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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">cardio</journal-id><journal-title-group><journal-title xml:lang="ru">Кардиология</journal-title><trans-title-group xml:lang="en"><trans-title>Kardiologiia</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0022-9040</issn><issn pub-type="epub">2412-5660</issn><publisher><publisher-name>Kardiomag</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18087/cardio.2025.6.n2933</article-id><article-id custom-type="elpub" pub-id-type="custom">cardio-2933</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>RESEARCH ARTICLES</subject></subj-group></article-categories><title-group><article-title>Обобщенная роль сывороточных маркеров гемодинамической перегрузки или некроза миокарда и данных спекл-трекинг-эхокардиографии в выявлении ранней скрытой кардиотоксичности, вызванной химиотерапией, у женщин, больных раком молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>The Joint Role of Serum Markers of Congestion or Myocardial Necrosis And Speckle Tracking Echocardiography in The Detection of Early Subtle Chemotherapy-Induced Cardiotoxicity in Women With Breast Cancer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-8587-705X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Райимбек уулу</surname><given-names>Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Raiimbek uulu</surname><given-names>N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-кардиолог</p><p> </p></bio><bio xml:lang="en"><p>cardiologist</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5356-1886</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Першуков</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pershukov</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>профессор кафедры терапии, кардиолог, сердечно-сосудистый хирург, врач РЭВДЛ</p></bio><bio xml:lang="en"><p>chief researcher, professor, DSc, MD, .</p></bio><email xlink:type="simple">pershukov@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2110-0970</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шульженко</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shulzhenko</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>зав.отделением ГБУЗ НИИ Краевая клиническая больница № 1 имени профессора С.В.Очаповского; зав.кафедрой ФГБОУ ВО Кубанский ГМУ Минздрава России</p><p> </p></bio><bio xml:lang="en"><p>professor, Dr. Sci. (Med.), Head of the Pulmonology Unit, Scientific Research Institute – Ochapovsky Regional Clinical Hospital No. 1; Head of the Pulmonology Department, Faculty of Continuing Professional Development and Retraining, Kuban State Medical University, Krasnodar</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0491-5334</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акбалаева</surname><given-names>Б. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Akbalaeva</surname><given-names>B. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор философии (PhD), врач-кардиолог</p><p> </p></bio><bio xml:lang="en"><p>cardiologist</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4251-0327</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Батыралиев</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Batyraliev</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Президент Ассоциации медицинских работников КР, профессор, доктор медицинских наук</p><p> </p></bio><bio xml:lang="en"><p>chief researcher, professor, DSc, MD .</p></bio><email xlink:type="simple">talantbekb@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-5163-4747</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гурович</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gurovich</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ассистент кафедры</p></bio><bio xml:lang="en"><p>cardiologist</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0175-0343</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калматов</surname><given-names>Р. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalmatov</surname><given-names>R. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор декан ММФ</p></bio><bio xml:lang="en"><p>professor, DSc, Dean of IMF</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1128-8188</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маматова</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamatova</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., зав.кафедрой ВБ1 ММФ</p></bio><bio xml:lang="en"><p>Head of Internal Diseases Chair</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0579-8109</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джайнакбаев</surname><given-names>Н. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Jainakbayev</surname><given-names>N. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ректор Университета, д.м.н., профессор</p><p> </p></bio><bio xml:lang="en"><p>Rector, Professor, DSc</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9338-9518</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сейдалин</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Seidalin</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор, Проректор НУО «Казахстанско-Российский медицинский университет»</p></bio><bio xml:lang="en"><p>Prorector, Professor, DSc</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5318-0995</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маншарипова</surname><given-names>А. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Mansharipova</surname><given-names>A. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор, врач-кардиолог, Ученый секретарь НУО «Казахстанско-Российский медицинский университет»</p></bio><bio xml:lang="en"><p>Scienific Secretary of KRMU, Professor, DSc</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-3406-1146</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Квасова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kvasova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>заместитель главного врача, врач-онколог</p></bio><bio xml:lang="en"><p>oncologist; head of outpatient dep-t</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-7"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7080-8665</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Виноградская</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vinogradskaia</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач функциональной диагностики</p></bio><bio xml:lang="en"><p>sonographist</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5622-3316</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карбен</surname><given-names>З. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Karben</surname><given-names>Z. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор, врач-кардиолог, врач функциональной диагностики</p></bio><bio xml:lang="en"><p>professor, DSc</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4143-8899</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фетцер</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fettser</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>заведующий отделением, к.м.н., врач РЭВДЛ, врач ССХ</p></bio><bio xml:lang="en"><p>Head of Cath Lab Dep-t</p></bio><email xlink:type="simple">fettser@gmail.com</email><xref ref-type="aff" rid="aff-10"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1100-8270</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рамазанов</surname><given-names>Д. М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Ramazanov</surname><given-names>J. M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., врач-кардиолог</p></bio><bio xml:lang="en"><p>cardiologist</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-11"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5492-7552</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузнецова</surname><given-names>Т. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsova</surname><given-names>T. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-кардиолог</p></bio><bio xml:lang="en"><p>cardiologist</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-12"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7473-5483</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иваненкова</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanenkova</surname><given-names>E. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., врач-кардиолог</p></bio><bio xml:lang="en"><p>cardiologist</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-12"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7857-3480</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рахальская</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Rakhalskaya</surname><given-names>R. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докторант PhD</p></bio><bio xml:lang="en"><p>PhD doctorant</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-2148-6466</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Камалиева</surname><given-names>М. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Kamaliyeva</surname><given-names>M. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докторант PhD</p></bio><bio xml:lang="en"><p>PhD doctorant</p></bio><email xlink:type="simple">cardio.ru@gmail.com</email><xref ref-type="aff" rid="aff-6"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ВУЗ «Ошский государственный университет», Ош</institution><country>Кыргызстан</country></aff><aff xml:lang="en"><institution>Osh State University, Osh</institution><country>Kyrgyzstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ВУЗ «Ошский государственный университет», Ош;&#13;
НУО «Казахстанско-Российский медицинский университет», Алматы;&#13;
БУЗ «Бобровская районная больница» МЗ Воронежской области, Бобров</institution><country>Кыргызстан</country></aff><aff xml:lang="en"><institution>Osh State University, Osh; &#13;
Kazakhstan-Russian Medical University, Almaty;&#13;
Bobrov District Hospital, Bobrov</institution><country>Kyrgyzstan</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГБУЗ «НИИ Краевая клиническая больница № 1 имени профессора С. В. Очаповского», Краснодар;&#13;
ФГБОУ ВО «Кубанский государственный медицинский университет» Минздрава РФ, Краснодар</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ochapovsky Research Institute Regional Clinical Hospital #1, Krasnodar;&#13;
Kuban State Medical University, Krasnodar</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Салымбеков Университет, Бишкек</institution><country>Кыргызстан</country></aff><aff xml:lang="en"><institution>Salymbekov University, Bishkek</institution><country>Kyrgyzstan</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>ФГБОУ ВО «Воронежский государственный медицинский университет имени Н. Н. Бурденко» Минздрава РФ, Воронеж</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Burdenko Voronezh State Medical University, Voronezh</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>НУО «Казахстанско-Российский медицинский университет», Алматы</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Kazakhstan-Russian Medical University, Almaty</institution><country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru"><institution>БУЗ «Бобровская районная больница» МЗ Воронежской области, Бобров, Воронежская область</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bobrov District Hospital, Bobrov, Voronezh Region</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-8"><aff xml:lang="ru"><institution>Клиника «Город Здоровья», Воронеж</institution><country>Россия</country></aff><aff xml:lang="en"><institution>City of Health Clinic, Voronezh</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-9"><aff xml:lang="ru"><institution>Университет Санко, Шехиткамиль, Газиантеп</institution><country>Турция</country></aff><aff xml:lang="en"><institution>Sanko University, Şehitkâmil, Gaziantep</institution><country>Turkey</country></aff></aff-alternatives><aff-alternatives id="aff-10"><aff xml:lang="ru"><institution>ГБУЗ «Городская клиническая больница № 52 ДЗМ г. Москвы», Москва</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Municpal Clinical Hospital #52, Moscow</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-11"><aff xml:lang="ru"><institution>Центральная больница нефтяников, Баку</institution><country>Азербайджан</country></aff><aff xml:lang="en"><institution>Central Hospital of Oil Workers, Baku</institution><country>Azerbaijan</country></aff></aff-alternatives><aff-alternatives id="aff-12"><aff xml:lang="ru"><institution>БУЗ ВО «Воронежская областная клиническая больница № 1», Воронеж</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh Regional Clinical Hospital #1, Voronezh</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>07</month><year>2025</year></pub-date><volume>65</volume><issue>6</issue><fpage>34</fpage><lpage>43</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kardiomag, 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Kardiomag</copyright-holder><copyright-holder xml:lang="en">Kardiomag</copyright-holder><license xlink:href="https://cardio.elpub.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://cardio.elpub.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://cardio.elpub.ru/jour/article/view/2933">https://cardio.elpub.ru/jour/article/view/2933</self-uri><abstract><p>Цель    Проследить динамику биомаркеров во время химиотерапии, химиотаргетной и монотаргетной терапии у больных HER2‑позитивным раком молочной железы (РМЖ), проанализировать сроки появления этих изменений, сопоставить ранние биохимические и эхокардиографические критерии, установить наилучшее время для оценки скрытой субклинической сердечной дисфункции.</p><p>Материал и методы            Больные РМЖ 229 женщин (57±11 лет), лечившихся последовательно антрациклинами, комбинацией доцетаксела с трастузумабом и монотерапией трастузумабом, обследованы в течение трех блоков терапии РМЖ до развития клинической кардиотоксичности. Проанализирована динамика высокочувствительного кардиоспецифичного тропонина I, N-концевого предшественника мозгового натрийуретического пептида (NT-proBNP), глобальной продольной деформации левого желудочка (GLS LV) и фракции выброса (ФВ) левого желудочка – ЛЖ (до 12 эхокардиограмм с определением спеклов / до 12 лабораторных тестов). Клиническая кардиотоксичность определялась как симптомное снижение ФВ ЛЖ ≥10 % от исходной, которая составляла 54 % и более.</p><p>Результаты  Клинически значимая кардиотоксичность развилась в 6,3–10,9 % случаев в зависимости от варианта лечения РМЖ. Ранние ее проявления диагностированы уже через 3 нед после начала первого курса химиотерапии. Для терапии РМЖ антрациклинами и химиотаргетной терапии доцетакселом с трастузумабом маркерами последующей клинической кардиотоксичности стали высокочувствительный кардиоспецифичный тропонин I, NT-proBNP и GLS LV. При монотерапии трастузумабом прогностическое значение имела только GLS LV. Статистически значимых изменений уровня высокочувствительного тропонина I и NT-proBNP не найдено.</p><p>Заключение    Для своевременного выявления клинической кардиотоксичности каждые 3 нед перед следующим курсом терапии РМЖ рекомендуется выполнять лабораторные (высокочувствительный тропонин I, NT-proBNP) и эхокардиографическое (GLS LV) исследования. При этом их чувствительность будет зависеть от варианта терапии РМЖ.</p><p>Ж.</p></abstract><trans-abstract xml:lang="en"><p>Aim     To monitor the dynamics of biomarkers during chemotherapy, targeted chemotherapy and targeted monotherapy in patients with HER2-positive breast cancer (BC); to analyze the emergence timing of these changes; to compare early biochemical and echocardiographic criteria; and to determine the best time for assessing latent subclinical cardiac dysfunction.</p><p>Material and methods            Patients with BC (229 women aged 57±11 years) treated sequentially with anthracyclines, a combination of docetaxel and trastuzumab, and trastuzumab monotherapy were examined during three blocks of BC therapy until the development of clinical cardiotoxicity. Time-related changes in high-sensitivity cardiac troponin I, N-terminal pro-brain natriuretic peptide (NT-proBNP), left ventricular (LV) global longitudinal strain (GLS) and LV ejection fraction (EF) (up to 12 speckle-tracking echocardiograms/up to 12 laboratory tests) were analyzed. Clinical cardiotoxicity was defined as a symptomatic decrease in LV EF ≥10% from the baseline value of 54% or more.</p><p>Results            Clinically significant cardiotoxicity developed in 6.3-10.9% of cases depending on the treatment option for BC. Early manifestations of cardiotoxicity were detected already at 3 weeks after the start of the first course of chemotherapy. For the BC treatment with anthracyclines and targeted chemotherapy with docetaxel and trastuzumab, the markers of clinical cardiotoxicity were high-sensitivity cardiac troponin I, NT-proBNP and GLS LV. For the trastuzumab monotherapy, only GLS LV had a prognostic value. No statistically significant changes in the concentrations of high-sensitivity troponin I and NT-proBNP were found.</p><p>Conclusion      For timely detection of clinical cardiotoxicity, laboratory tests (high-sensitivity troponin I, NT-proBNP) and echocardiography (GLS LV) are recommended to be performed every 3 weeks before the next course of BC therapy. While doing so, their sensitivity will depend on the treatment option for BC.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>N-концевой предшественник мозгового натрийуретического пептида</kwd><kwd>высокочувствительный тропонин I</kwd><kwd>глобальная продольная деформация левого желудочка</kwd><kwd>спекл-трекинг-эхокардиография</kwd><kwd>дисфункция сердца</kwd><kwd>связанная с терапией рака</kwd><kwd>HER2 позитивный рак молочной железы</kwd><kwd>антрациклины</kwd><kwd>доцетаксел</kwd><kwd>трастузумаб</kwd></kwd-group><kwd-group xml:lang="en"><kwd>N-terminal pro-brain natriuretic peptide</kwd><kwd>high-sensitivity troponin I</kwd><kwd>left ventricular global longitudinal strain</kwd><kwd>speckle tracking echocardiography</kwd><kwd>cancer therapy-associated cardiac dysfunction</kwd><kwd>HER2-positive breast cancer</kwd><kwd>anthracyclines</kwd><kwd>docetaxel</kwd><kwd>trastuzumab</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают искреннюю благодарность и уважение коллегам-онкологам, проводившим лечение всех пациенток согласно современным клиническим рекомендациям по терапии рака молочной железы. Финансирование. Внешнее финансирование отсутствует. Конфликт интересов у всех авторов статьи отсутствует.</funding-statement><funding-statement xml:lang="en">The authors express their sincere gratitude and respect to their oncology colleagues who treated all patients according to current clinical guidelines for breast cancer therapy.  Funding. There was no external funding. All authors declare no conflict of interest.</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">Bray F, Laversanne M, Sung H, Ferlay J, Siegel RL, Soerjomataram I et al. Global cancer statistics 2022: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA: A Cancer Journal for Clinicians. 2024;74(3):229–63. DOI: 10.3322/caac.21834</mixed-citation><mixed-citation xml:lang="en">Bray F, Laversanne M, Sung H, Ferlay J, Siegel RL, Soerjomataram I et al. 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