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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">10.25557/2073-7998.2023.04.3-10</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-2280</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>МЕТОДИЧЕСКИЕ МАТЕРИАЛЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METHODOLOGICAL MATERIALS</subject></subj-group></article-categories><title-group><article-title>Международная система цитогеномной номенклатуры человека (ISCN 2020): дополнения и изменения записи результатов стандартного цитогенетического исследования при конститутивных нарушениях</article-title><trans-title-group xml:lang="en"><trans-title>An International System for Human Cytogenomic Nomenclature (ISCN 2020): Additions and modifications in recording the results of standard cytogenetic study in constitutional chromosome abnormalities</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>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><email xlink:type="simple">nvsh05@mail.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>Антоненко</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Antonenko</surname><given-names>V. G.</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>Миньженкова</surname><given-names>М. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Minzhenkova</surname><given-names>M. E.</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>Залетаев</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaletaev</surname><given-names>D. 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>2023</year></pub-date><pub-date pub-type="epub"><day>26</day><month>07</month><year>2023</year></pub-date><volume>22</volume><issue>4</issue><fpage>3</fpage><lpage>10</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шилова Н.В., Антоненко В.Г., Миньженкова М.Е., Залетаев Д.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Шилова Н.В., Антоненко В.Г., Миньженкова М.Е., Залетаев Д.В.</copyright-holder><copyright-holder xml:lang="en">Shilova N.V., Antonenko V.G., Minzhenkova M.E., Zaletaev D.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/2280">https://www.medgen-journal.ru/jour/article/view/2280</self-uri><abstract><p>В 2020 году опубликована действующая версия Международной системы цитогеномной номенклатуры человека (ISCN 2020). В данном обзоре отражены все важные изменения, по отношению к предыдущей версии номенклатуры 2016 года, которые могут иметь значение для записи результатов стандартного цитогенетического исследования. Прежде всего, это касается порядка записи точек разрывов хромосом и обозначения наследования перестроек в заключении о результатах исследования. Добавлены также некоторые разделы и таблицы, изменены и добавлены примеры записи формулы кариотипа при различных перестройках, а также внесены изменения в структуру текста.</p></abstract><trans-abstract xml:lang="en"><p>The current version of the International Human Cytogenomic Nomenclature System (ISCN 2020) is published in 2020. This review reflects all the important changes from the previous 2016 version of the nomenclature, which may be relevant for recording the results of a standard cytogenetic study. First of all, it concerns the order of recording chromosome breakpoints and marking the inheritance of rearrangements in the conclusion of the study results. The new version also adds some sections and tables, modifies and adds examples of recording the karyotype formula at various rearrangements, and makes changes in the text structure.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ISCN 2020</kwd><kwd>ISCN 2016</kwd><kwd>международная система цитогеномной номенклатуры человека</kwd><kwd>хромосомные аномалии</kwd><kwd>стандартное цитогенетическое исследование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ISCN 2020</kwd><kwd>ISCN 2016</kwd><kwd>international system of human cytogenomic nomenclature</kwd><kwd>chromosomal abnormalities</kwd><kwd>standard cytogenetic study</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено в рамках темы государственного задания №122032300370-1 «Изучение структурно-функциональных особенностей и механизмов формирования хромосомных аномалий и геномного дисбаланса».</funding-statement><funding-statement xml:lang="en">The study was supported by the State Task №122032300370-1 “Study of structure-functional features and mechanisms of formation of the 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">ISCN 2020 – An International System for Human Cytogenomic Nomenclature (2020) Ed. 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