Table 1.

The Gastric Linkage Consortium Criteria for Hereditary Diffuse Gastric Cancer requires Criteria 1 or Criteria 2 to be met before the diagnosis of HDGC.

Gastric Cancer Linkage Consortium Criteria for Hereditary Diffuse Gastric Cancer9,10,16
Criteria 1	Two or more documented cases of diffuse gastric cancer in first or second degree relatives, with at least one diagnosed before the age of 50
Criteria 2	Three or more cases of documented diffuse gastric cancer in first/second degree relatives, independent of age of onset