The expression of NK1R was detected in the NSCLC cell lines used in this study, in which A549, NCI-H1944, and NCI-H226 harbored wild-type EGFR, HCC827 harbored EGFR/Del19, and NCI-H1975 harbored EGFR/L858R/T790M. Here, EGFR is linked to non-small cell lung carcinoma.