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Scheffler M, Ihle MA, Hein R, Merkelbach-Bruse S, Scheel AH, Siemanowski J, Brägelmann J, Kron A, Abedpour N, Ueckeroth F, Schüller M, Koleczko S, Michels S, Fassunke J, Pasternack H, Heydt C, Serke M, Fischer R, Schulte W, Gerigk U, Nogova L, Ko YD, Abdulla DSY, Riedel R, Kambartel KO, Lorenz J, Sauerland I, Randerath W, Kaminsky B, Hagmeyer L, Grohé C, Eisert A, Frank R, Gogl L, Schaepers C, Holzem A, Hellmich M, Thomas RK, Peifer M, Sos ML, Büttner R, Wolf J. K-ras Mutation Subtypes in NSCLC and Associated Co-occuring Mutations in Other Oncogenic Pathways. J Thorac Oncol 2018; 14:606-616. [PMID: 30605727 DOI: 10.1016/j.jtho.2018.12.013] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 10/31/2018] [Accepted: 12/10/2018] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Although KRAS mutations in NSCLC have been considered mutually exclusive driver mutations for a long time, there is now growing evidence that KRAS-mutated NSCLC represents a genetically heterogeneous subgroup. We sought to determine genetic heterogeneity with respect to cancer-related co-mutations and their correlation with different KRAS mutation subtypes. METHODS Diagnostic samples from 4507 patients with NSCLC were analyzed by next-generation sequencing by using a panel of 14 genes and, in a subset of patients, fluorescence in situ hybridization. Next-generation sequencing with an extended panel of 14 additional genes was performed in 101 patients. Molecular data were correlated with clinical data. Whole-exome sequencing was performed in two patients. RESULTS We identified 1078 patients with KRAS mutations, of whom 53.5% had at least one additional mutation. Different KRAS mutation subtypes showed different patterns of co-occurring mutations. Besides mutations in tumor protein p53 gene (TP53) (39.4%), serine/threonine kinase 11 gene (STK11) (19.8%), kelch like ECH associated protein 1 gene (KEAP1) (12.9%), and ATM serine/threonine kinase gene (ATM) (11.9%), as well as MNNG HOS Transforming gene (MET) amplifications (15.4%) and erb-b2 receptor tyrosine kinase 2 gene (ERBB2) amplifications (13.8%, exclusively in G12C), we found rare co-occurrence of targetable mutations in EGFR (1.2%) and BRAF (1.2%). Whole-exome sequencing of two patients with co-occurring phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha gene (PIK3CA) mutation revealed clonality of mutated KRAS in one patient and subclonality in the second, suggesting different evolutionary backgrounds. CONCLUSION KRAS-mutated NSCLC represents a genetically heterogeneous subgroup with a high frequency of co-occurring mutations in cancer-associated pathways, partly associated with distinct KRAS mutation subtypes. This diversity might have implications for understanding the variability of treatment outcome in KRAS-mutated NSCLC and for future trial design.
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Affiliation(s)
- Matthias Scheffler
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Michaela A Ihle
- University of Cologne, Cologne Institute of Pathology, Cologne, Germany
| | - Rebecca Hein
- University of Cologne, Institute of Medical Statistics, Informatics and Epidemiology, Cologne, Germany
| | | | - Andreas H Scheel
- University of Cologne, Cologne Institute of Pathology, Cologne, Germany
| | - Janna Siemanowski
- University of Cologne, Cologne Institute of Pathology, Cologne, Germany
| | - Johannes Brägelmann
- University of Cologne, Department for Translational Genomics, Cologne, Germany
| | - Anna Kron
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Nima Abedpour
- University of Cologne, Department for Translational Genomics, Cologne, Germany
| | - Frank Ueckeroth
- University of Cologne, Cologne Institute of Pathology, Cologne, Germany
| | - Merle Schüller
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Sophia Koleczko
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Sebastian Michels
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Jana Fassunke
- University of Cologne, Cologne Institute of Pathology, Cologne, Germany
| | - Helen Pasternack
- Pathology of the University Medical Center Schleswig-Holstein, Campus Luebeck and Research Center Borstel, Leibniz Center for Medicine and Biosciences
| | - Carina Heydt
- University of Cologne, Cologne Institute of Pathology, Cologne, Germany
| | - Monika Serke
- Lung Clinic Hemer, Department for Pulmonology and Thoracic Oncology, Hemer, Germany
| | - Rieke Fischer
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | | | - Ulrich Gerigk
- GFO Clinics Bonn, Marien-Hospital Bonn, Bonn, Germany
| | - Lucia Nogova
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Yon-Dschun Ko
- Evangelical Clinics of Bonn, Johanniter Hospital, Bonn, Germany
| | - Diana S Y Abdulla
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Richard Riedel
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | | | - Joachim Lorenz
- Hospital Lüdenscheid, Clinic for Pneumology, Internistic Intensive Medicine, Infectiology and Sleep Medicine, Lüdenscheid, Germany
| | - Imke Sauerland
- Hospital Lüdenscheid, Clinic for Pneumology, Internistic Intensive Medicine, Infectiology and Sleep Medicine, Lüdenscheid, Germany
| | - Winfried Randerath
- Bethanien Hospital Solingen, Clinic for Pulmonology and Allergology, Solingen, Germany
| | - Britta Kaminsky
- Bethanien Hospital Solingen, Clinic for Pulmonology and Allergology, Solingen, Germany
| | - Lars Hagmeyer
- Bethanien Hospital Solingen, Clinic for Pulmonology and Allergology, Solingen, Germany
| | - Christian Grohé
- Evangelic Lung Clinic Berlin, Department of Respiratory Diseases, Berlin, Germany
| | - Anna Eisert
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Rieke Frank
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Leonie Gogl
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Carsten Schaepers
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Alessandra Holzem
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany
| | - Martin Hellmich
- University of Cologne, Institute of Medical Statistics, Informatics and Epidemiology, Cologne, Germany
| | - Roman K Thomas
- University of Cologne, Department for Translational Genomics, Cologne, Germany
| | - Martin Peifer
- University of Cologne, Department for Translational Genomics, Cologne, Germany
| | - Martin L Sos
- University of Cologne, Department for Translational Genomics, Cologne, Germany
| | - Reinhard Büttner
- University of Cologne, Cologne Institute of Pathology, Cologne, Germany
| | - Jürgen Wolf
- University Hospital of Cologne, Lung Cancer Group Cologne, Department I of Internal Medicine, Cologne, Germany.
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