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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">perinatology</journal-id><journal-title-group><journal-title xml:lang="ru">Российский вестник перинатологии и педиатрии</journal-title><trans-title-group xml:lang="en"><trans-title>Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1027-4065</issn><issn pub-type="epub">2500-2228</issn><publisher><publisher-name>Ltd. “The National Academy of Pediatric Science and Innovation”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21508/1027-4065-2022-67-1-101-107</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-1586</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>КЛИНИЧЕСКИЕ СЛУЧАИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Аутосомно-доминантная умственная отсталость, связанная с геном MED13L</article-title><trans-title-group xml:lang="en"><trans-title>Autosomal dominant intellectual disability associated with the MED13L gene</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9465-4213</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Левченко</surname><given-names>O. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Levchenko</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Левченко Ольга Александровна — науч. сотр. лаборатории редактирования генома</p><p>115522 Москва, ул. Москворечье, д. 1Нагиева Сабина Эльмановна — студентка Первого Московского государственного медицинского университета им. И.М. Сеченова,ORCID: 0000–0002–8837–4722119991 Москва, ул. Трубецкая, д. 8, стр. 2 </p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">olevchenko@med-gen.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8244-9367</contrib-id><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><bio xml:lang="ru"><p>Руденская Галина Евгеньевна — д.м.н., проф., гл. науч. сотр. научно-консультативного отделения </p><p>115522 Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2672-6294</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маркова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Markova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Маркова Татьяна Владимировна — к.м.н., врач-генетик консультативного отделения</p><p>115522 Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5946-4577</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бессонова</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bessonova</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бессонова Людмила Александровна — врач-генетик консультативного отделения </p><p>115522 Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0972-5118</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марахонов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Marakhonov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Марахонов Андрей Владимирович — к.б.н., ст. науч. сотр. лаборатории генетической эпидемиологии </p><p>115522 Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8837-4722</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нагиева</surname><given-names>С. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Nagieva</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нагиева Сабина Эльмановна — студентка</p><p>119991 Москва, ул. Трубецкая, д. 8, стр. 2 </p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4905-1303</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щагина</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchagina</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щагина Ольга Анатольевна — к.м.н., вед. науч. сотр. лаборатории ДНК-диагностики, зав. лабораторией молекулярно-генетической диагностики</p><p>115522 Москва, ул. Москворечье, д. 1 </p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4962-6947</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лавров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lavrov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лавров Александр Вячеславович — к.м.н., вед. науч. сотр. лаборатории редактирования генома</p><p>115522 Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Медико-генетический научный центр им. акад. Н.П. Бочкова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО «Первый Московский государственный медицинский университет им. И.М. Сеченова» Минздрава России (Сеченовский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>08</day><month>04</month><year>2022</year></pub-date><volume>67</volume><issue>1</issue><fpage>101</fpage><lpage>107</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ltd. “The National Academy of Pediatric Science and Innovation”, 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><copyright-holder xml:lang="en">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><license xlink:href="https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.ped-perinatology.ru/jour/article/view/1586">https://www.ped-perinatology.ru/jour/article/view/1586</self-uri><abstract><p>Умственная отсталость — широко распространенная группа заболеваний, встречающаяся у 1–3% населения. Более половины случаев умственной отсталости обусловлены различными генетическими причинами, в том числе моногенными. В статье описаны три клинических наблюдения MED13L-связанной умственной отсталости с аутосомно-доминантным типом наследования. Методами массового параллельного секвенирования у больных выявлены ранее не описанные, вероятно, патогенные варианты p.Cys118delinsTrpSer и p.Gln2111fs, а также ранее описанная мутация p.Pro866Leu в гене MED13L (NM_015335). Особый интерес представил семейный случай с двумя больными детьми от разных браков матери. В данной семье мутация, обнаруженная у обоих детей, не была обнаружена у матери (исследовали клетки крови и буккальный эпителий). Мы предполагаем наличие материнского гонадного мозаицизма, что позволяет рекомендовать семьям с подтвержденными случаями MED13L-ассоциированной умственной отсталости планировать беременность с проведением пренатальной или преимплантационной диагностики. Показано, что заболевание имеет широкое клиническое разнообразие и различается по тяжести даже в пределах одной семьи.</p></abstract><trans-abstract xml:lang="en"><p>Intellectual disability is a widespread group of diseases with population frequency 1–3%. More than half of intellectual disability cases are due to various genetic causes, including monogenic ones. The paper describes three clinical cases of MED13L-associated intellectual disability with an autosomal dominant inheritance. Novel probably pathogenic variants p.Cys118delinsTrpSer and p.Gln2111fs, as well as the previously described p.Pro866Leu mutation in the MED13L gene (NM_015335), were detected in patients by massive parallel sequencing. А rare familial case with two affected maternal half-siblings was of particular interest since the mutation detected in both children was not found in the mother (blood cells and buccal epithelium were investigated). We assume the presence of gonadal mosaicism in the mother, which allows to recommend families with confirmed cases of MED13L-associated intellectual disability to plan pregnancies with prenatal or preimplantational diagnostics. The disease has been shown to have a wide clinical variability, even intrafamilial.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>умственная отсталость</kwd><kwd>MRFACD</kwd><kwd>ген MED13L</kwd><kwd>массовое параллельное секвенирование</kwd><kwd>гонадный мозаицизм</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>intellectual disability</kwd><kwd>MRFACD</kwd><kwd>MED13L gene</kwd><kwd>massive parallel sequencing</kwd><kwd>gonadal mosaicism</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">Лавров А.В., Банников А.В., Чаушева А.И., Дадали Е.Л. Генетика умственной отсталости. 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