EGFR and non-small cell lung carcinoma: Exon 19-microdeletions (exon 19dels) or deletion-insertions (exon 19delins), most commonly occurring at the p.E746-A750 region and less frequently involving other positions between E746 and I759, and the point-substitution p.L858R (L858R) in exon 21, represent together nearly 90% of all EGFR-mutations in NSCLC [1,2].