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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.1234/XXXX-XXXX-2015-12-39-46</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-78</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОПИСАНИЕ КЛИНИЧЕСКОГО СЛУЧАЯ</subject></subj-group></article-categories><title-group><article-title>Ганглиозидоз GM2 у взрослых: первое российское наблюдение и обзор литературы</article-title><trans-title-group xml:lang="en"><trans-title>GM2 gangliosidosis in adults: first Russian case report and literature review</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Руденская</surname><given-names>Г. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Rudenskaya</surname><given-names>G. E.</given-names></name></name-alternatives><email xlink:type="simple">rudenskayay@med-gen.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Букина</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Bukina</surname><given-names>A. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Букина</surname><given-names>Т. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Bukina</surname><given-names>T. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иллариошкин</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Illarioshkin</surname><given-names>S. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Клюшников</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kluyshnikov</surname><given-names>S. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воскобоева</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Voskoboeva</surname><given-names>E. Yu.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Захарова</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharova</surname><given-names>E. Yu.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное научное учреждение «Медико-генетический научный центр»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBI «Research Centre for Medical Genetics»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное научное учреждение «Научный центр неврологии»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FSBI «Research Centre for Neurology»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>16</day><month>06</month><year>2016</year></pub-date><volume>14</volume><issue>12</issue><fpage>39</fpage><lpage>46</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Руденская Г.Е., Букина А.М., Букина Т.М., Иллариошкин С.Н., Клюшников С.А., Воскобоева Е.Ю., Захарова Е.Ю., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Руденская Г.Е., Букина А.М., Букина Т.М., Иллариошкин С.Н., Клюшников С.А., Воскобоева Е.Ю., Захарова Е.Ю.</copyright-holder><copyright-holder xml:lang="en">Rudenskaya G.E., Bukina A.M., Bukina T.M., Illarioshkin S.N., Kluyshnikov S.A., Voskoboeva E.Y., Zakharova E.Y.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.medgen-journal.ru/jour/article/view/78">https://www.medgen-journal.ru/jour/article/view/78</self-uri><abstract><p>Два клинически сходных генетических варианта ганглиозидоза GM2 (Г-GM2) - болезнь Тея-Сакса (БТС), распространенная у евреев-ашкенази, и болезнь Зандхофа, связанные с генами HEXA и HEXB соответственно, - наряду с частым младенческим фенотипом имеют редкие поздние формы: подострую и хроническую, различающиеся кроме возраста начала течением и симптомами. Описан хронический Г-GM2 (БТС) у 27-летней больной из этнически смешанной семьи (мать - русская, отец - татарин): первое верифицированное российское наблюдение хронического Г-GM2 и один из немногих случаев хронической БТС у не-ашкенази в мировой литературе. Диагноз, предположенный заочно через 14 лет после начала болезни по типичному сочетанию синдрома спинальной амиотрофии и спиноцеребеллярной атаксии, подтвержден биохимическими методами (снижение уровня гексозаминидазы А с остаточной активностью 4%) и анализом ДНК: найдена мутация HEXA c.805G&gt;A (p.Gly269Ser) отцовского происхождения. Мутация типична для хронической БТС у ашкенази и найдена в нескольких нееврейских семьях, но в тюркских популяциях ранее не описана. Представлен обзор литературы о Г-GM2 у взрослых.</p></abstract><trans-abstract xml:lang="en"><p>Two genetic variants of GM2 gangliosidosis, Tay-Sachs disease (TS) common in Ashkenazi Jews (gene HEXA ) and Sandhoff disease (gene HEXB ), have rare late-onset forms: subacute or juvenile and chronic or adult. A case of chronic TS in a 27-year-old female of mixed ethnicity (Russian mother and Tatar father) with typical combination of spinal amyotrophy and spinocerebellar ataxia is presented. The diagnosis was suspected by correspondence 14 years after disease onset and confirmed by decreased hexosaminidase A level with residual activity 4% and detection of HEXA mutation c.805G&gt;A (p.Gly269Ser) of paternal origin. The mutation is common in chronic TS in Ashkenazi and was also found in few non-Ashkenazi patients, but not in Turkic populations as in our case. This is a first chronic GM2 case in Russia and one of few late-onset TS non-Ashkenazi cases with common Ashkenazi mutation in world literature.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ганглиозидоз GM2</kwd><kwd>поздняя болезнь Тея</kwd><kwd>Сакса</kwd><kwd>ген HEXA</kwd><kwd>частая мутация ашкенази</kwd><kwd>поражение мотонейронов</kwd><kwd>атаксия</kwd><kwd>gangliosidosis GM2</kwd><kwd>late-onset Tay</kwd><kwd>Sachs disease (LOTS)</kwd><kwd>gene HEXA</kwd><kwd>common Ashkenazi mutation</kwd><kwd>neuronopathy</kwd><kwd>ataxia</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Захарова Е.Ю. Оценка относительных частот и оптимизация методов биохимической и молекулярно-генетической диагностики наследственных болезней обмена веществ: Автореф. дисс. на соискание ученой степени д.м.н. - М.: 2012. - 43 с.</mixed-citation><mixed-citation xml:lang="en">Захарова Е.Ю. 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