NTRK fusions discovered in thyroid tumors so far include EML4-NTRK3 (57), ETV6-NTRK3 (26, 27, 63), SQSTM1-NTRK3 (57), IRF2BP2-NTRK1 (57), TPR-NTRK1 (26, 27), TPM3-NTRK1 (25, 64), TFG-NTRK1 (64, 65), and TRIM33-NTRK1 (65). This evidence concerns the gene IRF2BP2 and thyroid tumor.