ERBB2 and gastroesophageal junction adenocarcinoma: The median (interquartile range) age of the linked population at diagnosis was 65.0 (55.0–73.0) years (Table 5), with most patients being male (76.4%) or having human epidermal growth factor receptor 2 (HER2)-negative (54.8%) G/GEJ adenocarcinoma.