The phosphatidylinositol 3‐kinase (PI3K)/AKT signalling pathway, which participates as a downstream effector of G protein‐coupled receptors (GPCR) or receptor‐tyrosine kinases (RTK), is known as a crucial regulator of cell survival and its over‐activation has been detected in different cancer types.5 This evidence concerns the gene PIK3CB and cancer.