Among the KEGG pathway enrichment results, several pathways emerged as particularly prominent, including “Pathways in Cancer”, “Endocrine Resistance”, “Lipid and Atherosclerosis”, “PD-L1 Expression and PD-1 Checkpoint Pathway in Cancer”, “T Cell Receptor Signaling Pathway”, “Chemical Carcinogenesis–Receptor Activation”, and “B Cell Receptor Signaling Pathway” (Supplementary Table S1D). This evidence concerns the gene PDCD1 and cancer.