The results of GO and KEGG pathway enrichment analysis showed that multiple signalling pathways associated with tumour development, such as protein transport, beta-catenin binding, cadherin binding, MAPK pathway, mTOR pathway, p53 pathway and VEGF pathway, were enriched by differential genes between invasive and non-invasive tumour groups (Figure 2). The gene discussed is CDH17; the disease is neoplasm.