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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 JAMA+Neurol
2014 ; 71
(5
): 620-3
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gab.com Text
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English Wikipedia
Aggressive course in encephalitis with opsoclonus, ataxia, chorea, and seizures:
the first pediatric case of ?-aminobutyric acid type B receptor autoimmunity
#MMPMID24590315
Kruer MC
; Hoeftberger R
; Lim KY
; Coryell JC
; Svoboda MD
; Woltjer RL
; Dalmau J
JAMA Neurol
2014[May]; 71
(5
): 620-3
PMID24590315
show ga
IMPORTANCE: Autoantibodies to the ?-aminobutyric acid type B (GABAB) receptor
have recently been identified as a cause of autoimmune encephalitis. Most
patients with GABAB encephalitis have presented with limbic encephalitis. About
half of the cases reported have been paraneoplastic in origin, with the majority
of tumors representing small cell lung cancer. OBSERVATIONS: We describe a
3-year-old boy who presented with a mixed movement disorder (opsoclonus, ataxia,
and chorea) as well as seizures refractory to treatment. His seizures required
continuous pentobarbital sodium infusion to be controlled. Despite treatment with
intravenous corticosteroids and immunoglobulins, the patient ultimately died of
overwhelming sepsis. CONCLUSIONS AND RELEVANCE: To our knowledge, this report
represents the first pediatric case of GABAB-associated encephalitis. Our patient
presented with encephalopathy, refractory seizures, and a mixed movement disorder
rather than limbic encephalitis. ?-Aminobutyric acid type B receptor autoimmunity
deserves consideration in pediatric patients presenting with encephalitis.
Immune-mediated encephalitis with autoantibodies directed against synaptic
proteins has become an important component of the differential diagnosis of
patients with encephalitis. Current estimates suggest that a substantial
proportion of patients once suspected to have viral encephalitis in fact have an
autoimmune etiology for their symptoms.1 Additional autoantigen targets continue
to be identified, and the phenotypic spectrum associated with autoimmune
encephalitis continues to expand. We describe a 3-year-old patient who presented
with acute-onset confusion, opsoclonus, chorea, and intractable seizures.
Neuroimaging disclosed involvement of the brainstem, basal ganglia, and
hippocampi. ?-Aminobutyric acid type B (GABAB) receptor autoantibodies were
identified in the serum and cerebrospinal fluid (CSF). Despite immunomodulating
therapy, the patient died of overwhelming sepsis. To our knowledge, this is the
first description of a pediatric patient with GABAB receptor autoantibodies. The
presence of opsoclonus, ataxia, and chorea expands the clinical phenotype and
indicates that GABAB receptor autoimmunity should be considered in cases of
pediatric encephalitis