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Updated: Jun 26, 2025

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate NMDA Receptor in Blood
Published on: January 9, 2018
Anti-N-Methyl-D Receptor Encephalitis During Long-Term Adalimumab Therapy for Crohn's Disease
Scott MacKay1, Baljinder Salh2
1Division of General Internal Medicine, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.
Abstract:
A 46-year-old woman with fistulizing Crohn's disease in clinical remission in the setting of long-term adalimumab therapy presented to hospital and was ultimately diagnosed with anti-N-methyl-D (NMDA) receptor antibody-mediated autoimmune encephalitis (NMDAr-AE). Inflammatory central nervous system and antibody-mediated adverse effects have been found to be associated with anti-tumor necrosis factor agents, with 5 previous case reports noting cases of NMDAr-AE in patients on these medications. The current article reports this case, which is unique for the length of adalimumab therapy before this presentation, as well as a summary of literature regarding anti-tumor necrosis factors and NMDAr-AE.
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