XPO1 and undifferentiated (embryonal) sarcoma: When compared with the “XPO1-low” group, the “XPO1-high” group was associated with younger patients' age (p=3.0E-05, t-test), with pathological subtypes with more myxoid liposarcomas, leiomyosarcomas and other STS and less well differentiated/dedifferentiated and pleomorphic liposarcomas and undifferentiated sarcomas (p=8.0E-06, Fisher's exact test), and with high-risk CINSARC class (p=6.0E-07, Fisher's exact test).