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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">medalphabet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский алфавит</journal-title><trans-title-group xml:lang="en"><trans-title>Medical alphabet</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2078-5631</issn><issn pub-type="epub">2949-2807</issn><publisher><publisher-name>ООО «Альфмед»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33667/2078-5631-2021-31-38-43</article-id><article-id custom-type="elpub" pub-id-type="custom">medalphabet-2316</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Неоадъювантная химиотерапия HER2-позитивного рака молочной железы с применением дозоуплотненных режимов и двойной анти-HER2-блокады пертузумабом и трастузумабом (предварительные результаты)</article-title><trans-title-group xml:lang="en"><trans-title>Neoadjuvant chemotherapy for HER2-positive breast cancer using dose-consolidated regimens and dual anti-HER2 blockade with pertuzumab and trastuzumab (preliminary results)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4763-7992</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коваленко</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalenko</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коваленко Елена Игоревна, к.м.н., с.н.с. отделения</p><p>Москва</p></bio><bio xml:lang="en"><p>Kovalenko Elena I., PhD Med, senior researcher at Dept of Chemotherapy No. 1</p><p>Moscow</p></bio><email xlink:type="simple">eikovalenko@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/0000-0001-7728-9533</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Артамонова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Artamonova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артамонова Елена Владимировна, д.м.н., зав. отделением1, проф. кафедры онкологии2, зав. кафедрой онкологии и торакальной хирургии3</p><p>Москва</p></bio><bio xml:lang="en"><p>Artamonova Elena V., DM Sci (habil.), head of Dept of Chemotherapy No. 1, professor at Dept of Oncology2, head of Dept of Oncology and Thoracic Surgery3</p><p>Moscow</p></bio><email xlink:type="simple">artamonovae@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4108-439X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жуликов</surname><given-names>Я. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhulikov</surname><given-names>Ya. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жуликов Ярослав Андреевич, врач</p><p>Москва</p></bio><bio xml:lang="en"><p>Zhulikov Yaroslav A., physician</p><p>Moscow</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/0000-0002-3770-5173</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хорошилов</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khoroshilov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хорошилов Максим Викторович, аспирант отделения</p><p>Москва</p></bio><bio xml:lang="en"><p>Khoroshilov Maxim V., post-graduate student of Dept of Chemotherapy No. 1</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Отделение химиотерапии № 1 ФГБУ «Российский онкологический научный центр имени Н.Н. Блохина» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Oncological Scientific Centre n.a. N.N. Blokhin</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Отделение химиотерапии № 1 ФГБУ «Российский онкологический научный центр имени Н.Н. Блохина» Минздрава России; ФГАОУ ВО «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова» Минздрава России; ГБУЗ МО «Московский областной научно-исследовательский клинический институт имени М.Ф. Владимирского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Oncological Scientific Centre n.a. N.N. Blokhin;Russian National Research Medical University n.a. N.I. Pirogov; Moscow Regional Research Clinical Institute n.a. M. F. Vladimirsky</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>07</day><month>12</month><year>2021</year></pub-date><volume>1</volume><issue>31</issue><issue-title>«Диагностика и онкотерапия» (3)</issue-title><fpage>38</fpage><lpage>43</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коваленко Е.И., Артамонова Е.В., Жуликов Я.А., Хорошилов М.В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Коваленко Е.И., Артамонова Е.В., Жуликов Я.А., Хорошилов М.В.</copyright-holder><copyright-holder xml:lang="en">Kovalenko E.I., Artamonova E.V., Zhulikov Y.A., Khoroshilov M.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://www.med-alphabet.com/jour/article/view/2316">https://www.med-alphabet.com/jour/article/view/2316</self-uri><abstract><p>Основной целью проведения неоадъювантной ХТ (НАХТ) при агрессивных подтипах рака молочной железы (РМЖ) (тройном-негативном, HER2-позитивном) является достижение полного патоморфоза, так как он ассоциируется со значительным снижением вероятности рецидива и смерти. В настоящее время стандартным подходом при HER2+ РМЖ II–III стадии является проведение НАХТ с включением двойной анти-HER2-блокады, так как это значимо повышает частоту полных морфологических регрессий. На сегодняшний день остается неясным, влияет ли интенсификация современных антрациклин-таксансодержащих режимов неоадъювантной терапии на частоту полных патоморфологических регрессий при различных подтипах РМЖ, в том числе HER2-позитивном при условии применения двойной анти-HER2-блокады.</p><p>Целью нашего проспективного наблюдательного исследования из ежедневной клинической практики явилась оценка эффективности (по системе RCB и частоте полного патоморфоза) и переносимости дозоуплотненных режимов НАХТ при HER2-положительном РМЖ II–III стадии в условиях двойной анти-HER2-блокады (пертузумаб + трастузумаб).</p><sec><title>Материалы и методы</title><p>Материалы и методы. В исследование включено 86 пациенток, средний возраст 45 лет (26–74 года), в 96,5% случаев морфологически опухоль была представлена инвазивным раком неспецифического типа, в 53,5% опухоли имели люминальный B HER2-положительный фенотип, в 46,5% – нелюминальный HER2+. Большинство (67,4%) пациенток имели местнораспространенный неоперабельный РМЖ, в 80,2% случаев определялось метастатическое поражение регионарных лимфатических узлов. НАХТ включала антрациклины и таксаны: четыре курса АС в дозоуплотненном режиме (раз в 2 недели), далее четыре курса доцетаксела 75 мг/м2 раз в 3 недели + трастузумаб + пертузумаб.</p></sec><sec><title>Результаты</title><p>Результаты. Частота полных морфологических регрессий (pCR = RCB 0) во всей группе составила 54,7 % (47/86), при местнораспространенном РМЖ– 55,9%, при операбельном– 51,9%. При люминальном HER2+-подтипе частота полных морфологических регрессий была ниже, чем при нелюминальном – 43,5 против 67,5%, однако различия статистически недостоверны (р = 0,09). Частота RCB0–I при ЭР+ HER2+-подтипе составила 60,9%, при ЭР-HER2+ – 80%.</p></sec><sec><title>Выводы</title><p>Выводы. В нашем исследовании впервые оценена эффективность дозоуплотненной НАХТ при HER2+-РМЖ, показано, что частота полного патоморфоза и RCB0–I соответствуют таковым при стандартных антрациклин-таксансодержащих режимах. В условиях применения двойной анти-HER2-блокады (пертузумаб + трастузумаб) антрациклиновый этап, скорее всего, не нуждается в эскалации, так как это не приводит к увеличению частоты полных патоморфологических регрессий.</p></sec></abstract><trans-abstract xml:lang="en"><p>The main goal of neoadjuvant chemotherapy (NACT) in aggressive breast cancer (BC) subtypes (triple-negative, HER2-positive) is to achieve complete pathological response (pCR), since it is associated with a significant decrease in the likelihood of recurrence and death. Currently, the standard approach for HER2+ BC stage II–III is NACT with the inclusion of a double anti-HER2 blockade, since this significantly increases the frequency of pCR. To date, it remains unclear whether the intensification of modern anthracycline-taxane-containing regimens of NACT affects the incidence of pCR in different BC subtypes, including HER2-positive, provided that a double anti-HER2 blockade is used.</p><p>The aim of our prospective observational study from daily clinical practice was to assess the efficacy (according to the RCB system and the frequency of pCR) and tolerability of dose-dense NACT in stage II–III HER2-positive BC.</p><sec><title>Materials and methods</title><p>Materials and methods. The study included 86 patients, mean age 45 years (26–74 years), in 96.5% of cases, the tumor was represented morphologically by invasive cancer of a nonspecific type, in 53.5% of the tumors had a positive luminal B HER2 phenotype, in 46.5% – non-luminal HER2+. The majority of patients (67.4%) had locally advanced inoperable breast cancer; in 80.2% of cases, metastatic lesions of regional lymph nodes were determined. NACT included anthracyclines and taxanes: four cycles of AC in a dose-dense regimen (once every 2 weeks), then four cycles of docetaxel 75 mg/m2 once every 3 weeks + trastuzumab + pertuzumab.</p></sec><sec><title>Results</title><p>Results. The frequency of pCR = RCB0 in the entire group was 54.7% (47/86), in locally advanced breast cancer – 55.9%, in operable breast cancer – 51.9%. In the luminal HER2+ subtype, the frequency of pCR was lower than in the non-luminal HER2+ subtype – 43.5% vs 67.5%, however, the differences were statistically insignificant (p = 0.09). The frequency of RCB0–I in ER+ HER2+ subtype was 60.9%, as in ER-HER2+ – 80%. Conclusions. In our study, for the first time, the efficacy of dose-dense NACT in HER2+ breast cancer was assessed; it was shown that the frequency of pCR and RCB0–I correspond to those in standard anthracycline-taxane-containing regimens. In the context of the use of double anti-HER2 blockade, the anthracycline stage, most likely, does not need to be escalated, since this does not lead to an increase in the frequency of complete pathomorphological regressions.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>HER2-позитивный</kwd><kwd>неоадъювантная химиотерапия</kwd><kwd>дозоуплотненные режимы</kwd><kwd>эффективность</kwd><kwd>переносимость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>HER2-positive</kwd><kwd>neoadjuvant chemotherapy</kwd><kwd>dose-dense regimens</kwd><kwd>efficacy</kwd><kwd>tolerance</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">Wolff A.C., Hammond M.E.H., Allison K.H., et al. 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