KEGG pathway analysis (Figure 7 and Supplementary Table S4) showed that the IAPs were most significantly enriched in ubiquitin-mediated proteolysis (p = 5.93E-08), followed by small cell lung cancer, toxoplasmosis, pathways in cancer, NOD-like receptor signaling pathway, NF-κB signaling pathway, focal adhesion, and apoptosis. This evidence concerns the gene NFKB1 and small cell lung carcinoma.