Similarly, the ACRG-based (Asian Cancer Research Group) molecular classification identifies an equal number of stomach tumor subtypes, i.e., MSS;TP53− (MicroSatellite Stable; TP53 inactive), MSS/TP53+, MSI, and EMT (Epithelial to Mesenchymal Transition) [12]. The gene discussed is TP53; the disease is gastric neoplasm.