WWTR1 and undifferentiated pleomorphic sarcoma: In contrast, several other sarcomas demonstrated predominantly activated TAZ including myxofibrosarcoma (100%), dedifferentiated liposarcoma (100%), malignant peripheral nerve sheath tumor (90%), uterine/non-uterine leiomyosarcoma (86 and 78% respectively), and undifferentiated pleomorphic sarcoma (82%).