Table 2 Correlation between risk factors and CD66c expression. The distribution of CD66c^pos and CD66c^neg cases (cutoff 20%) is shown. In addition, no difference was observed in the RFS of the risk-defined subsets based on the CD66c expression (log-rank test p-value > 0.05 in all analyses). Only patients treated by a single ALL BFM-95 protocol are shown here (n = 254).

All patients

109

145

N/A

Prednisone poor responder

9

12

n.s.

Prednisone good responder

100

133

Initial leukocytosis = > 20 × 10⁹/L

28

44

n.s.

Initial leukocytosis < 20 × 10⁹/L

81

101

TEL/AML1

2

77

P < 0.0001

BCR/ABL

7

1

MLL/AF4

0

1

Hyperdiploid

55

7

Other genotype (not TEL/AML1, BCR/ABL, MLL/AF4 or hyperdiploidy)

45

59

Age 1–5

59

88

n.s.

Age >5

50

57

Standard risk group

40

58

n.s.

Intermediate risk group

54

72

High risk group

15

15