- Group 1 (under age 60): Patients receive cyclophosphamide IV over 15-30 minutes on day 1, escalating doses of daunorubicin IV over 5-10 minutes on days 1-3, vincristine IV on days 1, 8, 15, and 22, oral prednisone on days 1-21, asparaginase intramuscularly on days 5, 8, 11, 15, 18, and 22, and filgrastim (G-CSF) subcutaneously (SC) beginning on day 4 and continuing for at least 7 days and then until blood counts recover.