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Atypical presentation of probable Creutzfeldt-Jakob disease associated with anti-Zic4 antibody: Literature review of neuronal antibodies in Creutzfeldt-Jakob disease.
Clinical Neurology and Neurosurgery 2018 May
INTRODUCTION: Sporadic Creutzfeldt-Jakob disease is a prion disease characterized by rapidly progressive dementia, ataxia and myoclonus. Atypical phenotype masquerading as stroke, movement disorders or autoimmune encephalitis have been described. Here, I report a probable case of sCJD with an atypical presentation associated with anti-Zic4 antibody and review the literature of neuronal antibodies in CJD.
CASE REPORT: A 70 year-old gentleman is admitted with a 2-month history of recurrent stroke-like symptoms associated with behavioral disturbances, gait ataxia and rapidly progressive dementia. His initial examination demonstrated akinetic mutism, diffuse rigidity, dysautononia, and Cheyne-Stokes respiration. Over the following weeks his condition progressed to profound coma. A comprehensive infectious, metabolic, inflammatory and autoimmune work-up yielded negative results. Empiric immunosuppressive therapy ensued. He expired three months after symptoms onset. Autopsy was not performed. After his demise, prion tests came back abnormal for elevated 14-3-3 protein, total tau and positive RTQuIC. Later on, anti-Zic4 antibodies were found in serum.
CONCLUSION: This case underscores the importance of a high index of suspicion for CJD even in case of atypical features or the concurrence of neuronal antibodies. Further larger prospective studies on the prevalence of these neuronal antibodies in CJD and the contribution of these autoantibodies to disease pathophysiology are necessary.
CASE REPORT: A 70 year-old gentleman is admitted with a 2-month history of recurrent stroke-like symptoms associated with behavioral disturbances, gait ataxia and rapidly progressive dementia. His initial examination demonstrated akinetic mutism, diffuse rigidity, dysautononia, and Cheyne-Stokes respiration. Over the following weeks his condition progressed to profound coma. A comprehensive infectious, metabolic, inflammatory and autoimmune work-up yielded negative results. Empiric immunosuppressive therapy ensued. He expired three months after symptoms onset. Autopsy was not performed. After his demise, prion tests came back abnormal for elevated 14-3-3 protein, total tau and positive RTQuIC. Later on, anti-Zic4 antibodies were found in serum.
CONCLUSION: This case underscores the importance of a high index of suspicion for CJD even in case of atypical features or the concurrence of neuronal antibodies. Further larger prospective studies on the prevalence of these neuronal antibodies in CJD and the contribution of these autoantibodies to disease pathophysiology are necessary.
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