The largest subnetwork contains many pathways related to cell proliferation and division, and maintenance of life activities such as cell cycle, DNA replication, ubiquitin-mediated proteolysis, etc. The pathways involved in the second subnetwork are related to malignant tumour progression, such as MAPK signaling pathway, ERBB signaling pathway, VEGF signaling pathway, etc. The third major sub-network is related to ribosomes. This evidence concerns the gene EGFR and cancer.