- Determine the efficacy of mobilization using filgrastim (G-CSF) with or without standard-dose ifosfamide, carboplatin, and etoposide (ICE), conditioning using ifosfamide and etoposide plus total body irradiation or high-dose ICE, and autologous peripheral blood stem cell (PBSC) transplantation as salvage therapy in patients with refractory, recurrent, or poor prognosis non-Hodgkin's lymphoma.