And the GSEA analysis indicated that ubiquitin-mediated proteolysis, cell cycle, purine metabolism, basal transcription factors, pancreatic cancer, lysosome, prostate cancer, oocyte meiosis, pathways in cancer, small cell lung cancer, RNA degradation and insulin signaling pathway were enrichment in SLC1A4 high-expressed group (Figure 4H). This evidence concerns the gene SLC1A4 and small cell lung carcinoma.