| Patients’ characteristics | N (%) |
| Age Median (range) <10 years ≥10 years | 5 (1 - 16) years 88 (72.73) 33 (27.27) |
| Sex Male Female M/F ratio | 70 (57.85) 51 (42.15) 1.4/1 |
| Initial TLC Median (range) <50,000 ≥50,000 | 17.2 (0.9 - 576) 83 (68.59) 38 (31.41) |
| ALC ALC-15 - 350 <350 vs ≥350 cells/μl ALC-15 - 500 <500 vs ≥500 cells/μl ALC-29 - 350 <350 vs ≥350 cells/μl ALC-29 - 500 <500 vs ≥500 cells/μl |
10 vs 111 23 vs 98 3 vs 118 7 vs 114 |
| Mediastinal mass* Present Absent | 15 (12.60) 104 (87.40) |
| Immunophenotyping B-ALL T-ALL | 95 (78.51) 26 (21.49) |
| CNS involvement Yes No | 7 (5.79) 114 (94.21) |
| Early response RER SER | 106 (87.60) 15 (12.40) |
| Induction response CR Not | 104 (86) 17 (14) |
| 4 year overall survival | 75.2% ± 0.05% |
| 4 year event free survival | 62.8% ± 0.04% |