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Carvalho NDAD, Santiago KM, Maia JML, Costa FD, Formiga MN, Soares DCDQ, Paixão D, Mello CALD, Costa CMLD, Rocha JCCD, Rivera B, Carraro DM, Torrezan GT. Prevalence and clinical implications of germline pathogenic variants in cancer predisposing genes in young patients across sarcoma subtypes. J Med Genet 2023; 61:61-68. [PMID: 37536918 PMCID: PMC10803955 DOI: 10.1136/jmg-2023-109269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 07/11/2023] [Indexed: 08/05/2023]
Abstract
BACKGROUND Sarcomas are a rare and diverse group of cancers occurring mainly in young individuals for which an underlying germline genetic cause remains unclear in most cases. METHODS Germline DNA from 177 children, adolescents and young adults with soft tissue or bone sarcomas was tested using multigene panels with 113 or 126 cancer predisposing genes (CPGs) to describe the prevalence of germline pathogenic/likely pathogenic variants (GPVs). Subsequent testing of a subset of tumours for loss of heterozygosity (LOH) evaluation was performed to investigate the clinical and molecular significance of these variants. RESULTS GPVs were detected in 21.5% (38/177) of the patients (15.8% in children and 21.6% in adolescents and young adults), with dominant CPGs being altered in 15.2% overall. These variants were found in genes previously associated with the risk of developing sarcomas (TP53, RB1, NF1, EXT1/2) but also in genes where that risk is still emerging/limited (ERCC2, TSC2 and BRCA2) or unknown (PALB2, RAD50, FANCM and others). The detection rates of GPVs varied from 0% to 33% across sarcoma subtypes and GPV carriers were more likely to present more than one primary tumour than non-carriers (21.1%×6.5%; p=0.012). Loss of the wild-type allele was detected in 48% of tumours from GPV carriers, mostly in genes definitively associated with sarcoma risk. CONCLUSION Our findings reveal that a high proportion of young patients with sarcomas presented a GPV in a CPG, underscoring the urgency of establishing appropriate genetic screening strategies for these individuals and their families.
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Affiliation(s)
| | - Karina Miranda Santiago
- Clinical and Functional Genomics Group, ACCamargo Cancer Center, Sao Paulo, São Paulo, Brazil
| | | | | | | | | | - Daniele Paixão
- Oncogenetics Department, ACCamargo Cancer Center, Sao Paulo, Brazil
| | | | | | | | - Barbara Rivera
- Molecular Mechanisms and Experimental Therapy in Oncology Program, IDIBELL, Barcelona, Spain
- Gerald Bronfman Department of Oncology, McGill University, Montreal, Québec, Canada
| | - Dirce Maria Carraro
- Clinical and Functional Genomics Group, ACCamargo Cancer Center, Sao Paulo, São Paulo, Brazil
- National Institute of Science and Technology in Oncogenomics and Therapeutic Innovation, Sao Paulo, Brazil
| | - Giovana Tardin Torrezan
- Clinical and Functional Genomics Group, ACCamargo Cancer Center, Sao Paulo, São Paulo, Brazil
- National Institute of Science and Technology in Oncogenomics and Therapeutic Innovation, Sao Paulo, Brazil
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Vibert R, Hasnaoui J, Perrier A, Lefebvre A, Colas C, Dhooge M, Basset N, Chansavang A, Desseignes C, Duval A, Farelly S, Hamzaoui N, Laurent-Puig P, Metras J, Moliere D, Muleris M, Netter J, Touat M, Bielle F, Labreche K, Nicolle R, Perkins G, Warcoin M, Coulet F, Benusiglio PR. Lynch syndrome: influence of additional susceptibility variants on cancer risk. Eur J Hum Genet 2023; 31:1078-1082. [PMID: 37088804 PMCID: PMC10474080 DOI: 10.1038/s41431-023-01367-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 04/03/2023] [Accepted: 04/13/2023] [Indexed: 04/25/2023] Open
Abstract
Some patients with Lynch syndrome (LS) have extreme phenotypes, i.e. cancer before the recommended screening age, or cancer for which there are no screening guidelines. We made the hypothesis that additional germline variants in cancer susceptibility genes (CSG) could explain some of these phenotypes. We compared the prevalence of additional CSG variants in LS patients with a cancer diagnosis before age 30 (early-onset, EO group) and after 40 (usual-onset, UO group). While there was no overall difference, we did find an excess of pathogenic variants and variants of unknown significance in EO cases when only gastrointestinal CSG were considered (OR 2.25; 95% CI: 1.01-5.06, p value = 0.04). Four EO cases stood out: two with POLE/POLD1 variants in the key exonuclease domain, one with a BMPR1A duplication and one with an EPCAM deletion. Additional germline variants should be considered in future screening recommendations, as they might influence cancer risk.
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Affiliation(s)
- Roseline Vibert
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France.
| | - Jasmine Hasnaoui
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
| | - Alexandre Perrier
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
| | - Alexandra Lefebvre
- Laboratoire de Probabilités, Statistique et Modélisation, CNRS UMR 8001, Sorbonne Université, Paris, France
- Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938 et SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, 184 rue du Faubourg Saint-Antoine, F-75012, Paris, France
| | - Chrystelle Colas
- Département de Génétique, Institut Curie, Paris, France
- INSERM U830, Université Paris Cité, Paris, France
| | - Marion Dhooge
- Service de Gastroentérologie et Oncologie digestive, Hôpital Cochin, AP-HP Centre, Paris, France
| | - Noémie Basset
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
| | - Albain Chansavang
- Fédération de Génétique et Médecine Génomique, Hôpital Cochin, AP-HP, Centre-Université Paris Cité, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université Paris Cité, CARPEM, Paris, France
| | - Camille Desseignes
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
| | - Alex Duval
- Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938 et SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, 184 rue du Faubourg Saint-Antoine, F-75012, Paris, France
| | - Solenne Farelly
- Service de Gastroentérologie et Oncologie digestive, Hôpital Cochin, AP-HP Centre, Paris, France
| | - Nadim Hamzaoui
- Fédération de Génétique et Médecine Génomique, Hôpital Cochin, AP-HP, Centre-Université Paris Cité, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université Paris Cité, CARPEM, Paris, France
| | - Pierre Laurent-Puig
- Institut du Cancer Paris CARPEM, APHP, Département de Médecine Génomique des tumeurs et cancers, APHP, Centre - Université Paris Cité, Paris, France
| | - Julie Metras
- Service de Chirurgie Générale et Digestive, Hôpital Saint-Antoine AP-HP, Sorbonne Université, 184, rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Diane Moliere
- Institut du Cancer Paris CARPEM, APHP, Département de Médecine Génomique des tumeurs et cancers, APHP, Centre - Université Paris Cité, Paris, France
| | - Martine Muleris
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
- Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938 et SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, 184 rue du Faubourg Saint-Antoine, F-75012, Paris, France
| | - Jeanne Netter
- Institut du Cancer Paris CARPEM, APHP, Département de Médecine Génomique des tumeurs et cancers, APHP, Centre - Université Paris Cité, Paris, France
| | - Mehdi Touat
- Service de Neurologie 2 Mazarin, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
- Sorbonne Université, Institut du Cerveau-Paris Brain Institute - ICM, Inserm, CNRS, SIRIC CURAMUS, Onconeurothèque, AP-HP 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
| | - Franck Bielle
- Département de Neuropathologie Raymond Escourolle, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
| | - Karim Labreche
- Sorbonne-Université, équipe BMX-UMS PASS-91 Bd de l'hôpital, F-75013, Paris, France
| | - Romain Nicolle
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
| | - Géraldine Perkins
- Institut du Cancer Paris CARPEM, APHP, Département de Médecine Génomique des tumeurs et cancers, APHP, Centre - Université Paris Cité, Paris, France
| | | | - Florence Coulet
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
- Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938 et SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, 184 rue du Faubourg Saint-Antoine, F-75012, Paris, France
| | - Patrick R Benusiglio
- Département de Génétique médicale et Institut Universitaire de Cancérologie, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne Université, 47-83 Boulevard de l'Hôpital, F-75013, Paris, France
- Sorbonne Université, INSERM, Unité Mixte de Recherche Scientifique 938 et SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, 184 rue du Faubourg Saint-Antoine, F-75012, Paris, France
- Service de Chirurgie Générale et Digestive, Hôpital Saint-Antoine AP-HP, Sorbonne Université, 184, rue du Faubourg Saint-Antoine, 75012, Paris, France
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Otahalova B, Volkova Z, Soukupova J, Kleiblova P, Janatova M, Vocka M, Macurek L, Kleibl Z. Importance of Germline and Somatic Alterations in Human MRE11, RAD50, and NBN Genes Coding for MRN Complex. Int J Mol Sci 2023; 24:ijms24065612. [PMID: 36982687 PMCID: PMC10051278 DOI: 10.3390/ijms24065612] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/11/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023] Open
Abstract
The MRE11, RAD50, and NBN genes encode for the nuclear MRN protein complex, which senses the DNA double strand breaks and initiates the DNA repair. The MRN complex also participates in the activation of ATM kinase, which coordinates DNA repair with the p53-dependent cell cycle checkpoint arrest. Carriers of homozygous germline pathogenic variants in the MRN complex genes or compound heterozygotes develop phenotypically distinct rare autosomal recessive syndromes characterized by chromosomal instability and neurological symptoms. Heterozygous germline alterations in the MRN complex genes have been associated with a poorly-specified predisposition to various cancer types. Somatic alterations in the MRN complex genes may represent valuable predictive and prognostic biomarkers in cancer patients. MRN complex genes have been targeted in several next-generation sequencing panels for cancer and neurological disorders, but interpretation of the identified alterations is challenging due to the complexity of MRN complex function in the DNA damage response. In this review, we outline the structural characteristics of the MRE11, RAD50 and NBN proteins, the assembly and functions of the MRN complex from the perspective of clinical interpretation of germline and somatic alterations in the MRE11, RAD50 and NBN genes.
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Affiliation(s)
- Barbora Otahalova
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
- Department of Biochemistry, Faculty of Natural Science, Charles University in Prague, 12800 Prague, Czech Republic
| | - Zuzana Volkova
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
| | - Jana Soukupova
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
| | - Petra Kleiblova
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
| | - Marketa Janatova
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
| | - Michal Vocka
- Department of Oncology, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
| | - Libor Macurek
- Laboratory of Cancer Cell Biology, Institute of Molecular Genetics, Czech Academy of Sciences, 14220 Prague, Czech Republic
| | - Zdenek Kleibl
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic
- Institute of Pathological Physiology, First Faculty of Medicine and General University Hospital in Prague, 12853 Prague, Czech Republic
- Correspondence: ; Tel.: +420-22496-4287
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Tung ML, Chandra B, Dillahunt K, Gosse MD, Sato TS, Sidhu A. Co-occurrence of VHL and SDHA Pathogenic Variants: A Case Report. Front Oncol 2022; 12:925582. [PMID: 35875079 PMCID: PMC9300936 DOI: 10.3389/fonc.2022.925582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/10/2022] [Indexed: 12/28/2022] Open
Abstract
Von Hippel Lindau(VHL)syndrome presents with cerebellar and spinal hemangioblastomas, renal cell cancer, neuroendocrine pancreatic tumor, and pheochromocytoma and it is caused by germline mutations in the VHL gene. Pathogenic germline variants in the succinate dehydrogenase A (SDHA) gene are associated with paraganglioma and pheochromocytoma. Here we report co-occurrence of germline pathogenic variants in both VHL and SDHA genes in a patient who presented with pancreatic neuroendocrine tumor. As these genes converge on the pseudo-hypoxia signaling pathway, further studies are warranted to determine the significance of co-occurrence of these variants in relation to tumor penetrance, disease severity, treatment response and clinical outcomes in this selected group of patients.
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Affiliation(s)
- Moon Ley Tung
- Division of Medical Genetics and Genomics, The Stead Family Department of Pediatrics, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - Bharatendu Chandra
- Division of Medical Genetics and Genomics, The Stead Family Department of Pediatrics, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - Kyle Dillahunt
- Division of Medical Genetics and Genomics, The Stead Family Department of Pediatrics, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - Matthew D. Gosse
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - T. Shawn Sato
- Division of Pediatric Radiology, The Stead Family Children’s Hospital, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - Alpa Sidhu
- Division of Medical Genetics and Genomics, The Stead Family Department of Pediatrics, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
- *Correspondence: Alpa Sidhu,
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