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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">10.21294/1814-4861-2022-21-4-32-39</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-2237</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>КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Общая выживаемость больных раком ободочной кишки с различным уровнем циркулирующих опухолевых клеток и возможности повышения его прогностической значимости</article-title><trans-title-group xml:lang="en"><trans-title>Overall survival in colon cancer patients with different levels of circulating tumor cells and feasibility of enhancing its prognostic value</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3061-6108</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кит</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kit</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кит Олег Иванович - доктор медицинских наук, профессор, академик РАН, генеральный директор.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p><p>SPIN-код: 1728-0329. Researcher ID (WOS): U-2241-2017. Author ID (Scopus): 55994103100.</p></bio><bio xml:lang="en"><p>Oleg I. Kit - MD, Professor, Member of the Russian Academy of Sciences, General Director, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</p><p>Researcher ID (WOS): U-2241-2017. Author ID (Scopus): 55994103100.</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/0000-0002-1410-122X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Златник</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Zlatnik</surname><given-names>E. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Златник Елена Юрьевна - доктор медицинских наук, профессор, главный научный сотрудник лаборатории иммунофенотипирования опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p><p>SPIN-код: 4137-7410. Author ID (Scopus): 6603160432.</p></bio><bio xml:lang="en"><p>Elena Yu. Zlatnik - MD, Professor, Chief Researcher, Laboratory for Immunophenotyping of Tumors, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</p><p>Author ID (Scopus): 6603160432.</p></bio><email xlink:type="simple">elena-zlatnik@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/0000-0002-6496-9641</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новикова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Novikova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Новикова Инна Арнольдовна - кандидат медицинских наук, заместитель генерального директора по науке.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p><p>SPIN-код: 4810-2424. Researcher ID (WOS): E-7710-2018. Author ID (Scopus): 7005153343.</p></bio><bio xml:lang="en"><p>Inna A. Novikova - MD, PhD, Deputy General Director for Science, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</p><p>Researcher ID (WOS): E-7710-2018. Author ID (Scopus): 7005153343.</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/0000-0001-5226-0152</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ульянова</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Ulianova</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ульянова Елена Петровна - научный сотрудник лаборатории иммунофенотипирования опухолей.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p><p>SPIN-код: 1243-9475. Author ID (Scopus): 57203357998.</p></bio><bio xml:lang="en"><p>Elena P. Ulyanova - Researcher, Laboratory of Immunophenotyping of Tumors, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</p><p>Author ID (Scopus): 57203357998.</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/0000-0003-3545-9359</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демидова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Demidova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Демидова Александра Александровна - кандидат медицинских наук, НМИЦ онкологии Минздрава России; доцент, заведующая кафедрой медицинской и биологической физики РостГМУ Минздрава России.</p><p>344037, Ростов-на-Дону, 14-я линия, 63; 344022, Ростов-на-Дону, пер. Нахичеванский, 29.</p><p>SPIN-код: 4014-8502. Researcher ID (WOS): O-9155-2016. Author ID (Scopus): 7006838349.</p></bio><bio xml:lang="en"><p>Aleksandra A. Demidova - MD, PhD, National Medical Research Centre for Oncology of the Ministry of Health of Russia; Associate Professor, Head of the Department of Medical and Biological Physics, Rostov State Medical University of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don; 29, Nakhichevan Ln., 344022, Rostov-on-Don.</p><p>Researcher ID (WOS): O-9155-2016. Author ID (Scopus): 7006838349.</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/0000-0002-9979-4095</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колесников</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolesnikov</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Колесников Евгений Николаевич - доктор медицинских наук, заведующий отделением абдоминальной онкологии № 1 с группой рентгенэндоваскулярных методов диагностики и лечения.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p></bio><bio xml:lang="en"><p>Evgeny N. Kolesnikov - MD, DSc, Head of the Department of Abdominal Oncology № 1 with a group of X-ray endovascular methods of diagnosis and treatment, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</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/0000-0003-1957-7363</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Геворкян</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gevorkyan</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Геворкян Юрий Артушевич - доктор медицинских наук, профессор, заведующий отделением абдоминальной онкологии № 2.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p></bio><bio xml:lang="en"><p>Yuri A. Gevorkyan - MD, Professor, Head of the Department of Abdominal Oncology № 2, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</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/0000-0002-0118-4935</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Солдаткина</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Soldatkina</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Солдаткина Наталья Васильевна - доктор медицинских наук, врач-онколог отделения абдоминальной онкологии № 2.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p></bio><bio xml:lang="en"><p>Natalya V. Soldatkina - MD, DSc, Oncologist, Department of Abdominal Oncology № 2, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</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/0000-0003-3998-8004</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Снежко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Snezhko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Снежко Александр Владимирович - доктор медицинских наук, врач-хирург отделения абдоминальной онкологии № 1 с группой рентгенэндоваскулярных методов диагностики и лечения.</p><p>344037, Ростов-на-Дону, 14-я линия, 63.</p><p>SPIN-код: 2913-3744.</p></bio><bio xml:lang="en"><p>Alexander V. Snezhko - MD, DSc, Surgeon of the Department of Abdominal Oncology № 1 with a group of X-ray endovascular methods of diagnosis and treatment, National Medical Research Centre for Oncology of the Ministry of Health of Russia.</p><p>63, 14 Line St., 344037, Rostov-on-Don.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр онкологии Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology of the Ministry of Health of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр онкологии Минздрава России; Ростовский государственный медицинский университет Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology of the Ministry of Health of Russia; Rostov State Medical University of the Ministry of Health of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>02</day><month>09</month><year>2022</year></pub-date><volume>21</volume><issue>4</issue><fpage>32</fpage><lpage>39</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кит О.И., Златник Е.Ю., Новикова И.А., Ульянова Е.П., Демидова А.А., Колесников Е.Н., Геворкян Ю.А., Солдаткина Н.В., Снежко А.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Кит О.И., Златник Е.Ю., Новикова И.А., Ульянова Е.П., Демидова А.А., Колесников Е.Н., Геворкян Ю.А., Солдаткина Н.В., Снежко А.В.</copyright-holder><copyright-holder xml:lang="en">Kit O.I., Zlatnik E.Y., Novikova I.A., Ulianova E.P., Demidova A.A., Kolesnikov E.N., Gevorkyan Y.A., Soldatkina N.V., Snezhko A.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.siboncoj.ru/jour/article/view/2237">https://www.siboncoj.ru/jour/article/view/2237</self-uri><abstract><p>Разработка персонализированных подходов к диагностике, лечению и прогнозированию рака ободочной кишки является актуальной проблемой современной онкологии. Уровни циркулирующих опухолевых клеток (ЦОК) и опухолевых стволовых клеток (ОСК) рассматриваются как многообещающие неинвазивные прогностические факторы. Цель исследования – оценка общей выживаемости (ОВ) больных раком ободочной кишки II–IV стадий с различным уровнем ЦОК и изучение возможности повышения его прогностической значимости путем дополнительного определения уровня ОСК CD44+ в опухоли. Материал и методы. В исследование включено 299 больных раком ободочной кишки II–IV стадий. Выполнялось хирургическое лечение, после чего больные II–III стадий получали адъювантную химиотерапию (FOLFOX). Больным IV стадии с резектабельными метастазами в печень одновременно с удалением первичной опухоли выполнялась операция на печени, затем – химиотерапия (FOLFOX). До операции у больных определяли ЦОК методом Veridex CellSearch™, в удаленной опухоли – экспрессию маркера ОСК CD44+ иммуногистохимическим методом. Изучали ОВ больных с различным уровнем ЦОК, кумулятивную ОВ определяли методом Каплана–Мейера. Для построения прогностической модели использовали метод логистического регрессионного анализа, для оценки влияния изучаемых параметров на ОВ больных – регрессионный анализ Кокса. Результаты. Наблюдается более низкая ОВ при более высоких уровнях ЦОК, разделенных на ранги: 0, 1–3, 4–9, ≥10; (χ2=11,59, p=0,009), что позволяет использовать данный тест как фактор прогноза. Его прогностическую значимость можно повысить при определении в ткани опухоли процента cd44+ опухолевых клеток. Выявлено статистически значимое сопряжение рангов ЦОК и CD44+ с ОВ больных. Повышение концентрации ЦОК в крови на один ранг сопровождалось повышением риска развития летального исхода в 1,58 раза (р=0,002); при дополнительном увеличении экспрессии cd44+ ≥10 % – в 7,2 раза (p&lt;0,001). Для индивидуальной оценки риска разработана модель расчета прогностического коэффициента К с высокой диагностической чувствительностью и специфичностью, предложено ее математическое выражение. Значение K≥0,411 говорит о высоком риске неблагоприятного исхода. Заключение. Разработан прогностический алгоритм для оценки риска неблагоприятного исхода рака ободочной кишки по уровню ЦОК в крови и CD44+ ОСК в ткани опухоли.</p></abstract><trans-abstract xml:lang="en"><p>Development of personalized approaches to diagnosis, treatment and prognosis of colon cancer (CC) still remains challenging. Levels of circulating tumor (CTC) and cancer stem cells (CSC) are promising non-invasive prognostic factors. Our aim was to assess the overall survival (OS) of patients with stage II–IV CC with different levels of CTCs as well as to enhance their prognostic value by additionally determining the level of CD44+ CSCs. Material and methods. The study included 299 patients with stage II–IV CC. All patients underwent surgery followed by adjuvant chemotherapy (FOLFOX). patients with stage IV CC with resectable liver metastases underwent simultaneous resection of the primary tumor and liver metastases, followed by FOLFOX chemotherapy. the proportion of CTCs was evaluated before surgery using Veridex CellSearch™, and the level of CD44+ CSCs was determined in the tissue of the removed tumor by the IHC method. OS was studied in patients with different CTC levels, cumulative OS was calculated by Kaplan–Meier`s method. prognostic algorithm was designed by logistic regression analysis and cox proportional hazards model. Results. OS was found to be lower in patients with higher CTC levels divided into ranges: 0, 1–3, 4–9, ≥10 (χ2=11.59, p=0.009); thus enabling us to use it for prognosis. its prognostic value is enhanced by estimation of CD44+ CSC in tumor. Statistically significant conjugation between CTC and CD44+ ranges was found. an increase in CTC level by 1 range resulted in the increase in the risk of fatal outcome by 1.58 times (р=0.002); the additive increase in CD44+ expression ≥10 % resulted in the increase in the risk of fatal outcome by 7.2 times (p&lt;0.001). For individual risk assessment, a model for calculating the prognostic coefficient K with high diagnostic sensitivity and specificity was developed, and its mathematical expression was proposed. the value of K≥0.411 indicates a high risk of adverse outcome. Conclusion. The prognostic algorithm for the risk of unfavorable outcome of patients with CC, based on the assessment of CTC and CD44+ CSC levels, was developed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>циркулирующие опухолевые клетки</kwd><kwd>опухолевые стволовые клетки</kwd><kwd>рак ободочной кишки</kwd><kwd>выживаемость</kwd><kwd>прогноз</kwd><kwd>логистическая регрессия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>circulating tumor cells (CTC)</kwd><kwd>cancer stem cells (CSC)</kwd><kwd>colon cancer (CC)</kwd><kwd>overall surviving (OS)</kwd><kwd>prognosis</kwd><kwd>logistic regression analysis</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания ФГБУ «Национального медицинского исследовательского центра онкологии» Министерства здравоохранения Российской Федерации (№ 121031100251-9).</funding-statement><funding-statement xml:lang="en">The study was conducted within the framework of the state assignment of National Medical Research Centre for Oncology (No. 121031100251-9).</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">McGranahan N., Swanton C. Clonal Heterogeneity and Tumor Evolution: Past, Present, and the Future. Cell. 2017; 168(4): 613–28. doi: 10.1016/j.cell.2017.01.018.</mixed-citation><mixed-citation xml:lang="en">McGranahan N., Swanton C. Clonal Heterogeneity and Tumor Evolution: Past, Present, and the Future. Cell. 2017; 168(4): 613–28. doi: 10.1016/j.cell.2017.01.018.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">De Smedt L., Palmans S., Sagaert X. Tumour budding in colorectal cancer: what do we know and what can we do? Virchows Arch. 2016; 468(4): 397–408. doi: 10.1007/s00428-015-1886-5.</mixed-citation><mixed-citation xml:lang="en">De Smedt L., Palmans S., Sagaert X. Tumour budding in colorectal cancer: what do we know and what can we do? Virchows Arch. 2016; 468(4): 397–408. doi: 10.1007/s00428-015-1886-5.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Синянский Л.Е., Вторушин С.В., Паталяк С.В., Афанасьев С.Г. Прогностическая роль молекулярных подтипов рака толстой кишки. Современный взгляд на проблему. Сибирский онкологический журнал. 2021; 20(3): 107–114. doi: 10.21294/1814-4861-2021-20-3-107-114.</mixed-citation><mixed-citation xml:lang="en">Sinyansky L.E., Vtorushin S.V., Patalyak S.V., Afanasyev S.G. Prognostic role of molecular subtypes of colon cancer. A current view on the problem. Siberian Journal of Oncology. 2021; 20(3): 107–114. (in Russian). doi: 10.21294/1814-4861-2021-20-3-107-114.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Сагакянц А.Б. Объединенный иммунологический форум: современные направления развития фундаментальной и прикладной онкоиммунологии (Новосибирск, 2019). Южно-Российский онкологический журнал. 2020; 1(2): 36–45. doi:10.37748/2687-0533-2020-1-2-5.</mixed-citation><mixed-citation xml:lang="en">Sagakyanc A.B. United immunological forum: current trends in the development of fundamental and applied oncoimmunology (Novosibirsk, 2019). South Russian Journal of Cancer. 2020; 1(2): 36–45. (in Russian). doi:10.37748/2687-0533-2020-1-2-5.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Tan Y., Wu H. The significant prognostic value of circulating tumor cells in colorectal cancer: A systematic review and meta-analysis. Curr Probl Cancer. 2018; 42(1): 95–106. doi: 10.1016/j.currproblcancer.2017.11.002.</mixed-citation><mixed-citation xml:lang="en">Tan Y., Wu H. The significant prognostic value of circulating tumor cells in colorectal cancer: A systematic review and meta-analysis. Curr Probl Cancer. 2018; 42(1): 95–106. doi: 10.1016/j.currproblcancer.2017.11.002.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Непомнящая Е.М., Кит О.И., Нистратова О.В., Новикова И.А., Никипелова Е.А., Бахтин А.В., Ульянова Е.П., Вострикова Ж.И., Селютина О.Н. Циркулирующие опухолевые клетки и некоторые морфо-иммуногистохимические показатели при колоректальном раке. Современные проблемы науки и образования. 2016; 2: 140.</mixed-citation><mixed-citation xml:lang="en">Nepomnyashchaya E.M., Kit O.I., Nistratova O.V., Novikova I.A., Nikipelova E.A., Bahtin A.V., Ul’yanova E.P., Vostrikova Zh.I., Selyutina O.N. Circulating tumor cells and some morpho-immunohistochemical parameters in colorectal cancer. Modern Problems of Science and Education. 2016; 2: 140. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Veyrune L., Naumann D.N., Christou N. Circulating Tumour Cells as Prognostic Biomarkers in Colorectal Cancer: A Systematic Review. Int J Mol Sci. 2021; 22(8): 3437. doi: 10.3390/ijms22083437.</mixed-citation><mixed-citation xml:lang="en">Veyrune L., Naumann D.N., Christou N. Circulating Tumour Cells as Prognostic Biomarkers in Colorectal Cancer: A Systematic Review. Int J Mol Sci. 2021; 22(8): 3437. doi: 10.3390/ijms22083437.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Nanduri L.K., Hissa B., Weitz J., Schölch S., Bork U. The prognostic role of circulating tumor cells in colorectal cancer. Expert Rev Anticancer Ther. 2019; 19(12): 1077–88. doi: 10.1080/14737140.2019.1699065.</mixed-citation><mixed-citation xml:lang="en">Nanduri L.K., Hissa B., Weitz J., Schölch S., Bork U. The prognostic role of circulating tumor cells in colorectal cancer. Expert Rev Anticancer Ther. 2019; 19(12): 1077–88. doi: 10.1080/14737140.2019.1699065.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Hinz S., Hendricks A., Wittig A., Schafmayer C., Tepel J., Kalthoff H., Becker T., Röder C. Detection of circulating tumor cells with CK20 RT-PCR is an independent negative prognostic marker in colon cancer patients – a prospective study. BMC Cancer. 2017; 17(1): 53. doi: 10.1186/s12885-016-3035-1.</mixed-citation><mixed-citation xml:lang="en">Hinz S., Hendricks A., Wittig A., Schafmayer C., Tepel J., Kalthoff H., Becker T., Röder C. Detection of circulating tumor cells with CK20 RT-PCR is an independent negative prognostic marker in colon cancer patients – a prospective study. BMC Cancer. 2017; 17(1): 53. doi: 10.1186/s12885-016-3035-1.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Tsai W.S., Chen J.S., Shao H.J., Wu J.C., Lai J.M., Lu S.H., Hung T.F., Chiu Y.C., You J.F., Hsieh P.S., Yeh C.Y., Hung H.Y., Chiang S.F., Lin G.P., Tang R., Chang Y.C. Circulating Tumor Cell Count Correlates with Colorectal Neoplasm Progression and Is a Prognostic Marker for Distant Metastasis in Non-Metastatic Patients. Sci Rep. 2016; 6: 24517. doi: 10.1038/srep24517.</mixed-citation><mixed-citation xml:lang="en">Tsai W.S., Chen J.S., Shao H.J., Wu J.C., Lai J.M., Lu S.H., Hung T.F., Chiu Y.C., You J.F., Hsieh P.S., Yeh C.Y., Hung H.Y., Chiang S.F., Lin G.P., Tang R., Chang Y.C. Circulating Tumor Cell Count Correlates with Colorectal Neoplasm Progression and Is a Prognostic Marker for Distant Metastasis in Non-Metastatic Patients. Sci Rep. 2016; 6: 24517. doi: 10.1038/srep24517.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Кит О.И., Геворкян Ю.А., Солдаткина Н.В., Новикова И.А., Водолажский Д.И., Шуликов П.Б. Способ прогнозирования метастазирования при раке ободочной кишки. Патент РФ № 2613142. Опубл. 15.03.2017.</mixed-citation><mixed-citation xml:lang="en">Kit O.I., Gevorkyan YU.A., Soldatkina N.V., Novikova I.A., Vodolazhskij D.I., Shulikov P.B. Method for predicting metastasis in colon cancer. The patent of the Russian Federation № 2613142. 15.03.2017. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Rothé F., Maetens M., Rouas G., Paesmans M., Van den Eynde M., Van Laethem J.L., Vergauwe P., Deboever G., Bareche Y., Vandeputte C., Ignatiadis M., Hendlisz A. CTCs as a prognostic and predictive biomarker for stage II/III Colon Cancer: a companion study to the PePiTA trial. BMC Cancer. 2019; 19(1): 304. doi: 10.1186/s12885-019-5528-1.</mixed-citation><mixed-citation xml:lang="en">Rothé F., Maetens M., Rouas G., Paesmans M., Van den Eynde M., Van Laethem J.L., Vergauwe P., Deboever G., Bareche Y., Vandeputte C., Ignatiadis M., Hendlisz A. CTCs as a prognostic and predictive biomarker for stage II/III Colon Cancer: a companion study to the PePiTA trial. BMC Cancer. 2019; 19(1): 304. doi: 10.1186/s12885-019-5528-1.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Abdalla T.S.A., Meiners J., Riethdorf S., König A., Melling N., Gorges T., Karstens K.F., Izbicki J.R., Pantel K., Reeh M. Prognostic value of preoperative circulating tumor cells counts in patients with UICC stage I-IV colorectal cancer. PLoS One. 2021; 16(6). doi: 10.1371/journal.pone.0252897.</mixed-citation><mixed-citation xml:lang="en">Abdalla T.S.A., Meiners J., Riethdorf S., König A., Melling N., Gorges T., Karstens K.F., Izbicki J.R., Pantel K., Reeh M. Prognostic value of preoperative circulating tumor cells counts in patients with UICC stage I-IV colorectal cancer. PLoS One. 2021; 16(6). doi: 10.1371/journal.pone.0252897.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Yang C., Shi D., Wang S., Wei C., Zhang C., Xiong B. Prognostic value of pre- and post-operative circulating tumor cells detection in colorectal cancer patients treated with curative resection: a prospective cohort study based on ISET device. Cancer Manag Res. 2018; 10: 4135–44. doi: 10.2147/CMAR.S176575.</mixed-citation><mixed-citation xml:lang="en">Yang C., Shi D., Wang S., Wei C., Zhang C., Xiong B. Prognostic value of pre- and post-operative circulating tumor cells detection in colorectal cancer patients treated with curative resection: a prospective cohort study based on ISET device. Cancer Manag Res. 2018; 10: 4135–44. doi: 10.2147/CMAR.S176575.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Pan R.J., Hong H.J., Sun J., Yu C.R., Liu H.S., Li P.Y., Zheng M.H. Detection and Clinical Value of Circulating Tumor Cells as an Assisted Prognostic Marker in Colorectal Cancer Patients. Cancer Manag Res. 2021; 13: 4567–78. doi: 10.2147/CMAR.S300554.</mixed-citation><mixed-citation xml:lang="en">Pan R.J., Hong H.J., Sun J., Yu C.R., Liu H.S., Li P.Y., Zheng M.H. Detection and Clinical Value of Circulating Tumor Cells as an Assisted Prognostic Marker in Colorectal Cancer Patients. Cancer Manag Res. 2021; 13: 4567–78. doi: 10.2147/CMAR.S300554.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Baek D.H., Kim G.H., Song G.A., Han I.S., Park E.Y., Kim H.S., Jo H.J., Ko S.H., Park D.Y., Cho Y.K. Clinical Potential of Circulating Tumor Cells in Colorectal Cancer: A Prospective Study. Clin Transl Gastroenterol. 2019; 10(7): e00055. doi: 10.14309/ctg.0000000000000055.</mixed-citation><mixed-citation xml:lang="en">Baek D.H., Kim G.H., Song G.A., Han I.S., Park E.Y., Kim H.S., Jo H.J., Ko S.H., Park D.Y., Cho Y.K. Clinical Potential of Circulating Tumor Cells in Colorectal Cancer: A Prospective Study. Clin Transl Gastroenterol. 2019; 10(7): e00055. doi: 10.14309/ctg.0000000000000055.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Grillet F., Bayet E., Villeronce O., Zappia L., Lagerqvist E.L., Lunke S., Charafe-Jauffret E., Pham K., Molck C., Rolland N., Bourgaux J.F., Prudhomme M., Philippe C., Bravo S., Boyer J.C., Canterel-Thouennon L., Taylor G.R., Hsu A., Pascussi J.M., Hollande F., Pannequin J. Circulating tumour cells from patients with colorectal cancer have cancer stem cell hallmarks in ex vivo culture. Gut. 2017; 66(10): 1802–10. doi: 10.1136/gutjnl-2016-311447.</mixed-citation><mixed-citation xml:lang="en">Grillet F., Bayet E., Villeronce O., Zappia L., Lagerqvist E.L., Lunke S., Charafe-Jauffret E., Pham K., Molck C., Rolland N., Bourgaux J.F., Prudhomme M., Philippe C., Bravo S., Boyer J.C., Canterel-Thouennon L., Taylor G.R., Hsu A., Pascussi J.M., Hollande F., Pannequin J. Circulating tumour cells from patients with colorectal cancer have cancer stem cell hallmarks in ex vivo culture. Gut. 2017; 66(10): 1802–10. doi: 10.1136/gutjnl-2016-311447.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Agnoletto C., Corrà F., Minotti L., Baldassari F., Crudele F., Cook W.J.J., Di Leva G., d’Adamo A.P., Gasparini P., Volinia S. Heterogeneity in Circulating Tumor Cells: The Relevance of the Stem-Cell Subset. Cancers (Basel). 2019; 11(4): 483. doi: 10.3390/cancers11040483.</mixed-citation><mixed-citation xml:lang="en">Agnoletto C., Corrà F., Minotti L., Baldassari F., Crudele F., Cook W.J.J., Di Leva G., d’Adamo A.P., Gasparini P., Volinia S. Heterogeneity in Circulating Tumor Cells: The Relevance of the Stem-Cell Subset. Cancers (Basel). 2019; 11(4): 483. doi: 10.3390/cancers11040483.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Katoh S., Goi T., Naruse T., Ueda Y., Kurebayashi H., Nakazawa T., Kimura Y., Hirono Y., Yamaguchi A. Cancer stem cell marker in circulating tumor cells: expression of CD44 variant exon 9 is strongly correlated to treatment refractoriness, recurrence and prognosis of human colorectal cancer. Anticancer Res. 2015; 35(1): 239–44.</mixed-citation><mixed-citation xml:lang="en">Katoh S., Goi T., Naruse T., Ueda Y., Kurebayashi H., Nakazawa T., Kimura Y., Hirono Y., Yamaguchi A. Cancer stem cell marker in circulating tumor cells: expression of CD44 variant exon 9 is strongly correlated to treatment refractoriness, recurrence and prognosis of human colorectal cancer. Anticancer Res. 2015; 35(1): 239–44.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Hensler M., Vančurová I., Becht E., Palata O., Strnad P., Tesařová P., Čabiňaková M., Švec D., Kubista M., Bartůňková J., Špíšek R., Sojka L. Gene expression profiling of circulating tumor cells and peripheral blood mononuclear cells from breast cancer patients. Oncoimmunology. 2015; 5(4): e1102827. doi: 10.1080/2162402X.2015.1102827.</mixed-citation><mixed-citation xml:lang="en">Hensler M., Vančurová I., Becht E., Palata O., Strnad P., Tesařová P., Čabiňaková M., Švec D., Kubista M., Bartůňková J., Špíšek R., Sojka L. Gene expression profiling of circulating tumor cells and peripheral blood mononuclear cells from breast cancer patients. Oncoimmunology. 2015; 5(4): e1102827. doi: 10.1080/2162402X.2015.1102827.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
