PIK3CA and neoplasm: For instance, they prevent the development of precancerous lesions, regulate the cell cycle, modulate CRC cell proliferation, promote tumor cell apoptosis, inhibite epithelial-mesenchymal transition, reverse drug resistance, and modulate gut microbiota by acting on several key signaling pathways, such as PI3K/Akt/mTOR, Wnt/β-catenin, and EGFR/ERK/MAPK.