For example, a guideline made by Chinese Society of Pathology et al. recommended multiplexed PCR test including necessary genes (EGFR, ALK, ROS1 and MET-exon 14 skipping) and expanded genes (MET amplification, HER2, BRAF, RET, KRAS, NTRK) for the molecular tests in NSCLC as a priority [34]. The gene discussed is ERBB2; the disease is non-small cell lung carcinoma.