Table 1 Patients characteristics

number of patients (n)

69

sex (m/w)

42/27

age at diagnosis (median, range)

7 8/12 yrs. (1 month – 20 years)

leukemia (n)

25

   ALL

21

   AML

1

   JMML

1

   AML-Relapse, after SCT

2

solid tumors (n)

39

   brain tumor

5

   bone tumor

4

   Hodgkin's disease

3

   NHL

10

   others

17

hematological disorders (n)

5

   after SCT

4

   no SCT

1