Diagnoses included low-grade ARHGAP23::FER spindle cell malignancy, a novel fusion-driven sarcoma [25]; ASPSCR1::TFE3 alveolar soft part sarcoma (ASPS); INI-1 deficient epithelioid sarcoma (ES); EWSR1::NR4A3 extra-skeletal myxoid chondrosarcoma (EMC); and WWTR1::CAMTA1 epithelioid hemangioendothelioma (EHE). This evidence concerns the gene WWTR1 and soft tissue sarcoma.