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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">10.25557/2073-7998.2026.02.24-32</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-3392</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>Генетическая структура синдромов парциального гигантизма и сосудистых мальформаций</article-title><trans-title-group xml:lang="en"><trans-title>Genetic structure of partial gigantism syndromes and vascular malformations</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>Бычкова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bychkova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бычкова Екатерина Владимировна</p><p>115478, г. Москва, Россия, ул. Москворечье, д.1 </p></bio><bio xml:lang="en"><p>Ekaterina V. Bychkova</p><p>1, Moskvorechie st., Moscow, 115478, Russian Federation</p></bio><email xlink:type="simple">ktrn.bychkova@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>Семенова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Semenova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115478, г. Москва, Россия, ул. Москворечье, д.1</p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115478, Russian Federation</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>Сагоян</surname><given-names>Г. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Sagoyan</surname><given-names>G. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522, г. Москва, Россия, Каширское шоссе, д. 23</p></bio><bio xml:lang="en"><p>23, Kashirskoe shosse, Moscow, 115522, Russian Federation</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>Алимов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Alimov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>107014, г. Москва, Россия, ул. Рубцовско-Дворцовая, дом 1/3 корп. 8 </p></bio><bio xml:lang="en"><p>8, 1/3 Rubtsovsko-Dvortsovaya st., Moscow, 107014, Russian Federation </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>Жигулин</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhigulin</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>107014, г. Москва, Россия, ул. Рубцовско-Дворцовая, дом 1/3 корп. 8</p></bio><bio xml:lang="en"><p> 8, 1/3 Rubtsovsko-Dvortsovaya st., Moscow, 107014, Russian Federation </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>Сомсиков</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Somsikov</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>107014, г. Москва, Россия, ул. Рубцовско-Дворцовая, дом 1/3 корп. 8</p></bio><bio xml:lang="en"><p>8, 1/3 Rubtsovsko-Dvortsovaya st., Moscow, 107014, Russian Federation</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>Хагуров</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khagurov</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>123242, г. Москва, Россия, ул. Садово-Кудринская, д. 15 </p></bio><bio xml:lang="en"><p>15, Sadovaya-Kudrinskaya st., Moscow, 123242, Russian Federation</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гусева</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Guseva</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115478, г. Москва, Россия, ул. Москворечье, д.1</p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115478, Russian Federation</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>Володин</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Volodin</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115478, г. Москва, Россия, ул. Москворечье, д.1</p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115478, Russian Federation</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>Смирнов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115478, г. Москва, Россия, ул. Москворечье, д.1</p><p>117513, г. Москва, Россия, ул. Островитянова, д. 1</p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115478, Russian Federation</p><p>1, Ostrovityanova st., Moscow, 117513, Russian Federation</p></bio><xref ref-type="aff" rid="aff-5"/></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> 115478, г. Москва, Россия, ул. Москворечье, д.1 </p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115478, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>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-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр онкологии имени Н.Н. Блохина Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center of Oncology named after N.N. Blokhin</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Детская городская клиническая больница святого Владимира Департамента здравоохранения города Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Children’s State Clinical Hospital of St. Vladimir of Moscow City Health Department</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Детская городская клиническая больница им. Н.Ф. Филатова Департамента здравоохранения города Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Children’s City Clinical Hospital named after N.F. Filatov of Moscow City Health Department</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Медико-генетический научный центр имени академика Н.П. Бочкова;&#13;
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;&#13;
N.I. 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>16</day><month>03</month><year>2026</year></pub-date><volume>25</volume><issue>2</issue><fpage>24</fpage><lpage>32</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бычкова Е.В., Семенова Н.В., Сагоян Г.Б., Алимов С.В., Жигулин А.Е., Сомсиков Г.А., Хагуров Р.А., Гусева Д.М., Володин И.В., Смирнов А.С., Стрельников В.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Бычкова Е.В., Семенова Н.В., Сагоян Г.Б., Алимов С.В., Жигулин А.Е., Сомсиков Г.А., Хагуров Р.А., Гусева Д.М., Володин И.В., Смирнов А.С., Стрельников В.В.</copyright-holder><copyright-holder xml:lang="en">Bychkova E.V., Semenova N.A., Sagoyan G.B., Alimov S.V., Zhigulin A.E., Somsikov G.A., Khagurov R.A., Guseva D.M., Volodin I.V., Smirnov A.S., 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/3392">https://www.medgen-journal.ru/jour/article/view/3392</self-uri><abstract><p>Заболевания с соматическим мозаицизмом представляют собой гетерогенную группу состояний, обусловленных постзиготическими вариантами в генах, регулирующих клеточный рост, пролиферацию и ангиогенез. Их фенотипические проявления крайне вариабельны и часто перекрываются между собой, что делает молекулярно-генетическое тестирование необходимым для точной диагностики и выбора тактики лечения. В данном исследовании была использована кастомная панель для высокопроизводительного секвенирования, включающая гены, участвующие в развитии синдромов избыточного роста и сосудистых мальформаций, для анализа выборки пациентов с подозрением на PROS (PIK3CA-Related Overgrowth Spectrum) и другие мозаичные расстройства. Патогенные или вероятно патогенные варианты были обнаружены в 65,8% случаев, что свидетельствует о высокой диагностической эффективности разработанной панели. Частота альтернативного аллеля вариантов в большинстве случаев составляла менее 20%, что подчеркивает необходимость применения секвенирования с большой глубиной покрытия для выявления низкоуровневого мозаицизма. Исследование также продемонстрировало применимость данного подхода для дифференциальной диагностики мозаичных форм избыточного роста и сосудистых мальформаций, не относящихся к PROS. Таким образом, таргетное высокопроизводительное секвенирование с большой глубиной покрытия разработанной панели имеет высокую эффективность в осуществлении точной диагностики для подбора таргетной терапии и способствует расширению генетического спектра мозаичных заболеваний.</p></abstract><trans-abstract xml:lang="en"><p>Disorders of somatic mosaicism represent a heterogeneous group of conditions caused by postzygotic variants in genes regulating cell growth, proliferation, and angiogenesis. Their phenotypic manifestations are highly variable and often overlapping, making molecular genetic testing essential for accurate diagnosis and therapeutic decision-making. In this study, we applied a custom NGS panel targeting genes involved in overgrowth syndromes and vascular malformations to a cohort of patients with suspected PROS and other mosaic disorders. Pathogenic or likely pathogenic variants were detected in 65,8% of cases, indicating a high diagnostic efficiency of the developed panel. The variant allele frequency was generally below 20%, highlighting the need for high-depth sequencing to detect lowlevel mosaicism. The study also demonstrated the utility of this approach for differential diagnosis of mosaic overgrowth and vascular disorders beyond PROS. Thus, high-depth targeted NGS of the developed panel proved to be an effective tool for precision diagnostics, selection of targeted therapy, and expanding the genetic spectrum of mosaic disorders.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>PROS</kwd><kwd>PIK3CA</kwd><kwd>соматический мозаицизм</kwd><kwd>парциальный гигантизм</kwd><kwd>сосудистые мальформации</kwd><kwd>дифференциальная диагностика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>PROS</kwd><kwd>PIK3CA</kwd><kwd>somatic mosaicism</kwd><kwd>partial gigantism</kwd><kwd>vascular malformations</kwd><kwd>differential diagnosis</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено при финансовой поддержке ООО “Новартис Фарма”.</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">McNulty S.N., Evenson M.J., Corliss M.M., et al. 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