With the development of genomic sequencing, more uncommon EGFR mutations have been identified, in which EGFR exon 20 insertions (ex20ins) constitute a heterogeneous subset of EGFR‐activating alterations, ranking third with a prevalence of 4%–10% in EGFR‐mutant NSCLC.3, 4, 5. Here, EGFR is linked to non-small cell lung carcinoma.