A majority of infantile fibrosarcomas (IF, sny: congenital fibrosarcoma) are associated with ETV6::NTRK3 (TrkC) translocations [32,33], while in rarer cases, related translocations involving NTRK1,-2, and, -3 with different fusion partners have been identified [34,35,36]. Here, NTRK3 is linked to fibrosarcoma.