By: Jenny Park, PharmD Candidate c/o 2015 – On July 12, 2013, the FDA approved afatinib (GilotrifTM) as a new first-line treatment for patients with late-stage non-small cell lung cancer (NSCLC), a type of carcinoma where specific types of epidermal growth factor receptor (EGFR) gene mutations are expressed.1 The drug afatinib irreversibly blocks EGFR, also…