Table 1. Initial patient data . No. .... | American Society of Hematology

Table 1.

Initial patient data

	No.
Number of patients	103
Median age, y (range)	6.8 (0.2-17.1)
Sex, male/female	54/49
Median WBC, 10⁹/L (range)	48 (2-688)
Median percentage of leukemic cells, WBC (range)	83 (1-100)^*
BCR/ABL, yes/no/NA	1/44/58
MLL/AF4, yes/no/NA	0/45/58
TEL/AML 1, yes/no/NA	4/41/58
Liver, more than 3 cm below costal margin, yes/no/NA	52/48/3
Spleen, more than 3 cm below costal margin, yes/no/NA	51/49/3
Response to prednisone, good† poor‡ NA	44/9/50
Immunophenotype
Precursor B lineage, male/female	71 (34/37)
T lineage, male/female	32 (20/12)

	No.
Number of patients	103
Median age, y (range)	6.8 (0.2-17.1)
Sex, male/female	54/49
Median WBC, 10⁹/L (range)	48 (2-688)
Median percentage of leukemic cells, WBC (range)	83 (1-100)^*
BCR/ABL, yes/no/NA	1/44/58
MLL/AF4, yes/no/NA	0/45/58
TEL/AML 1, yes/no/NA	4/41/58
Liver, more than 3 cm below costal margin, yes/no/NA	52/48/3
Spleen, more than 3 cm below costal margin, yes/no/NA	51/49/3
Response to prednisone, good† poor‡ NA	44/9/50
Immunophenotype
Precursor B lineage, male/female	71 (34/37)
T lineage, male/female	32 (20/12)

NA indicates not available.

Peripheral blood was used only to analyze MRP expression in patients with more than 80% of leukemic cells before and more than 90% after Ficoll-Hypaque density gradient centrifugation.

†

Less than 10⁹ leukemic cells/L on day 8.

‡

More than 10⁹ leukemic cells/L on day 8.

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