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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">oncotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский онкологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian journal of oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-4861</issn><issn pub-type="epub">2312-3168</issn><publisher><publisher-name>Tomsk National Research Medical Сепtеr of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21294/1814-4861-2025-24-2-46-55</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-3535</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>ЛАБОРАТОРНЫЕ И ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LABORATORY AND EXPERIMENTAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Влияние экспрессии белков ROR1, BMI-1 и мутации PIK3CA на прогноз люминального рака молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>The impact of ROR1, BMI-1 expression and PIK3CA mutation on the prognosis of luminal 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/0000-0002-1195-4008</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вторушин</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vtorushin</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вторушин Сергей Владимирович, доктор медицинских наук, профессор, заместитель директора по научной работе и трансляционной медицине, руководитель отделения общей и молекулярной патологии; профессор кафедры патологической анатомии</p><p>Researcher ID (WOS): S-3789-2016. Author ID (Scopus): 26654562300 </p><p>634009, г. Томск, пер. Кооперативный, 5</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>Sergey V. Vtorushin, MD, DSc, Professor, Deputy Director for Research and Translational Medicine, Head of Department, Department of General and Molecular Pathology; Professor, Pathology Department</p><p>Researcher ID (WOS): S-3789-2016. Author ID (Scopus): 26654562300</p><p>5, Kooperativny St., Tomsk, 634009 </p><p>2, Moskovsky trakt, Tomsk, 634050 </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/0000-0001-9472-017X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тараканова</surname><given-names>В. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarakanova</surname><given-names>V. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тараканова Валерия Олеговна, младший научный сотрудник отделения системной и персонализированной терапии опухолей; ассистент кафедры онкологии</p><p>634009, г. Томск, пер. Кооперативный, 5</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>Valeriia O. Tarakanova, Junior Researcher, Department of Systemic and Personalized Tumor Therapy; Assistant, Oncology Department</p><p>5, Kooperativny St., Tomsk, 634009 </p><p>2, Moskovsky trakt, Tomsk, 634050 </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/0000-0002-0562-3878</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>Бабышкина Наталия Николаевна, доктор медицинских наук, ведущий научный сотрудник лаборатории молекулярной онкологии и иммунологии; доцент кафедры биохимии и молекулярной биологии с курсом клинической лабораторной диагностики</p><p>Researcher ID (WOS): A-7526-2012. Author ID (Scopus): 26641099700</p><p>634009, г. Томск, пер. Кооперативный, 5</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>Natalia N. Babyshkina, MD, DSc, Leading Researcher, Laboratory of Molecular Oncology and Immunology; Associate Professor, Department of Biochemistry and Molecular Biology with a Course in Clinical Laboratory Diagnostics</p><p>Researcher ID (WOS): A-7526-2012. Author ID (Scopus): 26641099700</p><p>5, Kooperativny St., Tomsk, 634009 </p><p>2, Moskovsky trakt, Tomsk, 634050 </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/0000-0003-0051-8814</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гервас</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gervas</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гервас Полина Анатольевна, кандидат медицинских наук, научный сотрудник лаборатории молекулярной онкологии и иммунологии, руководитель группы молекулярно-генетических методов исследований в референс центре</p><p>Researcher ID (WOS): C-5846-2012. Author ID (Scopus): 13613767400</p><p>634009, г. Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>Polina A. Gervas, MD, PhD, Researcher, Laboratory of Molecular Oncology and Immunology, Head of the Group of Molecular-Genetic Research Methods, Reference Center</p><p>Researcher ID (WOS): C-5846-2012. Author ID (Scopus):13613767400</p><p>5, Kooperativny St., Tomsk, 634009 </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/0000-0002-1909-1681</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крахмаль</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Krakhmal</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Крахмаль Надежда Валерьевна, кандидат медицинских наук, доцент, старший научный сотрудник отделения общей и молекулярной патологии; доцент кафедры патологической анатомии</p><p>Researcher ID (WOS): S-3799-2016. Author ID (Scopus): 56678622400</p><p>634009, г. Томск, пер. Кооперативный, 5</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>Nadezhda V. Krakhmal, MD, PhD, Senior Researcher, Department of General and Molecular Pathology; Assistant Professor, Pathology Department</p><p>Researcher ID (WOS): S-3799-2016. Author ID (Scopus): 56678622400</p><p>5, Kooperativny St., Tomsk, 634009 </p><p>2, Moskovsky trakt, Tomsk, 634050 </p></bio><email xlink:type="simple">krakhmal@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Научно-исследовательский институт онкологии, Томский национальный исследовательский медицинский центр Российской академии наук ; ФГБОУ ВО «Сибирский государственный медицинский университет» Минздрава России<country>Россия</country></aff><aff xml:lang="en">Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences ; Siberian State Medical University of the Ministry of Health of Russia<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Научно-исследовательский институт онкологии, Томский национальный исследовательский медицинский центр Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>17</day><month>05</month><year>2025</year></pub-date><volume>24</volume><issue>2</issue><fpage>46</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вторушин С.В., Тараканова В.О., Бабышкина Н.Н., Гервас П.А., Крахмаль Н.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Вторушин С.В., Тараканова В.О., Бабышкина Н.Н., Гервас П.А., Крахмаль Н.В.</copyright-holder><copyright-holder xml:lang="en">Vtorushin S.V., Tarakanova V.O., Babyshkina N.N., Gervas P.A., Krakhmal N.V.</copyright-holder><license 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.siboncoj.ru/jour/article/view/3535">https://www.siboncoj.ru/jour/article/view/3535</self-uri><abstract><p>Рак молочной железы (РМЖ) остается одной из ведущих причин онкологической смертности среди женщин. Люминальные подтипы РМЖ, характеризующиеся экспрессией гормональных рецепторов, составляют около 70 % всех случаев. Однако, несмотря на чувствительность к эндокринной терапии, часть пациенток демонстрирует прогрессирование заболевания, что связано с молекулярными осо­бенностями опухоли. Изучение прогностических маркеров, таких как ROR1, BMI-1 и мутация PIK3CA, является важным направлением в понимании механизмов устойчивости к терапии и метастазирования. Цель исследования - оценка прогностической значимости экспрессии белков ROR1, BMI-1 и мутации гена PIK3CA у пациенток с люминальным РМЖ, получавших гормонотерапию ингибиторами ароматазы, а также их влияние на клинические исходы, включая 5-летнюю безрецидивную выживае­мость. Материал и методы. В исследование были включены 80 пациенток с первично-операбельным люминальным Нег2-негативным РМЖ (T1-2N0-1M0). Все пациентки получали адъювантную гормоно­терапию ингибиторами ароматазы. В опухолевой ткани оценивали экспрессию ROR1, BMI-1, циклина D1 (метод иммуногистохимии) и наличие мутации PIK3CA (метод полимеразной цепной реакции в реальном времени). Результаты. Позитивная экспрессия ROR1 выявлена в 57,5 %, BMI-1 - в 82,5 %, гиперэкспрессия циклина D1 - в 37,5 % случаев. Мутация PIK3CA установлена у 30 % пациенток. Экспрессия ROR1 выявлялась в 100 % случаев при люминальном B подтипе (14 из 14) и в 48 % при подтипе A (32 из 66) (p=0,001). При наличии экспрессии ROR1 гиперэкспрессия циклина D1 отмеча­лась в 58,7 % против 8,8 % при ее отсутствии, p&lt;0,0001. Высокий уровень экспрессии ROR1 (&gt;50 %) ассоциировался с гиперэкспрессией циклина D1 в 100 % случаев (p=0,044). Аналогично при высоком уровне экспрессии BMI-1 (&gt;50 %) гиперэкспрессия циклина D1 регистрировалась у 64,7 % пациенток против 31,6 % при низком уровне (p=0,03). У пациенток с мутацией PIK3CA 5-летняя безрецидивная выживаемость была значимо ниже (p=0,03), прогрессирование наблюдалось у 29 % против 13 % без мутации (p=0,07). Заключение. Исследование подтверждает значимость ROR1, BMI-1 и мутации PIK3CA как потенциальных прогностических маркеров у пациенток с люминальным РМЖ. Выявлен­ные взаимосвязи с циклином D1 и молекулярными подтипами подчеркивают их роль в опухолевом прогрессировании. Полученные данные могут быть использованы для дальнейшей персонализации лечения, включая комбинированные подходы с ингибиторами PI3K и гормонотерапией.</p></abstract><trans-abstract xml:lang="en"><p>Breast cancer (BC) remains one of the leading causes of cancer mortality among women. Luminal BC subtypes, which are characterized by the expression of hormone receptors, account for about 70 % of all breast cancer cases. However, despite sensitivity to endocrine therapy, some patients demonstrate disease progression, which is associated with the molecular features of the tumor. The study of prognostic markers such as ROR1, BMI-1, and PIK3CA mutation is essential for understanding the mechanisms of resistance to therapy and metastasis. The aim of the study was to evaluate the prognostic significance of ROR1, BMI-1 protein expression and PIK3CA gene mutation in patients with luminal BC, who received hormone therapy with aromatase inhibitors, as well as their impact on clinical outcomes, including 5-year relapse-free survival. Material and Methods. The study included 80 patients with primary resectable luminal Her2-negative breast cancer (T1–2N0–1M0). All patients received adjuvant hormonal therapy with aromatase inhibitors. The expression of ROR1, BMI-1, cyclin D1 (immunohistochemistry), and PIK3CA mutation (real-time polymerase chain reaction) were assessed in tumor tissue. Results. Positive ROR1 expression was detected in 57.5 % of cases, BMI-1 in 82.5 %, and cyclin D1 overexpression in 37.5 %. The PIK3CA mutation was identified in 30 % of patients. ROR1 expression was observed in 100 % of cases with the luminal B subtype (14 out of 14) and in 48 % of cases with the luminal A subtype (32 out of 66), p=0.001. Cyclin D1 overexpression was observed in 58.7 % of patients with ROR1 expression and in 8.8 % of patients without ROR1 expression, p&lt;0.0001. A high level of ROR1 expression (&gt;50 %) was associated with cyclin D1 overexpression in 100 % of cases, p=0.044. Similarly, a high level of BMI-1 expression (&gt;50 %) was associated with cyclin D1 overexpression in 64.7 % of patients compared to 31.6 % in those with low expression, p=0.03. Patients with PIK3CA mutations demonstrated significantly lower 5-year disease-free survival (p=0.03); disease progression was observed in 29 % of cases with the mutation versus 13 % in those without it (p=0.07). Conclusion. The study confirms the significance of ROR1, BMI-1 and PIK3CA mutation as potential prognostic markers in patients with luminal breast cancer. The identified relationships with cyclin D1 and molecular subtypes emphasize their role in tumor progression. The data obtained can be used for further personalization of treatment, including combination approaches with PI3K inhibitors and hormonal therapy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>люминальный рак молочной железы</kwd><kwd>ROR1</kwd><kwd>BMI-1</kwd><kwd>цикпин D1</kwd><kwd>мутация PIK3CA</kwd><kwd>безрецидивная выживаемость</kwd><kwd>ингибиторы ароматазы.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>luminal breast cancer</kwd><kwd>ROR1</kwd><kwd>BMI-1</kwd><kwd>cyclin D1</kwd><kwd>PIK3CA mutation</kwd><kwd>relapse-free survival</kwd><kwd>aromatase inhibitors</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">Sancho-Garnier H., Colonna M. Epidemiologie des cancers du sein. Presse Med. 2019; 48(10): 1076–84. doi: 10.1016/j.lpm.2019.09.022.</mixed-citation><mixed-citation xml:lang="en">Sancho-Garnier H., Colonna M. Epidemiologie des cancers du sein. 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