Patient characteristics of all intensively treated patients with WBC≥100 G/l.

Patients with hyperleukocytosis had a reduced ECOG performance status and highly elevated WBC, LDH level and blast counts.
Abbreviations: BM blasts; bone marrow blasts; EOCG, Eastern Cooperative Group; LDH, lactase dehydrogenase; PB blasts; blasts in the peripheral blood; WBC, white blood count.
*one patient with an AML M5A showed 14% of myeloblasts in the peripheral blood, not accounting for the 59% of monoblasts in AML M5.