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).

	CD66cpos cases	CD66cneg cases	p-value (chi-square)
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