Furthermore, the KEGG pathway analysis revealed that EGFR, TP53, CDKN2A, CDK4, BRAF, NRAS, HRAS, JAK3, KRAS, MAP2K1, MAP2K2, PIK3CA and RB1 were strongly associated with non-small cell lung cancer. Here, MAP2K1 is linked to non-small cell lung carcinoma.