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São José C, Garcia-Pelaez J, Ferreira M, Arrieta O, André A, Martins N, Solís S, Martínez-Benítez B, Ordóñez-Sánchez ML, Rodríguez-Torres M, Sommer AK, Te Paske IBAW, Caldas C, Tischkowitz M, Tusié MT, Hoogerbrugge N, Demidov G, de Voer RM, Laurie S, Oliveira C. Combined loss of CDH1 and downstream regulatory sequences drive early-onset diffuse gastric cancer and increase penetrance of hereditary diffuse gastric cancer. Gastric Cancer 2023; 26:653-666. [PMID: 37249750 PMCID: PMC10361908 DOI: 10.1007/s10120-023-01395-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 04/30/2023] [Indexed: 05/31/2023]
Abstract
BACKGROUND Germline CDH1 pathogenic or likely pathogenic variants cause hereditary diffuse gastric cancer (HDGC). Once a genetic cause is identified, stomachs' and breasts' surveillance and/or prophylactic surgery is offered to asymptomatic CDH1 carriers, which is life-saving. Herein, we characterized an inherited mechanism responsible for extremely early-onset gastric cancer and atypical HDGC high penetrance. METHODS Whole-exome sequencing (WES) re-analysis was performed in an unsolved HDGC family. Accessible chromatin and CDH1 promoter interactors were evaluated in normal stomach by ATAC-seq and 4C-seq, and functional analysis was performed using CRISPR-Cas9, RNA-seq and pathway analysis. RESULTS We identified a germline heterozygous 23 Kb CDH1-TANGO6 deletion in a family with eight diffuse gastric cancers, six before age 30. Atypical HDGC high penetrance and young cancer-onset argued towards a role for the deleted region downstream of CDH1, which we proved to present accessible chromatin, and CDH1 promoter interactors in normal stomach. CRISPR-Cas9 edited cells mimicking the CDH1-TANGO6 deletion display the strongest CDH1 mRNA downregulation, more impacted adhesion-associated, type-I interferon immune-associated and oncogenic signalling pathways, compared to wild-type or CDH1-deleted cells. This finding solved an 18-year family odyssey and engaged carrier family members in a cancer prevention pathway of care. CONCLUSION In this work, we demonstrated that regulatory elements lying down-stream of CDH1 are part of a chromatin network that control CDH1 expression and influence cell transcriptome and associated signalling pathways, likely explaining high disease penetrance and very young cancer-onset. This study highlights the importance of incorporating scientific-technological updates and clinical guidelines in routine diagnosis, given their impact in timely genetic diagnosis and disease prevention.
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Affiliation(s)
- Celina São José
- i3S-Instituto de Investigação e Inovação em Saúde, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
- IPATIMUP-Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
- Doctoral Programme in Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal
| | - José Garcia-Pelaez
- i3S-Instituto de Investigação e Inovação em Saúde, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
- IPATIMUP-Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
- Doctoral Programme in Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Marta Ferreira
- i3S-Instituto de Investigação e Inovação em Saúde, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
- IPATIMUP-Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
- Department Computer Science Faculty of Science, University of Porto, Porto, Portugal
| | - Oscar Arrieta
- Thoracic Oncology Unit, Department of Thoracic Oncology, Instituto Nacional de Cancerología, Mexico City, Mexico
| | - Ana André
- i3S-Instituto de Investigação e Inovação em Saúde, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
- IPATIMUP-Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Nelson Martins
- i3S-Instituto de Investigação e Inovação em Saúde, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
- IPATIMUP-Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
- Master Programme in Molecular Medicine and Oncology, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Samantha Solís
- INCMNSZ/Instituto de Investigaciones Biomédicas, Unidad de Biología Molecular y Medicina Genómica Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, UNAM Mexico City, Mexico
| | - Braulio Martínez-Benítez
- Pathology Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, INCMNSZ Mexico City, Mexico
| | - María Luisa Ordóñez-Sánchez
- INCMNSZ/Instituto de Investigaciones Biomédicas, Unidad de Biología Molecular y Medicina Genómica Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, UNAM Mexico City, Mexico
| | - Maribel Rodríguez-Torres
- INCMNSZ/Instituto de Investigaciones Biomédicas, Unidad de Biología Molecular y Medicina Genómica Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, UNAM Mexico City, Mexico
| | - Anna K Sommer
- Institute of Human Genetics, Medical Faculty, University of Bonn, Bonn, Germany
| | - Iris B A W Te Paske
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | - Carlos Caldas
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, UK
- Department of Oncology, University of Cambridge, Cambridge, UK
- Cambridge Experimental Cancer Medicine Centre (ECMC), CRUK Cambridge Centre, NIHR Cambridge Biomedical Research Centre, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Marc Tischkowitz
- Department of Medical Genetics, National Institute for Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, UK
| | - Maria Teresa Tusié
- INCMNSZ/Instituto de Investigaciones Biomédicas, Unidad de Biología Molecular y Medicina Genómica Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, UNAM Mexico City, Mexico
| | - Nicoline Hoogerbrugge
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | - German Demidov
- Institute of Medical Genetics and Applied Genomics, Tübingen, Germany
| | - Richarda M de Voer
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | - Steve Laurie
- The Barcelona Institute of Science and Technology, CNAG-CRG, Centre for Genomic Regulation (CRG), Barcelona, Spain
| | - Carla Oliveira
- i3S-Instituto de Investigação e Inovação em Saúde, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.
- IPATIMUP-Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal.
- FMUP-Faculty of Medicine of the University of Porto, Porto, Portugal.
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