The epithelioid sarcoma (ES), inflammatory myofibroblastic tumor (IMT), neuroendocrine tumor (NET), post radiation sarcoma (PRS), solitary fibrous tumor (SFT), and undifferentiated sarcoma (US) had only one patient, and they were all PD-L1 positive (Figures 5C, D). Here, CD274 is linked to undifferentiated (embryonal) sarcoma.