Families with autosomal dominant inherited predisposition to gastric cancer have been described. More recently, germlineE-cadherin/CDH1mutations have been identified in hereditary diffuse gastric cancer kindred. The need to have protocols to manage and counsel these families in the clinic led a group of geneticists, gastroenterologists, surgeons, oncologists, pathologists, and molecular biologists to convene a workshop to produce consensus statements and guidelines for familial gastric cancer. Review of the available cancer pathology from people belonging to families with documented germlineE-cadherin/CDH1mutations confirmed that the gastric cancers were all of the diffuse type. Criteria to define the different types of familial gastric cancer syndromes were agreed. Foremost among these criteria was that review of histopathology should be part of the evaluation of any family with aggregation of gastric cancer cases. Guidelines for genetic testing and counselling in hereditary diffuse gastric cancer were produced. Finally, a proposed strategy for clinical management in families with high penetrance autosomal dominant predisposition to gastric cancer was defined.
- gastric cancer
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* The overview and guidelines are the result of consensus statements agreed during the First Workshop of the International Gastric Cancer Linkage Consortium (IGCLC) held on 4-5 June 1999 at Churchill College, University of Cambridge, Cambridge, UK.