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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">ssmu</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень сибирской медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Siberian Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-0363</issn><issn pub-type="epub">1819-3684</issn><publisher><publisher-name>Siberian State Medical University, the Ministry of Healthcare of the Russian Federation</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20538/1682-0363-2020-1-13-20</article-id><article-id custom-type="elpub" pub-id-type="custom">ssmu-2675</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 СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL PAPERS</subject></subj-group></article-categories><title-group><article-title>Роль рецептора эпидермального фактора роста EGFR в эффективности неоадъювантной химиотерапии у больных тройным негативным раком молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>The role of epidermal growth factor receptor (EGFR) in the efficacy of neoadjuvant chemotherapy in triple-negative breast cancer patients</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0562-3878</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бабышкина</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Babyshkina</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. мед. наук, ст. науч. сотрудник, лаборатория молекулярной онкологии и иммунологииРоссия, 634050, г. Томск, пер. Кооперативный, 5</p><p>Россия, 634050, г. Томск, пр. Ленина, 36</p></bio><bio xml:lang="en"><p>5, Kooperativny Str., Tomsk, 634050, Russian Federation</p><p>36, Lenin Av., Tomsk, 634050, Russian Federation</p></bio><email xlink:type="simple">nbabyshkina@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3009-2404</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дронова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dronova</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, лаборатория молекулярной онкологии и иммунологиРоссия, 634050, г. Томск, пер. Кооперативный, 5</p><p>Россия, 634050, г. Томск, пр. Ленина, 36</p></bio><bio xml:lang="en"><p>5, Kooperativny Str., Tomsk, 634050, Russian Federation</p><p>36, Lenin Av., Tomsk, 634050, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3698-8455</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Замбалова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zambalova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, НИ ТГУ; мл. науч. сотрудник, лаборатория биохимии опухолейРоссия, 634050, г. Томск, пер. Кооперативный, 5</p><p> </p></bio><bio xml:lang="en"><p>5, Kooperativny Str., Tomsk, 634050, Russian Federation</p><p> </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9429-9813</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Завьялова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zavyalova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. кафедрой патологической анатомииРоссия, 634050, г. Томск, пер. Кооперативный, 5</p><p>Россия, 634050, г. Томск, пр. Ленина, 36</p></bio><bio xml:lang="en"><p>5, Kooperativny Str., Tomsk, 634050, Russian Federation</p><p>36, Lenin Av., Tomsk, 634050, Russian Federation</p><p>2, Moscow Trakt, Tomsk, 634050, Russian Federation</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4382-5697</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Слонимская</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Slonimskaya</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. отделением общей онкологииРоссия, 634050, г. Томск, пер. Кооперативный, 5</p><p>Россия, 634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>5, Kooperativny Str., Tomsk, 634050, Russian Federation</p><p>2, Moscow Trakt, Tomsk, 634050, Russian Federation</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1526-9013</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чердынцева</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherdyntseva</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р биол. наук, профессор, член-корреспондент РАН, зав. лабораторией молекулярной онкологии и иммунологииРоссия, 634050, г. Томск, пер. Кооперативный, 5</p><p>Россия, 634050, г. Томск, пр. Ленина, 36</p></bio><bio xml:lang="en"><p>5, Kooperativny Str., Tomsk, 634050, Russian Federation</p><p>36, Lenin Av., Tomsk, 634050, Russian Federation</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 (НИИ) онкологии, Томский национальный исследовательский медицинский центр (НИМЦ) Российской академии наук;&#13;
Национальный исследовательский Томский государственный университет (НИ ТГУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center (NRMC) of Russian Academy of Sciences;&#13;
National Research Tomsk State University (NR TSU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Научно-исследовательский институт (НИИ) онкологии, Томский национальный исследовательский медицинский центр (НИМЦ) Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center (NRMC) of Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Научно-исследовательский институт (НИИ) онкологии, Томский национальный исследовательский медицинский центр (НИМЦ) Российской академии наук;&#13;
Национальный исследовательский Томский государственный университет (НИ ТГУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center (NRMC) of Russian Academy of Sciences;&#13;
National Research Tomsk State University (NR TSU);&#13;
Siberian State Medical University (SSMU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Научно-исследовательский институт (НИИ) онкологии, Томский национальный исследовательский медицинский центр (НИМЦ) Российской академии наук;&#13;
Сибирский государственный медицинский университет (СибГМУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center (NRMC) of Russian Academy of Sciences;&#13;
Siberian State Medical University (SSMU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>16</day><month>04</month><year>2020</year></pub-date><volume>19</volume><issue>1</issue><fpage>13</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бабышкина Н.Н., Дронова Т.А., Замбалова Е.А., Завьялова М.В., Слонимская Е.М., Чердынцева Н.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Бабышкина Н.Н., Дронова Т.А., Замбалова Е.А., Завьялова М.В., Слонимская Е.М., Чердынцева Н.В.</copyright-holder><copyright-holder xml:lang="en">Babyshkina N.N., Dronova T.A., Zambalova E.A., Zavyalova M.V., Slonimskaya E.M., Cherdyntseva N.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://bulletin.ssmu.ru/jour/article/view/2675">https://bulletin.ssmu.ru/jour/article/view/2675</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Выявление предсказательных молекулярных маркеров тройного негативного рака молочной железы позволит оценить эффективность неоадъювантной химиотерапии (НАХТ) и определить оптимальные подходы к прогнозированию течения заболевания.</p></sec><sec><title>Цель исследования</title><p>Цель исследования. Изучить взаимосвязь экспрессии рецептора эпидермального фактора роста EGFR и полиморфных вариантов его гена с эффективностью неоадъювантной химиотерапии у больных тройным негативным раком молочной железы.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В исследование включены 70 пациенток с тройным негативным раком молочной железы, получавших 2–4 курса НАХТ по схеме FAC или CAX. Оценка эффективности НАХТ проводилась по шкале RECIST. Уровень экспрессии EGFR в опухоли до и после НАХТ оценивался иммуногистохимическим методом. Анализ полиморфных вариантов гена EGFR в локусах rs2227983 и rs1468727 проведен с помощью полимеразной цепной реакции в режиме реального времени.</p></sec><sec><title>Результаты</title><p>Результаты. Выявлено, что в процессе НАХТ уровень экспрессии EGFR в опухоли значимо снижается (p = 0,000). Показано, что достижение объективного клинического и полного патоморфологического ответа опухоли ассоциировано с низким уровнем экспрессии EGFR (p = 0,007 и p = 0,000 соответственно). Отсутствие эффективного ответа на НАХТ у больных тройным негативным раком молочной железы связано с носительством мутантных генотипов EGFRCC в локусе rs1468727 (p = 0,042). Кроме того, среди пациентов, несущих мутантный вариант гена EGFRCC, чаще встречаются опухоли с высокой экспрессией EGFR по сравнению с больными, имеющими дикий вариант EGFRTT (p = 0,047).</p></sec><sec><title>Заключение</title><p>Заключение. Уровень экспрессии EGFR в опухоли и полиморфные варианты его гена в локусе rs1468727 могут рассматриваться в качестве потенциальных молекулярных маркеров с предсказательной значимостью в отношении эффективности НАХТ у больных тройным негативным раком молочной железы.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Identification of predictive molecular markers of triple-negative breast cancer (TNBC) will enable the evaluation of the efficacy of neoadjuvant chemotherapy (NACT) and define optimum approaches for the prognosis of the disease course in TNBC patients.</p><p>The aim of the study was to examine the correlation between the expression of the epidermal growth factor receptor (EGFR), its gene’s polymorphic variants and the neoadjuvant chemotherapy (NACT) efficacy in triple-negative breast cancer (TNBC) patients.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study included 70 patients with triple-negative breast cancer, who had received 2-4 cycles of FAC and CAX regimens. The efficacy of the neoadjuvant chemotherapy was assessed according to the RECIST scale. The EGFR expression level in tumors before and after the NACT was evaluated with the help of immunohistochemistry. Genotypes for EGFR (rs2227983 and rs1468727) were detected by a real-time PCR.</p></sec><sec><title>Results</title><p>Results. It was found that NCT significantly decreases the EGFR expression level in the tumor (p = 0.000). The research associates the objective clinical response as well as the pathological complete response with the low EGFR expression level (p = 0.007 and p = 0.000 respectively). Patients carrying the EGFRCC mutant genotype of rs1468727 did not achieve a pathological complete response (p = 0.042). In addition, patients with EGFRCC mutant genotype are more likely to have tumors with a high EGFR expression compared to EGFRTT wild-type genotype patients (p = 0.047).</p></sec><sec><title>Conclusion</title><p>Conclusion. The EGFR expression level in tumor tissue and the polymorphic variants of its gene in the rs1468727 locus can be considered as potential molecular markers with predictive significance in relation to the NACT efficacy in triple-negative breast cancer patients. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>тройной негативный рак молочной железы</kwd><kwd>неоадъювантная химиотерапия</kwd><kwd>рецептор эпидермального фактора роста EGFR</kwd><kwd>полиморфизм генов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>triple-negative breast cancer</kwd><kwd>neoadjuvant chemotherapy</kwd><kwd>epidermal growth factor receptor&#13;
(EGFR)</kwd><kwd>gene polymorphisms</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке гранта РНФ № 19-75- 30016 «Новая технология прогнозирования и профилактики отдаленного метастазирования на основе детекции циркулирующих метастаз-инициирующих и нишеобразующих клеток и их специфических мишеней».</funding-statement><funding-statement xml:lang="en">The research was conducted under financial support from the Russian Science Foundation (RSF), Grant No. 19-75-30016 “New strategy for the prediction and prevention of distant metastasis based on the detection of circulating metastasis-initiating and niche-forming cells and their specific targets”.</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">De Ruijter T.C., Veeck J., de Hoon J.P., van Engeland M., Tjan-Heijnen V.C. 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