<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Neuromuscular Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Neuromuscular Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Нервно-мышечные болезни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-8721</issn><issn publication-format="electronic">2413-0443</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">499</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2022-12-3-45-51</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЙ РАЗБОР</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The first family case of spinocerebellar ataxia type 14 in Russia</article-title><trans-title-group xml:lang="ru"><trans-title>Первое описание семейного случая спиноцеребеллярной атаксии 14-го типа в России</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3179-7668</contrib-id><name-alternatives><name xml:lang="en"><surname>Nuzhnyy</surname><given-names>E. P.</given-names></name><name xml:lang="ru"><surname>Нужный</surname><given-names>Е. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Evgeniy Petrovich Nuzhnyy</p><p>80 Volokolamskoe Shosse, Moscow 125367</p></bio><bio xml:lang="ru"><p>Евгений Петрович Нужный</p><p>125367 Москва, Волоколамское шоссе, 80</p></bio><email>enuzhny@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9419-1159</contrib-id><name-alternatives><name xml:lang="en"><surname>Abramycheva</surname><given-names>N. Yu.</given-names></name><name xml:lang="ru"><surname>Абрамычева</surname><given-names>Н. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Moscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8752-7045</contrib-id><name-alternatives><name xml:lang="en"><surname>Klyushnikov</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Клюшников</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Moscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2704-6282</contrib-id><name-alternatives><name xml:lang="en"><surname>Illarioshkin</surname><given-names>S. N.</given-names></name><name xml:lang="ru"><surname>Иллариошкин</surname><given-names>С. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>80 Volokolamskoe Shosse, Moscow 125367</p></bio><bio xml:lang="ru"><p>125367 Москва, Волоколамское шоссе, 80</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Neurology</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научный центр неврологии»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-09-21" publication-format="electronic"><day>21</day><month>09</month><year>2022</year></pub-date><volume>12</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>45</fpage><lpage>51</lpage><history><date date-type="received" iso-8601-date="2022-09-21"><day>21</day><month>09</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-09-21"><day>21</day><month>09</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Nuzhnyy E.P., Abramycheva N.Y., Klyushnikov S.A., Illarioshkin S.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Нужный Е.П., Абрамычева Н.Ю., Клюшников С.А., Иллариошкин С.Н.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Nuzhnyy E.P., Abramycheva N.Y., Klyushnikov S.A., Illarioshkin S.N.</copyright-holder><copyright-holder xml:lang="ru">Нужный Е.П., Абрамычева Н.Ю., Клюшников С.А., Иллариошкин С.Н.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://nmb.abvpress.ru/jour/article/view/499">https://nmb.abvpress.ru/jour/article/view/499</self-uri><abstract xml:lang="en"><p>Spinocerebellar ataxia type 14 (SCA14) is a rare neurodegenerative disease with a predominant cerebellar affection and autosomal dominant inheritance. A characteristic clinical presentation is slowly progressive cerebellar ataxia, hyperreflexia, cognitive impairment and movement disorders (dystonia and myoclonus). Clinical and genetic characteristics of the first familial case of SCA14 in Russia (a 77‑year‑old female patient) caused by heterozygous pathogenic mutation c.155G&gt;C (p.Cys52Ser) in exon 1 in <italic>PRKCG</italic> gene (NM_002739.1) are presented. The total duration of the disease was 47 years, and the follow‑up period was 32 years. The disease phenotype corresponded to isolated ataxia with a slow rate of progression; brain MRI revealed atrophy of the cerebellar vermis and hemispheres, symmetrical hyperintensity of the dentate nucleus on T2‑weighted images. The features of the SCA14 clinical presentation and the effect of mutations in the regulatory and kinase domains of protein kinase C gamma on the formation of pure and complex phenotypes are discussed.</p></abstract><trans-abstract xml:lang="ru"><p>Спиноцеребеллярная атаксия 14‑го типа (СЦА14) – редкое нейродегенеративное заболевание с преимущественным поражением мозжечка и аутосомно‑доминантным типом наследования. Характерная клиническая картина включает медленно прогрессирующую мозжечковую атаксию, гиперрефлексию, когнитивные и двигательные нарушения (дистония, миоклонус). Представлены клинико‑генетические характеристики первого семейного случая СЦА14 в России (пробанд – пациентка 77 лет), обусловленного патогенной гетерозиготной мутацией c.155G&gt;C (p.Cys52Ser) в экзоне 1 гена <italic>PRKCG</italic> (NM_002739.1). Общая продолжительность заболевания составила 47 лет, катамнез наблюдения – 32 года. Фенотип заболевания соответствовал изолированной атаксии с медленным темпом прогрессирования, при проведении магнитно‑резонансной томографии головного мозга выявлены признаки атрофии червя и полушарий мозжечка, симметричный гиперинтенсивный сигнал от зубчатых ядер в режиме Т2. Обсуждаются особенности клинической картины СЦА14 и влияние мутаций в регуляторном и киназном доменах протеинкиназы С‑гамма на формирование изолированного и комплексного фенотипов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>spinocerebellar ataxia type 14</kwd><kwd><italic>PRKCG</italic> gene</kwd><kwd>mutation</kwd><kwd>clinical presentation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>спиноцеребеллярная атаксия 14‑го типа</kwd><kwd>ген <italic>PRKCG</italic></kwd><kwd>мутация</kwd><kwd>клиническая картина</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Yamashita I., Sasaki H., Yabe I. et al. A novel locus for dominant cerebellar ataxia (SCA14) maps to a 10.2-cM interval flanked by D19S206 and D19S605 on chromosome 19q13.4-qter. Ann Neurol 2000;48(2):156–63. DOI: 10.1002/1531-8249(200008)48:2&lt;156::aid-ana4&gt;3.0.co;2-9</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Chen D.H., Brkanac Z., Verlinde C.L. et al. Missense mutations in the regulatory domain of PKC gamma: a new mechanism for dominant nonepisodic cerebellar ataxia. Am J Hum Genet 2003;72(4):839–49. DOI: 10.1086/373883</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Manto M., Huisman T. The Cerebellum. 1 st edn. San Diego: Elsevier, 2018.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Schmitz-Hübsch T., Lux S., Bauer P. et al. Spinocerebellar ataxia type 14: refining clinicogenetic diagnosis in a rare adult-onset disorder. Ann Clin Transl Neurol 2021;8(4):774–89. DOI: 10.1002/acn3.51315</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Chelban V., Wiethoff S., Fabian-Jessing B.K. et al. Genotype-phenotype correlations, dystonia and disease progression in spinocerebellar ataxia type 14. Mov Disord 2018;33:1119–29. DOI: 10.1002/mds.27334</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Sun M., Johnson A.K., Nelakuditi V. et al. Targeted exome analysis identifies the genetic basis of disease in over 50 % of patients with a wide range of ataxia-related phenotypes. Genet Med 2019;21(1):195–206. DOI: 10.1038/s41436-018-0007-7</mixed-citation></ref><ref id="B7"><label>7.</label><citation-alternatives><mixed-citation xml:lang="en">Ryzhkova O.P., Kardymon O.L., Prohorchuk E.B. et al. Guidelines for the interpretation of massive parallel sequencing variants (update 2018, version 2). Meditsinskaya genetika = Medical Genetics 2019; 18(2):3–23. (In Russ.). DOI: 10.25557/2073-7998.2019.02.3-23</mixed-citation><mixed-citation xml:lang="ru">Рыжкова О.П., Кардымон О.Л., Прохорчук Е.Б. и др. Руководство по интерпретации данных последовательности ДНК человека, полученных методами массового параллельного секвенирования (MPS) (редакция 2018, версия 2). Медицинская генетика 2019;18(2):3–23. DOI: 10.25557/2073-7998.2019. 02.3-23</mixed-citation></citation-alternatives></ref><ref id="B8"><label>8.</label><mixed-citation>De Michele G., Galatolo D., Galosi S. et al. Episodic ataxia and severe infantile phenotype in spinocerebellar ataxia type 14: expansion of the phenotype and novel mutations. J Neurol 2022;269(3):1476–84. DOI: 10.1007/s00415-021-10712-5</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Visser J.E., Bloem B.R., van de Warrenburg B.P. PRKCG mutation (SCA-14) causing a Ramsay Hunt phenotype. Mov Disord 2007;22:1024–6. DOI: 10.1002/mds.21414</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Foncke E.M., Beukers R.J., Tijssen C.C. et al. Myoclonus-dystonia and spinocerebellar ataxia type 14 presenting with similar phenotypes: trunk tremor, myoclonus, and dystonia. Parkinsonism Relat Disord 2010;16:288–9. DOI: 10.1016/j.parkreldis.2009.10.008</mixed-citation></ref><ref id="B11"><label>11.</label><citation-alternatives><mixed-citation xml:lang="en">Dobrynina L.A., Gadzhieva Z.Sh., Kalashnikova L.A. et al. Neuropsychological profile and vascular risk factors in patients with cerebral microangiopathy. Annaly klinicheskoy i experimentalnoy nevrologii = Annals of Clinical and Experimental Neurology 2018;12(4):5–15. (In Russ.). DOI: 10.25692/ACEN.2018.4.1</mixed-citation><mixed-citation xml:lang="ru">Добрынина Л.А., Гаджиева З.Ш., Калашникова Л.А. и др. Нейропсихологический профиль и факторы сосудистого риска у больных с церебральной микроангиопатией. Анналы клинической и экспериментальной неврологии 2018;12(4):5–15. DOI: 10.25692/ACEN.2018.4.1</mixed-citation></citation-alternatives></ref><ref id="B12"><label>12.</label><mixed-citation>Powell A., Chandrasekharan S., Cook-Deegan R. Spinocerebellar ataxia: patient and health professional perspectives on whether and how patents affect access to clinical genetic testing. Genet Med 2010;12(4 Suppl):S83–S110. DOI: 10.1097/GIM.0b013e3181d67e44</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Wong M.M.K., Hoekstra S.D., Vowles J. et al. Neurodegeneration in SCA14 is associated with increased PKCγ kinase activity, mislocalization and aggregation. Acta Neuropathol Commun 2018;6:99. DOI: 10.1186/s40478-018-0600-7</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Stevanin G., Hahn V., Lohmann E. et al. Mutation in the catalytic domain of protein kinase C gamma and extension of the phenotype associated with spinocerebellar ataxia type 14. Arch Neurol 2004;61:1242–8. DOI: 10.1001/archneur.61.8.1242</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Adachi N., Kobayashi T., Takahashi H. et al. Enzymological analysis of mutant protein kinase C gamma causing spinocerebellar ataxia type 14 and dysfunction in Ca 2+ homeostasis. J Biol Chem 2008;283:19854–63. DOI: 10.1074/jbc.M801492200</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Pilo C.A., Newton A.C. Two sides of the same coin: Protein kinase C γ in cancer and neurodegeneration. Front Cell Dev Biol 2022;21;10:929510. DOI: 10.3389/fcell.2022.929510</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Takahashi H., Adachi N., Shirafuji T. et al. Identification and characterization of PKCγ, a kinase associated with SCA14, as an amyloidogenic protein. Hum Mol Genet 2015;24(2):525–39. DOI: 10.1093/hmg/ddu472</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Schols L., Bauer P., Schmidt T. et al. Autosomal dominant cerebellar ataxias: clinical features, genetics, and pathogenesis. Lancet Neurol 2004;3:291–304. DOI: 10.1016/S1474-4422(04)00737-9</mixed-citation></ref></ref-list></back></article>
