CASC9 and central nervous system cancer: The increasing vital roles of lncRNAs have been involved in more and more extensive fields, including human tumours, cardiovascular system disorder, or metabolic diseases.15, 16, 17, 18, 19 In this study, our data concluded that CASC9 was dramatically high‐expressed in glioma tissue and cells, illustrating the pessimistic role of CASC9 in glioma patients.