Results indicated that eight genes (AKAP13, ETS1, GGCT, HHIP, KCNK3, KLF2, OLR1, PPIL1) showed significant differential expression between normal samples and NSCLC samples in TCGA database with a p-value ≤ 0.05 (Figure 6). This evidence concerns the gene PPIL1 and non-small cell lung carcinoma.