KEGG pathway analysis further demonstrated that the DE–BCSCs play pivotal roles in various cancer-related pathways, including breast cancer, hepatocellular carcinoma, gastric cancer, pathways regulating the pluripotency of stem cells, cytokine–cytokine receptor interaction, and the TNF and IL-17 signaling pathways (Figure 1D). The gene discussed is TNF; the disease is hepatocellular carcinoma.