The erythroblast transformation-specific (ETS) variant 6 (ETV6)-neurotrophic receptor kinase (NTRK3) fusion has been identified in glioblastoma, mammary secretory carcinoma, salivary gland mammary carcinoma, adult lung cancer, papillary thyroid cancer, and mesenchymal tumors including infantile fibrosarcoma, mesoblastic nephroma, IMT, and gastrointestinal stromal tumors [1, 2, 4–8]. This evidence concerns the gene ETV6 and fibrosarcoma.