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Case report
Antibody-negative autoimmune encephalitis as a complication of long-term immune-suppression for liver transplantation
  1. Jeffrey Spindel1,
  2. Matthew Heckroth1 and
  3. Luis Marsano2
  1. 1Internal Medicine, University of Louisville, Louisville, Kentucky, USA
  2. 2Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, Kentucky, USA
  1. Correspondence to Dr Jeffrey Spindel; jeffrey.spindel{at}louisville.edu

Abstract

Autoimmune encephalitis is a rare spectrum of disease that can be a complication of chronic immunosuppression. Diagnosis often requires the presence of antineuronal antibodies, but many causative antibodies have not yet been identified. Antibody-negative autoimmune encephalitis (AbNAE) is especially difficult to diagnose and must rely largely on exclusion of other causes. In chronically immune-suppressed transplant recipients, the differential is broad, likely resulting in underdiagnosis and worse outcomes. Here, we present a 58-year-old liver transplant recipient taking tacrolimus for prevention of chronic rejection who presented with 5 days of confusion, lethargy and lightheadedness. He was diagnosed with AbNAE after an extensive workup and recovered fully after high-dose corticosteroids. Our case highlights the importance of recognising the association between chronic immunosuppression and autoimmune encephalitis. Autoimmune encephalitis, even in the absence of characterised antibodies, should be considered when transplant recipients present with central neurologic symptoms.

  • immunology
  • neurooncology
  • unwanted effects / adverse reactions
  • gastroenterology
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Footnotes

  • Contributors JS began the project and wrote the hospital course, discussion, data figures and contributed to the differential diagnoses and explanations. MH wrote the summary, treatment, teaching points and contributed to the differential diagnoses section. JS and LM edited and revised the manuscript. LM was the attending physician for this patient and oversaw all work on the project.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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