Acute Lymphoblastic Leukaemia

Good prognostic factors
French-American-British (FAB) L1 type
common ALL
pre-B phenotype
low initial WBC
del(9p)

Poor prognostic factors
FAB L3 type
T or B cell surface markers
Philadelphia translocation, t(9;22)
age < 2 years or > 10 years
male sex
CNS involvement
high initial WBC (e.g. > 100 * 109/l)
non-Caucasian