PTGDR and central nervous system cancer: The high expression of AC010173.1, HOXC‐AS1, HOXA‐AS2, HOXC13‐AS, AC093895.1, AGAP2‐AS1, AC131097.4, AC002456.1, AC010729.1, and AL606970.4 suggested poor prognosis, indicating their role as risk lncRNAs in glioma, while AC074286.1, AL592424.1, DRAIC, AC007938.1, and AC013472.3 were protective lncRNAs.