Association of MALAT1 expression in gastric carcinoma and the significance of its clinicopathologic features in an Iranian patient

The aim of this study was to evaluate the expression of and the relationship between its expression with clinical characteristics in an Iranian gastric cancer patient. Long non-coding RNAs (LncRNAs) play critical roles in the initiation and development of gastric cancer. Metastasis-associated lung adenocarcinoma transcript 1 ( ) is a highly conserved lncRNA and plays key roles in various types of human cancer. However, our understanding of the role of lncRNAs in the occurrence and development of gastric cancer is not fully clear. This cross-sectional study was performed on 41 gastric tumor tissue samples with matched normal adjacent tumor tissues. The RNA level of lncRNA gene was assessed using quantitative Real-time polymerase chain reaction. was used as an internal control. The 2 method was adopted to determine expression fold changes. A significant association was observed between the levels of in gastric tumor tissues compared with normal adjacent tissues (mean= 1.558, = 0.014). In addition, clinicopathologic data on RNA expression levels in gastric cancer tissues was evaluated. No significant association was observed between the relative expression of and the stage, grade, infection, and tumor size groups among gastric cancer patients ( = 0.82, = 0.904, = 0.407, and = 0.701, respectively). The current results showed that has a significant association in gastric cancer. The expression of may be used as a diagnostic biomarker for monitoring gastric cancer patients.