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Autoimmune encephalitis with anti-IgLON5 and anti-GABAB-receptor antibodies: A case report.


ABSTRACT:

Rationale

Anti-IgLON5 disease is a complex neurological illness which is characterized by progressive sleep and movement disorders and defined by specific autoantibodies to IgLON5. We here describe the first case of a patient with coexisting anti-IgLON5 as well as anti-?-aminobutyric acid B (GABAB)-receptor antibodies and predominant clinical features of anti-IgLON5 disease.

Patient concerns

The patient initially presented with subacute symptoms of severe sleep disorder, gait stability, dysarthria, cognitive impairment, depressive episode and hallucinations.

Diagnoses

The patient was diagnosed with autoimmune encephalitis, based on clinical features and positive anti-IgLON5 antibodies in serum as well as in cerebrospinal fluid and anti-GABAB-receptor antibodies in serum only.

Interventions

Initially, the patient was treated with high dosages of methylprednisolone and subsequently with plasmapheresis. Due to the lack of clinical improvement immunosuppressive treatment with intravenous cyclophosphamide was initiated.

Outcomes

Following the first year of cyclophosphamide treatment, neurological examination revealed an improvement in gait instability, visual and acoustic hallucinations and sleep disorder.

Lessons

The case report demonstrates that anti-IgLON5 and anti-GABAB-receptor antibodies can coexist in the same patient whereas clinical leading symptoms are determined by those antibodies that were tested positive in cerebrospinal fluid.

SUBMITTER: Chung HY 

PROVIDER: S-EPMC6531245 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Publications

Autoimmune encephalitis with anti-IgLON5 and anti-GABAB-receptor antibodies: A case report.

Chung Ha-Yeun HY   Wickel Jonathan J   Voss Annika A   Ceanga Mihai M   Sell Josefine J   Witte Otto W OW   Geis Christian C  

Medicine 20190501 20


<h4>Rationale</h4>Anti-IgLON5 disease is a complex neurological illness which is characterized by progressive sleep and movement disorders and defined by specific autoantibodies to IgLON5. We here describe the first case of a patient with coexisting anti-IgLON5 as well as anti-γ-aminobutyric acid B (GABAB)-receptor antibodies and predominant clinical features of anti-IgLON5 disease.<h4>Patient concerns</h4>The patient initially presented with subacute symptoms of severe sleep disorder, gait stab  ...[more]

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