Fig. 1

lncRNA XIST is significantly up-regulated in gastric cancer tissues and cell lines. a Relative expression level of lncRNA XIST in gastric cancer tissues (n = 106) and adjacent normal tissues, lncRNA XIST expression was significantly higher in gastric cancer tissues as compared with adjacent normal tissues (n = 106) (P < 0.001). b Relative expression level of lncRNA XIST in gastric cancer tissues with (n = 28) and without distant metastasis, lncRNA XIST expression was lower in tissues without distant metastasis compared with tissues with distant metastasis (n = 78) (P = 0.001). c Relative expression level of lncRNA XIST in different clinical stage (*P < 0.05, **P < 0.001). d Kaplan-Meier curve of overall-survival in gastric cancer patients with high lncRNA XIST level (n = 54) and low lncRNA XIST level (n = 52), the overall survival time was shorter in patients with high lncRNA XIST than those with low lncRNA XIST (P = 0.002)