EGFR and gastric cancer: In gastric cancer, EGFR is overexpressed in 18–91% of primary tumours and/or metastasis and correlated with a poor prognosis (Tokunaga et al, 1995; Albanell et al, 2001; Mendelsohn, 2002; Takehana et al, 2003; Pinto et al, 2007).