EGFR and non-small cell lung carcinoma: Targeted therapies involving the use of EGFR tyrosine kinase inhibitor (TKI) as a first-line of therapeutic agents in patients with non-small cell lung cancer (NSCLC) with EGFR activating mutations (exon 19 deletions and L858R point mutations) provides superior efficacy, presents dramatic improvement in the progression-free survival, and offers negligible toxicity in comparison to other chemotherapeutics [2, 3].