TY - JOUR AU - Brauchle, Felix AU - Rapp, Daniel AU - Senel, Makbule AU - Huss, André AU - Dreyhaupt, Jens AU - Klose, Veronika AU - Süße, Marie AU - Stürner, Klarissa Hanja AU - Leypoldt, Frank AU - Tumani, Hayrettin AU - Lewerenz, Jan TI - Clinical associations and characteristics of the polyspecific intrathecal immune response in elderly patients with non-multiple sclerosis chronic autoimmune-inflammatory neurological diseases - a retrospective cross-sectional study. JO - Frontiers in neurology VL - 14 SN - 1664-2295 CY - Lausanne PB - Frontiers Research Foundation M1 - DZNE-2023-00706 SP - 1193015 PY - 2023 AB - The polyspecific intrathecal immune response (PSIIR), aka MRZ reaction (M = measles, R = rubella, Z = zoster, optionally Herpes simplex virus, HSV) is defined as intrathecal immunoglobulin synthesis (IIS) for two or more unrelated viruses. Although an established cerebrospinal fluid (CSF) biomarker for multiple sclerosis (MS), a chronic autoimmune-inflammatory neurological disease (CAIND) of the central nervous system (CNS) usually starting in young adulthood, the full spectrum of CAINDs with a positive PSIIR remains ill defined.In this retrospective, cross-sectional study, patients with CSF-positive oligoclonal bands (OCB) and - to enrich for non-MS diagnoses - aged ≥50 years were enrolled.Of 415 with PSIIR testing results (MRZ, HSV optional), 76 were PSIIR-positive. Of these, 25 (33 KW - MRZ reaction (Other) KW - autoimmue disease (Other) KW - multiple sclerosis (Other) KW - neuroinflammation (Other) KW - polyspecific intrathecal immune response (Other) LB - PUB:(DE-HGF)16 C6 - pmid:37396770 C2 - pmc:PMC10311206 DO - DOI:10.3389/fneur.2023.1193015 UR - https://pub.dzne.de/record/258940 ER -