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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">vavilov</journal-id><journal-title-group><journal-title xml:lang="ru">Вавиловский журнал генетики и селекции</journal-title><trans-title-group xml:lang="en"><trans-title>Vavilov Journal of Genetics and Breeding</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-3259</issn><publisher><publisher-name>Institute of Cytology and Genetics of Siberian Branch of the RAS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/vjgb-26-95</article-id><article-id custom-type="elpub" pub-id-type="custom">vavilov-5302</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>МЕДИЦИНСКАЯ ГЕНЕТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MEDICAL GENETICS</subject></subj-group></article-categories><title-group><article-title>Клинический случай Х-сцепленной гипогидротической эктодермальной дисплазии, вызванной дупликацией Xq13.1, затрагивающей ген EDA</article-title><trans-title-group xml:lang="en"><trans-title>A clinical case of X-linked hypohidrotic ectodermal dysplasia caused by an Xq13.1 duplication affecting the EDA gene</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>Степаненко</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanenko</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</p></bio><email xlink:type="simple">vsevolod.stepanenko@medgenetics.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>Жалсанова</surname><given-names>И. Ж.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhalsanova</surname><given-names>I. Zh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Фонова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fonova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Зуев</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zuev</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Государкина</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Gosudarkina</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Киреева</surname><given-names>Т. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kireeva</surname><given-names>T. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Равжаева</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ravzhaeva</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Агафонова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Agafonova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Сеитова</surname><given-names>Г. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Seitova</surname><given-names>G. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</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>Монахова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Monakhova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Скрябин</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Skryabin</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Томск</p></bio><bio xml:lang="en"><p>Tomsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт медицинской генетики Томского национального исследовательского медицинского центра Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «Биотехнологический кампус»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>LLC “Biotech Campus”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>13</day><month>10</month><year>2026</year></pub-date><volume>30</volume><issue>6</issue><fpage>949</fpage><lpage>954</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Степаненко В.И., Жалсанова И.Ж., Фонова Е.А., Зуев А.С., Государкина С.Н., Киреева Т.Н., Равжаева Е.Г., Агафонова А.А., Сеитова Г.Н., Монахова А.С., Скрябин Н.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Степаненко В.И., Жалсанова И.Ж., Фонова Е.А., Зуев А.С., Государкина С.Н., Киреева Т.Н., Равжаева Е.Г., Агафонова А.А., Сеитова Г.Н., Монахова А.С., Скрябин Н.А.</copyright-holder><copyright-holder xml:lang="en">Stepanenko V.I., Zhalsanova I.Z., Fonova E.A., Zuev A.S., Gosudarkina S.N., Kireeva T.N., Ravzhaeva E.G., Agafonova A.A., Seitova G.N., Monakhova A.S., Skryabin N.A.</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://vavilov.elpub.ru/jour/article/view/5302">https://vavilov.elpub.ru/jour/article/view/5302</self-uri><abstract><p>X-сцепленная гипогидротическая эктодермальная дисплазия (синдром Криста–Сименса–Турена, МКБ-10: Q82.4) представляет собой наиболее распространенную форму эктодермальной дисплазии, вызванной наследственными нарушениями развития производных эктодермы. Заболевание существенно влияет на качество жизни пациентов, проявляясь классической триадой симптомов: гипогидрозом, гипотрихозом и гиподонтией, что создает риски нарушения терморегуляции и требует сложной стоматологической реабилитации. Молекулярной основой патологии служат нарушения в гене EDA, ответственном за синтез эктодисплазина-А. Данный белок принадлежит к семейству фактора некроза опухоли (TNF) и играет критическую сигнальную роль в процессе эктодермально-мезенхимальных взаимодействий во время эмбрионального развития. В настоящей работе описан клинический случай мальчика с фенотипом X-сцепленной гипогидротической эктодермальной дисплазии, обусловленный ранее не описанной структурной перестройкой. Методом полногеномного секвенирования (WGS) была выявлена микродупликация локуса Xq13.1 размером приблизительно 397.3 Кб, непосредственно затрагивающая ген EDA. Комплексный биоинформатический анализ подтвердил отсутствие дополнительных патогенных или вероятно патогенных вариантов в других генах, которые могли обусловливать фенотип пациента. Микродупликация Xq13.1 подтверждена у пробанда и его матери методом количественной полимеразной цепной реакции в режиме реального времени. Анализ метилирования гена AR продемонстрировал у матери равновероятную инактивацию X-хромосомы (74/26 %), что объясняет ее бессимптомное носительство. Проведено сравнение клинических проявлений пробанда с описанными в литературе пациентами, имеющими близкие по координатам структурные перестройки. На основании международных и российских руководств по интерпретации данных массового параллельного секвенирования обнаруженный вариант классифицирован как патогенный. Идентификация этой структурной перестройки расширяет известный мутационный спектр гена EDA. Уточнение молекулярно-генетического диагноза в описанной семье имеет критическое значение не только для верификации нозологии, но и для коррекции тактики ведения пациента, включая междисциплинарный подход к лечению. Кроме того, это позволяет провести качественное медико-генетическое консультирование, выявить носительство у родственников женского пола и разработать эффективные меры первичной и вторичной профилактики заболевания в данной семье.</p></abstract><trans-abstract xml:lang="en"><p>X-linked hypohidrotic ectodermal dysplasia (XLHED; Christ–Siemens–Touraine syndrome, ICD-10: Q82.4) is the most common type of ectodermal dysplasia, caused by genetic disorders of ectodermal derivatives. The condition significantly impacts patients’ quality of life, presenting with a classic triad of hypohidrosis, hypotrichosis and hypodontia, which creates a risk of impaired thermoregulation and necessitates complex dental rehabilitation. The molecular basis of the disease lies in alterations of the EDA gene, which encodes ectodysplasin A. This protein belongs to the tumor necrosis factor (TNF) family and plays a critical signaling role in ectodermal-mesenchymal interactions during embryonic development. The present case report describes a boy with an XLHED phenotype caused by a previously unreported structural rearrangement. Whole-genome sequencing (WGS) identified a ~397.3 kb microduplication at the Xq13.1 locus directly involving the EDA gene. Comprehensive bioinformatic analysis ruled out additional pathogenic or likely pathogenic variants in other genes that could account for the patient’s phenotype. The Xq13.1 microduplication was confirmed in both the proband and his mother using quantitative real-time PCR (qPCR). Androgen receptor (AR) gene methylation analysis in the mother revealed a random X-chromosome inactivation (74/26 %), explaining her asymptomatic carrier status. The proband’s clinical manifestations were also compared to those of literature-reported patients with overlapping genomic rearrangements. Based on international and Russian guidelines for the interpretation of massively parallel sequencing data, the identified variant was classified as pathogenic. Identification of this structural rearrangement expands the known mutational spectrum of the EDA gene. Establishing a precise molecular genetic diagnosis in this family is critical not only for disease verification but also for optimizing patient management through a multidisciplinary approach. Furthermore, it enables comprehensive genetic counseling, identification of female carriers among relatives and the development of timely primary and secondary prevention measures for the disease in this family. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>эктодермальная дисплазия</kwd><kwd>гипогидротическая дисплазия</kwd><kwd>синдром Криста–Сименса–Турена</kwd><kwd>EDA</kwd><kwd>вариации числа копий участков ДНК (CNV)</kwd><kwd>массовое параллельное секвенирование (МПС)</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ectodermal dysplasia</kwd><kwd>hypohidrotic</kwd><kwd>Christ–Siemens–Touraine syndrome</kwd><kwd>EDA</kwd><kwd>copy number variations (CNV)</kwd><kwd>next-generation sequencing (NGS)</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was supported by the Ministry of Science and Higher Education of the Russian Federation, project No. 122013100190-6</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">Al Marzouqi F., Michot C., Dos Santos S., Bonnefont J.P., Bodemer C., Hadj-Rabia S. 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