KDELR1 and central nervous system cancer: Several datasets showed that KDELR1 expression was higher in glioma patients aged ≥45 years than in those aged <45 years, including mRNA-array_301 and mRNAseq_325 of CGGA, TGGA_glioma, GSE4271, and GSE13041 (GPL96) (P < 0.05; Figures 3A–E).