Microarray analysis. RNA expression profiling was performed using the Agilent human lncRNA microarray V.2.0 platform (GPL18109; Agilent Technologies, Inc.). Quantile normalization and subsequent **data** processing were performed using Agilent Gene Spring Software 11.5 (Agilent Technologies, Inc.). Heatmaps representing differentially regulated genes were generated using Cluster software (version 3.0, http://www. clustersoft.com/). The microarray analysis was performed by Beijing Genomics Institute/HuaDa-Shenzhen. The lncRNAs were differentially expressed on the basis of the criteria of log2FC>1 or log2FC<-1, and P<0.05. The heatmap between the glioma tumor tissues and controls (3 vs. 3) was drawn based on the same criteria.