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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">tumors</journal-id><journal-title-group><journal-title xml:lang="ru">Malignant tumours</journal-title><trans-title-group xml:lang="en"><trans-title>Malignant tumours</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2224-5057</issn><issn pub-type="epub">2587-6813</issn><publisher><publisher-name>Rosoncoweb</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18027/2224-5057-2021-11-3-5-14</article-id><article-id custom-type="elpub" pub-id-type="custom">tumors-915</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group></article-categories><title-group><article-title>Удаление метастазов при метастатическом раке толстой кишки с мутацией в гене BRAF — результаты много‑ центрового ретроспективного исследования</article-title><trans-title-group xml:lang="en"><trans-title>Resection of metastases in patients with BRAF mutated metastatic colon cancer: results of a multicenter retrospective study</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федянин</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedyanin</surname><given-names>M.  Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p> Mikhail Yu. Fedyanin, MD, PhD, DSc, Senior Researcher, Oncology Department of Drug Therapy (Chemotherapy) No.2</p><p> Moscow</p></bio><email xlink:type="simple">fedianinmu@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Эльснукаева</surname><given-names>Х. Х.‑М.</given-names></name><name name-style="western" xml:lang="en"><surname>Elsnukaeva</surname><given-names>H. H.‑M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Heda H.‑M. Elsnukaeva, Postgraduate Student Breast Cancer Department of Drug Therapy (Chemotherapy) No. 2</p><p> Moscow</p></bio><email xlink:type="simple">elsnukaeva1992@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демидова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Demidova</surname><given-names>I.  A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Irina A. Demidova, MD, PhD, Head of the Laboratory of Molecular Biology</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Строяковский</surname><given-names>Д. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Stroyakovskii</surname><given-names>D.  L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Daniil L. Stroyakovskii, MD, PhD, Head of the Chemotherapy Department</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шелыгин</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shelygin</surname><given-names>Yu.  A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Yurii A. Shelygin, MD, PhD, DSc, Prof., Academician of the Russian Academy of Sciences, Scientific Director</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цуканов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsukanov</surname><given-names>A.  S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Aleksey S. Tsukanov, MD, PhD, DSc, Leading Researcher, Head of the Laboratory Genetics Department</p><p> Moscow </p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сергеев</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sergeev </surname><given-names>Yu.  S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Yurii S. Sergeev, MD, PhD, Oncologist at the Surgical Departmen</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пономаренко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponomarenko</surname><given-names>A.  A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Aleksey A. Ponomarenko, MD, PhD, DSc, Leading Researcher of the 3th Surgical Department (Rectal Oncology)</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Панина</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Panina</surname><given-names>M.  V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Maria V. Panina, MD, PhD, Oncologist of the Department of Anticancer Chemotherapy</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шубин</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Shubin</surname><given-names>V.  P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Vitaliy P. Shubin, MD, PhD biol., Senior Researcher</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Моисеенко</surname><given-names>Ф. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Moiseenko</surname><given-names>F.  V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Санкт-Петербург </p></bio><bio xml:lang="en"><p> Fyodor V. Moiseenko, MD, PhD, DSc, Head of Chemotherapy Department</p><p> Saint Petersburg </p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпенко</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpenko </surname><given-names>E.  Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва </p></bio><bio xml:lang="en"><p> Elena Yu. Karpenko, Junior Researcher, Chemotherapy Department, Department of Tumor Drug Treatment</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Болотина</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bolotina</surname><given-names>L.  V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p> Larisa V. Bolotina, MD, PhD, DSc, Head of the Chemotherapy Department</p><p> Moscow </p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудрявцева</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudriavtseva </surname><given-names>A.  V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p> Anna V. Kudriavtseva, MD, PhD biol., Researcher, Department of Pathology</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Филипенко</surname><given-names>М. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Filipenko</surname><given-names>M.  L.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Новосибирск </p></bio><bio xml:lang="en"><p> Maksim L. Filipenko, MD, PhD biol., Chief Researcher, Head of the Pharmacogenomics Laboratory</p><p>Novosibirsk </p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воскобоев</surname><given-names>М. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Voskoboev</surname><given-names>M.  E.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Новосибирск </p></bio><bio xml:lang="en"><p> Mikhail E. Voskoboev</p><p> Novosibirsk </p></bio><xref ref-type="aff" rid="aff-7"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Оскорбин</surname><given-names>И. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Oskorbin</surname><given-names>I.  P.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Ростов-на-Дону </p></bio><bio xml:lang="en"><p> Igor P. Oskorbin, MD, PhD biol., Junior Researcher, Pharmacogenomics Laboratory</p><p>Rostov‑on‑Don </p></bio><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Владимирова</surname><given-names>Л. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Vladimirova</surname><given-names>L.  Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Ростов-на-Дону </p></bio><bio xml:lang="en"><p> Lubov Yu. Vladimirova, MD, PhD, DSc, Professor, Head of the Department of Tumor Drug Treatment</p><p>Rostov‑on‑Don </p></bio><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><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> Ростов-на-Дону </p></bio><bio xml:lang="en"><p> Oleg I. Kit, MD, PhD, DSc, Professor, Honored Doctor of the Russian Federation, General Director</p><p>Rostov‑on‑Don </p></bio><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Строганова</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Stroganova</surname><given-names>A.  M.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p> Anna M. Stroganova, MD, PhD, Head of the Molecular Biology Laboratory, Department of Morphological and MolecularGenetic Diagnostics of Tumors, Research Institute of Clinical Oncology</p><p> Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дранко</surname><given-names>С. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Dranko</surname><given-names>S.  L.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p> Svetlana L. Dranko, Laboratory Geneticist, Molecular Biology Laboratory,</p><p> Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сендерович</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Senderovich</surname><given-names>A.  I.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p> Anastasiya I. Senderovich, MD, PhD, Laboratory Geneticist, Laboratory of Immunomorphology and Molecular Genetics</p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трякин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tryakin</surname><given-names>A.  A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p> Alexey A. Tryakin, MD, PhD, DSc, Chief Researcher, Oncology Department of Drug Therapy (Chemotherapy) No. 2</p><p> Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюляндин</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tjulandin </surname><given-names>S.  A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Москва </p></bio><bio xml:lang="en"><p>Sergei A. Tjulandin, MD, PhD, DSc, Prof., Head of the Oncology Department, of Drug Therapy (Chemotherapy) No. 2</p><p> Moscow</p></bio><email xlink:type="simple">stjulandin@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ онкологии им. Н. Н. Блохина» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N. N. Blokhin National Medical Research Center of Oncology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московская городская онкологическая больница №62 ДЗ г. Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Municipal Oncological Hospital No. 62, Moscow Department of Health</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБУ «Государственный научный центр колопроктологии им. А. Н. Рыжих» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center of Coloproctology named after A. N. Ryzhikh</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ГБУЗ «Санкт-Петербургский клинический научно-практический центр специализированных видов медицинской помощи&#13;
(онкологический)»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Clinical Research and Practice Centre for Specialized Care (Oncological)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>МНИОИ им. П. А. Герцена — филиал ФГБУ «НМИЦ радиологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P. Hertsen Moscow Oncology Research Institute — Branch of the National Medical Research Radiological Centre</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Институт химической биологии и фундаментальной медицины Сибирского отделения РАН</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru"><institution>Новосибирский государственный университет</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>Novosibirsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-8"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ онкологии» Минздрава России</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-9"><aff xml:lang="ru"><institution>ФГБУ «ЦКБ с поликлиникой» Управления делами Президента РФ</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>Central Clinical Hospital with Polyclinic</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>04</day><month>01</month><year>2022</year></pub-date><volume>11</volume><issue>3</issue><fpage>5</fpage><lpage>14</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Федянин М.Ю., Эльснукаева Х.Х., Демидова И.А., Строяковский Д.Л., Шелыгин Ю.А., Цуканов А.С., Сергеев Ю.С., Пономаренко А.А., Панина М.В., Шубин В.П., Моисеенко Ф.В., Карпенко Е.Ю., Болотина Л.В., Кудрявцева А.В., Филипенко М.Л., Воскобоев М.Е., Оскорбин И.П., Владимирова Л.Ю., Кит О.И., Строганова А.М., Дранко С.Л., Сендерович А.И., Трякин А.А., Тюляндин С.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Федянин М.Ю., Эльснукаева Х.Х., Демидова И.А., Строяковский Д.Л., Шелыгин Ю.А., Цуканов А.С., Сергеев Ю.С., Пономаренко А.А., Панина М.В., Шубин В.П., Моисеенко Ф.В., Карпенко Е.Ю., Болотина Л.В., Кудрявцева А.В., Филипенко М.Л., Воскобоев М.Е., Оскорбин И.П., Владимирова Л.Ю., Кит О.И., Строганова А.М., Дранко С.Л., Сендерович А.И., Трякин А.А., Тюляндин С.А.</copyright-holder><copyright-holder xml:lang="en">Fedyanin M.Y., Elsnukaeva H.H., Demidova I.A., Stroyakovskii D. ., Shelygin Y.A., Tsukanov A.S., Sergeev  Y.S., Ponomarenko A.A., Panina M.V., Shubin V.P., Moiseenko F.V., Karpenko  E.Y., Bolotina L.V., Kudriavtseva  A.V., Filipenko M.L., Voskoboev M.E., Oskorbin I.P., Vladimirova L.Y., Kit O. ., Stroganova A.M., Dranko S. ., Senderovich A. ., Tryakin A.A., Tjulandin  S. .</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.malignanttumors.org/jour/article/view/915">https://www.malignanttumors.org/jour/article/view/915</self-uri><abstract><sec><title>Цель</title><p>Цель: Локальные методы лечения метастазов являются неотъемлемой частью терапии больных раком толстой кишки. Однако данных по эффективности хирургического удаления метастазов при мутации в гене BRAF недостаточно, чтобы рекомендовать данный подход в рутинной практике. Нами инициировано ретроспективное многоцентровое исследование по оценки встречаемости мутаций в гене BRAF при метастатическом раке толстой кишки, в рамках которого изучена эффективность метастазэктомии в этой группе пациентов.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы: Из базы данных пациентов с мутацией в гене BRAF, созданной в результате многоцентрового ретроспективного исследования с участием 7 клиник Российской Федерации, были отобраны все пациенты, которым проводилось хирургическое удаление метастазов различной локализации. С целью сравнительного анализа из регистра отделения химиотерапии № 2 НМИЦ онкологии им. Н. Н. Блохина были отобраны все 57 пациентов с мутацией в генах RAS и 43 пациента с диким типом генов RAS и BRAF, которым также проводилось хирургическое удаление метастазов на любом из этапов лечения. В качестве основных критериев эффективности рассматривались выживаемость без признаков болезни и общая выживаемость.</p></sec><sec><title>Результаты</title><p>Результаты: Было найдено 26 больных с мутацией в гене BRAF, которым выполнялось хирургическое удаление метастазов. При сравнении выживаемости без признаков болезни наихудший показатель медианы был достигнут в группе пациентов с мутацией в гене BRAF — 7 месяцев против 14 месяцев при мутации в генах RAS (ОР 0,4, 94% ДИ 0,23–0,7, р=0,006); медиана выживаемости без признаков болезни в группе с диким типом генов RAS и BRAF не была достигнута (ОР 0,2, 95 % ДИ 0,11–0,45, р&lt;0,001). Медиана общей выживаемости в группе с мутацией в гене BRAF составила 26 месяцев против 38 месяцев в группе с мутацией в генах RAS (ОР 0,8, 95% ДИ 0,33–1,98, р=0,6) и 49 месяцев в группе wtRAS/wtBRAF (ОР 0,46, 95% ДИ 0,17–1,24, р=0,1). Удаление рецидивных опухолей и при поражении забрюшинных лимфоузлов метастазами было ассоциировано с крайне низкой выживаемостью без признаков болезни (2 месяца), тогда как при удалении изолированных метастазов в печени она составила 7 месяцев, в брюшине — 8 месяцев.</p></sec><sec><title>Выводы</title><p>Выводы: Прогноз больных с мутацией в гене BRAF после хирургического удаления метастазов хуже в сравнении с пациентами с другим мутационным фенотипом. Тем не менее, данные литературы, а также результаты нашего исследования подтверждают возможность выполнения метастазэктомии при тщательным отборе пациентов.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction: local treatment of metastases is an integral part of colon cancer treatment. However, there is not enough data on the efficacy of surgical resection of metastases in patients with a BRAF gene mutation to recom‑mend this approach in routine practice. We initiated a retrospective multicenter study to assess the incidence of BRAF gene mutations in patients with metastatic colon cancer and to study the efficacy of metastasectomy in this group of patients.</p></sec><sec><title>Materials and methods</title><p>Materials and methods: we selected all patients who underwent surgical resection of metastases in various sites from the database of patients with BRAF gene mutations created as a result of a multicenter retrospective study with participation of 7 clinics in the Russian Federation. All 57 patients with RAS gene mutations and 43 patients with wild‑type RAS and BRAF genes who also underwent surgical resection of metastases at any stage of treatment were selected from the register of the Chemotherapy Department No. 2 of the NMRC of Oncology named after N. N. Blokhin for comparative analysis. Disease‑free survival and overall survival were used as primary efficacy criteria.</p></sec><sec><title>Results</title><p>Results: we found 26 patients with BRAF gene mutations who underwent surgical resection of metastases. When comparing disease‑free survival, the worst median was achieved in the group of patients with BRAF gene mutations: 7 months versus 14 months in patients with RAS gene mutations (HR 0.4, 94 % CI 0.23–0.7, P = 0.006); median disease‑free survival was not achieved in the wild‑type RAS and BRAF group (HR 0.2, 95 % CI 0.11–0.45, P &lt;0.001).</p><p>The median overall survival in the BRAF gene mutation group was 26 months versus 38 months in the RAS gene mutations group (HR 0.8, 95 % CI 0.33–1.98, P = 0.6) and 49 months in the wtRAS/wtBRAF group (RR 0.46, 95 % CI 0.17–1.24, P = 0.1). Resection of recurrent tumors in patients with metastases in retroperitoneal lymph nodes was associated with extremely low disease‑free survival (2 months); at the same time, disease‑free survival was 7 months after resection of isolated metastases in the liver and 8 months for metastases in the peritoneum.</p></sec><sec><title>Conclusion</title><p>Conclusion: prognosis of patients with a BRAF gene mutation after surgical resection of metastases is worse than in patients with a different mutation phenotype. Nevertheless, literature data, as well as the results of our study, confirm the possibility of performing metastasectomy with careful selection of patients.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>рак толстой кишки</kwd><kwd>метастазэктомия</kwd><kwd>BRAF</kwd></kwd-group><kwd-group xml:lang="en"><kwd>colon cancer</kwd><kwd>metastasectomy</kwd><kwd>BRAF gene mutation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Engstrand J, Nilsson H, Strömberg C, et al. Colorectal cancer liver metastases – a population-based study on incidence, management and survival. BMC Cancer. 2018; 18: 78.</mixed-citation><mixed-citation xml:lang="en">Engstrand J, Nilsson H, Strömberg C, et al. Colorectal cancer liver metastases – a population-based study on incidence, management and survival. 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