EGFR and non-small cell lung carcinoma: Also during the last decade, a number of genetic alterations have been described in NSCLC, being Kristen Rat Sarcoma viral oncogene (KRAS), Epidermal Growth Factor Receptor (EGFR) and Anaplastic Lymphoma Kinase (ALK) the most commonly altered oncogenes acting as tumor genomic drivers [10].