- Extended remission induction therapy: Patients receive prednisone IV or orally twice daily on days 1-14; vincristine IV on days 1 and 8; pegaspargase IM or IV on day 4 or 5 or 6; and daunorubicin hydrochloride IV on day 1. Patients undergo BMA and biopsy on day 15. Patients with M1 marrow proceed to remission consolidation therapy. Patients with M2 or M3 bone marrow are removed from protocol therapy.