PTGDR and anaplastic astrocytoma: Wang et al. [109] analyzed expression profiles of four lncRNA, namely, AGAP2 antisense RNA 1 (AGAP2-AS1), long intergenic non-protein coding RNA 1198 (LINC01198), TPT1 antisense RNA 1 (TPT1-AS1) and MIR155 host gene (MIR155HG) of anaplastic astrocytomas patients.