3D-CRT	3-Dimensional conformal radiotherapy
ABVD	Adriamycin [doxorubicin], bleomycin, vinblastine, and dacarbazine
ACT	Adaptive T-cell therapy
ACVR1	Activin A receptor type I
AIEOP	Assoziazione Italiana Ematologica Oncologia Pediatrica
AKT	Protein kinase B
ALK	Anaplastic lymphoma kinase
ALL	Acute lymphoblastic leukemia
AML	Acute myeloid leukemia
AML1	Acute myeloid leukemia 1
ASPL	Alveolar soft part sarcoma locus
AT	Ataxia-telangiectasia
ATRX	Chromatin remodeler ATP-dependent helicase
BCL2	B-cell lymphoma 2
BCOR	BCL-6 corepressor
BET	Bromodomain and extra-terminal motif
BFM	Berlin-Frankfurt-Muenster
BLM	Bloom syndrome
BRAF	v-raf murine sarcoma viral oncogene homolog B
BRCA2	Breast cancer 2
BTK	Bruton tyrosine kinase
CAR	Chimeric antigen receptor
CASP8	Caspase 8
CBFB	Core-binding factor subunit beta
CD	Cluster of differentiation
CDC5L	Cell division cycle 5-like
CDK	Cyclin-dependent kinase
CDKN2	Cyclin-dependent kinase inhibitor
CHK1	Checkpoint kinase 1
CHK2	Checkpoint kinase 2
CLL	Chronic lymphocytic leukemia
CNS	Central nervous system
CT	Chemotherapy
CML	Chronic myelogenous leukemia
CTLA-4	Cytotoxic T lymphocyte antigen-4
CTNNB1	Catenin beta-1
CXCL12	C-X-C motif chemokine 12
CXCR4	C-X-C chemokine receptor type 4
CYP	Cytochrome P450
DNA	Deoxyribonucleic acid
DNA-PK	DNA-dependent protein kinase
DIPG	Diffuse intrinsic pontine glioma
DS	Down syndrome
EBV	Epstein-Barr-Virus
EBRT	External beam radiation therapy
EGFR	Epidermal growth factor receptor
ERCC	Excision repair cross-complementing
ERG	ETS-related gene
ERK	Extracellular signal-regulated kinase
EPN	Ependymoma
ES	Ewing sarcoma
EZH2	Enhancer of zeste homolog 2
FA	Fanconi anemia
FBXW7	F-box/WD repeat-containing protein 7
FGFR	Fibroblast growth factor receptor
FLI-1	Leukemia integration 1 transcription factor
FLT3	fms like tyrosine kinase 3
FOXO1	Forkhead box protein O1
GCCR	German Childhood Cancer Registry
GST	Glutathione s-transferase
HDAC	Histone deacetylase
HER2	Human epidermal growth factor receptor 2
HGG	High-grade glioma
HIC1	Hypermethylated in cancer 1
HL	Hodgkin lymphoma
HSCT	Hematopoietic stem cell transplantation
ICI	Immune checkpoint inhibitor
IDH	Isocitrate dehydrogenase isozymes
IFN	Interferon
IGF1R	Insulin-like growth factor 1 receptor
IGRT	Image-guided radiotherapy
IKZF1	Ikaros family zinc finger protein 1
IL-2	Interleukin 2
IMRT	Intensity-modulated radiotherapy
IR	Ionizing radiation
ITD	Internal tandem duplication
IVA	Ifosfamide, vincristine, and actinomycin D
JAK2	Janus kinase 2
KRAS	Kirsten rat sarcoma viral oncogene
KIT	Tyrosine-protein kinase KIT
LFS	Li–Fraumeni syndrome
LGG	Low-grade gliomas
LIG4	DNA ligase 4
LSD1	Lysine-specific demethylase 1
MAPK	Mitogen-activated protein kinase
MB	Medulloblastoma
MDS	Myelodysplastic syndrome
MET	Mesenchymal-epithelial transition factor
MGMT	O6-methylguanine DNA methyltransferase
MLL	Mixed-lineage leukemia
MOPP	Mustargen [mechlorethamine], oncovin [vincristine], procarbazine, and prednisone
MSH	MutS homolog
MYC	bHLH transcription factor
mTOR	Mechanistic target of rapamycin
NB	Neuroblastoma
NBS	Nijmegen breakage syndrome
NF	Neurofibroma
NF1	Neurofibromatosis 1
NF2	Neurofibromatosis 2
NF-kB	Nuclear factor ‘kappa-light-chain-enhancer’ of activated B-cells
NHL	Non-Hodgkin lymphoma
NKX2.2	Homeobox protein Nkx-2.2
NQO1	Nicotinamide adenine dinucleotide phosphate: quinone oxidoreductase
NRMS	Nonrhabdomyosarcoma
NTRK	Neurotrophic receptor tyrosine kinase
OP/EPA	Vincristine, prednisone, procarbazine/etoposide, and doxorubicin
OPPA/COPP	Cyclophosphamide, vincristine, prednisone, and procarbazine
OS	Osteosarcoma
OTX2	Orthodenticle homeobox 2
PALB2	Partner and localizer of BRCA2
PAPPA	Pregnancy-associated plasma protein A
PARP	Poly(ADP-ribose)-polymerase
PAX3	Paired box gene 3
PD-1	Programmed cell death protein 1
PDGFR	Platelet-derived growth factor receptor
PD-L1	Programmed cell death protein ligand 1
PI3K	Phosphatidylinositol 3-kinase
PIK3CA	Phosphatidylinositol-4,5-bisphosphate 3
PIM1	Proto-oncogene serine/threonine-protein kinase Pim-1
PMP22	Peripheral myelin protein 22
PRIM1	DNA primase small subunit
PTCH1	Patched homolog 1
PTEN	Phosphatase and tensin homolog
PVT1	Plasmacytoma variant translocation 1
RAG1	Recombination activating gene 1
RARA	Retinoic acid receptor alpha
RAS	Rat Sarcoma viral oncogene
RASSF1A	Ras association domain-containing
RB	Retinoblastoma
RMS	Rhabdomyosarcoma
RNA	Ribonucleic acid
RR	Relative risk
R/R	Relapsed/refractory
RUNX1	Runt-related transcription factor 1
SBRT	Stereotactic body radiotherapy
SEER	Surveillance, epidemiology and end results
SHH	Sonic hedgehog
SIR	Standardized incidence ratio
SKP2	S-phase kinase-associated protein 2
SMARC	SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily
SMR	Standardized mortality ratio
SPM	Second primary malignancy
STS	Soft tissue sarcoma
SUFU	Suppressor of fused homolog
TFE3	Transcription factor E3
TMZ	Temozolomide
TNF	Tumor necrosis factor
TRK	Tyrosine receptor kinase
TP53	Tumor suppressor protein 53
TPMT	Thiopurine methyltransferase
TPCV	Thioguanine, procarbazine, lomustine, and vincristine
TSC	Tuberous sclerosis complex
VAC	Vincristine, actinomycin D, and cyclophosphamide
VACD	Vincristine, cyclophosphamide, actinomycin D, and doxorubicin
VEGF	Vascular endothelial growth factor
WRN	Werner syndrome
XPD	Xeroderma pigmentosum group D gene
XRCC1	X-ray cross-complementing factor 1
YAP1	Yes-associated protein 1