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Rofes P, González S, Navarro M, Moreno-Cabrera JM, Solanes A, Darder E, Carrasco E, Iglesias S, Salinas M, Gómez C, Velasco À, Tuset N, Varela M, Llort G, Ramon Y Cajal T, Grau È, Dueñas N, de la Ossa Merlano N, Matías-Guiu X, Rivera B, Balmaña J, Pineda M, Brunet J, Capellá G, Del Valle J, Lázaro C. Paired Somatic-Germline Testing of 15 Polyposis and Colorectal Cancer-Predisposing Genes Highlights the Role of APC Mosaicism in de Novo Familial Adenomatous Polyposis. J Mol Diagn 2021; 23:1452-1459. [PMID: 34454113 DOI: 10.1016/j.jmoldx.2021.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/02/2021] [Accepted: 07/21/2021] [Indexed: 11/28/2022] Open
Abstract
Familial adenomatous polyposis (FAP) is an autosomal dominant syndrome responsible for 1% of colorectal cancers (CRCs). Up to 90% of classic FAPs are caused by inactivating mutations in APC, and mosaicism has been previously reported in 20% of de novo cases, usually linked to milder phenotypic manifestations. This study aimed to explore the prevalence of mosaicism in 11 unsolved cases of classic FAP and to evaluate the diagnostic yield of somatic testing. Paired samples of colorectal polyps, tumors, and/or mucosa were analyzed using a custom next-generation sequencing panel targeting 15 polyposis and CRC-predisposing genes. Whenever possible, the extension of mosaicism to blood or sperm was also examined. Of 11 patients with classic adenomatous polyposis, a mosaic pathogenic variant in APC was identified in 7 (64%). No other altered genes were identified. In two of seven patients (29%), mosaicism was found restricted to colonic tissues, whereas in five of seven patients (71%), it was extended to the blood. Germline affectation was confirmed in one patient. We report the first analysis at a somatic level of 15 genes associated with CRC susceptibility, which highlights the role of APC mosaicism in classic FAP etiology. The results further reinforce the importance of testing target tissues when blood test results are negative.
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Affiliation(s)
- Paula Rofes
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Sara González
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Matilde Navarro
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Hereditary Cancer Program, Program for Predictive and Personalized Medicine of Cancer-Germans Trias i Pujol Research Institute (PMPPC-IGTP), Badalona, Spain
| | - José Marcos Moreno-Cabrera
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Hereditary Cancer Program, Program for Predictive and Personalized Medicine of Cancer-Germans Trias i Pujol Research Institute (PMPPC-IGTP), Badalona, Spain
| | - Ares Solanes
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Hereditary Cancer Program, Program for Predictive and Personalized Medicine of Cancer-Germans Trias i Pujol Research Institute (PMPPC-IGTP), Badalona, Spain
| | - Esther Darder
- Hereditary Cancer Program, Catalan Institute of Oncology, Girona Institute for Biomedical Research (IDIBGi), Girona, Spain
| | - Estela Carrasco
- Hereditary Cancer Genetics Group, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Sílvia Iglesias
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain
| | - Mónica Salinas
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain
| | - Carolina Gómez
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain
| | - Àngela Velasco
- Hereditary Cancer Program, Catalan Institute of Oncology, Girona Institute for Biomedical Research (IDIBGi), Girona, Spain
| | - Noemí Tuset
- Medical Oncology Department, Arnau de Vilanova University Hospital, Lleida, Spain
| | - Mar Varela
- Department of Pathology, Bellvitge University Hospital, Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain
| | - Gemma Llort
- Medical Oncology Department, Parc Taulí University Hospital, Sabadell, Spain
| | | | - Èlia Grau
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Hereditary Cancer Program, Program for Predictive and Personalized Medicine of Cancer-Germans Trias i Pujol Research Institute (PMPPC-IGTP), Badalona, Spain
| | - Núria Dueñas
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Napoleón de la Ossa Merlano
- Department of Pathology, General University Hospital of Catalonia, QuironSalud Group, Sant Cugat del Vallès, Spain
| | - Xavier Matías-Guiu
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Department of Pathology, Bellvitge University Hospital, IDIBELL, University of Barcelona, Barcelona, Spain; Department of Pathology, Arnau de Vilanova University Hospital, Lleida Institute for Biomedical Research (IRBLleida), University of Lleida, Lleida, Spain
| | - Bárbara Rivera
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Gerald Bronfman Department of Oncology, McGill University, Montreal, Quebec, Canada
| | - Judith Balmaña
- Hereditary Cancer Genetics Group, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Marta Pineda
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Joan Brunet
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Hereditary Cancer Program, Catalan Institute of Oncology, Girona Institute for Biomedical Research (IDIBGi), Girona, Spain
| | - Gabriel Capellá
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Jesús Del Valle
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Conxi Lázaro
- Hereditary Cancer Program, Program in Molecular Mechanisms and Experimental Therapy in Oncology (Oncobell), Bellvitge Institute for Biomedical Research (IDIBELL), Catalan Institute of Oncology, l'Hospitalet del Llobregat, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain.
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2
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Talseth-Palmer BA. The genetic basis of colonic adenomatous polyposis syndromes. Hered Cancer Clin Pract 2017; 15:5. [PMID: 28331556 PMCID: PMC5353802 DOI: 10.1186/s13053-017-0065-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 03/07/2017] [Indexed: 02/08/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common forms of cancer worldwide and familial adenomatous polyposis (FAP) accounts for approximately 1% of all CRCs. Adenomatous polyposis syndromes can be divided into; familial adenomatous polyposis (FAP) – classic FAP and attenuated familial adenomatous polyposis (AFAP), MUTYH-associated polyposis (MAP), NTHL1-associated polyposis (NAP) and polymerase proofreading-associated polyposis (PPAP). The polyposis syndromes genetics and clinical manifestation of disease varies and cases with clinical diagnosis of FAP might molecularly show a different diagnosis. This review examines different aspects of the adenomatous polyposis syndromes genetics and clinical manifestation of disease; in addition the genotype-phenotype and modifier alleles of FAP will be discussed. New technology has made it possible to diagnose some of the APC mutation negative patients into their respective syndromes. There still remain many molecularly undiagnosed adenomatous polyposis patients indicating that there remain causative genes to be discovered and with today’s technology these are expected to be identified in the near future. The knowledge about the role of modifier alleles in FAP will contribute to improved pre-symptomatic diagnosis and treatment. New novel mutations will continually be discovered in genes already associated with disease and new genes will be discovered that are associated with adenomatous polyposis. The search for modifier alleles in FAP should be made a priority.
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Affiliation(s)
- Bente A Talseth-Palmer
- Department of Laboratory Medicine, Children's and Women's Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, 7491 Norway.,Clinic for Medicine, Møre og Romsdal Hospital Trust, Molde, Norway.,School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW Australia.,Hunter Medical Research Institute, Newcastle, NSW Australia.,Clinic for Medicine, Library, Molde Hospital, Parkvegen 84, Molde, 6407 Norway
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Mayrhofer M, Gourain V, Reischl M, Affaticati P, Jenett A, Joly JS, Benelli M, Demichelis F, Poliani PL, Sieger D, Mione M. A novel brain tumour model in zebrafish reveals the role of YAP activation in MAPK- and PI3K-induced malignant growth. Dis Model Mech 2017; 10:15-28. [PMID: 27935819 PMCID: PMC5278524 DOI: 10.1242/dmm.026500] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 11/11/2016] [Indexed: 12/12/2022] Open
Abstract
Somatic mutations activating MAPK and PI3K signalling play a pivotal role in both tumours and brain developmental disorders. We developed a zebrafish model of brain tumours based on somatic expression of oncogenes that activate MAPK and PI3K signalling in neural progenitor cells and found that HRASV12 was the most effective in inducing both heterotopia and invasive tumours. Tumours, but not heterotopias, require persistent activation of phospho (p)-ERK and express a gene signature similar to the mesenchymal glioblastoma subtype, with a strong YAP component. Application of an eight-gene signature to human brain tumours establishes that YAP activation distinguishes between mesenchymal glioblastoma and low grade glioma in a wide The Cancer Genome Atlas (TCGA) sample set including gliomas and glioblastomas (GBMs). This suggests that the activation of YAP might be an important event in brain tumour development, promoting malignant versus benign brain lesions. Indeed, co-expression of dominant-active YAP (YAPS5A) and HRASV12 abolishes the development of heterotopias and leads to the sole development of aggressive tumours. Thus, we have developed a model proving that neurodevelopmental disorders and brain tumours might originate from the same activation of oncogenes through somatic mutations, and established that YAP activation is a hallmark of malignant brain tumours.
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Affiliation(s)
- Marie Mayrhofer
- Institute for Toxicology and Genetics, Hermann von Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Victor Gourain
- Institute for Toxicology and Genetics, Hermann von Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Markus Reischl
- Institute for Applied Informatics at Karlsruhe Institute of Technology, Hermann von Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Pierre Affaticati
- Tefor Core Facility, Paris-Saclay Institute of Neuroscience, CNRS, Université Paris-Saclay, Gif-sur-Ivette 91190, France
| | - Arnim Jenett
- Tefor Core Facility, Paris-Saclay Institute of Neuroscience, CNRS, Université Paris-Saclay, Gif-sur-Ivette 91190, France
| | - Jean-Stephane Joly
- Tefor Core Facility, Paris-Saclay Institute of Neuroscience, CNRS, Université Paris-Saclay, Gif-sur-Ivette 91190, France
| | - Matteo Benelli
- Centre for Integrative Biology, University of Trento, Via Sommarive 9, Trento 38123, Italy
| | - Francesca Demichelis
- Centre for Integrative Biology, University of Trento, Via Sommarive 9, Trento 38123, Italy
| | - Pietro Luigi Poliani
- Department of Molecular and Translational Medicine, Pathology Unit, University of Brescia School of Medicine, Spedali Civili Brescia, Brescia 25123, Italy
| | - Dirk Sieger
- Centre for Neuroregeneration, The University of Edinburgh, The Chancellor's Building, 49 Little France Crescent, Edinburgh EH16 4SB, UK
| | - Marina Mione
- Institute for Toxicology and Genetics, Hermann von Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, Germany
- Centre for Integrative Biology, University of Trento, Via Sommarive 9, Trento 38123, Italy
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Melton SD, Genta RM, Souza RF. Biomarkers and molecular diagnosis of gastrointestinal and pancreatic neoplasms. Nat Rev Gastroenterol Hepatol 2010; 7:620-8. [PMID: 20924366 PMCID: PMC3197699 DOI: 10.1038/nrgastro.2010.153] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Standard protocols for the diagnosis of neoplasms in the gastrointestinal tract are based on histopathologic analysis in combination with clinical information. With the completion of the Human Genome Project in 2003, our understanding of the contribution of genetics to human disease has increased exponentially. This knowledge is gradually being incorporated into clinical decision-making. However, the rate at which molecular biomarkers are validated for use in mainstream clinical applications has lagged far behind that of biomarker discovery. Nevertheless, a number of molecular biomarkers are available for use in the diagnosis and management of gastrointestinal tract neoplasms. This article reviews the most common molecular biomarkers currently available for neoplasms of the luminal gastrointestinal tract and pancreas. In neoplasms of the esophagus, for which no biomarkers are currently used in routine clinical practice, those that have shown the most promise in early clinical validation studies are discussed.
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Affiliation(s)
- Shelby D. Melton
- Departments of Pathology and Laboratory Medicine, University of Texas Southwestern Medical Center, Dallas, TX, VA North Texas Health Care System, University of Texas Southwestern Medical Center, Dallas, TX
| | - Robert M. Genta
- Departments of Pathology and Laboratory Medicine, University of Texas Southwestern Medical Center, Dallas, TX, VA North Texas Health Care System, University of Texas Southwestern Medical Center, Dallas, TX, Caris Research Institute, Irving, TX
| | - Rhonda F. Souza
- Department of Medicine, VA North Texas Health Care System & University of Texas Southwestern Medical Center, Dallas, TX, Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX
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