Identifying the presence and type of EGFR mutations is crucial in NSCLC patients as the common mutations, exon 19 deletion (19del) and exon point mutation 21-L858R (L858R) [64], are treatable by tyrosine kinase inhibitors such as erlotinib, gefitinib and osimertinib [65]. Here, EGFR is linked to non-small cell lung carcinoma.