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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">Advances in Molecular Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Advances in Molecular Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Успехи молекулярной онкологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-805X</issn><issn publication-format="electronic">2413-3787</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">757</article-id><article-id pub-id-type="doi">10.17650/2313-805X-2025-12-1-53-60</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>RESEARCH ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ЭКСПЕРИМЕНТАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">CNA landscape of HER2-negative breast cancer during administration of taxane-containing schemes of neoadjuvant chemotherapy</article-title><trans-title-group xml:lang="ru"><trans-title>CNA-ландшафт HER2-негативного рака молочной железы при применении таксансодержащих схем неоадъювантной химиотерапии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8815-2786</contrib-id><name-alternatives><name xml:lang="en"><surname>Ibragimova</surname><given-names>M. K.</given-names></name><name xml:lang="ru"><surname>Ибрагимова</surname><given-names>М. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Marina Konstantinovna Ibragimova </p><p>5 Kooperativny Line, Tomsk 634009, Russia;</p><p>36 Lenin Prospekt, Tomsk 634050, Russia;</p><p>2 Moskovsky Trakt, Tomsk 634050, Russia </p></bio><bio xml:lang="ru"><p>Марина Константиновна Ибрагимова</p><p>Россия, 634009 Томск, пер. Кооперативный, 5;</p><p>Россия, 634050 Томск, пр-кт Ленина, 36;</p><p>Россия, 634050 Томск, Московский тракт, 2</p></bio><email>imk1805@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9022-7764</contrib-id><name-alternatives><name xml:lang="en"><surname>Kravtsova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Кравцова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 Kooperativny Line, Tomsk 634009, Russia;</p><p>36 Lenin Prospekt, Tomsk 634050, Russia</p></bio><bio xml:lang="ru"><p>Россия, 634009 Томск, пер. Кооперативный, 5;</p><p>Россия, 634050 Томск, пр-кт Ленина, 36</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7419-4512</contrib-id><name-alternatives><name xml:lang="en"><surname>Tsyganov</surname><given-names>M. M.</given-names></name><name xml:lang="ru"><surname>Цыганов</surname><given-names>М. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 Kooperativny Line, Tomsk 634009, Russia;</p><p>2 Moskovsky Trakt, Tomsk 634050, Russia </p></bio><bio xml:lang="ru"><p>Россия, 634009 Томск, пер. Кооперативный, 5;</p><p>Россия, 634050 Томск, Московский тракт, 2</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0714-8927</contrib-id><name-alternatives><name xml:lang="en"><surname>Litviakov</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Литвяков</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 Kooperativny Line, Tomsk 634009, Russia;</p><p>36 Lenin Prospekt, Tomsk 634050, Russia;</p><p>2 Moskovsky Trakt, Tomsk 634050, Russia </p><p>Bld. 2, 7 Pereulok Chekist, Seversk 636013, Russia </p></bio><bio xml:lang="ru"><p>Россия, 634009 Томск, пер. Кооперативный, 5;</p><p>Россия, 634050 Томск, пр-кт Ленина, 36;</p><p>Россия, 634050 Томск, Московский тракт, 2;</p><p>Россия, 636013 Северск, пер. Чекист, 7, корп. 2 </p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Cancer Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт онкологии ФГБНУ «Томский национальный исследовательский медицинский центр Российской академии наук»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Research Tomsk State University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Национальный исследовательский Томский государственный университет»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Siberian State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Сибирский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Seversk Biophysical Research Center of the Federal Medical and Biological Agency of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУН «Северский биофизический научный центр» Федерального медико-биологического агентства России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2025</year></pub-date><volume>12</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>53</fpage><lpage>60</lpage><history><date date-type="received" iso-8601-date="2025-04-14"><day>14</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-04-14"><day>14</day><month>04</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Ibragimova M.K., Kravtsova E.A., Tsyganov M.M., Litviakov N.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Ибрагимова М.К., Кравцова Е.А., Цыганов М.М., Литвяков Н.В.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Ibragimova M.K., Kravtsova E.A., Tsyganov M.M., Litviakov N.V.</copyright-holder><copyright-holder xml:lang="ru">Ибрагимова М.К., Кравцова Е.А., Цыганов М.М., Литвяков Н.В.</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://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://umo.abvpress.ru/jour/article/view/757">https://umo.abvpress.ru/jour/article/view/757</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>Evaluation of when and how to include taxanes in preoperative chemotherapy is becoming more important in the era when molecular and genetic approaches allow to develop biologically targeted therapeutic medications and select patients who can benefit from certain cytotoxic agents.<bold>Aim. </bold>To analyze the use of CNA genetic landscape (CNA – copy number aberration) luminal B HER2-negative (HER2 – human epidermal growth factor receptor type 2) breast cancer during taxane-containing neoadjuvant chemotherapy (NCT) for identification of the groups of potential CNA markers of objective response to treatment and CNA markers of prognosis of hematogenous metastases.<bold>Materials and methods. </bold>The study included 28 patients with luminal B HER2-negative breast cancer T1–4N0–3M0 stage IIA–IIIB aged 24–67 years (mean age 44.6 ± 0.3 years). In neoadjuvant regimen, the patients received 4–8 courses of chemotherapy per the ACT, AT schemes and taxotere as monotherapy. As study samples, paired tumor biopsies taken prior to treatment under ultrasound control and operative material after neoadjuvant therapy were used. Micromatrix analysis was performed using high density DNA CytoScanTM HD Array (Affymetrix, uSA). The results were processed using Chromosome Analysis Suite 4.0 (Affymetrix, uSA) software. Statistical data processing was performed in Statistica 8.0 (StatSoft Inc., uSA) software.<bold>Results. </bold>Objective response was observed in the absence of amplification in the 20q11.22 (<italic>р</italic><italic> </italic>= 0.003) region and presence of amplifications in the 16p13.2 (<italic>р</italic><italic> </italic>= 0.027) locus in the tumor prior to treatment. After NCT, hematogenous metastases developed in the tumor in the presence of a small number of amplifications in the 20q13.33 (<italic>р</italic><italic> </italic>= 0.002) locus.<bold>Conclusion. </bold>Potential predictive CNA markers of objective response to treatment and prognostic CNA markers of hematogenous metastases during administration of taxane-containing schemes of neoadjuvant chemotherapy were identified.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Оценка того, как и когда включать таксаны в предоперационную химиотерапию, становится более актуальной в эпоху, когда молекулярно-генетический подход не только позволяет разрабатывать биологически направленные терапевтические средства, но и предполагает возможность выбора пациентов, которым будут полезны определенные цитотоксические агенты.<bold>Цель исследования </bold>– анализ изменения CNA-генетического ландшафта (CNA – copy number aberration, аберрации числа копий) опухоли молочной железы люминального В HER2-отрицательного (HER2 – рецептор эпидермального фактора роста 2-го типа) подтипа под действием таксансодержащих схем неоадъювантной химиотерапии (НХТ) для выявления групп потенциальных CNA-маркеров объективного ответа на лечение и CNA-маркеров прогнозирования возникновения гематогенного метастазирования.<bold>Материалы и методы. </bold>В исследование включены 28 больных раком молочной железы T1–4N0–3M0 IIA–IIIB стадии люминального В HER2-негативного подтипа в возрасте 24–67 лет (средний возраст 44,6 ± 0,3 года). В неоадъювантном режиме пациенты получали 4–8 курсов химиотерапии по схемам ACT, AT и таксотер в монорежиме. В качестве исследуемого материала использованы парные биопсийные опухолевые образцы, взятые до лечения под контролем ультразвукового исследования, а также операционный материал после неоадъювантной химиотерапии для каждого пациента. Микроматричный анализ проводили на микроматрицах (ДНк-чипах) высокой плотности CytoScanTM HD Array (Affymetrix, США). Для обработки результатов использовали программу Chromosome Analysis Suite 4.0 (Affymetrix, США). Статистическую обработку данных проводили с использованием пакета прикладных программ Statistica 8.0 (StatSoft Inc., США).<bold>Результаты. </bold>Наличие объективного ответа наблюдалось при отсутствии в опухоли амплификаций в регионе 20q11.22 (<italic>р </italic>= 0,003) и при наличии амплификаций в локусе 16p13.2 (<italic>р </italic>= 0,027) в опухоли до лечения. В опухоли после НХТ возникновение гематогенного метастазирования наблюдалось при большем количестве амплификаций в локусе 20q13.33 (<italic>р </italic>= 0,002).<bold>Заключение. </bold>Выявлены потенциальные предиктивные CNA-маркеры объективного ответа на лечение и прогностические CNA-маркеры возникновения гематогенного метастазирования при применении таксансодержащих схем неоадъювантной химиотерапии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>tumor CNA landscape</kwd><kwd>taxane-containing scheme</kwd><kwd>neoadjuvant chemotherapy</kwd><kwd>copy number aberration</kwd><kwd>outcome prediction</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>CNA-ландшафт опухоли</kwd><kwd>таксансодержащая схема</kwd><kwd>неоадъювантная химиотерапия</kwd><kwd>аберрация числа копий</kwd><kwd>прогнозирование исхода</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The work was carried out with the financial support of the Russian Science Foundation (grant No. 22-25-00499).</funding-statement><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда (грант № 22-25-00499).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Rašić A., Sofić A., Bešlija S. et al. 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