• Carla Oliveira, Hugo Pinheiro, Joana Figueiredo, Raquel Seruca, and Fátima Carneiro.
• Ipatimub-Institute of Molecular Pathology and Immunology & Instituto Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal; Department of Pathology and Oncology, Faculty of Medicine, University of Porto, Porto, Portugal.
• Lancet Oncol. 2015 Feb 1; 16 (2): e60-70.

AbstractFamilial gastric cancer comprises at least three major syndromes: hereditary diffuse gastric cancer, gastric adenocarcinoma and proximal polyposis of the stomach, and familial intestinal gastric cancer. The risk of development of gastric cancer is high in families affected b-y these syndromes, but only hereditary diffuse gastric cancer is genetically explained (caused by germline alterations of CDH1, which encodes E-cadherin). Gastric cancer is also associated with a range of several cancer-associated syndromes with known genetic causes, such as Lynch, Li-Fraumeni, Peutz-Jeghers, hereditary breast-ovarian cancer syndromes, familial adenomatous polyposis, and juvenile polyposis. We present contemporary knowledge on the genetics, pathogenesis, and clinical features of familial gastric cancer, and discuss research and technological developments, which together are expected to open avenues for new genetic testing approaches and novel therapeutic strategies. Copyright © 2015 Elsevier Ltd. All rights reserved.

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