EGFR and cancer: One of the potential prognostic factors is the epidermal growth factor receptor (EGFR), which has been identified as an important prognostic marker in several other cancer types (Mellon et al, 1995; Fischer-Colbrie et al, 1997; Inada et al, 1999; Kersemaekers et al, 1999; Galizia et al, 2006).