Table 1. Patient characteristics.

Patients	all		HER2/neu+		HER2/neu−
Patients total	n = 170
HER2/neu status	n = 65	100 %	n = 17	26 %	n = 48	74 %
Female	n = 25	38 %	n = 4	24 %	n = 21	44 %
Male	n = 40	62 %	n = 13	76 %	n = 27	56 % p = 0.14
Age at diagnosis
median	40 years		36 years		42 years
range	17-83 years		20-61 years		17-83 years	p = 0.01*
Diagnoses
mature B-ALL	n = 8	12 %			n = 8	16 %
c-ALL	n = 27	42 %	n = 9	53 %	n = 18	38 %
precursor B-ALL	n = 23	35 %	n = 8	47 %	n = 15	31 %
T-ALL	n = 7	11 %			n = 7	15 %
Risk Stratification
standard	n = 28	43 %	n = 8	47 %	n = 20	42 %
high	n = 35	54 %	n = 9	53 %	n = 26	54 % p = 0.8
not determined	n = 2	3 %			n = 2	4 %