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<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">Annals of Clinical and Experimental Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Annals of Clinical and Experimental Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Анналы клинической и экспериментальной неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-5473</issn><issn publication-format="electronic">2409-2533</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">434</article-id><article-id pub-id-type="doi">10.17816/psaic434</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Clinical analysis</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>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Familial case of ataxia with oculomotor apraxia: first observation in Russian population</article-title><trans-title-group xml:lang="ru"><trans-title>Семейный случай атаксии с окуломоторной апраксией: первое наблюдение в российской популяции</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Klyushnikov</surname><given-names>Sergey A.</given-names></name><name xml:lang="ru"><surname>Клюшников</surname><given-names>Сергей Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sergeklyush@gmail.com</email><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>Sergey N.</given-names></name><name xml:lang="ru"><surname>Иллариошкин</surname><given-names>Сергей Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Prof., RAS Full Member, Deputy Director for Science; Director, Brain Institute</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, академик РАН, зам. директора по научной работе, директор Института мозга</p></bio><email>sergeklyush@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Markova</surname><given-names>E. D.</given-names></name><name xml:lang="ru"><surname>Маркова</surname><given-names>E. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sergeklyush@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Glotova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Глотова</surname><given-names>Н. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sergeklyush@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fedin</surname><given-names>Pavel A.</given-names></name><name xml:lang="ru"><surname>Федин</surname><given-names>Павел Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sergeklyush@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivanova-Smolenskaya</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Иванова-Смоленская</surname><given-names>И. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sergeklyush@gmail.com</email><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="2007-06-14" publication-format="electronic"><day>14</day><month>06</month><year>2007</year></pub-date><volume>1</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>29</fpage><lpage>33</lpage><history><date date-type="received" iso-8601-date="2017-02-07"><day>07</day><month>02</month><year>2017</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2007, Klyushnikov S.A., Illarioshkin S.N., Markova E.D., Glotova N.A., Fedin P.A., Ivanova-Smolenskaya I.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2007, Klyushnikov S.A., Illarioshkin S.N., Markova E.D., Glotova N.A., Fedin P.A., Ivanova-Smolenskaya I.A.</copyright-statement><copyright-year>2007</copyright-year><copyright-holder xml:lang="en">Klyushnikov S.A., Illarioshkin S.N., Markova E.D., Glotova N.A., Fedin P.A., Ivanova-Smolenskaya I.A.</copyright-holder><copyright-holder xml:lang="ru">Klyushnikov S.A., Illarioshkin S.N., Markova E.D., Glotova N.A., Fedin P.A., Ivanova-Smolenskaya I.A.</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://annaly-nevrologii.com/pathID/article/view/434">https://annaly-nevrologii.com/pathID/article/view/434</self-uri><abstract xml:lang="en"><p>Hereditary ataxias represent a clinically and genetically heterogeneous group of disorders, modern classification of which is based on identification of a primary genetic and/or biochemical defect in examined patients and their family members. Recently, autosomal recessive ataxia with oculomotor apraxia was described; it is characterized by combination of coordination problems with specific abnormalities of voluntary eye movements and, probably, by high prevalence if a majority of populations. We presented the first description of this phenotype in Russia observed in two sibs (sisters). Biochemical screening (increased serum level of alphafetoprotein) and molecular analysis enabled to diagnose in this family ataxia-oculomotor apraxia, type 2 (AOA2) – the disorder caused by pathology of senataxin protein and mutations of the respective gene SETX on chromosome 9q34.</p></abstract><trans-abstract xml:lang="ru"><p>Наследственные атаксии представляют клинически и генетически гетерогенную группу заболеваний, современная классификация которых базируется на идентификации первичного генетического и/или биохимического дефекта у обследуемых больных и членов их семей. Сравнительно недавно была описана аутосомно-рецессивная атаксия с окуломоторной апраксией, характеризующаяся сочетанием координаторных расстройств со своеобразными нарушениями произвольных движений глазных яблок и, повидимому, имеющая высокую распространенность в большинстве популяций. Нами представлено первое в России описание данного фенотипа у двух родных сестер. Проведенный биохимический (повышение уровня сывороточного aфетопротеина) и молекулярный скрининг позволил диагностировать в данной семье атаксию-окуломоторную апраксию 2го типа (АОА2) – заболевание, обусловленное патологией белка сенатаксина и мутациями соответствующего гена SETX на хромосоме 9q34.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ataxia with oculomotor apraxia</kwd><kwd>molecular diagnosis</kwd><kwd>senataxin</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>атаксия с окуломоторной апраксией</kwd><kwd>молекулярная диагностика</kwd><kwd>сенатаксин</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Иллариошкин С.Н., Иванова-Смоленская И.А. Дегенеративные заболевания с преимущественным поражением пирамидной системы и мозжечка. В кн.: Яхно Н.Н., Штульман Д.Р. (ред.). Болезни нервной системы. Руководство для врачей (в 2Aх т.). 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