Functionally, PAQR3 overexpression inhibits proliferation, colony formation, migration, invasion, and tumor growth, primarily through the inhibition of extracellular signal-regulated kinase (ERK) and phosphatidylinositol 3-kinase/protein kinase B (PI3K/AKT) pathways and modulation of epithelial-mesenchymal transition (EMT). This evidence concerns the gene PAQR3 and neoplasm.