- Delayed intensification (10 weeks): Patients receive vincristine IV on days 7, 14, 21, and 28; daunorubicin IV over 48 hours on days 0-2; asparaginase IM on day 3 and then 3 times a week for 6 doses; and oral dexamethasone on days 0-29. Patients also receive cyclophosphamide IV over 1 hour on days 2 and 35; cytarabine IV on days 35-38 and 42-45; oral thioguanine on days 35-48; and methotrexate IT on days 35 and 42.