- Consolidation therapy: All patients receive cyclophosphamide IV over 30 minutes on days 1 and 29; cytarabine IV or subcutaneously (SC) on days 1-4, 8-11, 29-32, and 36-39; oral mercaptopurine (MP) on days 1-14 and 29-42; vincristine IV on days 15, 22, 43, and 50; pegaspargase IM on days 15 and 43; and IT MTX* on days 1, 8, 15, and 22. Patients with testicular disease also receive radiotherapy to the testes.