Patients receive cyclophosphamide IV over 12 hours on day 1 and filgrastim (G-CSF) subcutaneously (SC) daily beginning on day 2. Patients undergo leukapheresis to collect mononuclear cells for autologous T cells (ATCs) and peripheral blood stem cells (PBSCs). ATCs are generated by ex vivo expansion for 8-14 days and selection for CD3+/CD28+ cells.