In the meantime, there is a large number of studies on CXCL13, mainly in neuroborreliosis but also to a lesser extent in various other infectious, autoimmune, and malignant neurological diseases with different study populations, diseases, and detected cut-offs for CSF-CXCL13 [8,10,13,14,15,16,18,19,20,26,27,32,37,40,42,43]. Here, CXCL13 is linked to Lyme disease.