- Consolidation: Patients receive cyclophosphamide IV over 30 minutes on days 36 and 64; cytarabine IV or SC on days 37-40, 44-47, 65-68, and 72-75; oral mercaptopurine on days 36-49 and 64-77; vincristine IV on days 50, 57, 78, and 85; pegaspargase IM on days 50 and 78; and methotrexate IT on days 36, 43, 50, and 57.