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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Child Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Child Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Русский журнал детской неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2073-8803</issn><issn publication-format="electronic">2412-9178</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">510</article-id><article-id pub-id-type="doi">10.17650/2073-8803-2025-20-1-32-38</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL OBSERVATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Early infantile epileptic encephalopathy in the structure of microcephaly-capillary malformation syndrome: a clinical case</article-title><trans-title-group xml:lang="ru"><trans-title>Ранняя младенческая эпилептическая энцефалопатия в структуре синдрома микроцефалии с капиллярными мальформациями: клинический случай</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-9061-5319</contrib-id><name-alternatives><name xml:lang="en"><surname>Maslov</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Маслов</surname><given-names>М. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Maksim S. Maslov.</p><p>39 Bondarenko St., Tula 300010</p></bio><bio xml:lang="ru"><p>Маслов Максим Сергеевич.</p><p>300010 Тула, ул. Бондаренко, 39</p></bio><email>sir.mistermax@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7611-6280</contrib-id><name-alternatives><name xml:lang="en"><surname>Sviridova</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Свиридова</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>39 Bondarenko St., Tula 300010</p></bio><bio xml:lang="ru"><p>300010 Тула, ул. Бондаренко, 39</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-5934-8705</contrib-id><name-alternatives><name xml:lang="en"><surname>Zalevskaya</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Залевская</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>39 Bondarenko St., Tula 300010</p></bio><bio xml:lang="ru"><p>300010 Тула, ул. Бондаренко, 39</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tula Children’s Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГУЗ ТО «Тульская детская областная клиническая больница»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-04-18" publication-format="electronic"><day>18</day><month>04</month><year>2025</year></pub-date><volume>20</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>32</fpage><lpage>38</lpage><history><date date-type="received" iso-8601-date="2025-04-17"><day>17</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-04-17"><day>17</day><month>04</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, ABV-Press</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, АБВ-пресс</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">ABV-Press</copyright-holder><copyright-holder xml:lang="ru">АБВ-пресс</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://rjdn.abvpress.ru/jour/about/editorialPolicies</ali:license_ref></license></permissions><self-uri xlink:href="https://rjdn.abvpress.ru/jour/article/view/510">https://rjdn.abvpress.ru/jour/article/view/510</self-uri><abstract xml:lang="en"><p>The article presents a clinical case of early infantile epileptic encephalopathy diagnosed in a child with a confirmed genetic study of microcephaly-capillary malformation syndrome. The extremely rare occurrence of this syndrome, as well as the small amount of information devoted to the problem of epilepsy in this syndrome, make the presented clinical case relevant and useful for pediatric specialists (neurologists, geneticists, pediatricians). In addition, the article presents the experience of using hormone therapy in the treatment of epilepsy, which also had an effect on the main manifestation of the disease (capillary malformations).</p></abstract><trans-abstract xml:lang="ru"><p>В статье представлен клинический случай ранней младенческой эпилептической энцефалопатии, диагностированной у ребенка с подтвержденным генетическим исследованием синдромом микроцефалии с капиллярными мальформациями. Крайне редкая встречаемость данного синдрома, а также малый объем информации, посвященной проблеме эпилепсии при этом синдроме, делают представленный клинический случай актуальным и полезным для специалистов детского профиля (неврологов, генетиков, педиатров). В дополнение в статье приведен опыт применения гормональной терапии в лечении эпилепсии, которая также оказала эффект на основное проявление заболевания (капиллярные мальформации).</p></trans-abstract><kwd-group xml:lang="en"><kwd>epilepsy</kwd><kwd>infantile epilepsy</kwd><kwd>microcephaly-capillary malformation syndrome</kwd><kwd><italic>STAMBP</italic> gene</kwd><kwd>early infantile epileptic encephalopathy</kwd><kwd>early infantile myoclonic epileptic encephalopathy</kwd><kwd>antiepileptic therapy</kwd><kwd>pharmacoresistant epilepsy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эпилепсия</kwd><kwd>младенческая эпилепсия</kwd><kwd>синдром микроцефалии с капиллярными мальформациями</kwd><kwd>ген <italic>STAMBP</italic></kwd><kwd>ранняя младенческая эпилептическая энцефалопатия</kwd><kwd>ранняя младенческая миоклоническая эпилептическая энцефалопатия</kwd><kwd>антиэпилептическая терапия</kwd><kwd>фармакорезистентная эпилепсия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Demikova N.S., Kakaulina V.S., Pechatnikova N.L. et al. 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