There are various signalling pathways involved in the pathogenesis of BC, including P53, ERK, PTEN, ATM, and PIK3/AKT regulates cell growth, cell proliferation, cell differentiation, metabolism, and apoptosis, while Wnt/βcatenin governs stem cell renewal, cell proliferation, and differentiation [5–12]. The gene discussed is PIK3CG; the disease is breast cancer.