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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Genetics</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0016-6758</issn><issn publication-format="electronic">3034-5103</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">667219</article-id><article-id pub-id-type="doi">10.31857/S0016675824080081</article-id><article-id pub-id-type="edn">bflnhi</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>ГЕНЕТИКА ЧЕЛОВЕКА</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The Role of Gene-Gene Interactions in the Formation of Predisposition to Preeclampsia</article-title><trans-title-group xml:lang="ru"><trans-title>Роль межгенных взаимодействий в формировании предрасположенности к преэклампсии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Babovskaya</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Бабовская</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasia.babovskaya@medgenetics.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Trifonova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Трифонова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasia.babovskaya@medgenetics.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Serebrova</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Сереброва</surname><given-names>В. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasia.babovskaya@medgenetics.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stepanov</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Степанов</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasia.babovskaya@medgenetics.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт медицинской генетики Томского национального исследовательского медицинского центра</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-08-15" publication-format="electronic"><day>15</day><month>08</month><year>2024</year></pub-date><volume>60</volume><issue>8</issue><fpage>82</fpage><lpage>91</lpage><history><date date-type="received" iso-8601-date="2025-02-26"><day>26</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0016-6758/article/view/667219">https://transsyst.ru/0016-6758/article/view/667219</self-uri><abstract xml:lang="en"><p>Identification of the hereditary basis of preeclampsiaremains a relevant area for medical genetics. Despite numerous attempts to search for the main predetermining factors due to the multifactorial nature of the preeclampsia no generally accepted hypotheses for the pathogenesis of this pregnancy complication. One of the progressive approaches to the study of complex diseases is a analysis of gene-gene interactions which makes it possible to isolate from a large array of combinations factors that can determine a high or low risk of predisposition within the pathology under consideration. In the presented work the analysis of gene-gene interactions was used to create a model that predicts the risk of severe preeclampsia and find key combinations of genes predisposing to the development of preeclampsia in the Russian population were obtained.For the first time was demonstrated the prognostic potential of combinations of the rs3774298 <italic>BCL</italic><italic>6</italic> and rs2071045 <italic>LEP</italic> loci in the development of a severe form of preeclampsia (OR = 2.97). Additionally it was found that the rs3774298 polymorphic variant of the <italic>BCL</italic><italic>6</italic> gene is localized in a functionally active region of the genome, located in the binding site of the transcription factor CTCF, which can function as both a transcription activator and a repressor. That emphasizes the role of cell regulatory systems in the mechanisms of the formation and course of preeclampsia.</p></abstract><trans-abstract xml:lang="ru"><p>Выявление наследственной основы преэклампсии остается актуальным направлением для медицинской генетики. Несмотря на многочисленные попытки поиска главных предопределяющих факторов, до настоящего времени не сформулировано общепринятых гипотез патогенеза этого осложнения беременности ввиду многофакторной природы рассматриваемой патологии. Одним из прогрессивных подходов к изучению сложных заболеваний является модельный анализ ген-генных взаимодействий, позволяющий выделять из большого массива факторов те сочетания генотипов, которые могут определять высокий или низкий риск предрасположенности в рамках рассматриваемой патологии. В представленной работе анализ межгенных взаимодействий применен для создания модели, прогнозирующей риск тяжелого течения преэклампсии, получены ключевые сочетания генов, предрасполагающие к развитию преэклампсии в русской популяции. Впервые был продемонстрирован прогностический потенциал сочетаний локусов rs3774298 <italic>BCL6</italic> и rs2071045 <italic>LEP</italic> в отношении развития тяжелой формы исследуемой патологии (OR = 2,97). Дополнительно установлено, что полиморфный вариант rs3774298 гена <italic>BCL6</italic> локализуется в функционально активном регионе генома, расположенном в сайте связывания транскрипционного фактора <italic>CTCF</italic>, который может функционировать как активатор транскрипции, так и репрессор, что подчеркивает роль регуляторных систем клетки в механизмах формирования и течения преэклампсии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>preeclampsia</kwd><kwd>SNP×SNP interactions</kwd><kwd>gene-gene interactions</kwd><kwd>single nucleotide polymorphisms</kwd><kwd>placenta</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>преэклампсия</kwd><kwd>SNP×SNP взаимодействия</kwd><kwd>межгенные взаимодействия</kwd><kwd>однонуклеотидные полиморфные варианты</kwd><kwd>плацента</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский фонд фундаментальных исследований</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Foundation for Basic Research</institution></institution-wrap></funding-source><award-id>122020200083-8</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lvovs D., Фаворова О.О., Фаворов А.В. 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