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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Advances in Molecular Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Advances in Molecular Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Успехи молекулярной онкологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-805X</issn><issn publication-format="electronic">2413-3787</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">299</article-id><article-id pub-id-type="doi">10.17650/2313-805X-2020-7-4-10-19</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>REVIEW ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОБЗОРНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The prospect of using liquid biopsy in diagnosis and treatment strategy in patients with carcinomas of unknown primary</article-title><trans-title-group xml:lang="ru"><trans-title>Перспектива использования жидкостной биопсии в диагностике и лечении опухолей невыявленной первичной локализации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7142-2986</contrib-id><name-alternatives><name xml:lang="en"><surname>Kononenko</surname><given-names>I. B.</given-names></name><name xml:lang="ru"><surname>Кононенко</surname><given-names>И. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>23 Kashirskoe Shosse, Moscow 115478</p></bio><bio xml:lang="ru"><p>115478 Москва, Каширское шоссе, 23</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1883-2214</contrib-id><name-alternatives><name xml:lang="en"><surname>Filippova</surname><given-names>M. G.</given-names></name><name xml:lang="ru"><surname>Филиппова</surname><given-names>М. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>23 Kashirskoe Shosse, Moscow 115478</p></bio><bio xml:lang="ru"><p><bold>Маргарита Геннадьевна Филиппова</bold></p><p>115478 Москва, Каширское шоссе, 23</p></bio><email>fimargarita@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0170-5681</contrib-id><name-alternatives><name xml:lang="en"><surname>Snegovoy</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Снеговой</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>23 Kashirskoe Shosse, Moscow 115478</p></bio><bio xml:lang="ru"><p>115478 Москва, Каширское шоссе, 23</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gutorov</surname><given-names>S. L.</given-names></name><name xml:lang="ru"><surname>Гуторов</surname><given-names>С. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>23 Kashirskoe Shosse, Moscow 115478</p></bio><bio xml:lang="ru"><p>115478 Москва, Каширское шоссе, 23</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н. Н. Блохина» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2020</year></pub-date><volume>7</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>10</fpage><lpage>19</lpage><history><date date-type="received" iso-8601-date="2021-01-12"><day>12</day><month>01</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-01-12"><day>12</day><month>01</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Kononenko I.B., Filippova M.G., Snegovoy A.V., Gutorov S.L.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Кононенко И.Б., Филиппова М.Г., Снеговой А.В., Гуторов С.Л.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Kononenko I.B., Filippova M.G., Snegovoy A.V., Gutorov S.L.</copyright-holder><copyright-holder xml:lang="ru">Кононенко И.Б., Филиппова М.Г., Снеговой А.В., Гуторов С.Л.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://umo.abvpress.ru/jour/article/view/299">https://umo.abvpress.ru/jour/article/view/299</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> The search and use of new molecular prognostic and predictive markers of efficacy detected by liquid biopsy are aimed at understanding the biology of Carcinomas of Unknown Primary (CUP) and improving results of patient treatment. The review is devoted to advances in scientific and clinical research on this issue.</p><p><bold>Materials and methods.</bold> In order to assess the current state of the problem, a search and analysis of relevant data of the scientific databases PubMed, Medline, RISC was carried out.</p><p><bold>Results.</bold> The scientific rationale for the use of liquid biopsy in clinical practice to improve the treatment of cancer patients with CUP is presented. The results of the use of modern approaches to the analysis of fluid biopsy samples in CUP are presented. In particular, the features of using circulating free DNA, circulating tumor DNA, circulating tumor cells in the analysis are considered. The modern possibilities of determining tissue specificity using liquid biopsy in CUP are discussed. The prospects for the development of liquid biopsy for improving diagnostics, determining the prognosis of the disease, and choosing a strategy for treating CUP and the treatment monitoring have been determined.</p><p><bold>Conclusion.</bold> A review of the literature confirms that modern methods of molecular profiling of tumor cells obtained both as a result of liquid biopsy and tissue biopsies will make a significant contribution to the determination of tissue specificity, molecular characteristics of CUP for a personalized approach in order to improve strategies and treatment outcomes for patients with CUP.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Поиск и использование новых молекулярных прогностических и предиктивных маркеров, выявляемых методом жидкостной биопсии, направлены на определение молекулярно-биологических особенностей опухолей невыявленной первичной локализации (ОНПЛ), что должно способствовать более активному внедрению персонализированного подхода в терапии злокачественных новообразований и улучшению результатов лечения. Обзор посвящен системному анализу достижений в научных и клинических исследованиях по данной тематике.</p><p><bold>Материалы и методы.</bold> В целях оценки современного состояния проблемы были осуществлены поиск и анализ актуальных данных по научным базам PubMed, Medline, РИНЦ и др.</p><p><bold>Результаты.</bold> Представлено научное обоснование использования в клинической практике жидкостной биопсии для совершенствования лечения пациентов с ОНПЛ. Приведены результаты применения современных подходов к анализу образцов жидкостной биопсии при ОНПЛ. В частности, рассмотрены особенности использования в анализе циркулирующей свободной ДНК, циркулирующей опухолевой ДНК, циркулирующих опухолевых клеток. Обсуждены современные возможности определения тканевой специфичности с использованием жидкостной биопсии при ОНПЛ. Определены перспективы развития жидкостной биопсии для совершенствования диагностики, оценки прогноза заболевания, выбора стратегии лечения ОНПЛ.</p><p><bold>Заключение.</bold> Обзор литературы подтверждает, что современные методы молекулярного профилирования опухолевых клеток, полученных как при жидкостной биопсии, так и в результате биопсии ткани, внесут значимый вклад в определение тканевой специфичности, молекулярных характеристик ОНПЛ для персонализированного подхода в целях совершенствования стратегии и улучшения результатов лечения пациентов с ОНПЛ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>carcinomas of unknown primary</kwd><kwd>liquid biopsy</kwd><kwd>circulating tumor cells</kwd><kwd>molecular profiling</kwd><kwd>gene expression</kwd><kwd>targeted therapy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>опухоль невыявленной первичной локализации</kwd><kwd>жидкостная биопсия</kwd><kwd>циркулирующие опухолевые клетки</kwd><kwd>молекулярное профилирование</kwd><kwd>экспрессия генов</kwd><kwd>таргетная терапия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Komarov I.G., Komov D.V. 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