Fluorescent amplification-refractory mutation system (ARMS)-PCR analysis of mutations in nine genes of lung cancer on 18 October 2023, detected HER2 exon 20 insertion mutation (A775_G776insYVMA), which is known to be associated with aggressive tumor behavior, and found no EGFR mutations and no ALK, ROS1, or RET rearrangement, and others. Here, ERBB2 is linked to neoplasm.