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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">Russian Journal of Biotherapy</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Biotherapy</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский биотерапевтический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-9784</issn><issn publication-format="electronic">1726-9792</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">1387</article-id><article-id pub-id-type="doi">10.17650/1726-9784-2023-22-2-27-33</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>REVIEWS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОБЗОРЫ ЛИТЕРАТУРЫ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The role of circulating tumor DNA in diagnosis and optimization of treatment of localized and local pancreatic cancer</article-title><trans-title-group xml:lang="ru"><trans-title>Роль циркулирующей опухолевой ДНК в диагностике и оптимизации лечения локализованного и местно-распространенного рака поджелудочной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4230-8033</contrib-id><name-alternatives><name xml:lang="en"><surname>Shabunin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Шабунин</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 2<sup>nd</sup> Botkinsky proezd, Moscow 125284;</p><p>Bld. 1, 2 / 1 Barrikadnaya St., Moscow 125993</p><p> </p></bio><bio xml:lang="ru"><p>125284 Москва, 2‑й Боткинский проезд, 5;</p><p>125993 Москва, ул. Баррикадная, 2 / 1, стр. 1</p><p> </p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9368-6050</contrib-id><name-alternatives><name xml:lang="en"><surname>Ptushkin</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Птушкин</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 2<sup>nd</sup> Botkinsky proezd, Moscow 125284;</p><p>1 Ostrovityanova St., Moscow 117997</p></bio><bio xml:lang="ru"><p>125284 Москва, 2‑й Боткинский проезд, 5;</p><p>117997 Москва, ул. Островитянова, 1</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0335-1204</contrib-id><name-alternatives><name xml:lang="en"><surname>Tavobilov</surname><given-names>M. M.</given-names></name><name xml:lang="ru"><surname>Тавобилов</surname><given-names>М. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 2<sup>nd</sup> Botkinsky proezd, Moscow 125284;</p><p>Bld. 1, 2 / 1 Barrikadnaya St., Moscow 125993</p></bio><bio xml:lang="ru"><p>125284 Москва, 2‑й Боткинский проезд, 5;</p><p>125993 Москва, ул. Баррикадная, 2 / 1, стр. 1</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4460-9136</contrib-id><name-alternatives><name xml:lang="en"><surname>Titov</surname><given-names>K. S.</given-names></name><name xml:lang="ru"><surname>Титов</surname><given-names>К. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 2<sup>nd</sup> Botkinsky proezd, Moscow 125284;</p><p>6 Miklukho-Maklaya St., 117198 Moscow</p></bio><bio xml:lang="ru"><p>125284 Москва, 2‑й Боткинский проезд, 5;</p><p>117198 Москва, ул. Миклухо-Маклая, 6</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0362-1905</contrib-id><name-alternatives><name xml:lang="en"><surname>Kobzev</surname><given-names>Ju. N.</given-names></name><name xml:lang="ru"><surname>Кобзев</surname><given-names>Ю. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 2<sup>nd </sup>Botkinsky proezd, Moscow 125284</p></bio><bio xml:lang="ru"><p>125284 Москва, 2‑й Боткинский проезд, 5;</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5142-1302</contrib-id><name-alternatives><name xml:lang="en"><surname>Karpov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Карпов</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>5 2<sup>nd</sup> Botkinsky proezd, Moscow 125284</p></bio><bio xml:lang="ru"><p>125284 Москва, 2‑й Боткинский проезд, 5;</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7870-808X</contrib-id><name-alternatives><name xml:lang="en"><surname>Kudryash</surname><given-names>E. B.</given-names></name><name xml:lang="ru"><surname>Кудряш</surname><given-names>Е. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Bld. 1, 2 / 1 Barrikadnaya St., Moscow 125993</p></bio><bio xml:lang="ru"><p>Евгений Борисович Кудряш</p><p>125993 Москва, ул. Баррикадная, 2 / 1, стр. 1</p></bio><email>kudryash_e@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Botkin City Clinical Hospital of the Moscow Healhcare Department</institution></aff><aff><institution xml:lang="ru">ГБУЗ г. Москвы Городская клиническая больница им. С. П. Боткина Департамента здравоохранения города Москвы</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Russian Medical Academy of Continuous Professional Education</institution></aff><aff><institution xml:lang="ru">ФГБОУ ДПО «Российская медицинская академия непрерывного профессионального образования» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Российский национальный исследовательский медицинский университет им. Н. И. Пирогова»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-07-15" publication-format="electronic"><day>15</day><month>07</month><year>2023</year></pub-date><volume>22</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>27</fpage><lpage>33</lpage><history><date date-type="received" iso-8601-date="2023-07-15"><day>15</day><month>07</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-07-15"><day>15</day><month>07</month><year>2023</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://bioterapevt.abvpress.ru/jour/article/view/1387">https://bioterapevt.abvpress.ru/jour/article/view/1387</self-uri><abstract xml:lang="en"><p>Pancreatic cancer (PC) is a malignant highly aggressive tumor that arises and grows under conditions of inflammation and tissue hypoxia. In PC, one of the key processes in progression is epithelial-mesenchymal transition, which leads to early dissemination and rapid realization of metastatic disease, which accounts for low overall survival rates. The tumor, by releasing a wide range of different molecules (circulating DNA, exosomes, proteins and lipids), allows to identify and use them as potential, diagnostic and prognostic biomarkers.</p><p>This review introduces readers to the liquid biopsy technique. The main applications of the technique in patients with ductal adenocarcinoma of the pancreas are shown. Liquid biopsy is a modern diagnostic method of molecular oncology, the principle of which is to detect circulating tumor cells, DNA, exosomes in biological fluids. Publications evaluating the potential of the method to assess minimal residual disease, evaluate tumor response to systemic therapy, and determine prognosis are discussed. Liquid biopsy is particularly relevant in cases of malignant tumors of difficult localization, in particular, PC. Modern methods of morphological verification of pancreatic tumors (fine needle biopsy under endosonographic control and percutaneous biopsy) have essential disadvantages: low information value, multiple repeated interventions, postmanipulative complications (pancreatitis, bleeding, etc.). Taking into consideration obvious advantages and perspectives of this method over traditional methods of morphological verification, liquid biopsy seems to be a promising diagnostic tool in personalized oncology for pancreatic cancer.</p></abstract><trans-abstract xml:lang="ru"><p>Рак поджелудочной железы (РПЖ) – злокачественная высокоагрессивная опухоль, возникающая и растущая в условиях воспаления и тканевой гипоксии. При РПЖ одним из ключевых процессов в прогрессии опухоли является эпителиально-мезенхимальный переход, который приводит к ранней диссеминации и быстрой реализации метастатической болезни, что обусловливает низкие показатели общей выживаемости. Опухоль, высвобождая широкий спектр различных молекул (циркулирующую ДНК, экзосомы, протеины и липиды), позволяет идентифицировать и использовать их в качестве потенциальных диагностических и прогностических биомаркеров.</p><p>Данный обзор знакомит читателей с методикой жидкостной биопсии. Показаны основные направления применения метода у пациентов с протоковой аденокарциномой поджелудочной железы. Жидкостная биопсия – современный диагностический метод молекулярной онкологии, принцип которого заключается в определении циркулирующих опухолевых клеток, ДНК, экзосом в биологических жидкостях. Рассмотрены публикации, посвященные возможностям метода в оценке минимальной резидуальной болезни, оценке ответа опухоли на системную терапию и определении прогноза. Жидкостная биопсия особенно актуальна в случаях злокачественных опухолей труднодоступной локализации, в частности РПЖ. Современные методы морфологической верификации опухолей поджелудочной железы (тонкоигольная биопсия под эндосонографическим контролем и чрескожная биопсия) имеют существенные недостатки: низкая информативность, неоднократные повторные вмешательства, постманипуляционные осложнения (панкреатит, кровотечение и др.). Принимая во внимание очевидные преимущества жидкостной биопсии перед традиционными способами морфологической верификации, данный метод представляется перспективным диагностическим инструментом в персонализированной онкологии при РПЖ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>liquid biopsy</kwd><kwd>circulating tumor DNA</kwd><kwd>pancreatic cancer</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>жидкостная биопсия</kwd><kwd>циркулирующая опухолевая ДНК</kwd><kwd>рак поджелудочной железы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lippi G., Mattiuzzi C. The global burden of pancreatic cancer. Arch Med Sci 2020;16(4):820–4. DOI: 10.5114/AOMS.2020.94845</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Zhao R., Ren S., Li C. et al. Biomarkers for pancreatic cancer based on tissue and serum metabolomics analysis in a multicenter study. Cancer Med 2023;12(4):5158–71. 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