Although there was overlap between eight of the treatment‐related symptoms identified from the ECOG data26 and the symptomatic AEs identified in this study, we identified four additional symptomatic AEs (sores in mouth or tongue, rash, dry skin, cold in hands or feet) as we focused specifically on the EGFR Exon 20ins form of the NSCLC disease. This evidence concerns the gene EGFR and non-small cell lung carcinoma.