NTRK3 and fibrosarcoma: Another TrkC fusion, EML4-NTRK3, was identified in rare cases of several types of cancers, including uterine and vaginal sarcomas [95], dermatofibrosarcoma [96], infantile fibrosarcoma and congenital mesoblastic nephroma [97], infantile fibrosarcomas [98], and glioblastoma [84].