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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">10.25557/2073-7998.2026.01.60-62</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-3378</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>Гипометилирование гена MEG8 как вариант эпигенетической нормы</article-title><trans-title-group xml:lang="en"><trans-title>Hypomethylation of the MEG8 gene as a variant of epigenetic norm</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>Панченко</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Panchenko</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Панченко Елизавета Григорьевна</p><p>115522, г. Москва, ул. Москворечье, д. 1</p><p>117997, г. Москва, ул. Островитянова, д.1</p><p>119049, г. Москва, 4-й Добрынинский переулок д. 1/9</p></bio><bio xml:lang="en"><p>Elizaveta G. Panchenko</p><p>1, Moskvorechie st., Moscow, 115478</p><p>1, Ostrovitianova st., Moscow, 117513</p><p>1/9, 4th Dobryninsky Lane, Moscow, 119049</p></bio><email xlink:type="simple">pangen1994@gmail.com</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>Чеснокова</surname><given-names>Г. Г</given-names></name><name name-style="western" xml:lang="en"><surname>Chesnokova</surname><given-names>G. 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, Moskvorechie st., Moscow, 115478</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ефремова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Efremova</surname><given-names>A. 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, Moskvorechie st., Moscow, 115478</p></bio><xref ref-type="aff" rid="aff-2"/></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, Moskvorechie st., Moscow, 115478</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Стрельников</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Strelnikov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, г. Москва, ул. Москворечье, д. 1</p><p>117997, г. Москва, ул. Островитянова, д.1</p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115478</p><p>1, Ostrovitianova st., Moscow, 117513</p></bio><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ Медико-генетический научный центр имени академика Н.П. Бочкова; ГБОУ ВПО Российский национальный исследовательский медицинский университет имени Н.И.Пирогова Минздрава России; ГБУЗ Морозовская детская городская клиническая больница Департамента здравоохранения города Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics; Pirogov Russian National Research Medical University; Morozovskaya Children’s City Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><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><aff xml:lang="en" id="aff-3"><institution>Research Centre for Medical Genetics</institution><country>Russian Federation</country></aff><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ФГБНУ Медико-генетический научный центр имени академика Н.П. Бочкова; ГБОУ ВПО Российский национальный исследовательский медицинский университет имени Н.И.Пирогова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics; Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>09</day><month>02</month><year>2026</year></pub-date><volume>25</volume><issue>1</issue><fpage>60</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Панченко Е.Г., Чеснокова Г.Г., Ефремова А.В., Залетаев Д.В., Стрельников В.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Панченко Е.Г., Чеснокова Г.Г., Ефремова А.В., Залетаев Д.В., Стрельников В.В.</copyright-holder><copyright-holder xml:lang="en">Panchenko E.G., Chesnokova G.G., Efremova A.V., Zaletaev D.V., Strelnikov V.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/3378">https://www.medgen-journal.ru/jour/article/view/3378</self-uri><abstract><p>Выявление мультилокусных нарушений импринтинга (MLID) сопряжено с получением эпигенотипа, включащего данные об изменении метилирования тех импринтированных генов, функция и вклад которых в фенотип еще недостаточно изучены. В частности, достоверно не установлена связь с фенотипом гипометилирования генов GRB10, MEST и PEG3. Также не ясна роль гипометилирования гена MEG8 при отсутствии гиперметилирования гена MEG3 в импринтированном кластере на хромосоме 14q32.2. Проведенное нами исследование контрольной выборки 100 здоровых индивидов не выявило аномалий метилирования генов GRB10, MEST и PEG3, что, вероятно, указывает на их причастность к формированию фенотипов пациентов с MLID и другими болезнями импринтинга. В то же время, выявленное в 4% изолированное гипометилирование гена MEG8, вероятно, является вариантом нормы. </p></abstract><trans-abstract xml:lang="en"><p>Detection of multilocus imprinting disturbances (MLID) reveals epigenotypes which include data on methylation changes in imprinted genes whose function and contribution to the phenotype have not been well understood yet. The association with the phenotype has not been reliably established for hypomethylation of the GRB10, MEST, and PEG3 genes. The role of MEG8 hypomethylation in the absence of MEG3 hypermethylation in the imprinted cluster on chromosome 14q32.2 is also unclear. Our study of a control cohort of 100 healthy individuals revealed no methylation abnormalities in the GRB10, MEST, and PEG3 genes, likely indicating their involvement in the development of the phenotypes of patients with MLID and other imprinting disorders. However, isolated hypomethylation of the MEG8 gene, detected in 4% of samples, is likely a normal variant.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нарушения импринтинга</kwd><kwd>MЧ-MLPA</kwd><kwd>MLID</kwd><kwd>MEG8</kwd><kwd>MEG3</kwd><kwd>GRB10</kwd><kwd>MEST</kwd><kwd>PEG3</kwd></kwd-group><kwd-group xml:lang="en"><kwd>imprinting disorders</kwd><kwd>MS-MLPA</kwd><kwd>MLID</kwd><kwd>MEG8</kwd><kwd>MEG3</kwd><kwd>GRB10</kwd><kwd>MEST</kwd><kwd>PEG3</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Минобрнауки России для ФГБНУ «МГНЦ».</funding-statement><funding-statement xml:lang="en">The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation for RCMG.</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">Mackay D.J.G., Gazdagh G., Monk D., et al. 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