Using a KEGG analysis, we further explored proteoglycans related to cancer (MAPK14, DDX5, STAT3, EGFR, PXN, GRB2, CBL) and various pathways, including mitogen‐activated protein kinase (MAPK) signalling (MAPK14, DUSP3, EGFR, GRB2), FoxO signalling (MAPK14, STAT3, EGFR, GRB2) and phosphatidylinositol‐4,5‐bisphosphate 3‐kinase (PI3K)‐Akt signalling (CDK4, EGFR, GRB2, LAMA5). Here, PXN is linked to cancer.