- Consolidation: The assigned steroid is tapered over days 29-35. Patients also receive cyclophosphamide IV over 30 minutes on days 29 and 43; cytarabine IV or SC on days 30-33, 37-40, 44-47, and 51-54; oral mercaptopurine on days 29-56; and methotrexate IT on days 29, 36, 43, and 50.