Overall, gene fusion is a common genomic structural variation in PTC, targeting, besides RET, several other kinases, such as NTRK1, NTRK3 (N Tropomyosin Receptor Kinase), ALK (Anaplastic Lymphoma Kinase), HGFR (Hepatocyte Growth Factor Receptor), and BRAF (B Rapidly Accelerated Fibrosarcoma) [19,77]. The gene discussed is MET; the disease is fibrosarcoma.