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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Pharmateca</journal-id><journal-title-group><journal-title xml:lang="en">Pharmateca</journal-title><trans-title-group xml:lang="ru"><trans-title>Фарматека</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2073-4034</issn><issn publication-format="electronic">2414-9128</issn><publisher><publisher-name xml:lang="en">Bionika Media</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">312207</article-id><article-id pub-id-type="doi">10.18565/pharmateca.2019.7.50-56</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Predictive and prognostic significance of stemness gene amplifications in the breast tumor in patients who received neoadjuvant chemotherapy</article-title><trans-title-group xml:lang="ru"><trans-title>Предиктивная и прогностическая значимость амплификаций генов стволовости в опухоли молочной железы больных, получавших неоадъювантную химиотерапию</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kazantseva</surname><given-names>Polina V.</given-names></name><name xml:lang="ru"><surname>Казанцева</surname><given-names>П. В</given-names></name></name-alternatives><bio xml:lang="en"><p>Scientific Research Institute of Oncology; PhD, Researcher at the Department of General Oncology, Scientific Research</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии; к.м.н., науч. сотр. отделения общей онкологии</p></bio><email>polydoctor@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Slonimskaya</surname><given-names>E. M</given-names></name><name xml:lang="ru"><surname>Слонимская</surname><given-names>Е. М</given-names></name></name-alternatives><bio xml:lang="en"><p>Scientific Research Institute of Oncology</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><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><bio xml:lang="en"><p>Scientific Research Institute of Oncology</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><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><bio xml:lang="en"><p>Scientific Research Institute of Oncology</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Doroshenko</surname><given-names>A. V</given-names></name><name xml:lang="ru"><surname>Дорошенко</surname><given-names>А. В</given-names></name></name-alternatives><bio xml:lang="en"><p>Scientific Research Institute of Oncology</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tarabanovskaya</surname><given-names>N. A</given-names></name><name xml:lang="ru"><surname>Тарабановская</surname><given-names>Н. А</given-names></name></name-alternatives><bio xml:lang="en"><p>Scientific Research Institute of Oncology</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><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><bio xml:lang="en"><p>Scientific Research Institute of Oncology</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tomsk National Research Medical Center of RAS</institution></aff><aff><institution xml:lang="ru">Томский национальный исследовательский медицинский центр РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Siberian State Medical University</institution></aff><aff><institution xml:lang="ru">Сибирский Государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">National Research Tomsk State University</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Томский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-07-15" publication-format="electronic"><day>15</day><month>07</month><year>2019</year></pub-date><volume>26</volume><issue>7</issue><issue-title xml:lang="en">VOL 26, NO7 (2019)</issue-title><issue-title xml:lang="ru">ТОМ 26, №7 (2019)</issue-title><fpage>50</fpage><lpage>56</lpage><history><date date-type="received" iso-8601-date="2023-03-03"><day>03</day><month>03</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Bionika Media</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, ООО «Бионика Медиа»</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Bionika Media</copyright-holder><copyright-holder xml:lang="ru">ООО «Бионика Медиа»</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2073-4034/article/view/312207">https://journals.eco-vector.com/2073-4034/article/view/312207</self-uri><abstract xml:lang="en"><p>Background. There is evidence that neoadjuvant chemotherapy (NACT) in some cases stimulates metastasis of breast cancer (BC), and the increased aggressiveness and metastasis of the tumor under the action of chemotherapy are associated with stimulation of tumor stem cells, the activity of which is determined by increased expression of stemness genes (SG). New tumor markers associated with a high risk of disease progression against the background of the treatment are required, and it has a greatest importance for patients receiving NACT in the preoperative period. Objective. Assessment of the immediate effectiveness of NACT and metastatic-free survival in patients with breast cancer depending on the presence of amplifications of regions of SG localization. in the primary breast tumor. Methods. Evaluation of the predictive and prognostic significance of the presence of amplifications of the SG loci 3q, 5p, 6p, 7q, 8q, 9p, 9q, 10p, 10q21.1, 12p, 13q, 16p, 18q, 19p in a breast tumor was carried out before treatment in 103 patients receiving NACT. Depending on the number of amplifications in the tumor, the patients were divided into two groups: with the presence of ≥2 amplifications in the tumor and with or without a single stemness gene amplification. SG amplification was determined using a high density CytoScanTM HD Array, Affymetrix (USA). Results. It has been established that SG amplifications in the primary tumor do not have predictive significance. The main result of the study was the identification of their prognostic significance. It was shown that the achievement of both complete and partial regression of neoplasm against NACT in breast cancer patients with ≥2 amplifications of any regions of SG localization in primary tumor tissue leads to a significant increase in metastatic-free survival (Log Rank [Mantel-Cox] p=0,025). At the same time, even a good response to NACT does not lead to an increase in the survival rate of patients with 0-1 amplification of SG. Conclusion. Thus, the results show that only patients with ≥2 SG amplifications have benefit from the treatment with NACT in terms of increasing survival, and these patients should receive NACT.</p></abstract><trans-abstract xml:lang="ru"><p>Актуальность. Имеются данные, согласно которым неоадъювантная химиотерапия (НАХТ) в некоторых случаях стимулирует метастазирование рака молочной железы (РМЖ), причем повышенную агрессивность и метастазирование опухоли под действием химеотерапии связывают со стимуляцией опухолевых стволовых клеток, активность которых определяется повышенной экспрессией генов стволовости (ГС). Необходимы новые опухолевые маркеры, ассоциирующиеся с высоким риском прогрессирования заболевания на фоне проводимого лечения, что имеет наибольшую значимость для пациентов, получающих НАХТ в предоперационном периоде. Цель исследования. Оценка непосредственной эффективности НАХТ и безметастатической выживаемости у больных РМЖ в зависимости от наличия в первичной опухоли молочной железы амплификаций регионов локализации ГС. Методы. Ста трем больным, получавшим НАХТ, проведено исследование предиктивной и прогностической значимости наличия амплификаций локусов ГС 3q,5p, 6p, 7q, 8q, 9p, 9q, 10p,10q21.1, 12р, 13q, 16p, 18q, 19p. в опухоли молочной железы до лечения. В зависимости от числа амплификаций в опухоли пациентки были разделены на две группы: с наличием в опухоли ≥2 амплификаций и с единственной амплификацией генов стволовости или без нее. Амплификации ГС определяли при помощи микроматрицы высокой плотности фирмы Affymetrix (США) CytoScan™ HD Array. Результаты. Установлено, что амплификации ГС в первичной опухоли не обладают предсказательной значимостью. Основным результатом исследования стало опреление их прогностической значимости. Было показано, что достижение как полного, так и частичного регресса новообразования на фоне НАХТ у больных РМЖ, в первичной опухолевой ткани которых идентифицировано ≥2 амплификаций любых регионов локализации ГС, приводит к значительному повышению безметастатической выживаемости (Log Rank [Mantel-Cox] p=0,025). В то же время даже хороший ответ на НАХТ не приводит к увеличению выживаемости больных с 0-1 амплификацией ГС. Заключение. Таким образом, полученные результаты свидетельствуют, что пользу от применения НАХТ в плане увеличения выживаемости имеют только больные, в опухоли которых до лечения определяется ≥2 амплификаций ГС, и этим пациенткам целесообразно назначение НАХТ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>prognostic criteria</kwd><kwd>stemness gene amplification</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>прогностические критерии</kwd><kwd>амплификация генов стволовости</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Семиглазов В.Ф. Многоликая биология рака молочной железы: поиски адекватного лечения. Злокачественные опухоли. 2016;3(19):5-10.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Schott A.F., Hayes D.F. Defining the benefits of neoadjuvant chemotherapy for breast cancer. Am Soc Clin Oncol. 2012:30(15):1747-49. 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