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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">10.25557/2073-7998.2025.09.78-80</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-3182</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>КРАТКОЕ СООБЩЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BRIEF REPORT</subject></subj-group></article-categories><title-group><article-title>Молекулярно-цитогенетическая характеристика дериватной Х хромосомы у девочки с аномальным фенотипом</article-title><trans-title-group xml:lang="en"><trans-title>Molecular cytogenetic characterization of a derivative X chromosome in a girl with abnormal phenotype</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>Меглей</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Meglei</surname><given-names>A. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Меглей Анастасия Юрьевна</p><p>115522 г. Москва, ул. Москворечье, д.1</p></bio><bio xml:lang="en"><p>Meglei Anastasiia Yurevna</p><p>1, Moskvorechye st., Moscow, 115522</p></bio><email xlink:type="simple">an.megley95@yandex.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>Кузина</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzina</surname><given-names>N. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522 г. Москва, ул. Москворечье, д.1</p></bio><bio xml:lang="en"><p>1, Moskvorechye st., Moscow, 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курякова</surname><given-names>Н. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuryakova</surname><given-names>N. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522 г. Москва, ул. Москворечье, д.1</p></bio><bio xml:lang="en"><p>1, Moskvorechye st., Moscow, 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шилова</surname><given-names>Н. В</given-names></name><name name-style="western" xml:lang="en"><surname>Shilova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522 г. Москва, ул. Москворечье, д.1</p></bio><bio xml:lang="en"><p>1, Moskvorechye st., Moscow, 115522</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 имени академика 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><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>13</day><month>11</month><year>2025</year></pub-date><volume>24</volume><issue>9</issue><fpage>78</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Меглей А.Ю., Кузина Н.Ю., Курякова Н.Б., Шилова Н.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Меглей А.Ю., Кузина Н.Ю., Курякова Н.Б., Шилова Н.В.</copyright-holder><copyright-holder xml:lang="en">Meglei A.Y., Kuzina N.Y., Kuryakova N.B., Shilova N.V.</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/3182">https://www.medgen-journal.ru/jour/article/view/3182</self-uri><abstract><p>Представлена молекулярно-цитогенетическая характеристика возникшей de novo дериватной Х хромосомы с терминальной делецией короткого плеча и терминальной дупликацией длинного плеча у девочки с аномальным фенотипом. Обсуждаются возможный механизм формирования данной хромосомной аномалии и роль хромосомного дисбаланса в формировании клинических проявлений.</p></abstract><trans-abstract xml:lang="en"><p>The study provides a comprehensive molecular cytogenetic characterization of a de novo derivative X chromosome exhibiting a terminal deletion of the short arm and a terminal duplication of the long arm in a female patient presenting with an abnormal phenotype. The potential mechanisms that may underlie the formation of this chromosomal abnormality, as well as the contribution of chromosomal imbalance in clinical manifestations, are discussed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>делеция Xp22.33</kwd><kwd>дупликация Xq25</kwd><kwd>FISH</kwd></kwd-group><kwd-group xml:lang="en"><kwd>deletion Xp22.33</kwd><kwd>duplication Xq25</kwd><kwd>FISH</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено в рамках темы НИР № 122032300370-1 «Изучение структурно-функциональных особенностей и механизмов формирования хромосомных аномалий и геномного дисбаланса»</funding-statement><funding-statement xml:lang="en">The research was supported by research project No. 122032300370-1 «Study of structural and functional features and mechanisms of formation of chromosomal abnormalities and genomic imbalance».</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Giglio S., Pirola B., Arrigo G. et al. 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