PMID- 36389693 OWN - NLM STAT- MEDLINE DCOM- 20221121 LR - 20221121 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 13 DP - 2022 TI - Anti-NMDAR encephalitis in Crohn's disease undergoing long-term infliximab treatment: A case report. PG - 957575 LID - 10.3389/fimmu.2022.957575 [doi] LID - 957575 AB - Infliximab, a chimeric monoclonal antibody against anti-tumor necrosis factor-alpha (TNF-alpha), has revolutionized the management of inflammatory bowel disease. However, a recent nested case-control study showed that anti-TNF-alpha therapy exposure in patients with autoimmune diseases is associated with an increased risk of inflammatory central nervous system (CNS) events. A 27-year-old man diagnosed with Crohn's disease at 17 years of age was referred to our clinic for suffering with Wernicke's aphasia and the right-hand weakness over two weeks. Nine years of treatment for Crohn's disease with infliximab anti-TNF-alpha therapy was well tolerated. An initial MRI revealed diffuse leptomeningeal enhancement along the bilateral cerebral sulci without any parenchymal abnormalities. Cerebrospinal fluid (CSF) and serum N-methyl-D-aspartate receptor (NMDAR) antibody testing yielded positive results. Anti-NMDAR encephalitis was diagnosed, and the patient was treated with rituximab. A follow-up brain MRI showed new multiple cerebral lesions in the left insular cortex and subcortical white matter of the left frontal and temporal gyri. Approximately 8 months after symptom onset, the CSF and serum NMDAR antibody converted to negative. Twelve months later, the patient fully recovered from anti-NMDAR encephalitis without any neurological deficits and is currently being treated with the anti-interleukin 12/23 agent ustekinumab for Crohn's disease. This is the first report of not only a patient with infliximab-associated anti-NMDAR encephalitis in Crohn's disease but also of an inflammatory non-demyelinating CNS event during long-term suppression of TNF-alpha. Our case highlights the need for clinicians to recognize the possibility of a paradoxical autoimmune response occurring with novel biological therapies. CI - Copyright (c) 2022 Oh, Kwon, Lee and Lee. FAU - Oh, Shin Ju AU - Oh SJ AD - Center for Crohn's and Colitis, Department of Gastroenterology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, South Korea. FAU - Kwon, Young Nam AU - Kwon YN AD - Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea. FAU - Lee, Chang Kyun AU - Lee CK AD - Center for Crohn's and Colitis, Department of Gastroenterology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, South Korea. FAU - Lee, Jin San AU - Lee JS AD - Department of Neurology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, South Korea. LA - eng PT - Case Reports PT - Research Support, Non-U.S. Gov't DEP - 20221031 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - B72HH48FLU (Infliximab) RN - 0 (Tumor Necrosis Factor Inhibitors) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Male MH - Humans MH - Infant, Newborn MH - Adult MH - *Anti-N-Methyl-D-Aspartate Receptor Encephalitis/diagnosis MH - Infliximab/adverse effects MH - *Crohn Disease/complications/drug therapy MH - Case-Control Studies MH - Tumor Necrosis Factor Inhibitors MH - Tumor Necrosis Factor-alpha/therapeutic use PMC - PMC9659735 OTO - NOTNLM OT - Crohn 's disease OT - anti-N-methyl-D-aspartate OT - anti-tumor necrosis factor-alpha OT - autoimmune encephalitis OT - infliximab COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/11/18 06:00 MHDA- 2022/11/22 06:00 PMCR- 2022/01/01 CRDT- 2022/11/17 12:43 PHST- 2022/05/31 00:00 [received] PHST- 2022/10/19 00:00 [accepted] PHST- 2022/11/17 12:43 [entrez] PHST- 2022/11/18 06:00 [pubmed] PHST- 2022/11/22 06:00 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2022.957575 [doi] PST - epublish SO - Front Immunol. 2022 Oct 31;13:957575. doi: 10.3389/fimmu.2022.957575. eCollection 2022.