- Conditioning regimen: Patients receive BEAM chemotherapy comprising carmustine IV over 2 hours on day -6, etoposide IV over ≥ 1 hour on days -5 to -2, cytarabine IV over 15 minutes twice daily on days -5 to -2, and melphalan IV on day -1. Patients also receive alemtuzumab IV on days -5 to -1.