AIEOP	Associazione Italiana Ematologia Oncologia Pediatrica
ALL	acute lymphoblastic leukemia
AML	acute myeloid leukemia
APL	acute promyelocytic leukemia
AR	allelic ratio
ATG	anti-thymocyte globulin
ATO	arsenic-trioxide
BFM	Berlin-Frankfurt-Munster Study Group
BM	bone marrow
BMT	bone marrow transplantation
BSA	body surface area
CBU	cord blood unit
CIR	cumulative incidence of relapse
COG	Children’s Oncology Group
CR	complete remission
DFS	disease-free survival
ED	early death
EFS	event-free survival
FISH	fluorescent in situ hybridization
GvHD	graft versus host disease
HPOG	Hungarian Pediatric Oncology-Hematology Group
HSCT	hematopoietic stem cell transplantation
IFD	invasive fungal disease
MUD	matched unrelated donor
OS	overall survival
PBSC	peripheral blood stem cell
PBSCT	peripheral blood stem cell transplantation
PCR	polymerase chain reaction
TRM	transplant-related mortality