EGFR and cancer: For example, the epidermal growth factor receptor (EGFR) is frequently overexpressed in cancer cells and may be used to selectively target nanosystems (or drugs) via the therapeutic monoclonal antibody cetuximab (the FDA-approved drug for the treatment of colorectal and lung cancer) [9,10,11,12,13,14,15,16,17,18,19,20,21,22].