KRAS and non-small cell lung carcinoma: The 25 NSCLC cell lines consisted of 8 EGFR-mutant, 6 KRAS-mutant, 1 HER4-mutant, 1 NRAS-mutant, 1 PIK3CA-mutant, 1 EML4-ALK fusion, 1 HER2-amplified, and 6 cell lines without gene alterations listed.