GSEA was performed in the TCGA NSCLC cohort using gene sets from Molecular Signature Database (MSigDB) v.7.0 to investigate the biological features of KEAP1/NFE2L2 mutant NSCLC (16). GSEA was conducted by clusterProfilter R package (17). The P-value estimates the statistical significance of the normalized enrichment score (NES). A gene set with P < 0.05 was determined to be significantly enriched in genes.
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