NTRK1 and thyroid cancer: Previously reported fusion genes in thyroid cancer, ETV6–NTRK3 (4.80% in PTC), CCDC6–RET (2.40% in PTC), NCOA4–RET (0.80% in PTC), SQSTM1–NTRK1 (0.80% in PTC), STRN–ALK (0.80% in PTC), and PAX8–PPARG (0.80% and 1.82% in PTC and FTN, respectively), were also identified [8].