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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">cancersp</journal-id><journal-title-group><journal-title xml:lang="ru">Южно-Российский онкологический журнал/ South Russian Journal of Cancer</journal-title><trans-title-group xml:lang="en"><trans-title>South Russian Journal of Cancer</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2686-9039</issn><publisher><publisher-name>АНО "Перспективы онкологии"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37748/2686-9039-2025-6-3-6</article-id><article-id custom-type="edn" pub-id-type="custom">llbjxl</article-id><article-id custom-type="elpub" pub-id-type="custom">cancersp-347</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 ARTICLES</subject></subj-group></article-categories><title-group><article-title>Экспрессия Ki-67 при трижды негативном раке молочной железы, возрастные особенности</article-title><trans-title-group xml:lang="en"><trans-title>Ki-67 expression in triple-negative breast cancer and its correlation with age</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8447-2600</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демяшкин</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Demyashkin</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Демяшкин Григорий Александрович – д.м.н., заведующий отделом цифровой онкоморфологии, Московский научно-исследовательский онкологический институт им. П. А. Герцена – филиал ФГБУ «Национальный медицинский исследовательский центр радиологии» Министерства здравоохранения Российской Федерации, г. Москва, Российская Федерация; заведующий лабораторией гистологии и иммуногистохимии, ФГБОУ ВО «Первый Московский государственный медицинский университет им. И. М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет), г. Москва, Российская Федерация</p><p>ORCID: <ext-link xlink:href="http://orcid.org/0000-0001-8447-2600" ext-link-type="uri">http://orcid.org/0000-0001-8447-2600</ext-link>, SPIN: 5157-0177, AuthorID: 645433, ResearcherID: ABD-7650-2021, Scopus Author ID: 57200415197</p></bio><bio xml:lang="en"><p>Grigory A. Demyashkin – Dr. Sci. (Med.), MD, Pathologist, Head of the Department of Digital Oncomorphology, P. A. Herzen MNIOI – Branch of the National Medical Research Radiological Center, Moscow, Russian Federation; head of the Laboratory of Histology and Immunohistochemistry, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation</p><p>ORCID: <ext-link xlink:href="http://orcid.org/0000-0001-8447-2600" ext-link-type="uri">http://orcid.org/0000-0001-8447-2600</ext-link>, SPIN: 5157-0177, AuthorID: 645433, Scopus Author ID: 57200415197, Web of Science ResearcherID: ABD-7650-2021</p></bio><email xlink:type="simple">dr.dga@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/0009-0006-3746-3924</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белокопытов</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belokopytov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белокопытов Дмитрий Вячеславович – лаборант-исследователь отдела цифровой онкоморфологии, Московский научно-исследовательский онкологический институт им. П. А. Герцена – филиал ФГБУ «Национальный медицинский исследовательский центр радиологии» Министерства здравоохранения Российской Федерации, г. Москва, Российская Федерация; специалист лаборатории гистологии и иммуногистохимии Института трансляционной медицины и биотехнологии, ФГБОУ ВО «Первый Московский государственный медицинский университет им. И. М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет), г. Москва, Российская Федерация</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0009-0006-3746-3924" ext-link-type="uri">https://orcid.org/0009-0006-3746-3924</ext-link>, SPIN: 9686-3476, AuthorID: 1267929</p></bio><bio xml:lang="en"><p>Dmitriy V. Belokopytov – laboratory researcher at the Department of Digital Oncomorphology, P. A. Herzen MNIOI – Branch of the National Medical Research Radiological Center, Moscow, Russian Federation; Specialist of the Laboratory of Histology and Immunohistochemistry, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0009-0006-3746-3924" ext-link-type="uri">https://orcid.org/0009-0006-3746-3924</ext-link>, SPIN: 9686-3476, AuthorID: 1267929</p></bio><email xlink:type="simple">beldimbur@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/0000-0002-5833-3401</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гузик</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Guzik</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гузик Анастасия Андреевна – соискатель, Московский научно-исследовательский онкологический институт им. П. А. Герцена – филиал ФГБУ «Национальный медицинский исследовательский центр радиологии» Министерства здравоохранения Российской Федерации, г. Москва, Российская Федерация; соискатель лаборатории гистологии и иммуногистохимии Института трансляционной медицины и биотехнологии, ФГБОУ ВО «Первый Московский государственный медицинский университет им. И. М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет), г. Москва, Российская Федерация</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-5833-3401" ext-link-type="uri">https://orcid.org/0000-0002-5833-3401</ext-link>, SPIN: 2544-8240, AuthorID: 1270642</p></bio><bio xml:lang="en"><p>Anastasia A. Guzik – сandidate, P. A. Herzen MNIOI – Branch of the National Medical Research Radiological Center, Moscow, Russian Federation; Specialist of the Laboratory of Histology and Immunohistochemistry, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-5833-3401" ext-link-type="uri">https://orcid.org/0000-0002-5833-3401</ext-link>, SPIN: 2544-8240, AuthorID: 1270642</p></bio><email xlink:type="simple">Doctor.guzik@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский научно-исследовательский онкологический институт им. П. А. Герцена – филиал ФГБУ «Национальный медицинский исследовательский центр радиологии» Министерства здравоохранения Российской Федерации; ФГБОУ ВО «Первый Московский государственный медицинский университет им. И. М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P. A. Herzen MNIOI – Branch of the National Medical Research Radiological Center; I. M. Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>09</day><month>09</month><year>2025</year></pub-date><volume>6</volume><issue>3</issue><fpage>53</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Демяшкин Г.А., Белокопытов Д.В., Гузик А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Демяшкин Г.А., Белокопытов Д.В., Гузик А.А.</copyright-holder><copyright-holder xml:lang="en">Demyashkin G.A., Belokopytov D.V., Guzik A.A.</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.cancersp.com/jour/article/view/347">https://www.cancersp.com/jour/article/view/347</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Проанализировать степень корреляции между уровнем пролиферативной активности атипичных клеток трижды негативного рака молочной железы (РМЖ) и возрастом пациента.</p></sec><sec><title>Пациенты и методы</title><p>Пациенты и методы. В исследование было включено 80 женщин с впервые установленным диагнозом РМЖ, у которых по результатам гистологического и иммуногистохимического исследования с оценкой экспрессии гормональных рецепторов и Ki-67 был установлен трижды негативный суррогатный молекулярно-генетический подтип РМЖ. Статистический анализ выборки проводился с применением программного обеспечения Statistica 13.5.0.17 software (TIBCO Software inc.). Для оценки нормальности распределения признака, применялся критерий Шапиро-Уилка (Shapiro-Wilk). Степень корреляции между признаками оценивалась с применением коэффициента корреляции Кенделла (Kendall tau rank correlation coefficient).</p></sec><sec><title>Результаты</title><p>Результаты. Медиана возраста у пациентов в полученной выборке составляла 53,9 лет (95 % доверительный интервал [ДИ] 50,0–57,8). Среди них 65 % пациентов были моложе, а 35 % – старше 50 лет. Медианный уровень пролиферативной активности, оцененный по уровню экспрессии Ki-67 по шкале St. Gallen Consensus (2009 г.) составил 76,4 % (95 % ДИ 73,28 – 79,66). Однако значение данного показателя варьировало в зависимости от возраста пациентов. При проведении анализа выявлено, что существует корреляция между уровнем экспрессии Ki-67 и возрастом пациента, коэффициент корреляции Кенделла составил –0,449 (p &lt; 0,05), что соответствует слабой-умеренной отрицательной связи.</p></sec><sec><title>Заключение</title><p>Заключение. В ходе проведенного анализа выявлено, что степень экспрессии Ki-67 коррелирует с возрастом дебюта РМЖ у пациента. Таким образом, имеется тенденция к более высокой пролиферативной активности раковых клеток у молодых пациентов.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose of the study</title><p>Purpose of the study. To analyze the correlation between the proliferative activity of atypical cells in triple-negative breast cancer (BC) and patient age.</p></sec><sec><title>Patients and methods</title><p>Patients and methods. The study included 80 women with a newly diagnosed BC, in whom a triple-negative surrogate molecular genetic subtype was identified based on histological and immunohistochemical examination with assessment of hormone receptor expression and Ki‑67. Statistical analysis was performed using Statistica 13.5.0.17 software (TIBCO Software Inc.). The Shapiro-Wilk test was applied to assess the normality of the distribution. Correlation between variables was evaluated using the Kendall tau rank correlation coefficient.</p></sec><sec><title>Results</title><p>Results. The median age of patients was 53.9 years (95 % confidence interval [CI]: 50.0–57.8) (Fig. 3). Among them, 65 % of patients were younger than 50 years and 35 % were older. The median proliferative activity, assessed by Ki‑67 expression according to the St. Gallen Consensus (2009), was 76.4 % (95 % CI: 73.28–79.66). However, this indicator varied depending on patient age. The analysis revealed a correlation between Ki‑67 expression level and patient age, with a Kendall tau coefficient of –0.449 (p &lt; 0.05), corresponding to a weak-to-moderate negative association.</p></sec><sec><title>Conclusion</title><p>Conclusion. The analysis showed that the degree of Ki‑67 expression correlates with the age at breast cancer onset. 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