PVT1 and gastric adenocarcinoma: In addition, a great difference was found in the expression of lncRNA DLEU1 and lncRNA PVT1 between gastric adenocarcinoma tumor tissues and normal tissues, but little difference was found in the expression level in tumor tissues, resulting in the illusion that a high expression of lncRNA DLEU1 and lncRNA PVT1 could reduce the risk of patients in tumor tissues.