PMID- 37236546 OWN - NLM STAT- MEDLINE DCOM- 20230801 LR - 20230802 IS - 1943-7811 (Electronic) IS - 1525-1578 (Linking) VI - 25 IP - 8 DP - 2023 Aug TI - Molecular and Cytogenetic Features of NTRK Fusions Enriched in BRAF and RET Double-Negative Papillary Thyroid Cancer. PG - 569-582 LID - S1525-1578(23)00106-X [pii] LID - 10.1016/j.jmoldx.2023.04.007 [doi] AB - Rare NTRK-driven malignant neoplasms can be effectively inhibited by anti-TRK agents. The discovery of NTRK1/2/3-rich tumors in papillary thyroid cancer (PTC) patients is a precondition for the rapid identification of NTRK fusion tumors. Knowledge of NTRK gene activation is critical to accurately detect NTRK status. A total of 229 BRAF V600E-negative samples from PTC patients were analyzed in this study. Break-apart fluorescence in situ hybridization (FISH) was performed to detect RET fusion. NTRK status was analyzed using FISH, DNA- and RNA-based next-generation sequencing, and quantitative reverse transcription PCR. In 128 BRAF and RET double-negative cases, 56 (43.8%, 56/128) NTRK rearrangement tumors were found, including 1 NTRK2, 16 NTRK1, and 39 NTRK3 fusions. Two novel NTRK fusions, EZR::NTRK1 and EML4::NTRK2, were found in the NTRK rearrangement tumors. Dominant break-apart and extra 3' signal patterns accounted for 89.3% (50/56) and 5.4% (3/56) of all NTRK-positive cases, respectively, as determined by FISH. In this study's cohort, there were 2.3% (3/128) FISH false-negative and 3.1% (4/128) FISH false-positive cases identified. NTRK fusions are highly recurrent in BRAF and RET double-negative PTCs. FISH- or RNA-based next-generation sequencing is a reliable detection approach. NTRK rearrangement can be precisely, rapidly, and economically detected based on the developed optimal algorithm. CI - Copyright (c) 2023 Association for Molecular Pathology and American Society for Investigative Pathology. Published by Elsevier Inc. All rights reserved. FAU - Wu, Shafei AU - Wu S AD - Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Liu, Yuanyuan AU - Liu Y AD - Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Li, Kaimi AU - Li K AD - Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Liang, Zhiyong AU - Liang Z AD - Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. Electronic address: liangzy@pumch.cn. FAU - Zeng, Xuan AU - Zeng X AD - Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. Electronic address: zengx@pumch.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230525 PL - United States TA - J Mol Diagn JT - The Journal of molecular diagnostics : JMD JID - 100893612 RN - EC 2.7.10.1 (Receptor, trkA) RN - EC 2.7.11.1 (Proto-Oncogene Proteins B-raf) RN - 63231-63-0 (RNA) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (Biomarkers, Tumor) RN - EC 2.7.10.1 (RET protein, human) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-ret) RN - EC 2.7.11.1 (BRAF protein, human) SB - IM MH - Humans MH - Thyroid Cancer, Papillary/genetics MH - *Receptor, trkA/genetics/analysis MH - Proto-Oncogene Proteins B-raf/genetics MH - In Situ Hybridization, Fluorescence MH - *Thyroid Neoplasms/diagnosis/genetics/pathology MH - RNA MH - Oncogene Proteins, Fusion/genetics MH - Biomarkers, Tumor/genetics MH - Proto-Oncogene Proteins c-ret/genetics EDAT- 2023/05/27 09:42 MHDA- 2023/08/01 06:44 CRDT- 2023/05/26 19:28 PHST- 2022/09/27 00:00 [received] PHST- 2023/02/17 00:00 [revised] PHST- 2023/04/10 00:00 [accepted] PHST- 2023/08/01 06:44 [medline] PHST- 2023/05/27 09:42 [pubmed] PHST- 2023/05/26 19:28 [entrez] AID - S1525-1578(23)00106-X [pii] AID - 10.1016/j.jmoldx.2023.04.007 [doi] PST - ppublish SO - J Mol Diagn. 2023 Aug;25(8):569-582. doi: 10.1016/j.jmoldx.2023.04.007. Epub 2023 May 25.