PMID- 32269691 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200411 IS - 1936-2625 (Electronic) IS - 1936-2625 (Linking) VI - 13 IP - 3 DP - 2020 TI - Identifying a wide range of actionable variants using capture-based ultra-deep targeted sequencing in treatment-naive patients with primary lung adenocarcinoma. PG - 525-535 AB - Precision medicine requires accurate multi-gene clinical diagnostics. In current clinical practice, the minimum confidence threshold for variant calling of targeted next-generation sequencing (NGS) on surgical specimens is set to 2%-5%. However, few studies have been conducted to identify a wide range of actionable variants using capture-based ultra-deep targeted sequencing, which has limit of detection (LOD) of 1%. The AmoyDx(R) Essential NGS panel for capture-based ultra-deep targeted sequencing (dual-indexed sequencing adapters with UMIs) was performed on 372 surgical specimens obtained from treatment-naive patients with primary lung adenocarcinoma, to detect actionable somatic driver mutations associated with each patient. Single-nucleotide variants, insertion/deletion events, and rearrangements were reported. Amplification-refractory mutation system (ARMS) assay and fluorescence in situ hybridization (FISH) were performed for the validation of hotspot mutations in EGFR and ALK, ROS1, and RET fusions. Potentially actionable variants were identified in 80.5% (352/437) of the nonsynonymous variants that were able to be sequenced, and were most commonly found in EGFR mutations (59.7%, 261/437), followed by KRAS mutations (5.5%, 24/437), PIK3CA mutations (3.7%, 16/437), ALK rearrangements (3.4%, 15/437), BRAF mutations (2.7%, 12/437), ERBB2 mutations (2.5%, 11/437), and RET rearrangements (2.3%, 10/437). A total of 7.2% (28/372) of the samples had multiple actionable mutations. Among the 93 triple-negative cases, which did not harbor mutations in EGFR, KRAS, or BRAF, gene fusions were detected in 26 cases (28%). Of the 328 samples, concordance of EGFR between the ARMS assay and NGS was observed in 318 samples (97.0%), and among 32 samples, concordance between ARMS/FISH test and NGS for ALK/ROS1/RET fusion genes was observed in 30 samples (93.8%). Here, we demonstrated that the capture-based ultra-deep targeted sequencing method, which has a LOD of 1% to profile a wide range of actionable variants in surgical specimens of treatment-naive lung adenocarcinoma patients, highlights the need for treatment-naive patients to undergo genomic profiling. CI - IJCEP Copyright (c) 2020. FAU - Chen, Lingfeng AU - Chen L AD - Shengli Clinical Medical College, Fujian Medical University Fuzhou, Fujian Province, China. AD - Department of Pathology, Fujian Provincial Hospital Fuzhou, Fujian Province, China. FAU - Chen, Minyan AU - Chen M AD - Department of Breast Surgery, Fujian Medical University Union Hospital Fuzhou, Fujian Province, China. AD - Department of General Surgery, Fujian Medical University Union Hospital Fuzhou, Fujian Province, China. FAU - Lin, Jie AU - Lin J AD - Shengli Clinical Medical College, Fujian Medical University Fuzhou, Fujian Province, China. AD - Department of Pathology, Fujian Provincial Hospital Fuzhou, Fujian Province, China. FAU - Chen, Xiaoyan AU - Chen X AD - Shengli Clinical Medical College, Fujian Medical University Fuzhou, Fujian Province, China. AD - Department of Pathology, Fujian Provincial Hospital Fuzhou, Fujian Province, China. FAU - Yu, Xunbin AU - Yu X AD - Shengli Clinical Medical College, Fujian Medical University Fuzhou, Fujian Province, China. AD - Department of Pathology, Fujian Provincial Hospital Fuzhou, Fujian Province, China. FAU - Chen, Zhizhong AU - Chen Z AD - Shengli Clinical Medical College, Fujian Medical University Fuzhou, Fujian Province, China. AD - Department of Pathology, Fujian Provincial Hospital Fuzhou, Fujian Province, China. FAU - Jin, Long AU - Jin L AD - Shengli Clinical Medical College, Fujian Medical University Fuzhou, Fujian Province, China. AD - Department of Pathology, Fujian Provincial Hospital Fuzhou, Fujian Province, China. LA - eng PT - Journal Article DEP - 20200301 PL - United States TA - Int J Clin Exp Pathol JT - International journal of clinical and experimental pathology JID - 101480565 PMC - PMC7137022 OTO - NOTNLM OT - Next-generation sequencing OT - amplification-refractory mutation system OT - driver gene alterations OT - lung adenocarcinoma OT - unique molecular identifiers COIS- None. EDAT- 2020/04/10 06:00 MHDA- 2020/04/10 06:01 PMCR- 2020/03/01 CRDT- 2020/04/10 06:00 PHST- 2020/01/07 00:00 [received] PHST- 2020/02/07 00:00 [accepted] PHST- 2020/04/10 06:00 [entrez] PHST- 2020/04/10 06:00 [pubmed] PHST- 2020/04/10 06:01 [medline] PHST- 2020/03/01 00:00 [pmc-release] PST - epublish SO - Int J Clin Exp Pathol. 2020 Mar 1;13(3):525-535. eCollection 2020.