- Nonmyeloablative allogeneic bone marrow transplantation (BMT) or peripheral blood stem cell transplantation (PBSCT): Patients receive fludarabine IV on days -4 to -2 and undergo total-body irradiation on day -1. Patients undergo allogeneic BMT on day 0 or PBSCT on day 0 (and days 1 and 2, if needed). Patients receive filgrastim (G-CSF) beginning on day 5 and continuing until at least day 15 or until blood counts recover.