Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case report

Abstract Background Anti-dipeptidyl-peptidase-like protein 6 (DPPX) encephalitis is a rare autoimmune encephalitis. The clinical symptoms of anti-DPPX encephalitis are often severe, manifested as diarrhea/weight loss, central nervous system hyperexcitability and cognitive dysfunction. Case presentat...

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Main Authors: Jing Lin, Min Zhu, Xiaocheng Mao, Zeqing Jin, Meihong Zhou, Daojun Hong
Format: Article
Language:English
Published: BMC 2022-07-01
Series:BMC Neurology
Subjects:
Online Access:https://doi.org/10.1186/s12883-022-02769-0
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author Jing Lin
Min Zhu
Xiaocheng Mao
Zeqing Jin
Meihong Zhou
Daojun Hong
author_facet Jing Lin
Min Zhu
Xiaocheng Mao
Zeqing Jin
Meihong Zhou
Daojun Hong
author_sort Jing Lin
collection DOAJ
description Abstract Background Anti-dipeptidyl-peptidase-like protein 6 (DPPX) encephalitis is a rare autoimmune encephalitis. The clinical symptoms of anti-DPPX encephalitis are often severe, manifested as diarrhea/weight loss, central nervous system hyperexcitability and cognitive dysfunction. Case presentation An 18-year-old boy was admitted for 1-week-long cerebellar symptoms including dizziness, unsteady gait and frequent vomiting. Magnetic resonance imaging (MRI) displayed no abnormal findings. However, autoimmune encephalitis panel revealed anti-DPPX antibody was positive in the serum. This patient completely recovered after immunoglobulin and corticoids therapy. In addition, repeat serum antibody test for DPPX was negative within one month. Conclusion In addition to the classic triad, anti-DPPX encephalitis may manifest as mild and rare symptoms due to lower antibody titers. Fast identification of rare symptoms can help to quickly diagnosis and effective treatment.
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spelling doaj.art-3275cb413047422887a3b26936e96e8f2022-12-22T02:41:23ZengBMCBMC Neurology1471-23772022-07-012211510.1186/s12883-022-02769-0Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case reportJing Lin0Min Zhu1Xiaocheng Mao2Zeqing Jin3Meihong Zhou4Daojun Hong5Department of Neurology, Dong’hu District, The First Affiliated Hospital of Nanchang UniversityDepartment of Neurology, Dong’hu District, The First Affiliated Hospital of Nanchang UniversityDepartment of Neurology, Dong’hu District, The First Affiliated Hospital of Nanchang UniversityDepartment of Neurology, Dong’hu District, The First Affiliated Hospital of Nanchang UniversityDepartment of Neurology, Dong’hu District, The First Affiliated Hospital of Nanchang UniversityDepartment of Neurology, Dong’hu District, The First Affiliated Hospital of Nanchang UniversityAbstract Background Anti-dipeptidyl-peptidase-like protein 6 (DPPX) encephalitis is a rare autoimmune encephalitis. The clinical symptoms of anti-DPPX encephalitis are often severe, manifested as diarrhea/weight loss, central nervous system hyperexcitability and cognitive dysfunction. Case presentation An 18-year-old boy was admitted for 1-week-long cerebellar symptoms including dizziness, unsteady gait and frequent vomiting. Magnetic resonance imaging (MRI) displayed no abnormal findings. However, autoimmune encephalitis panel revealed anti-DPPX antibody was positive in the serum. This patient completely recovered after immunoglobulin and corticoids therapy. In addition, repeat serum antibody test for DPPX was negative within one month. Conclusion In addition to the classic triad, anti-DPPX encephalitis may manifest as mild and rare symptoms due to lower antibody titers. Fast identification of rare symptoms can help to quickly diagnosis and effective treatment.https://doi.org/10.1186/s12883-022-02769-0Autoimmune encephalitisDipeptidyl-peptidase-like protein 6Cerebellar ataxiaAntibodyCase report
spellingShingle Jing Lin
Min Zhu
Xiaocheng Mao
Zeqing Jin
Meihong Zhou
Daojun Hong
Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case report
BMC Neurology
Autoimmune encephalitis
Dipeptidyl-peptidase-like protein 6
Cerebellar ataxia
Antibody
Case report
title Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case report
title_full Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case report
title_fullStr Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case report
title_full_unstemmed Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case report
title_short Anti-dipeptidyl-peptidase-like protein 6 encephalitis with pure cerebellar ataxia: a case report
title_sort anti dipeptidyl peptidase like protein 6 encephalitis with pure cerebellar ataxia a case report
topic Autoimmune encephalitis
Dipeptidyl-peptidase-like protein 6
Cerebellar ataxia
Antibody
Case report
url https://doi.org/10.1186/s12883-022-02769-0
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