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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">10.25557/2073-7998.2026.01.37-41</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-3375</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>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLE</subject></subj-group></article-categories><title-group><article-title>Распространённость амплификации CDK4 в альвеолярной рабдомиосаркоме  с учётом транслокационных вариантов</article-title><trans-title-group xml:lang="en"><trans-title>Prevalence of CDK4 Amplification in Alveolar Rhabdomyosarcoma   Considering Translocation Variants</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>Шарлай</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharlai</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117198, г. Москва, ул. Саморы Машела, д. 1</p></bio><bio xml:lang="en"><p>1 Samory Mashela st., Moscow, 117198</p></bio><email xlink:type="simple">stacysharlay@yandex.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>Друй</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Druy</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117198, г. Москва, ул. Саморы Машела, д. 1</p></bio><bio xml:lang="en"><p>1 Samory Mashela st., Moscow, 117198</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>Трахтман</surname><given-names>П. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Trachtman</surname><given-names>P. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117198, г. Москва, ул. Саморы Машела, д. 1</p></bio><bio xml:lang="en"><p>1 Samory Mashela st., Moscow, 117198</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>Коновалов</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Konovalov</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117198, г. Москва, ул. Саморы Машела, д. 1</p><p>125993, г. Москва, ул. Баррикадная, д.2/1, стр.1</p></bio><bio xml:lang="en"><p>1 Samory Mashela st., Moscow, 117198</p><p>2/1 Barrikadnaya st., Moscow, 125993</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии имени Дмитрия Рогачева       Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunolog</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУ Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии имени Дмитрия Рогачева       Минздрава России; ФГБОУ ДПО Российская медицинская академия непрерывного профессионального образования Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunolog; Russian Medical Academy of Continuous Professional Education</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>37</fpage><lpage>41</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шарлай А.С., Друй А.Е., Трахтман П.Е., Коновалов Д.М., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Шарлай А.С., Друй А.Е., Трахтман П.Е., Коновалов Д.М.</copyright-holder><copyright-holder xml:lang="en">Sharlai A.S., Druy A.E., Trachtman P.E., Konovalov D.M.</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/3375">https://www.medgen-journal.ru/jour/article/view/3375</self-uri><abstract><sec><title>Введение</title><p>Введение. Альвеолярная рабдомиосаркома (АРМС) характеризуется типичными химерными транскриптами и иногда сопровождается амплификацией онкогенов, в частности CDK4.</p></sec><sec><title>Цель</title><p>Цель: определить частоту амплификации CDK4 в когорте пациентов с АРМС и оценить связь амплификации с транслокационным статусом опухоли.</p></sec><sec><title>Методы</title><p>Методы. Выполнено ретроспективное исследование 155 образцов АРМС и РМС БДУ (без дополнительных уточнений). Амплификация CDK4 определялась методом интерфазной FISH; транскриптовые варианты идентифицировались с помощью ОТ-ПЦР и РНК-секвенирования. Статистическая обработка включала расчёт долевых показателей и 95% доверительных интервалов методом Клоппера-Пирсона; сравнение долей – с использованием χ² критерия; уровень значимости p&lt;0,05. Результаты. Амплификация CDK4 выявлена в 22,6% (35/155) образцов; варианты амплификации включали низкокопийную (1,5–4 копий), высококопийную (&gt;4 копий) и кластерную. Частота амплификации была различной в подгруппах: PAX3::FOXO1 – 24,7% (25/101), PAX7::FOXO1 – 18,8% (3/16), PAX3::NCOA1 – 25% (1/4), отсутствие транслокации – 17,6% (6/34). Статистически значимых корреляций между статусом CDK4 и клинико-анатомическими или молекулярно-генетическими параметрами не выявлено (p&gt;0,05).</p></sec><sec><title>Заключение</title><p>Заключение. Амплификация CDK4 является достаточно распространённым событием при АРМС; её роль как клинически значимого биомаркера требует дальнейшей молекулярной и функциональной валидации. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Alveolar rhabdomyosarcoma (ARMS) is commonly associated with characteristic fusion transcripts and, in some cases, with oncogene amplifications, including CDK4.</p></sec><sec><title>Objective</title><p>Objective: to determine the prevalence of CDK4 amplification in a cohort of ARMS cases and to evaluate its association with translocation status.</p></sec><sec><title>Methods</title><p>Methods. A retrospective study of 155 formalin-fixed paraffin-embedded tumor samples was performed. CDK4 copy number was assessed by interphase FISH; fusion transcripts were identified by RT-PCR and RNA sequencing. Statistical analysis included calculation of proportions with 95% Clopper-Pearson CIs and χ² tests for comparisons; p&lt;0.05 considered significant.</p></sec><sec><title>Results</title><p>Results. CDK4 amplification was detected in 22.6% (35/155) of samples. Amplification patterns included low-level (1.5–4 copies), high-level (&gt;4 copies) and clustered signals. Frequencies by translocation subgroup were: PAX3::FOXO1 — 24.7% (25/101), PAX7::FOXO1 — 18.8% (3/16), PAX3::NCOA1 — 25% (1/4), fusion-negative — 17.6% (6/34). No statistically significant associations were found between CDK4 status and clinicopathologic or molecular parameters (p&gt;0.05).</p></sec><sec><title>Conclusion</title><p>Conclusion. CDK4 amplification is a relatively common genomic event in ARMS; its clinical utility requires further molecular and functional validation.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>CDK4</kwd><kwd>альвеолярная рабдомиосаркома</kwd><kwd>PAX3::FOXO1</kwd><kwd>PAX7::FOXO1</kwd><kwd>PAX3::NCOA1</kwd></kwd-group><kwd-group xml:lang="en"><kwd>CDK4</kwd><kwd>Alveolar Rhabdomyosarcoma</kwd><kwd>PAX3::FOXO1</kwd><kwd>PAX7::FOXO1</kwd><kwd>PAX3::NCOA1</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">WHO Classification of Tumours Editorial Board. Soft tissue and bone tumours. 5th ed. Vol. 3. Lyon: International Agency for Research on Cancer; 2020.</mixed-citation><mixed-citation xml:lang="en">WHO Classification of Tumours Editorial Board. Soft tissue and bone tumours. 5th ed. Vol. 3. 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