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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">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">342</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2019-9-3-32-39</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">Late-onset leukoencephalopathy with predominant damage to the brain stem, spinal cord and increased lactate (clinical observations)</article-title><trans-title-group xml:lang="ru"><trans-title>Лейкоэнцефалопатия с поздним началом с преимущественным поражением ствола головного мозга, спинного мозга и повышением лактата (клинические наблюдения)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7653-3677</contrib-id><name-alternatives><name xml:lang="en"><surname>Karpova</surname><given-names>M. I.</given-names></name><name xml:lang="ru"><surname>Карпова</surname><given-names>М. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>64 Vorovskogo St., Chelyabinsk 454092</p></bio><bio xml:lang="ru"><p>Мария Ильинична Карпова</p><p>454092 Челябинск, ул. Воровского, 64</p></bio><email>kmi_2008@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5799-7233</contrib-id><name-alternatives><name xml:lang="en"><surname>Vasilenko</surname><given-names>A. F.</given-names></name><name xml:lang="ru"><surname>Василенко</surname><given-names>А. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>64 Vorovskogo St., Chelyabinsk 454092</p></bio><bio xml:lang="ru"><p>454092 Челябинск, ул. Воровского, 64</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0875-1963</contrib-id><name-alternatives><name xml:lang="en"><surname>Korotkova</surname><given-names>D. G.</given-names></name><name xml:lang="ru"><surname>Короткова</surname><given-names>Д. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>64 Vorovskogo St., Chelyabinsk 454092</p></bio><bio xml:lang="ru"><p>454092 Челябинск, ул. Воровского, 64</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3169-9777</contrib-id><name-alternatives><name xml:lang="en"><surname>Kochetkov</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Кочетков</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>64 Vorovskogo St., Chelyabinsk 454092</p></bio><bio xml:lang="ru"><p>454092 Челябинск, ул. Воровского, 64</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8955-1604</contrib-id><name-alternatives><name xml:lang="en"><surname>Shestakova</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Шестакова</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>64 Vorovskogo St., Chelyabinsk 454092</p></bio><bio xml:lang="ru"><p>454092 Челябинск, ул. Воровского, 64</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9572-4647</contrib-id><name-alternatives><name xml:lang="en"><surname>Buyanova</surname><given-names>G. V.</given-names></name><name xml:lang="ru"><surname>Буянова</surname><given-names>Г. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>42a Blyukhera St., Chelyabinsk 454087</p></bio><bio xml:lang="ru"><p>454087 Челябинск, ул. Блюхера, 42а</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8419-9026</contrib-id><name-alternatives><name xml:lang="en"><surname>Zaripova</surname><given-names>Z. Z.</given-names></name><name xml:lang="ru"><surname>Зарипова</surname><given-names>З. З.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>70 Vorovskogo St.,Chelyabinsk, 454076</p></bio><bio xml:lang="ru"><p>454076 Челябинск, ул. Воровского, 70</p></bio><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">South Ural State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Южно-Уральский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Chelyabinsk Regional Children’s Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГБУЗ Челябинская областная детская клиническая больница</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Chelyabinsk Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГБУЗ Челябинская областная клиническая больница</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-11-20" publication-format="electronic"><day>20</day><month>11</month><year>2019</year></pub-date><volume>9</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>32</fpage><lpage>39</lpage><history><date date-type="received" iso-8601-date="2019-11-20"><day>20</day><month>11</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-11-20"><day>20</day><month>11</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Karpova M.I., Vasilenko A.F., Korotkova D.G., Kochetkov I.V., Shestakova M.V., Buyanova G.V., Zaripova Z.Z.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Карпова М.И., Василенко А.Ф., Короткова Д.Г., Кочетков И.В., Шестакова М.В., Буянова Г.В., Зарипова З.З.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Karpova M.I., Vasilenko A.F., Korotkova D.G., Kochetkov I.V., Shestakova M.V., Buyanova G.V., Zaripova Z.Z.</copyright-holder><copyright-holder xml:lang="ru">Карпова М.И., Василенко А.Ф., Короткова Д.Г., Кочетков И.В., Шестакова М.В., Буянова Г.В., Зарипова З.З.</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/342">https://nmb.abvpress.ru/jour/article/view/342</self-uri><abstract xml:lang="en"><p>Leukoencephalopathy with brain stem and spinal cord involvement and elevated lactate on magnetic resonance spectroscopy is a progressive hereditary disease of the nervous system clinically characterized by pyramidal and cerebellar dysfunction, dorsal column signs and sometimes axonal neuropathy with specific neuroimaging signs of damage to the nervous system, detected by magnetic resonance imaging. This disease is caused by mutations in the DARS2 gene. The article presents an analysis of three clinical cases with the manifestation of neurological symptoms in adolescence. Clinical features and magnetic resonance imaging findings are discussed, difficulties of differential diagnosis with multiple sclerosis are presented. Genetic screening algorithms are proposed.</p></abstract><trans-abstract xml:lang="ru"><p>Лейкоэнцефалопатия с преимущественным поражением ствола головного мозга, спинного мозга и повышением лактата при магнитно-резонансной спектроскопии — наследственное заболевание нервной системы с прогрессирующим течением, проявляющееся пирамидными и мозжечковыми нарушениями в сочетании с признаками поражения задних столбов спинного мозга и в некоторых случаях с аксональной нейропатией, со специфическими нейровизуализационными признаками поражения нервной системы, выявляемыми при магнитно-резонансной томографии. Развитие данного заболевания связано с мутациями в гене DARS2. В статье представлен анализ 3 клинических случаев с манифестацией неврологических симптомов в подростковом возрасте. Рассмотрены особенности клинических проявлений и магнитно-резонансной картины, сложности дифференциальной диагностики с рассеянным склерозом, алгоритмы генетического обследования.</p></trans-abstract><kwd-group xml:lang="en"><kwd>leukoencephalopathy with brainstem and spinal cord involvement and elevated lactate</kwd><kwd>magnetic resonance features</kwd><kwd>genetic screening algorithm</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>лейкоэнцефалопатия с преимущественным поражением ствола головного мозга</kwd><kwd>спинного мозга и повышением лактата</kwd><kwd>магнитно-резонансные данные</kwd><kwd>алгоритм генетического обследования</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">.	Van der Knaap M.S., van der Voom P., Barkhof F. et al. 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