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Karolová J, Kazantsev D, Svatoň M, Tušková L, Forsterová K, Maláriková D, Benešová K, Heizer T, Dolníková A, Klánová M, Winkovska L, Svobodová K, Hojný J, Krkavcová E, Froňková E, Zemanová Z, Trněný M, Klener P. Sequencing-based analysis of clonal evolution of 25 mantle cell lymphoma patients at diagnosis and after failure of standard immunochemotherapy. Am J Hematol 2023; 98:1627-1636. [PMID: 37605345 DOI: 10.1002/ajh.27044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/03/2023] [Accepted: 07/16/2023] [Indexed: 08/23/2023]
Abstract
Our knowledge of genetic aberrations, that is, variants and copy number variations (CNVs), associated with mantle cell lymphoma (MCL) relapse remains limited. A cohort of 25 patients with MCL at diagnosis and the first relapse after the failure of standard immunochemotherapy was analyzed using whole-exome sequencing. The most frequent variants at diagnosis and at relapse comprised six genes: TP53, ATM, KMT2D, CCND1, SP140, and LRP1B. The most frequent CNVs at diagnosis and at relapse included TP53 and CDKN2A/B deletions, and PIK3CA amplifications. The mean count of mutations per patient significantly increased at relapse (n = 34) compared to diagnosis (n = 27). The most frequent newly detected variants at relapse, LRP1B gene mutations, correlated with a higher mutational burden. Variant allele frequencies of TP53 variants increased from 0.35 to 0.76 at relapse. The frequency and length of predicted CNVs significantly increased at relapse with CDKN2A/B deletions being the most frequent. Our data suggest, that the resistant MCL clones detected at relapse were already present at diagnosis and were selected by therapy. We observed enrichment of genetic aberrations of DNA damage response pathway (TP53 and CDKN2A/B), and a significant increase in MCL heterogeneity. We identified LRP1B inactivation as a new potential driver of MCL relapse.
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Affiliation(s)
- J Karolová
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
- First Department of Medicine - Hematology, University General Hospital Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - D Kazantsev
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - M Svatoň
- CLIP - Childhood Leukaemia Investigation Prague, Department of Pediatric Haematology and Oncology, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - L Tušková
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - K Forsterová
- First Department of Medicine - Hematology, University General Hospital Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - D Maláriková
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
- First Department of Medicine - Hematology, University General Hospital Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - K Benešová
- First Department of Medicine - Hematology, University General Hospital Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - T Heizer
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - A Dolníková
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - M Klánová
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
- First Department of Medicine - Hematology, University General Hospital Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - L Winkovska
- CLIP - Childhood Leukaemia Investigation Prague, Department of Pediatric Haematology and Oncology, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - K Svobodová
- Center for Oncocytogenetics, Institute of Medical Biochemistry and Laboratory Diagnostics, Charles University and General University Hospital, Prague, Czech Republic
| | - J Hojný
- Institute of Pathology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - E Krkavcová
- Institute of Pathology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - E Froňková
- CLIP - Childhood Leukaemia Investigation Prague, Department of Pediatric Haematology and Oncology, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - Z Zemanová
- Center for Oncocytogenetics, Institute of Medical Biochemistry and Laboratory Diagnostics, Charles University and General University Hospital, Prague, Czech Republic
| | - M Trněný
- First Department of Medicine - Hematology, University General Hospital Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - P Klener
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
- First Department of Medicine - Hematology, University General Hospital Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
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Pytlík R, Heissigerová J, Karolová J, Klimová A, Svozílková P, Brichová M, Říhová E, Mrázová K, Špička I, Blahovcová P, Trněný M. Characteristics and natural history of primary vitreoretinal lymphoma (PVL) compared to the primary lymphoma of the CNS (PCNSL). Hematol Oncol 2017. [DOI: 10.1002/hon.2439_105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- R. Pytlík
- 1st Department of Medicine; General University Hospital; Prague, Praha 2 Czech Republic
| | - J. Heissigerová
- Department of Ophtalmology; General University Hospital; Praha 2 Czech Republic
| | - J. Karolová
- 1st Department of Medicine; General University Hospital; Prague, Praha 2 Czech Republic
| | - A. Klimová
- Department of Ophtalmology; General University Hospital; Praha 2 Czech Republic
| | - P. Svozílková
- Department of Ophtalmology; General University Hospital; Praha 2 Czech Republic
| | - M. Brichová
- Department of Ophtalmology; General University Hospital; Praha 2 Czech Republic
| | - E. Říhová
- Department of Ophtalmology; General University Hospital; Praha 2 Czech Republic
| | - K. Mrázová
- Institute of Clinical Biochemistry and Laboratory Medicine; General University Hospital; Praha 2 Czech Republic
| | - I. Špička
- 1st Department of Medicine; General University Hospital; Prague, Praha 2 Czech Republic
| | - P. Blahovcová
- 1st Department of Medicine; General University Hospital; Prague, Praha 2 Czech Republic
| | - M. Trněný
- 1st Department of Medicine; General University Hospital; Prague, Praha 2 Czech Republic
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