days of hematopoietic growth factor, following which stem cells are collected in 4-hour pheresis sessions.