Dysregulation of miR-605-5p/STAT2 axis predicts an unfavorable survival in patients with gastric cancer

Our present study aimed to reveal the clinical significance of miR-605-5p/STAT2 axis in patients with gastric cancer (GC). The association of STAT2 or miR-605-5p expression with the clinicopathological characteristics and prognosis in patients with GC was analyzed using the tissue microarray and TCGA RNA-seq data. Pearson correlation analysis was used to evaluate the correlation of STAT2 with miRNAs expression in GC tissues. Cox proportional hazard regression model was conducted to assess whether STAT2 or miR-605-5p expressions was an independent prognostic factor in patients with GC. Consequently, we found that STAT2 expression levels were dramatically elevated in GC tissues and acted as an independent prognostic factor of poor survival in patients with GC. The upregulation of STAT2 was attributable to the dysregulation of miR-605-5p rather than its genetic and epigenetic modulation. MiR-605-5p indicated a negative correlation with STAT2 expression and was an independent prognostic factor of poor survival in patients with GC. In conclusion, dysregulation of miR-605-5p/STAT2 axis predicted a poor survival in patients with GC.