lncRNA MYOSLID is up‐regulated in gastric cancer and associated with poor prognosis. A, The relative expression of lncRNA MYOSLID in gastric cancer tissues and normal tissues was analysed using TCGA data. B, The Kaplan‐Meier curve depicts the overall survival of 358 patients with GC. C, Real‐time quantitative PCR was used to detect lncRNA MYOSLID expression in gastric cancer tissues and adjacent non‐tumour tissues (n = 75). D, Based on the expression level of lncRNA MYOSLID, the Kaplan‐Meier curve depicts the overall survival curve of 75 patients with gastric cancer. E, Real‐time quantitative PCR was used to analyse the expression of lncRNA MYOSLID in normal gastric epithelial cell line (GES‐1) and gastric cancer cells. Error bars indicate mean ± standard errors of the mean. **P < .01, ***P < .001