The mean concentrations of CSF CXCL13 in glioblastomas, other gliomas, germ cell tumors, metastatic tumors, other tumors, multiple sclerosis, iNPH, and other diseases were 21 ± 214, 24 ± 45, 38 ± 77, 176 ± 390, 4 ± 3, 36 ± 72, 14 ± 31, and 233 ± 498 pg/mL, respectively. Here, CXCL13 is linked to testicular germ cell tumor.