WWTR1 and soft tissue sarcoma: Recently, a YAP and transcription factor E3 (TFE3) (YAP-TFE3) fusion gene, and a TAZ and calmodulin-binding transcription activator 1 (CAMTA1) (TAZ-CAMTA1) fusion gene were reported in cases of epithelioid hemangioendothelioma, a rare type of soft tissue sarcoma [115,116].