CXCL13 and neurosarcoidosis: Moreover, the level of CSF-CXCL13 did not significantly (p > 0.05) differentiate MS, neuroinfectious diseases of unknown pathogens (I-UPs), TBE, VZV infections, limbic encephalitis, neurosarcoidosis, paraneoplastic syndrome (other than limbic encephalitis), and bacterial meningitis from each other.