DMBT1 and gastric cancer: Gastric cancer has been linked to deletion in malignant brain tumors 1 protein (DMBT1), triosephosphate isomerase (TPI1), and cyclostatin B (CSTB) (Liang et al., 2022; Ai et al., 2010) Many target molecules, including extracellular RNA, amino acids, proteins, and glycoproteins have been the subject of studies on salivary biomarkers (Ahsan, 2019).