Major in vivo modeling approaches
CDX	Cell-line-derived xenograft
EIMM	Environmentally-induced mouse model
GEMM	Genetically-engineered mouse model
PDOX	Patient-derived orthotopic xenograft
PDX	Patient-derived xenograft
Focus sarcoma entities of this review with abbreviations and typical drivers
aRMS	Alveolar Rhabdomyosarcoma (PAX3/7-FOXO1)
ASPS	Alveolar soft part sarcoma (ASPSCR1-TFE3)
CCS	Clear cell sarcoma (of soft tissue) (EWSR1-ATF1)
CCSK	Clear cell sarcoma of the kidney (BCOR ITDs, YWAHE-NUTM2)
DSRCT	Desmoplastic small round cell tumor (EWSR1-WT1)
eRMS	Embryonal Rhabdomyosarcoma (KRAS and TP53 alterations among various others)
EwS	Ewing Sarcoma (EWSR1-FLI1, EWSR1-ERG, STAG2)
IFS	Infantile fibrosarcoma (ETV6-NTRK3)
IMT	Inflammatory myofibroblastic tumor (ALK fusions, among others)
MC	Mesenchymal chondrosarcoma (HEY1-NCOA2)
MPNST	Malignant peripheral nerve sheath tumor (NF1 and TP53 deletions)
MRT	Malignant rhabdoid tumor (SMARCB1)
MYOD1-RMS	MYOD-mutated (typically spindle cell) rhabdomyosarcoma (MYOD-hotspot mutation among others)
OS	Osteosarcoma (TP53, SNVs)
SRBCT	Small round blue cell tumors, previously called Ewing-like tumors, subgroups harboring BCOR- and CIC rearrangements
SySa	Synovial Sarcoma (SS18-SSX1/2/4)
UPS	Undifferentiated pleomorphic sarcoma, previously called Malignant fibrous histiocytoma (KRAS and TP53 among various others)