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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">10.25557/2073-7998.2021.07.59-66</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-1949</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Распространенность редких хромосомных аномалий по данным эпидемиологического мониторинга врожденных пороков развития в Московской области</article-title><trans-title-group xml:lang="en"><trans-title>Prevalence of rare chromosomal abnormalities according to epidemiological register of congenital malformations in the Moscow region</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>Заяева</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaiaeva</surname><given-names>E. E.</given-names></name></name-alternatives><email xlink:type="simple">89263479601@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>Андреева</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Andreeva</surname><given-names>E. N.</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>Демикова</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Demikova</surname><given-names>N. S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ДПО «Российская медицинская академия непрерывного профессионального образования» Министерства здравоохранения Российской Федерации; ГБУЗ МО «Московский областной научно-исследовательский институт акушерства и гинекологии»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation; Moscow Regional Research Institute of Obstetrics and Gynecology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ДПО «Российская медицинская академия непрерывного профессионального образования» Министерства здравоохранения Российской Федерации; ОСП НИКИ педиатрии им. академика Вельтищева Ю.Е. ФГАОУ ВО РНИМУ им. Н. И. Пирогова МЗ РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation; The Research and Clinical Institute for Pediatrics named after Academician Yuri Veltischev of the Pirogov Russian National Research Medical University of the Russian Ministry of Health</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>10</month><year>2021</year></pub-date><volume>20</volume><issue>7</issue><fpage>59</fpage><lpage>66</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Заяева Е.Е., Андреева Е.Н., Демикова Н.С., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Заяева Е.Е., Андреева Е.Н., Демикова Н.С.</copyright-holder><copyright-holder xml:lang="en">Zaiaeva E.E., Andreeva E.N., Demikova N.S.</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/1949">https://www.medgen-journal.ru/jour/article/view/1949</self-uri><abstract><p>Популяционная частота редких хромосомных аномалий (ХА) до сих пор достоверно не определена. Выполнить эту задачу можно путем регистрации случаев редких ХА среди плодов, живорожденных и мертворожденных в популяционных регистрах врожденных пороков развития, которые существуют в большинстве стран мира. По данным эпидемиологического регистра Московской области за период с 2011 по 2019 годы частота редких ХА составила 0,49 случаев на 1000 рождений, их доля в структуре всех ХА составляет 11,3%. В процентном соотношении структура редких ХА выглядит следующим образом: триплоидии - 41,2%, делеции - 23,9%, несбалансированные транслокации - 10,6%, редкие трисомии - 6%, дупликации - 5,6%, маркерные хромосомы - 3,7%, другие редкие ХА - 9%. Учитывая международные данные можно предполагать, что полученная популяционная частота редких ХА является заниженной за счет их недоучета и недостаточной диагностики в исследуемом регионе, что требует дальнейших исследований.</p></abstract><trans-abstract xml:lang="en"><p>The prevalence of rare chromosomal abnormalities (CAs) has not yet been reliably determined. This task can be accomplished by registering cases of rare CAs among fetuses, live births and stillborn in population-based registries of congenital malformations that exist in most countries of the world. According to the epidemiological register of the Moscow region for the period from 2011 to 2019, the prevalence rate of rare CA was 0,49 cases per 1000 births, their share in the structure of all CA is 11,3%. In percentage terms, the structure of rare CAs is presented as follows: triploidy - 41.2%, deletions - 23.9%, unbalanced translocations - 10.6%, rare trisomies - 6%, duplications - 5.6%, marker chromosomes - 3.7%, other rare CAs - 9%. Taking into account the international data, we can assume that the obtained prevalence rate of rare CAs is underestimated due to their underreporting and insufficient diagnosis in the studied region, which requires further research.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>хромосомные аномалии</kwd><kwd>популяционная частота</kwd><kwd>новорожденные</kwd><kwd>плоды</kwd><kwd>мониторинг</kwd><kwd>хромосомный микроматричный анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>chromosomal abnormalities</kwd><kwd>prevalence</kwd><kwd>newborn</kwd><kwd>fetus</kwd><kwd>monitoring</kwd><kwd>array comparative genomic hybridization</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">Stevenson R.E., Hall J.G., Everman DB, Solomon BD, eds. Human Malformations and Related Anomalies. 3rd ed. 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