The epidermal growth factor receptor (EGFR) belongs to the ErbB family (also known as the EGFR family) of receptor tyrosine kinases (RTK). EGFR family comprises four distinct receptors: the EGFR (ErbB1, HER1), ErbB-2 (HER2, neu in rodents), ErbB-3 (HER3) and ErbB-4 (HER4). It is worth mentioning that EGFR family...