PMID- 34638507 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211016 IS - 2072-6694 (Print) IS - 2072-6694 (Electronic) IS - 2072-6694 (Linking) VI - 13 IP - 19 DP - 2021 Oct 7 TI - MET Amplification in Non-Small Cell Lung Cancer (NSCLC)-A Consecutive Evaluation Using Next-Generation Sequencing (NGS) in a Real-World Setting. LID - 10.3390/cancers13195023 [doi] LID - 5023 AB - In non-small cell lung cancer (NSCLC), approximately 1-3% of cases harbor an increased gene copy number (GCN) of the MET gene. This alteration can be due to de novo amplification of the MET gene or can represent a secondary resistance mechanism in response to targeted therapies. To date, the gold standard method to evaluate the GCN of MET is fluorescence in situ hybridization (FISH). However, next-generation sequencing (NGS) is becoming more relevant to optimize therapy by revealing the mutational profile of each NSCLC. Using evaluable n = 205 NSCLC cases of a consecutive cohort, this study addressed the question of whether an amplicon based NGS assay can completely replace the FISH method regarding the classification of MET GCN status. Out of the 205 evaluable cases, only n = 9 cases (43.7%) of n = 16 high-level MET amplified cases assessed by FISH were classified as amplified by NGS. Cases harboring a MET GCN > 10 showed the best concordance when comparing FISH versus NGS (80%). This study confirms that an amplicon-based NGS assessment of the MET GCN detects high-level MET amplified cases harboring a MET GCN > 10 but fails to detect the various facets of MET gene amplification in the context of a therapy-induced resistance mechanism. FAU - Schubart, Christoph AU - Schubart C AUID- ORCID: 0000-0003-0084-9330 AD - Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. FAU - Stohr, Robert AU - Stohr R AD - Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. FAU - Togel, Lars AU - Togel L AUID- ORCID: 0000-0003-0612-6440 AD - Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. FAU - Fuchs, Florian AU - Fuchs F AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. AD - Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. FAU - Sirbu, Horia AU - Sirbu H AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. AD - Department of Thoracic Surgery, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. FAU - Seitz, Gerhard AU - Seitz G AD - Institute of Pathology, Neuropathology, Molecular Diagnostics and Cytology, Klinikum Bamberg, Sozialstiftung Bamberg, 96049 Bamberg, Germany. FAU - Seggewiss-Bernhardt, Ruth AU - Seggewiss-Bernhardt R AD - Department of Medicine 5, Klinikum Bamberg, Sozialstiftung Bamberg, 96049 Bamberg, Germany. FAU - Leistner, Rumo AU - Leistner R AD - Department of Medicine 4, Klinikum Bamberg, Sozialstiftung Bamberg, 96049 Bamberg, Germany. FAU - Sterlacci, William AU - Sterlacci W AD - Institute of Pathology, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), Klinikum Bayreuth, 95445 Bayreuth, Germany. FAU - Vieth, Michael AU - Vieth M AD - Institute of Pathology, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), Klinikum Bayreuth, 95445 Bayreuth, Germany. FAU - Seidl, Christoph AU - Seidl C AD - Diagnosticum, Pathology and Cytology, 95032 Hof, Germany. AD - Diagnosticum, Laboratory Medicine, Microbiology, Pathology, Human Genetics, 09221 Neukirchen, Germany. FAU - Mugler, Michael AU - Mugler M AD - Diagnosticum, Pathology and Cytology, 95032 Hof, Germany. AD - Diagnosticum, Laboratory Medicine, Microbiology, Pathology, Human Genetics, 09221 Neukirchen, Germany. FAU - Kapp, Markus AU - Kapp M AD - Department of Gastroenterology, Hepatology and Infectiology, Section Hematology & Oncology, Sana Klinikum Hof, 95032 Hof, Germany. FAU - Hohenforst-Schmidt, Wolfgang AU - Hohenforst-Schmidt W AD - Department of Cardiology, Sana Klinikum Hof, 95032 Hof, Germany. FAU - Hartmann, Arndt AU - Hartmann A AD - Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. FAU - Haller, Florian AU - Haller F AD - Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. FAU - Erber, Ramona AU - Erber R AUID- ORCID: 0000-0003-0315-1229 AD - Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), 91054 Erlangen, Germany. AD - Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), 91054 Erlangen, Germany. LA - eng PT - Journal Article DEP - 20211007 PL - Switzerland TA - Cancers (Basel) JT - Cancers JID - 101526829 PMC - PMC8508248 OTO - NOTNLM OT - MET OT - MET inhibitor OT - NSCLC OT - amplification OT - fluorescence in situ hybridization OT - next-generation sequencing OT - precision medicine OT - resistance mechanism COIS- A.H. has received honoraria from BMS, MSD, Roche, AstraZeneca, Boehringer Ingelheim, Abbvie, Jansen-Cilag, and Ipsen. R.E. has received honoraria from Roche, Eisai, Pfizer, and Novartis and travel grants from BioNTech. The institution of A.H. and R.E. conducts research for AstraZeneca, Roche, Janssen-Cilag, NanoString Technologies, Biocartis, Zytomed Systems, Novartis, Cepheid, and BioNTech. R.S.B. received honoraria from BMS, Roche, MSD, Novartis, Celgene, Amgen and Ipsen. W.S. and M.V. conduct research/received honoraria for/from Falk, Pentax, Lilly, Malesci, AstraZeneca, Olympus, Leica, Rohe, Boerhinger-Ingelheim. EDAT- 2021/10/14 06:00 MHDA- 2021/10/14 06:01 PMCR- 2021/10/07 CRDT- 2021/10/13 01:02 PHST- 2021/08/12 00:00 [received] PHST- 2021/09/26 00:00 [revised] PHST- 2021/09/27 00:00 [accepted] PHST- 2021/10/13 01:02 [entrez] PHST- 2021/10/14 06:00 [pubmed] PHST- 2021/10/14 06:01 [medline] PHST- 2021/10/07 00:00 [pmc-release] AID - cancers13195023 [pii] AID - cancers-13-05023 [pii] AID - 10.3390/cancers13195023 [doi] PST - epublish SO - Cancers (Basel). 2021 Oct 7;13(19):5023. doi: 10.3390/cancers13195023.