EGFR and non-small cell lung carcinoma: The most common EGFR mutations associated with NSCLC (E746-A750 del and L858R), which together accounted for 86–90% of the total number of EGFR mutations (45% for E746-A750 del and 40–45% for L858R) [31,32,33], were investigated in 24 patients using IHC (Table 1).