Ünal et al. found EGFR mutations in 42.6 % of 48 patients with NSCLC in their study in Western Turkey in which 9 of the mutations were at exon 20; 7 were at exon 19 and 2 were at exon 21 (Unal et al. 2013). Here, EGFR is linked to non-small cell lung carcinoma.