Autoimmune encephalitis

Summary

Autoimmune encephalitis (AIE) is a type of encephalitis, and one of the most common causes of noninfectious encephalitis. It can be triggered by tumors, infections, or it may be cryptogenic. The neurological manifestations can be either acute or subacute and usually develop within six weeks. The clinical manifestations include behavioral and psychiatric symptoms, autonomic disturbances, movement disorders, and seizures.[1]

Autoimmune encephalitis
Brain CT scan without contrast enhancement of a patient, female, 8 years old, with Rasmussen's encephalitis.

Autoimmune encephalitis can result from a number of autoimmune diseases including:

The severity of the condition can be monitored using the Modified Rankin Scale and the clinical assessment scale in autoimmune encephalitis (CASE) score.[3][4]

Signs and symptoms edit

Patients with AIE may present movement disorders such as ataxia, dystonia, myoclonus, and orofacial dyskinesia. Seizures are the most common symptom and different types of seizures may be seen, including refractory status epilepticus.[5] Autonomic disturbances such as sweating, hypertension, tachycardia and hypoventilation are also frequent. Some patients may develop gastrointestinal manifestations (diarrhea, gastroparesis, and constipation) due to involvement of the myenteric plexus. Sleep disturbances such as insomnia, abnormal sleep movements, sleep apnea, and hypersomnia are also found.[6][1]

Some of these findings are suggestive of certain types of encephalitis and may indicate a specific underlying antibody or tumor.[1]

Mechanism edit

Autoimmune encephalitis commonly presents an immune response against neuronal autoantigens with production of antibodies.[7] Anti-neuronal antibodies are classified into antibodies against cell surface antigens (CSAab), antibodies against synaptic antigens (SyAab) and antibodies against intraneuronal antigens (INAab), also known as onconeural antibodies.[7][1]

Diagnosis edit

Diagnostic criteria for possible autoimmune encephalitis (all three of the following criteria met):[1]

  1. Subacute onset (rapid progression of less than three months) of working memory deficits (short-term memory loss), altered mental status (decreased level of consciousness, lethargy or personality changes), or psychiatric symptoms
  2. At least one of the following:
  3. Reasonable exclusion of alternative causes

Criteria for autoantibody-negative but probable autoimmune encephalitis (all four criteria met):

  1. Subacute onset (rapid progression of less than three months) of working memory deficits (short-term memory loss), altered mental status (decreased level of consciousness, lethargy or personality changes), or psychiatric symptoms
  2. Exclusion of well-defined syndromes of autoimmune encephalitis (typical limbic encephalitis, Bickerstaff brainstem encephalitis, acute disseminated encephalomyelitis)
  3. Absence of well-characterized autoantibodies in blood serum and cerebrospinal fluid, and at least two of the following criteria:
  4. Reasonable exclusion of alternative causes

Classification edit

Anti-NMDAR encephalitis edit

Anti-N-methyl-D-aspartate receptor encephalitis is one of the most common causes of AIE and was originally described in 2007 in a cohort of 12 patients, 11 of them with ovarian teratomas.[8] This condition predominantly affects children and young female patients.[9] Underlying malignancies are found mainly in patients between the age of 12–45 years; most of them are ovarian teratomas (94%), followed by extraovarian teratomas (2%), and other tumors (4%). Herpes simplex virus-1 encephalitis appears to be a trigger for anti-NMDAR encephalitis; most AIE cases after herpes zoster are now believed to be anti-NMDAR encephalitis.[10][1]

Anti-AMPAR encephalitis edit

Patients with anti-Α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (anti-AMPAR) encephalitis characteristically present with seizures, memory impairment and psychosis. Some may develop sleep disturbances and movement disorders. Anti-AMPAR encephalitis is paraneoplastic in etiology in 64% of cases, mostly associated with thymoma, ovarian teratoma and lung and breast cancer. Brain MRI shows T2 and FLAIR hyperintensities, particularly in the medial temporal lobe. Lesions in the brain cortex or subcortex, sometimes with demyelination, may also be found. Cerebrospinal fluid (CSF) examination may show pleocytosis and oligoclonal bands.[11][1]

Anti-GABA encephalitis edit

Anti-GABA-AR encephalitis edit

Anti-gamma-aminobutyric acid A receptor (anti-GABA-AR) encephalitis was first reported in 2014 in six patients (two male children, one female teenager and three male adults). They developed a rapidly progressive encephalopathy with early behavioral or cognitive changes that evolved with refractory seizures and multifocal lesions as seen on brain magnetic resonance imaging.[12] In most of these patients, CSF analysis showed lymphocytic pleocytosis. A recent study identified an underlying neoplasia in 27% of these patients, mostly thymomas.[13] Similar to that seen in patients with anti-gamma-aminobutyric acid B receptor (GABA-BR) and anti-AMPAR antibodies, they may also present with coexisting autoimmune disorders such as thyroiditis or myasthenia.[14][1]

Anti-GABA-BR encephalitis edit

Anti-GABA-BR encephalitis is characterized by cognitive symptoms with severe seizures or status epilepticus.[15] Other presentations include ataxia and opsoclonus-myoclonus. In a small series of 20 patients with anti-GABA-BR, about 50% were found to have small-cell lung cancer.[16] Males and females appear to be equally affected. The long-term prognosis in anti-GABA-BR encephalitis is determined by the presence of an underlying malignancy.[17][1]

Anti-LGI1 and anti-CASPR2 encephalitis edit

The first reports of anti-voltage-gated potassium channel-complex antibodies (anti-VGKC) date back to 2001 and described patients with neuromyotonia, Morvan's syndrome and limbic encephalitis.[18] Other rare phenotypes included epilepsy and painful polyneuropathy. Anti-VGKC antibodies, in fact, later turned out to be directed against proteins that form a complex with VGKC called leucine-rich glioma-inactivated 1 (LGI1 and contactin-associated protein-like 2 (CASPR-2).[19][20] Each of these antibodies lead to specific clinical symptoms.[1]

Anti-GAD encephalitis edit

Glutamic acid decarboxylase (GAD) is an enzyme that catalyzes the conversion of glutamic acid to the neurotransmitter GABA. Anti-GAD antibodies have been associated with other autoimmune disorders such as insulin-dependent diabetes mellitus. The main neurological syndromes associated with anti-GAD antibodies include stiff-person syndrome, cerebellar ataxia, epilepsy and limbic encephalitis.[21][1]

Anti-GlyR encephalitis edit

Glycine receptors (GlyR) are chloride channels that facilitate inhibitory neurotransmission in the brain and spinal cord. Anti-GlyR antibodies were first described in patients with progressive encephalomyelitis with rigidity and myoclonus and later in patients with stiff-person syndrome.[22][23] Recently, anti-GlyR antibodies have also been reported in patients with cerebellar ataxia and anti-GAD antibodies and patients with demyelinating diseases including optic neuritis and multiple sclerosis, but their clinical significance remains unclear.[24][25] Anti-GlyR antibodies are usually not associated with tumors, although there have been reports of patients with underlying thymoma, small-cell lung cancer, breast cancer and chronic lymphocytic leukemia.[1]

Anti-DPPX encephalitis edit

Dipeptidyl peptidase-like protein 6 (DPPX) is a subunit of Kv4.2 potassium channels expressed in the hippocampus, cerebellum, striatum, and myenteric plexus. Patients with anti-DPPX antibodies show neuropsychiatric symptoms (agitation and confusion), myoclonus, tremor, startle reflex, seizures, stiff-person syndrome and prodromal diarrhea of unknown etiology. In addition, they may have symptoms of dysautonomia including arrhythmias, thermodysregulation, diaphoresis, urinary symptoms and sleep disorders.[26][27][1]

Encephalopathy associated with anti-IgLON5 antibodies edit

The IgLON family member 5 (IgLON5) is a neuronal cell adhesion molecule of the immunoglobulin superfamily. Patients with anti-IgLON5 antibodies present with a unique non-REM (rapid eye movement) and REM parasomnia with obstructive sleep apnea, stridor, episodic central hypoventilation, dementia, gait instability, chorea, dysarthria, dysphagia, dysautonomia and supranuclear gaze palsy resembling that seen in classic tauopathy.[28][27] All published cases reported the presence of the alleles HLA-DQB1*0501 and HLA-DRB1*1001 suggesting genetic susceptibility to this disease. Neuropathological postmortem studies have shown a novel tauopathy with extensive neuronal deposits of hyperphosphorylated tau mainly involving the tegmentum of the brainstem and hypothalamus. This novel encephalopathy provides an intriguing link between neurodegeneration and cell-surface autoimmunity. A recent study has shown that anti-IgLON5 antibodies recognize Ig-like domain 2 as an immunogenic region and causes irreversible internalization of IgLON5 from the neuronal membrane. These findings support a potential pathogenic role of anti-IgLON5 antibodies in the associated encephalopathy.[29][1]

Anti-mGluR1 and anti-mGluR5 encephalitis edit

Metabotropic glutamate receptor 1 (mGluR1) and metabotropic glutamate receptor 5 (mGluR5) are both G-protein-coupled receptors that share an 85% amino acid sequence homology. Both receptors are involved in modulating synaptic functions including the electrical change in neuronal response called long-term depression (a term not related to the mood-changing disorder major depression). While mGluR1 facilitates long-term depression at parallel fiber to Purkinje cell synapses, which are critical for cerebellar motor learning, mGluR5 is more relevant for long-term depression in the hippocampus.[1]

All patients with anti-mGluR1 antibodies develop cerebellar ataxia of subacute onset, and some may present with additional symptoms such as paranoia, dysgeusia, diplopia and cognitive deficits. Common tumors found to be associated with anti-mGluR1 antibodies are hematologic malignancies and prostate adenocarcinoma.[30][1]

Patients with anti-mGluR5-abs present with a form of encephalitis named "Ophelia syndrome", a clinical syndrome that includes memory loss and psychosis in association with Hodgkin's lymphoma.[31] The outcome of reported cases is generally good after treatment of the lymphoma and immunotherapy.[31][1]

Seronegative autoimmune encephalitis edit

Autoimmune encephalitis might occur without the identification of any pathogenic antibody, in which case it is called seronegative autoimmune encephalitis.[4]

It can be further categorized in three subtypes: antibody-negative probable autoimmune encephalitis, autoimmune limbic encephalitis and acute disseminated encephalomyelitis.[4]

One therapeutic approach to seronegative autoimmune encephalitis is using as a first-line treatment corticosteroids and intravenous immunoglobulin.[4]Other options include the use of rituximab (second-line) and tocilizumab or cyclophosphamide (next-line).[4]

A study in a south-korean hospital with 142 patients identified 5 factors that should be considered when evaluating the disease:[4]

The less of those factors are present, the better the chance of good recovery in a 2-year period.[4]

See also edit

References edit

  1. ^ a b c d e f g h i j k l m n o p q Dutra, Lívia Almeida; Abrantes, Fabiano; Toso, Fabio Fieni; Pedroso, José Luiz; Barsottini, Orlando Graziani Povoas; Hoftberger, Romana (January 2018). "Autoimmune encephalitis: a review of diagnosis and treatment". Arquivos de Neuro-Psiquiatria. 76 (1): 41–49. doi:10.1590/0004-282X20170176. ISSN 0004-282X. PMID 29364393.   This article incorporates text available under the CC BY 4.0 license.
  2. ^ Bhalla, D.; Godet, B.; Druet-Cabanac, M.; Preux, PM. (June 2011). "Etiologies of epilepsy: a comprehensive review". Expert Rev Neurother. 11 (6): 861–76. doi:10.1586/ern.11.51. PMID 21651333. S2CID 21190601.
  3. ^ Lim, Jung-Ah; Lee, Soon-Tae; Moon, Jangsup; Jun, Jin-Sun; Kim, Tae-Joon; Shin, Yong-Won; Abdullah, Suhailah; Byun, Jung Ick; Sunwoo, Jun-Sang; Kim, Keun Tae; Yang, Tae-Won; Lee, Woo-Jin; Moon, Hye Jin; Kim, Dong Wook; Lim, Byung Chan (10 February 2019). "Development of the clinical assessment scale in autoimmune encephalitis". Annals of Neurology. 85 (3): 352–358. doi:10.1002/ANA.25421. PMID 30675918. S2CID 59225372.
  4. ^ a b c d e f g Woo-Jin Lee; Han-Sang Lee; Do-Yong Kim; et al. (5 May 2022). "Seronegative autoimmune encephalitis: clinical characteristics and factors associated with outcomes". Brain. 145 (10): 3509–3521. doi:10.1093/BRAIN/AWAC166. ISSN 0006-8950. Wikidata Q115688145.
  5. ^ Davis, Rebecca; Dalmau, Josep (September 2013). "Autoimmunity, seizures, and status epilepticus". Epilepsia. 54 (6): 46–49. doi:10.1111/epi.12276. PMC 3767193. PMID 24001072.
  6. ^ Tobin, William Oliver; Lennon, Vanda A.; Komorowski, Lars; Probst, Christian; Clardy, Stacey Lynn; Aksamit, Allen J.; Appendino, Juan Pablo; Lucchinetti, Claudia F.; Matsumoto, Joseph Y.; Pittock, Sean J.; Sandroni, Paola; Tippmann-Peikert, Maja; Wirrell, Elaine C.; McKeon, Andrew (11 November 2014). "DPPX potassium channel antibody: Frequency, clinical accompaniments, and outcomes in 20 patients". Neurology. 83 (20): 1797–1803. doi:10.1212/WNL.0000000000000991. ISSN 0028-3878. PMC 4240433. PMID 25320100.
  7. ^ a b Lancaster, Eric; Dalmau, Josep (July 2012). "Neuronal autoantigens—pathogenesis, associated disorders and antibody testing". Nature Reviews Neurology. 8 (7): 380–390. doi:10.1038/nrneurol.2012.99. ISSN 1759-4766. PMC 3718498. PMID 22710628.
  8. ^ Dalmau, Josep; Tüzün, Erdem; Wu, Hai-yan; Masjuan, Jaime; Rossi, Jeffrey E.; Voloschin, Alfredo; Baehring, Joachim M.; Shimazaki, Haruo; Koide, Reiji; King, Dale; Mason, Warren; Sansing, Lauren H.; Dichter, Marc A.; Rosenfeld, Myrna R.; Lynch, David R. (January 2007). "Paraneoplastic anti- N -methyl-D-aspartate receptor encephalitis associated with ovarian teratoma". Annals of Neurology. 61 (1): 25–36. doi:10.1002/ana.21050. PMC 2430743. PMID 17262855.
  9. ^ Graus, Francesc; Titulaer, Maarten J.; Balu, Ramani; Benseler, Susanne; Bien, Christian G.; Cellucci, Tania; Cortese, Irene; Dale, Russell C.; Gelfand, Jeffrey M.; Geschwind, Michael; Glaser, Carol A.; Honnorat, Jerome; Höftberger, Romana; Iizuka, Takahiro; Irani, Sarosh R. (1 April 2016). "A clinical approach to diagnosis of autoimmune encephalitis". The Lancet Neurology. 15 (4): 391–404. doi:10.1016/S1474-4422(15)00401-9. ISSN 1474-4422. PMC 5066574. PMID 26906964.
  10. ^ Graus, Francesc; Titulaer, Maarten J; Balu, Ramani; Benseler, Susanne; Bien, Christian G; Cellucci, Tania; Cortese, Irene; Dale, Russell C; Gelfand, Jeffrey M; Geschwind, Michael; Glaser, Carol A; Honnorat, Jerome; Höftberger, Romana; Iizuka, Takahiro; Irani, Sarosh R (April 2016). "A clinical approach to diagnosis of autoimmune encephalitis". The Lancet Neurology. 15 (4): 391–404. doi:10.1016/S1474-4422(15)00401-9. PMC 5066574. PMID 26906964.
  11. ^ Höftberger, Romana; Sonderen, Agnes van; Leypoldt, Frank; Houghton, David; Geschwind, Michael; Gelfand, Jeffrey; Paredes, Mercedes; Sabater, Lidia; Saiz, Albert; Titulaer, Maarten J.; Graus, Francesc; Dalmau, Josep (16 June 2015). "Encephalitis and AMPA receptor antibodies: Novel findings in a case series of 22 patients". Neurology. 84 (24): 2403–2412. doi:10.1212/WNL.0000000000001682. ISSN 0028-3878. PMC 4478035. PMID 25979696.
  12. ^ Petit-Pedrol, Mar; Armangue, Thaís; Peng, Xiaoyu; Bataller, Luis; Cellucci, Tania; Davis, Rebecca; McCracken, Lindsey; Martinez-Hernandez, Eugenia; Mason, Warren P.; Kruer, Michael C.; Ritacco, David G.; Grisold, Wolfgang; Meaney, Brandon F.; Alcalá, Carmen; Sillevis-Smitt, Peter (1 March 2014). "Encephalitis with refractory seizures, status epilepticus, and antibodies to the GABAA receptor: a case series, characterisation of the antigen, and analysis of the effects of antibodies". The Lancet Neurology. 13 (3): 276–286. doi:10.1016/S1474-4422(13)70299-0. ISSN 1474-4422. PMC 4838043. PMID 24462240.
  13. ^ Spatola, Marianna; Petit-Pedrol, Mar; Simabukuro, Mateus Mistieri; Armangue, Thaís; Castro, Fernanda J.; Artigues, Maria I. Barcelo; Benique, Maria R. Julià; Benson, Leslie; Gorman, Mark; Felipe, Ana; Oblitas, Ruben L. Caparó; Rosenfeld, Myrna R.; Graus, Francesc; Dalmau, Josep (14 March 2017). "Investigations in GABAA receptor antibody-associated encephalitis". Neurology. 88 (11): 1012–1020. doi:10.1212/WNL.0000000000003713. ISSN 0028-3878. PMC 5384834. PMID 28202703.
  14. ^ Ohkawa, Toshika; Satake, Shin'Ichiro; Yokoi, Norihiko; Miyazaki, Yu; Ohshita, Tomohiko; Sobue, Gen; Takashima, Hiroshi; Watanabe, Osamu; Fukata, Yuko; Fukata, Masaki (11 June 2014). "Identification and Characterization of GABAA Receptor Autoantibodies in Autoimmune Encephalitis". Journal of Neuroscience. 34 (24): 8151–8163. doi:10.1523/JNEUROSCI.4415-13.2014. ISSN 0270-6474. PMC 6608235. PMID 24920620.
  15. ^ Lancaster, Eric; Lai, Meizan; Peng, Xiaoyu; Hughes, Ethan; Constantinescu, Radu; Raizer, Jeffrey; Friedman, Daniel; Skeen, Mark B.; Grisold, Wolfgang; Kimura, Akio; Ohta, Kouichi; Iizuka, Takahiro; Guzman, Miguel; Graus, Francesc; Moss, Stephen J. (1 January 2010). "Antibodies to the GABAB receptor in limbic encephalitis with seizures: case series and characterisation of the antigen". The Lancet Neurology. 9 (1): 67–76. doi:10.1016/S1474-4422(09)70324-2. ISSN 1474-4422. PMC 2824142. PMID 19962348.
  16. ^ Höftberger, Romana; Titulaer, Maarten J.; Sabater, Lidia; Dome, Balazs; Rózsás, Anita; Hegedus, Balazs; Hoda, Mir Alireza; Laszlo, Viktoria; Ankersmit, Hendrik Jan; Harms, Lutz; Boyero, Sabas; Felipe, Alicia de; Saiz, Albert; Dalmau, Josep; Graus, Francesc (22 October 2013). "Encephalitis and GABAB receptor antibodies: Novel findings in a new case series of 20 patients". Neurology. 81 (17): 1500–1506. doi:10.1212/WNL.0b013e3182a9585f. ISSN 0028-3878. PMC 3888170. PMID 24068784.
  17. ^ Lancaster, Eric; Martinez-Hernandez, Eugenia; Dalmau, Josep (12 July 2011). "Encephalitis and antibodies to synaptic and neuronal cell surface proteins". Neurology. 77 (2): 179–189. doi:10.1212/WNL.0b013e318224afde. ISSN 0028-3878. PMC 3140073. PMID 21747075.
  18. ^ Sonderen, Agnes van; Schreurs, Marco W. J.; Bruijn, Marienke A. A. M. de; Boukhrissi, Sanae; Nagtzaam, Mariska M. P.; Hulsenboom, Esther S. P.; Enting, Roelien H.; Thijs, Roland D.; Wirtz, Paul W.; Smitt, Peter A. E. Sillevis; Titulaer, Maarten J. (3 May 2016). "The relevance of VGKC positivity in the absence of LGI1 and Caspr2 antibodies". Neurology. 86 (18): 1692–1699. doi:10.1212/WNL.0000000000002637. ISSN 0028-3878. PMID 27037230. S2CID 21394379.
  19. ^ Irani, Sarosh R.; Pettingill, Philippa; Kleopa, Kleopas A.; Schiza, Natasa; Waters, Patrick; Mazia, Claudio; Zuliani, Luigi; Watanabe, Osamu; Lang, Bethan; Buckley, Camilla; Vincent, Angela (August 2012). "Morvan syndrome: Clinical and serological observations in 29 cases". Annals of Neurology. 72 (2): 241–255. doi:10.1002/ana.23577. PMID 22473710. S2CID 1024358.
  20. ^ van Sonderen, A.; Schreurs, M. W. J.; Wirtz, P. W.; Sillevis Smitt, P. A. E.; Titulaer, M. J. (1 October 2016). "From VGKC to LGI1 and Caspr2 encephalitis: The evolution of a disease entity over time". Autoimmunity Reviews. 15 (10): 970–974. doi:10.1016/j.autrev.2016.07.018. hdl:1765/96123. ISSN 1568-9972. PMID 27485013.
  21. ^ Vale, Thiago Cardoso; Pedroso, José Luiz; Alquéres, Rafaela Almeida; Dutra, Lívia Almeida; Barsottini, Orlando Graziani Povoas (15 December 2015). "Spontaneous downbeat nystagmus as a clue for the diagnosis of ataxia associated with anti-GAD antibodies". Journal of the Neurological Sciences. 359 (1): 21–23. doi:10.1016/j.jns.2015.10.024. ISSN 0022-510X. PMID 26671081. S2CID 26390870.
  22. ^ Alexopoulos, Harry; Akrivou, Sofia; Dalakas, Marinos C. (26 November 2013). "Glycine receptor antibodies in stiff-person syndrome and other GAD-positive CNS disorders". Neurology. 81 (22): 1962–1964. doi:10.1212/01.wnl.0000436617.40779.65. ISSN 0028-3878. PMID 24174585. S2CID 20985893.
  23. ^ McKeon, Andrew; Martinez-Hernandez, Eugenia; Lancaster, Eric; Matsumoto, Joseph Y.; Harvey, Robert J.; McEvoy, Kathleen M.; Pittock, Sean J.; Lennon, Vanda A.; Dalmau, Josep (January 2013). "Glycine Receptor Autoimmune Spectrum With Stiff-Man Syndrome Phenotype". JAMA Neurology. 70 (1): 44–50. doi:10.1001/jamaneurol.2013.574. PMC 3718477. PMID 23090334. Retrieved 9 December 2022.
  24. ^ Ariño, Helena; Gresa-Arribas, Nuria; Blanco, Yolanda; Martínez-Hernández, Eugenia; Sabater, Lidia; Petit-Pedrol, Mar; Rouco, Idoia; Bataller, Luis; Dalmau, Josep O.; Saiz, Albert; Graus, Francesc (August 2014). "Cerebellar Ataxia and Glutamic Acid Decarboxylase Antibodies". JAMA Neurology. 71 (8): 1009–1016. doi:10.1001/jamaneurol.2014.1011. PMC 4841264. PMID 24934144. Retrieved 9 December 2022.
  25. ^ Martinez-Hernandez, Eugenia; Sepulveda, Maria; Rostásy, Kevin; Höftberger, Romana; Graus, Francesc; Harvey, Robert J.; Saiz, Albert; Dalmau, Josep (February 2015). "Antibodies to Aquaporin 4, Myelin-Oligodendrocyte Glycoprotein, and the Glycine Receptor α1 Subunit in Patients With Isolated Optic Neuritis". JAMA Neurology. 72 (2): 187–193. doi:10.1001/jamaneurol.2014.3602. PMC 4836943. PMID 25506781. Retrieved 9 December 2022.
  26. ^ Piepgras, Johannes; Höltje, Markus; Michel, Klaus; Li, Qin; Otto, Carolin; Drenckhahn, Christoph; Probst, Christian; Schemann, Michael; Jarius, Sven; Stöcker, Winfried; Balint, Bettina; Meinck, Hans-Michael; Buchert, Ralph; Dalmau, Josep; Ahnert-Hilger, Gudrun (8 September 2015). "Anti-DPPX encephalitis: Pathogenic effects of antibodies on gut and brain neurons". Neurology. 85 (10): 890–897. doi:10.1212/WNL.0000000000001907. ISSN 0028-3878. PMC 4560062. PMID 26291285.
  27. ^ a b Boronat, Anna; Gelfand, Jeffrey M.; Gresa-Arribas, Nuria; Jeong, Hyo-Young; Walsh, Michael; Roberts, Kirk; Martinez-Hernandez, Eugenia; Rosenfeld, Myrna R.; Balice-Gordon, Rita; Graus, Francesc; Rudy, Bernardo; Dalmau, Josep (January 2013). "Encephalitis and antibodies to dipeptidyl-peptidase-like protein-6, a subunit of Kv4.2 potassium channels". Annals of Neurology. 73 (1): 120–128. doi:10.1002/ana.23756. PMC 3563722. PMID 23225603.
  28. ^ Sabater, Lidia; Gaig, Carles; Gelpi, Ellen; Bataller, Luis; Lewerenz, Jan; Torres-Vega, Estefanía; Contreras, Angeles; Giometto, Bruno; Compta, Yaroslau; Embid, Cristina; Vilaseca, Isabel; Iranzo, Alex; Santamaría, Joan; Dalmau, Josep; Graus, Francesc (1 June 2014). "A novel non-rapid-eye movement and rapid-eye-movement parasomnia with sleep breathing disorder associated with antibodies to IgLON5: a case series, characterisation of the antigen, and post-mortem study". The Lancet Neurology. 13 (6): 575–586. doi:10.1016/S1474-4422(14)70051-1. ISSN 1474-4422. PMC 4104022. PMID 24703753.
  29. ^ Gaig, Carles; Graus, Francesc; Compta, Yarko; Högl, Birgit; Bataller, Luis; Brüggemann, Norbert; Giordana, Caroline; Heidbreder, Anna; Kotschet, Katya; Lewerenz, Jan; Macher, Stefan; Martí, Maria J.; Montojo, Teresa; Pérez-Pérez, Jesus; Puertas, Inmaculada (2 May 2017). "Clinical manifestations of the anti-IgLON5 disease". Neurology. 88 (18): 1736–1743. doi:10.1212/WNL.0000000000003887. ISSN 0028-3878. PMC 5409845. PMID 28381508.
  30. ^ Lopez-Chiriboga, A. Sebastian; Komorowski, Lars; Kümpfel, Tania; Probst, Christian; Hinson, Shannon R.; Pittock, Sean J.; McKeon, Andrew (15 March 2016). "Metabotropic glutamate receptor type 1 autoimmunity: Clinical features and treatment outcomes". Neurology. 86 (11): 1009–1013. doi:10.1212/WNL.0000000000002476. ISSN 0028-3878. PMC 4799712. PMID 26888994.
  31. ^ a b Lancaster, E.; Martinez-Hernandez, E.; Titulaer, M. J.; Boulos, M.; Weaver, S.; Antoine, J.-C.; Liebers, E.; Kornblum, C.; Bien, C. G.; Honnorat, J.; Wong, S.; Xu, J.; Contractor, A.; Balice-Gordon, R.; Dalmau, J. (1 November 2011). "Antibodies to metabotropic glutamate receptor 5 in the Ophelia syndrome". Neurology. 77 (18): 1698–1701. doi:10.1212/WNL.0b013e3182364a44. ISSN 0028-3878. PMC 3208954. PMID 22013185.

External links edit

  • Autoimmune Encephalitis Alliance