- Arm II (closed to accrual as of 10/4/2007): Within 2-4 weeks after PBSC collection, patients receive gemtuzumab ozogamicin IV over 2 hours on day 1 and GM-CSF SC or IV beginning on day 10 and continuing until blood counts recover. Within 2-3 weeks after blood count recovery, patients receive conditioning and undergo autologous PBSC transplantation as in arm I.