Supplementary Table 2. Treatment plan for infant ALL with a germline MLL gene Phase and drug Delivery, duration Dosage* Dose schedule Induction DEX IV 10 mg/m2 PSL PO or IV 60 mg/m2 VCR IV 0.05 mg/kg CPA IV , 1-2 hr 1,200 mg/m2 DXR IV, 1 hr 25 mg/m2 ASP IV, 3-4 hr 10,000 U/m2 TIT Age-adjusted† VP-16 IV, 1-2 hr 100 mg/m2 Ara-C IV, 4 hr 500 mg/m2 Consolidation and central nervous system prophylaxis MTX IV, 24 hr 3 g/m2 Leucovorin IV 15 mg/m2 TIT Age-adjusted† CPA IV, 1-2 hr 500 mg/m2 ASP IV or IM 10,000 U/m2 PSL PO or IV 60 mg/m2 Intensification VCR IV 0.05 mg/kg DNR IV 25 mg/m2 Ara-C IV, 1 hr 60 mg/m2 6-MP PO 75 mg/m2 TIT Age-adjusted† Reinduction: same as induction Maintenance‡ Regimen A 6-MP PO 75 mg/m2 MTX PO 30 mg/m2 VP-16 IV, 1-2 hr 150 mg/m2 Ara-C IV, 4 hr 200 mg/m2 Regimen B 6-MP PO 75 mg/m2 MTX PO 30 mg/m2 PSL PO 60 mg/m2 VCR IV 0.05 mg/kg MTX IV, 5hr 300 mg/m2 TIT Age-adjusted† Days 1-14 Days 15-28 Days 1, 8, 15, 22 Day 2 Days 3, 5 Days 16, 18, 20, 23, 25, 27 Days 1, 15, 29 Days 29-32 Days 29-32 Days 1, 15, 29 36 hr after start of MTX, 7 times Days 1, 15, 29 Days 2, 16, 30 Days 2, 16, 30 Days 1-3 Days 1, 8, 15 Days 1, 8, 15 Days 2-7, Days 9-14 Days 1-14 Days 1, 15 Days 1-14 Days 1, 8 Day 14 Day 14 Days 1-14 Days 1, 8 Days 15-28 Days 15, 22, 29 Day 15 Every 6 weeks DEX, dexamethasone; PSL, prednisolone; VCR, vincristine; CPA, cyclophosphamide; DXR, doxorubicin; ASP, L-asparaginase; TIT, triple intrathecal therapy; VP-16, etoposide; Ara-C, cytarabine; MTX, methotrexate; IV, intravenously; PO, orally; hr, hour; IM, intramuscularly. The dose of each drug except VCR was reduced by one third in patients younger than 2 months and by one fourth in those 2 to 4 months of age. * Doses were calculated according to body weight in MLL96 study. † Doses were adjusted according to the patient’s age at administration as follows: 90 days old or younger, MTX 3 mg, hydrocortisone (HDC) 10 mg, Ara-C 6 mg; younger than 1 year old, MTX 6 mg, HDC 10 mg, Ara-C 12 mg; 1 year and older, MTX 8 mg, HDC 15 mg, Ara-C 20 mg. ‡ Each cycle consisted of two courses of Regimen A followed by Regimen B (each regimen was given over 2 weeks). The 12-week course was repeated 4 times. The total period of maintenance therapy was nearly 56 weeks.