- Second autologous PBSC transplantation: Beginning approximately 56-90 days after the first transplant, patients receive conditioning therapy comprising carmustine IV over 2 hours on day -5; etoposide IV over 1 hour and cytarabine IV over 1 hour on days -5 to -2; and melphalan IV on day -1. Patients undergo autologous PBSC transplantation on day 0.