4-Year EFS

p-Value

Age <10 years

≥10 years

65.9% ± 0.05%

54.5% ± 0.09%

0.070

TLC <50,000 cells/μl

≥50,000 cells/μl

63.9% ± 0.06%

60.5% ± 0.08%

0.592

Immunophenotyping

B-ALL

T-ALL

66.3% ± 0.05%

50% ± 0.10%

0.112