PIK3CA and cancer: In particular, SW48 and LIM1215 cancer cells, that are wild type (WT) for KRAS, BRAF, NRAS and PIK3CA genes, and GEO cancer cells, that have a KRAS codon 12 mutation, are sensitive to the anti-epidermal growth factor receptor (EGFR) monoclonal antibody cetuximab [23].