EGFR and non-small cell lung carcinoma: To clarify the above issues, this study analyzed the situation of NSCLC patients in 31 studies in the cBioPortal database, and the survival of NSCLC patients with normal or abnormal EGFR, treated with TKI or not treated with TKI, and NSCLC patients with different EGFR gene copy numbers were compared for prognostic analysis based on the full exploration of the distribution and probability.