Round Cell Sarcoma with EWSR1-non-ETS Fusion

**Semantic type:** Neoplastic Process

**Definition:** A group of rare round and spindle cell sarcomas characterized by the presence of EWSR1 or FUS fusions involving partners unrelated to the ETS gene family. This category includes EWSR1-NFATC2, EWSR1-PATZ1, and FUS-NFATC2 sarcomas.

**Synonyms:** - Ewing-Like Sarcoma - Round Cell Sarcoma with EWSR1::non-ETS Fusion