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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of Modern Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Journal of Modern Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная онкология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-1434</issn><issn publication-format="electronic">1815-1442</issn><publisher><publisher-name xml:lang="en">LLC Obyedinennaya Redaktsiya</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">693154</article-id><article-id pub-id-type="doi">10.26442/18151434.2026.1.203557</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Comparison of the efficacy of regorafenib and reintroduction of a combination of chemotherapy with anti-EGFR antibody in the third-line treatment of metastatic colorectal cancer with wild-type <italic>RAS</italic> and <italic>BRAF</italic> genes of left-sided localization – Results of a multicenter study of real-world practice</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнение эффективности терапии регорафенибом и реинтродукции комбинации химиотерапии с анти-EGFR-препаратами в 3-й линии лечения метастатического колоректального рака с диким типом генов <italic>RAS</italic> и <italic>BRAF</italic> левосторонней локализации. Результаты многоцентрового исследования реальной клинической практики</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-2856-5176</contrib-id><contrib-id contrib-id-type="spin">9668-5733</contrib-id><name-alternatives><name xml:lang="en"><surname>Kuzmina</surname><given-names>Evgeniya S.</given-names></name><name xml:lang="ru"><surname>Кузьмина</surname><given-names>Евгения Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Oncol.</p></bio><bio xml:lang="ru"><p>врач-онколог, химиотерапевт, зав. отд-нием химиотерапии №2</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5615-7806</contrib-id><contrib-id contrib-id-type="spin">4381-5628</contrib-id><name-alternatives><name xml:lang="en"><surname>Fedyanin</surname><given-names>Mikhail I.</given-names></name><name xml:lang="ru"><surname>Федянин</surname><given-names>Михаил Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Prof.</p></bio><bio xml:lang="ru"><p>д-р мед. наук, проф., рук. департамента науки, ст. науч. сотр. онкологического отд-ния лекарственных методов лечения (химиотерапевтического) №2 Научно-исследовательского института клинической онкологии им. акад. РАН и РАМН Н.Н. Трапезникова; зав. каф. онкологии; рук. службы химиотерапевтического лечения</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0340-7119</contrib-id><name-alternatives><name xml:lang="en"><surname>Feoktistova</surname><given-names>Polina S.</given-names></name><name xml:lang="ru"><surname>Феоктистова</surname><given-names>Полина Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, зав. химиотерапевтическим отд-нием №1; доц. каф. онкологии и онкохирургии</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff5"/><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9558-5579</contrib-id><contrib-id contrib-id-type="spin">8220-2854</contrib-id><name-alternatives><name xml:lang="en"><surname>Lyadova</surname><given-names>Marina A.</given-names></name><name xml:lang="ru"><surname>Лядова</surname><given-names>Марина Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, зав. химиотерапевтическим отд-нием №1; ассистент каф.</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5516-7367</contrib-id><contrib-id contrib-id-type="spin">1079-8460</contrib-id><name-alternatives><name xml:lang="en"><surname>Fedorinov</surname><given-names>Denis S.</given-names></name><name xml:lang="ru"><surname>Федоринов</surname><given-names>Денис Сергеевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, и.о. зав. онкологическим отд-нием противоопухолевой лекарственной терапии; науч. сотр. центра предиктивной генетики, фармакогенетики и персонализированной терапии; ассистент каф. онкологии и паллиативной медицины им. акад. А.И. Савицкого</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff4"/><xref ref-type="aff" rid="aff8"/><xref ref-type="aff" rid="aff9"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-9875-2525</contrib-id><name-alternatives><name xml:lang="en"><surname>Magamedova</surname><given-names>Olga R.</given-names></name><name xml:lang="ru"><surname>Магамедова</surname><given-names>Ольга Рамазановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Oncol.</p></bio><bio xml:lang="ru"><p>врач-онколог химиотерапевтического отд-ния №1</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-9954-4584</contrib-id><name-alternatives><name xml:lang="en"><surname>Parts</surname><given-names>Sergey A.</given-names></name><name xml:lang="ru"><surname>Партс</surname><given-names>Сергей Адольфович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, зам. глав. врача по медицинской части; доц. каф. онкологии и пластической хирургии Академии постдипломного образования</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff10"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-4402-5579</contrib-id><name-alternatives><name xml:lang="en"><surname>Polyanskiy</surname><given-names>Maxim A.</given-names></name><name xml:lang="ru"><surname>Полянский</surname><given-names>Максим Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, врач-онколог отд-ния химиотерапии №2</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-5416-0740</contrib-id><name-alternatives><name xml:lang="en"><surname>Fekhtel</surname><given-names>Egor P.</given-names></name><name xml:lang="ru"><surname>Фехтел</surname><given-names>Егор Павлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Oncol.</p></bio><bio xml:lang="ru"><p>врач-онколог дневного стационара противоопухолевой лекарственной терапии №2 центра амбулаторной онкологической помощи Центрального административного округа</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9864-3837</contrib-id><contrib-id contrib-id-type="spin">7338-9428</contrib-id><name-alternatives><name xml:lang="en"><surname>Pokataev</surname><given-names>Ilya A.</given-names></name><name xml:lang="ru"><surname>Покатаев</surname><given-names>Илья Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>д-р мед. наук, рук. центра клинических исследований, рук. службы химиотерапевтического лечения</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-9082-1755</contrib-id><name-alternatives><name xml:lang="en"><surname>Osipov</surname><given-names>Mikhail A.</given-names></name><name xml:lang="ru"><surname>Осипов</surname><given-names>Михаил Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, врач-онколог, врач-статистик организационно-методического кабинета</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff11"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7716-2238</contrib-id><name-alternatives><name xml:lang="en"><surname>Datsiuk</surname><given-names>Arina A.</given-names></name><name xml:lang="ru"><surname>Дацюк</surname><given-names>Арина Андреевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Oncol.</p></bio><bio xml:lang="ru"><p>врач-онколог 11-го онкологического отд-ния противоопухолевой лекарственной терапии дневного стационара</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff12"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0402-6067</contrib-id><name-alternatives><name xml:lang="en"><surname>Beliak</surname><given-names>Natalia P.</given-names></name><name xml:lang="ru"><surname>Беляк</surname><given-names>Наталья Петровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доц. каф. онкологии Медицинского института</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff13"/><xref ref-type="aff" rid="aff14"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4447-9458</contrib-id><name-alternatives><name xml:lang="en"><surname>Orlova</surname><given-names>Rashida V.</given-names></name><name xml:lang="ru"><surname>Орлова</surname><given-names>Рашида Вахидовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Prof.</p></bio><bio xml:lang="ru"><p>д-р мед. наук, проф., зав. каф. онкологии Медицинского института; гл. специалист по клинической онкологии</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff13"/><xref ref-type="aff" rid="aff14"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-6646-9442</contrib-id><name-alternatives><name xml:lang="en"><surname>Mgar'</surname><given-names>Ekaterina A.</given-names></name><name xml:lang="ru"><surname>Мгарь</surname><given-names>Екатерина Андреевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Oncol.</p></bio><bio xml:lang="ru"><p>врач-онколог отд-ния противоопухолевой лекарственной терапии №10</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff14"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-9658-3586</contrib-id><name-alternatives><name xml:lang="en"><surname>Kuzmin</surname><given-names>Vladislav M.</given-names></name><name xml:lang="ru"><surname>Кузьмин</surname><given-names>Владислав Максимович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Student</p></bio><bio xml:lang="ru"><p>студент</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff15"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8080-3011</contrib-id><name-alternatives><name xml:lang="en"><surname>Glazkova</surname><given-names>Elena V.</given-names></name><name xml:lang="ru"><surname>Глазкова</surname><given-names>Елена Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, рук. службы химиотерапевтического лечения – врач-онколог</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Antonova</surname><given-names>Tatiana G.</given-names></name><name xml:lang="ru"><surname>Антонова</surname><given-names>Татьяна Галяутдиновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Oncol.</p></bio><bio xml:lang="ru"><p>врач-онколог, зав. дневным стационаром противоопухолевой лекарственной терапии №1 центра амбулаторной онкологической помощи Северо-Восточного административного округа</p></bio><email>kuz011@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6619-6179</contrib-id><name-alternatives><name xml:lang="en"><surname>Galkin</surname><given-names>Vsevolod N.</given-names></name><name xml:lang="ru"><surname>Галкин</surname><given-names>Всеволод Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Prof.</p></bio><bio xml:lang="ru"><p>д-р мед. наук, проф., глав. врач</p></bio><email>vsgalkin@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Moscow State Budgetary Healthcare Institution "Moscow City Hospital named after S.S. Yudin, Moscow Healthcare Department"</institution></aff><aff><institution xml:lang="ru">ГБУЗ г. Москвы «Городская клиническая больница им. С.С. Юдина Департамента здравоохранения г. Москвы»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Blokhin National Medical Research Center of Oncology</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Pirogov National Medical and Surgical Center</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медико-хирургический центр им. Н.И. Пирогова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Moscow Multidisciplinary Clinical Center "Kommunarka"</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Московский многопрофильный клинический центр «Коммунарка»» Департамента здравоохранения г. Москвы</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Loginov Moscow Clinical Scientific Center</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Московский клинический научно-практический центр им. А.С. Логинова» Департамента здравоохранения г. Москвы</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Russian University of Medicine</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Российский университет медицины» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff7"><aff><institution xml:lang="en">Novokuznetsk State Institute for Further Training of Physicians – Branch Campus of the Russian Medical Academy of Continuous Professional Education</institution></aff><aff><institution xml:lang="ru">Новокузнецкий государственный институт усовершенствования врачей – филиал ФГБОУ ДПО «Российская медицинская академия непрерывного профессионального образования» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff8"><aff><institution xml:lang="en">Petrovskiy Russian Research Center of Surgery</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Российский научный центр хирургии им. акад. Б.В. Петровского»</institution></aff></aff-alternatives><aff-alternatives id="aff9"><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="aff10"><aff><institution xml:lang="en">Federal Research and Clinical Center of Specialized Types of Health Care and Medical Technology</institution></aff><aff><institution xml:lang="ru">ФГБУ «Федеральный научно-клинический центр специализированных видов медицинской помощи и медицинских технологий» ФМБА России</institution></aff></aff-alternatives><aff-alternatives id="aff11"><aff><institution xml:lang="en">Leningrad Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Ленинградская областная клиническая больница»</institution></aff></aff-alternatives><aff-alternatives id="aff12"><aff><institution xml:lang="en">Research Institute of Clinical Oncology "Nizhny Novgorod Regional Clinical Oncological Dispensary"</institution></aff><aff><institution xml:lang="ru">ГАУЗ НО «Научно-исследовательский институт клинической онкологии «Нижегородский областной клинический онкологический диспансер»»</institution></aff></aff-alternatives><aff-alternatives id="aff13"><aff><institution xml:lang="en">Saint Petersburg State University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Санкт-Петербургский государственный университет»</institution></aff></aff-alternatives><aff-alternatives id="aff14"><aff><institution xml:lang="en">City Clinical Oncological Dispensary</institution></aff><aff><institution xml:lang="ru">СПб ГБУЗ «Городской клинический онкологический диспансер»</institution></aff></aff-alternatives><aff-alternatives id="aff15"><aff><institution xml:lang="en">Sechenov First Moscow State Medical University (Sechenov University)</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Первый Московский государственный медицинский университет им. И.М. Сеченова» Минздрава России (Сеченовский Университет)</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-04-08" publication-format="electronic"><day>08</day><month>04</month><year>2026</year></pub-date><volume>28</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>37</fpage><lpage>45</lpage><history><date date-type="received" iso-8601-date="2025-10-14"><day>14</day><month>10</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2026-03-31"><day>31</day><month>03</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</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-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://modernonco.orscience.ru/1815-1434/article/view/693154">https://modernonco.orscience.ru/1815-1434/article/view/693154</self-uri><abstract xml:lang="en"><p><bold>Aim.</bold> To compare the efficacy and toxicity of regorafenib therapy and the repeated use of anti-EGFR monoclonal antibodies (mAb) combined with chemotherapy (CT) in the third-line treatment of patients with left-sided metastatic colorectal cancer (mCRC) with wild-type <italic>RAS</italic> and <italic>BRAF</italic> genes who received anti-EGFR targeted therapy in the first line of treatment.</p> <p><bold>Materials and methods.</bold> The database of patients with mCRC from 5 clinics in the Russian Federation was retrospectively analyzed. The study had 3 arms depending on the third-line therapy: regorafenib, reintroduction and rechallenge with the combination of CT and anti-EGFR mAb. In this paper, we present data comparing reintroduction and regorafenib therapy.</p> <p><bold>Results.</bold> 132 patients with morphologically confirmed left-sided mCRC with wild-type <italic>RAS</italic> and <italic>BRAF</italic> genes who received at least 3 lines of drug therapy from 2014 to 2023 were identified: the first-line therapy included anti-EGFR mAb; 61 patients were reintroduced with a combination of CT with anti-EGFR mAb, and 71 patients received regorafenib in the third-line therapy. Disease control in the reintroduction group was achieved in 43 (70.5%) patients, compared with 18 (25.5%) in the regorafenib group (<italic>p</italic> = 0.0001). The six-month overall survival (OS) was 76% in the reintroduction group and 55% in the regorafenib group. The median OS in the reintroduction group was 18 months (95% confidence interval [CI] 11.9-24.0 months) and 10 months in the regorafenib group (95% CI 5.3-14.6 months; <italic>p</italic> = 0.05 according to the log-rank test; <italic>p</italic> = 0.013 according to the Breslow-Wilcoxon test; <italic>p</italic> = 0.024 according to the Tarone-Ware test; risk ratio 1.1, 95% CI 0.886-1.408; <italic>p</italic> = 0.349). Progression-free survival (PFS) was higher in the CT reintroduction group with anti-EGFR mAb (6 months [95% CI 5.3-6.6 months] than in the regorafenib group (3 months [95% CI 2.2-3.7 months]; <italic>p</italic> = 0.0001 according to the log-rank test, risk ratio 1.23, 95% CI 0.997-1.529; <italic>p</italic> = 0.053). We found no difference in the incidence of all-grade adverse events between the study groups (<italic>p</italic> = 0.19), nor in the incidence of grade 3-4 adverse events (<italic>p</italic> = 0.781).</p> <p><bold>Conclusion.</bold> Compared with regorafenib therapy, re-administration of a combination of CT with anti-EGFR targeted therapy in the third-line treatment of patients with left-sided mCRC with wild-type <italic>RAS</italic> and <italic>BRAF</italic> genes was associated with a higher rate of disease control and better PFS and 6-month OS.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель.</bold> Сравнить эффективность и токсичность терапии регорафенибом и повторного применения анти-EGFR моноклональных антител (МАТ) в комбинации с химиотерапией (ХТ) в 3-й линии лечения пациентов с метастатическим колоректальным раком (мКРР) левосторонней локализации с диким типом генов <italic>RAS</italic> и <italic>BRAF</italic>, получивших в 1-й линии анти-EGFR таргетную терапию.</p> <p><bold>Материалы и методы.</bold> Проведен ретроспективный анализ базы пациентов с мКРР 5 клиник Российской Федерации. В исследовании было 3 рукава в зависимости от терапии 3-й линии: регорафениб, реинтродукция и речеллендж комбинации ХТ и анти-EGFR МАТ. В настоящей статье мы представляем данные по сравнению реинтродукции и терапии регорафенибом.</p> <p><bold>Результаты.</bold> Идентифицированы 132 пациента с морфологически подтвержденным мКРР левосторонней локализации с диким типом генов <italic>RAS</italic> и <italic>BRAF</italic>, получившие 3 линии лекарственной терапии или более с 2014 по 2023 г.: 1-я линия лечения включала анти-EGFR МАТ, в 3-й линии 61 пациенту проводили реинтродукцию комбинации ХТ с анти-EGFR МАТ, 71 пациент получал регорафениб. Контроль над заболеванием в группе реинтродукции описан у 43 (70,5%) пациентов против 18 (25,5%) в группе регорафениба (<italic>p</italic> = 0,0001). Шестимесячная общая выживаемость (ОВ) составила 76% в группе реинтродукции и 55% – в группе регорафениба. Медиана ОВ группе реинтродукции была 18 мес (95% доверительный интервал – ДИ 11,9–24,0 мес), в группе регорафениба – 10 мес (95% ДИ 5,3–14,6 мес; <italic>p</italic> = 0,05 – по log-rank-тесту; <italic>p</italic> = 0,013 – по критерию Бреслоу–Уилкоксона; <italic>p</italic> = 0,024 – по критерию Тарона–Вэра, отношение рисков 1,1, 95% ДИ 0,886–1,408; <italic>p</italic> = 0,349). Выживаемость без прогрессирования (ВБП) была выше в группе реинтродукции ХТ с анти-EGFR МАТ – 6 мес (95% ДИ 5,3–6,6 мес), чем в группе регорафениба – 3 мес (95% ДИ 2,2–3,7 мес; <italic>p</italic> = 0,0001 по log-rank-тесту, отношение рисков 1,23, 95% ДИ 0,997–1,529; <italic>p</italic> = 0,053). Мы не выявили различий в частоте нежелательных явлений всех степеней между исследуемыми группами (<italic>p</italic> = 0,19), а также в частоте развития нежелательных явлений 3–4-й степени (<italic>p</italic> = 0,781).</p> <p><bold>Заключение.</bold> В сравнении с терапией регорафенибом повторное назначение комбинации ХТ с анти-EGFR таргетной терапией в 3-й линии лечения пациентов с левосторонним мКРР с диким типом генов <italic>RAS</italic> и <italic>BRAF</italic> ассоциировано с большей частотой контроля болезни и лучшей ВБП и 6-месячной ОВ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>colorectal neoplasms</kwd><kwd>regorafenib</kwd><kwd>chemotherapy</kwd><kwd>anti-EGFR therapies</kwd><kwd>anti-EGFR monoclonal antibody</kwd><kwd>RAS/BRAF wild-type colorectal cancer</kwd><kwd>retrospective studies</kwd><kwd>real-world clinical practice study</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>колоректальный рак</kwd><kwd>регорафениб</kwd><kwd>химиотерапия</kwd><kwd>анти-EGFR-терапия</kwd><kwd>анти-EGFR моноклональное антитело</kwd><kwd>колоректальный рак с диким типом генов RAS и BRAF</kwd><kwd>ретроспективное исследование</kwd><kwd>исследования реальной клинической практики</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Grothey A, Van Cutsem E, Sobrero A, et al.; CORRECT Study Group. Regorafenib monotherapy for previously treated metastatic colorectal cancer (CORRECT): An international, multicentre, randomised, placebo-controlled, phase 3 trial. Lancet. 2013;381(9863):303-12. DOI:10.1016/S0140-6736(12)61900-X</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Van Cutsem E, Martinelli E, Cascinu S, et al. Regorafenib for patients with metastatic colorectal cancer who progressed after standard therapy: Results of the large, single-arm, open-label phase IIIb CONSIGN study. Oncologist. 2019;24(2): 185-92. DOI:10.1634/theoncologist.2018-0072</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Bekaii-Saab TS, Ou FS, Ahn DH. Regorafenib dose-optimisation in patients with refractory metastatic colorectal cancer (ReDOS): A randomised, multicentre, open-label, phase 2 study. Lancet Oncol. 2019;20(8):1070-82. DOI:10.1016/S1470-2045(19)30272-4</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Lai E, Puzzoni M, Ziranu P, et al.; GISCAD (Gruppo Italiano per lo Studio dei Carcinomi dell’Apparato Digerente, Italian Group for the Study of Gastrointestinal Tumors). Long term survival with regorafenib: REALITY (Real Life in Italy) Trial – A GISCAD study. Clin Colorectal Cancer. 2021;20(4):e253-62. DOI:10.1016/j.clcc.2021.07.008</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Dekker E, Tanis PJ, Vleugels JLA, et al. Colorectal cancer. Lancet. 2019;394(10207): 1467-80. DOI:10.1016/S0140-6736(19)32319-0</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Douillard JY, Siena S, Cassidy J, et al. Randomized, phase III trial of panitumumab with infusional fluorouracil, leucovorin, and oxaliplatin (FOLFOX4) versus FOLFOX4 alone as first-line treatment in patients with previously untreated metastatic colorectal cancer: The PRIME study. J Clin Oncol. 2010;28(31):4697-705. DOI:10.1200/JCO.2009.27.4860</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Rivera F, Karthaus M, Hecht JR, et al. Final analysis of the randomised PEAK trial: Overall survival and tumour responses during first-line treatment with mFOLFOX6 plus either panitumumab or bevacizumab in patients with metastatic colorectal carcinoma. Int J Colorectal Dis. 2017;32(8):1179-90. DOI:10.1007/s00384-017-2800-1</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Watanabe J, Muro K, Shitara K, et al. Panitumumab vs bevacizumab added to standard first-line chemotherapy and overall survival among patients with RAS wild-type, left-sided metastatic colorectal cancer: A randomized clinical trial. JAMA. 2023;329(15):1271-82. DOI:10.1001/jama.2023.4428. Erratum in: JAMA. 2023;329(24):2196. DOI:10.1001/jama.2023.10533</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Van Cutsem E, Lenz HJ, Köhne CH, et al. Fluorouracil, leucovorin, and irinotecan plus cetuximab treatment and RAS mutations in colorectal cancer. J Clin Oncol. 2015;33(7):692-700. DOI:10.1200/JCO.2014.59.4812</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Van Cutsem E, Köhne CH, Hitre E, et al. Cetuximab and chemotherapy as initial treatment for metastatic colorectal cancer. N Engl J Med. 2009;360(14):1408-17. DOI:10.1056/NEJMoa0805019</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Кузьмина Е.С., Федянин М.Ю., Лядова М.А., и др. Сравнение эффективности и безопасности терапии регорафенибом и анти-EGFR таргетной терапии при метастатическом колоректальном раке. Современная Онкология. 2024;26(3): 341-7 [Kuzmina ES, Fedyanin M, Lyadova MA, et al. Comparison of efficacy and safety of regorafenib and anti-EGFR targeted therapy in metastatic colorectal cancer: A retrospective study. Journal of Modern Oncology. 2024;26(3):341-7 (in Russian)]. DOI:10.26442/18151434.2024.3.202889</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Salvatore L, Bensi M, Vivolo R, et al. Efficacy of third-line anti-EGFR-based treatment versus regorafenib or trifluridine/tipiracil according to primary tumor site in RAS/BRAF wild-type metastatic colorectal cancer patients. Front Oncol. 2023;13:1125013. DOI:10.3389/fonc.2023.1125013</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Heinemann V, von Weikersthal LF, Decker T, et al. FOLFIRI plus cetuximab versus FOLFIRI plus bevacizumab as first-line treatment for patients with metastatic colorectal cancer (FIRE-3): A randomised, open-label, phase 3 trial. Lancet Oncol. 2014;15(10):1065-75. DOI:10.1016/S1470-2045(14)70330-4</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Schwartzberg LS, Rivera F, Karthaus M, et al. PEAK: A randomized, multicenter phase II study of panitumumab plus modified fluorouracil, leucovorin, and oxaliplatin (mFOLFOX6) or bevacizumab plus mFOLFOX6 in patients with previously untreated, unresectable, wild-type KRAS exon 2 metastatic colorectal cancer. J Clin Oncol. 2014;32(21):2240-7. DOI:10.1200/JCO.2013.53.2473</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Ciliberto D, Staropoli N, Caglioti F, et al. The best strategy for RAS wild-type metastatic colorectal cancer patients in first-line treatment: A classic and Bayesian metaanalysis. Crit Rev Oncol Hematol. 2018;125:69-77. DOI:10.1016/j.critrevonc.2018.03.003</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Cascinu S, Rosati G, Nasti G, et al.; GISCAD investigators. Treatment sequence with either irinotecan/cetuximab followed by FOLFOX-4 or the reverse strategy in metastatic colorectal cancer patients progressing after first-line FOLFIRI/bevacizumab: An Italian Group for the Study of Gastrointestinal Cancer phase III, randomised trial comparing two sequences of therapy in colorectal metastatic patients. Eur J Cancer. 2017;83:106-15. DOI:10.1016/j.ejca.2017.06.029</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Xu J, Xu RH, Qin S, et al. Regorafenib in Chinese patients with metastatic colorectal cancer: Subgroup analysis of the phase 3 CONCUR trial. J Gastroenterol Hepatol. 2020;35(8):1307-16. DOI:10.1111/jgh.14974</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Matsumoto T, Ikoma T, Yamamura S, et al. Regorafenib is suitable for advanced colorectal cancer patients who have previously received trifluridine/tipiracil plus bevacizumab. Sci Rep. 2023;13:2433. DOI:10.1038/s41598-023-29706-6</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Федянин М.Ю., Трякин A.A., Тюляндин C.A. Метаанализ исследований по оценке эффективности продолжения применения антиангиогенных препаратов во 2-й линии терапии больных метастатическим раком толстой кишки в зависимости от мутационного статуса гена KRAS. Онкологическая колопроктология. 2018;8(2):38-45 [Fedyanin MYu, Tryakin AA, Tjulandin SA. Efficacy of continuing anti-angiogenic agents in the second-line treatment for metastatic colon cancer depending on the KRAS mutation status: A metaanalysis. Onkologicheskaya Koloproktologiya = Colorectal Oncology. 2018;8(2): 38-45 (in Russian)]. DOI:10.17650/2220-3478-2018-8-2-38-45</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Pfeiffer P, Yilmaz M, Möller S, et al. TAS-102 with or without bevacizumab in patients with chemorefractory metastatic colorectal cancer: An investigator-initiated, open-label, randomised, phase 2 trial. Lancet Oncol. 2020;21(3):412-20. DOI:10.1016/S1470-2045(19)30827-7</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Shitara K, Yamanaka T, Denda T, et al. REVERCE: A randomized phase II study of regorafenib followed by cetuximab versus the reverse sequence for previously treated metastatic colorectal cancer patients. Ann Oncol. 2019;30(2):259-65. DOI:10.1093/annonc/mdy526</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>Cremolini C, Ciracì P, Pietrantonio F, et al. Panitumumab retreatment followed by regorafenib versus the reverse sequence in chemorefractory metastatic colorectal cancer patients with RAS and BRAF wild-type circulating tumor DNA (ctDNA): Results of the phase II randomized PARERE trial by GONO. J Clin Oncol. 2025;43: LBA3515-LBA3515. DOI:10.1200/JCO.2025.43.17_suppl.LBA3515</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>Vivas CS, Barrull JV, Rodriguez CF, et al. 511MO Third line rechallenge with cetuxi-mab (Cet) and irinotecan in circulating tumor DNA (ctDNA) selected metastatic colorectal cancer (mCRC) patients: The randomized phase II CITRIC trial. Ann Oncol. 2024;35:S433-4. DOI:10.1016/j.annonc.2024.08.580</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>CITRIC Trial Results at ESMO 2025: ctDNA-Guided Anti-EGFR Rechallenge in Metastatic Colorectal Cancer. Available at: https://oncodaily.com/oncolibrary/ citric-trial-colorectal-cancer-esmo25. Accessed: 05.08.2025.</mixed-citation></ref><ref id="B25"><label>25.</label><mixed-citation>Price TJ, Peeters M, Kim TW, et al. Panitumumab versus cetuximab in patients with chemotherapy-refractory wild-type KRAS exon 2 metastatic colorectal cancer (ASPECCT): A randomised, multicentre, open-label, non-inferiority phase 3 study. Lancet Oncol. 2014;15(6):569-79. DOI:10.1016/S1470-2045(14)70118-4</mixed-citation></ref><ref id="B26"><label>26.</label><mixed-citation>Peeters M, Oliner KS, Price TJ, et al. Analysis of KRAS/NRAS mutations in a phase III study of panitumumab with FOLFIRI compared with FOLFIRI alone as second-line treatment for metastatic colorectal cancer. Clin Cancer Res. 2015;21(24):5469-79. DOI:10.1158/1078-0432.CCR-15-0526</mixed-citation></ref><ref id="B27"><label>27.</label><mixed-citation>Sakai D, Taniguchi H, Sugimoto N, et al. Randomised phase II study of panitumumab plus irinotecan versus cetuximab plus irinotecan in patients with KRAS wild-type metastatic colorectal cancer refractory to fluoropyrimidine, irinotecan and oxaliplatin (WJOG 6510G). Eur J Cancer. 2020;135:11-21. DOI:10.1016/j.ejca.2020.04.014</mixed-citation></ref><ref id="B28"><label>28.</label><mixed-citation>Casadei-Gardini A, Vagheggini A, Gelsomino F, et al. Is there an optimal choice in refractory colorectal cancer? A network meta-analysis. Clin Colorectal Cancer. 2020;19(2):82-90.e9. DOI:10.1016/j.clcc.2019.10.001</mixed-citation></ref><ref id="B29"><label>29.</label><mixed-citation>Santini D, Vincenzi B, Addeo R, et al. Cetuximab rechallenge in metastatic colorectal cancer patients: How to come away from acquired resistance? Ann Oncol. 2012;23(9):2313-8. DOI:10.1093/annonc/mdr623. Erratum in: Ann Oncol. 2017;28(11):2906. DOI:10.1093/annonc/mdw551</mixed-citation></ref><ref id="B30"><label>30.</label><mixed-citation>Cremolini C, Rossini D, Dell’Aquila E, et al. Rechallenge for patients with RAS and BRAF wild-type metastatic colorectal cancer with acquired resistance to first-line cetuximab and irinotecan: A phase 2 single-arm clinical trial. JAMA Oncol. 2019;5(3):343-50. DOI:10.1001/jamaoncol.2018.5080</mixed-citation></ref></ref-list></back></article>
