AFP	α-fetoprotein
BCL-2	B-cell lymphoma
CEA	Carcino-embryonic antigen
CK-7	(Cyto-)Keratin 7
CK-8	(Cyto-)Keratin 8
CK-18	(Cyto-)Keratin 18
CK-19	(Cyto-)Keratin 19
COG	Children’s Oncology Group
FNA	Fine Needle Aspiration
GPOG	German Pediatric Oncology Group
GWAS	Genomic wide association studies
HB	Hepatoblastoma
IPTA	International Pediatric Transplant Association
OV-6	Oval cells-6
PD-1	Programmed death 1
PD-L1	Programmed death-ligand 1
PRETEXT	Pre-treatment extent of disease staging system
SCUD	Small cell undifferentiated
SIOP	International Society of Pediatric Oncology
SIOPEL	International Childhood Liver Tumors Strategy Group