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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">gnck</journal-id><journal-title-group><journal-title xml:lang="ru">Колопроктология</journal-title><trans-title-group xml:lang="en"><trans-title>Koloproktologia</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7556</issn><issn pub-type="epub">2686-7303</issn><publisher><publisher-name>Russian Association of Coloproctology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33878/2073-7556-2024-23-4-10-16</article-id><article-id custom-type="elpub" pub-id-type="custom">gnck-1978</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>СТАТЬЯ НОМЕРА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LEADING ARTICLE</subject></subj-group></article-categories><title-group><article-title>Влияние вариации числа копий гена KRAS на результаты таргетной терапии колоректального рака</article-title><trans-title-group xml:lang="en"><trans-title>Correlation of the KRAS gene’s copy number variation and the results of targeted therapy for colorectal cancer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3820-7651</contrib-id><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>Vitaly P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шубин Виталий Павлович — к.б.н., старший научный сотрудник отдела лабораторной генетики</p><p>ул. Саляма Адиля, д. 2, г. Москва,  тел.: +7 (499) 199-54-71 </p></bio><bio xml:lang="en"><p>Vitaly P. Shubin </p><p>Salyama Adilya st., 2, Moscow, 123423 </p></bio><email xlink:type="simple">shubin_vp@gnck.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/0000-0001-9294-5447</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ачкасов</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Achkasov</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ачкасов Сергей Иванович — д.м.н., профессор, членкорр. РАН, директор; профессор кафедры колопроктологии</p><p>ул. Саляма Адиля, д. 2, г. Москва </p><p>ул. Баррикадная, д. 2/1, стр. 1, г. Москва </p></bio><bio xml:lang="en"><p>Sergey I. Achkasov </p><p>Salyama Adilya st., 2, Moscow, 123423 </p><p>Barrikadnaya st., 2/1, Moscow, 125993 </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/0000-0002-8480-9362</contrib-id><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>Шелыгин Юрий Анатольевич — д.м.н., профессор, академик РАН, научный руководитель; заведующий кафедрой колопроктологии</p><p>ул. Саляма Адиля, д. 2, г. Москва </p><p>ул. Баррикадная, д. 2/1, стр. 1, г. Москва </p></bio><bio xml:lang="en"><p>Yuri A. Shelygin </p><p>Salyama Adilya st., 2, Moscow, 123423 </p><p>Barrikadnaya st., 2/1, Moscow, 125993 </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/0000-0001-7203-1859</contrib-id><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>Пономаренко Алексей Алексеевич — д.м.н., ведущий научный сотрудник</p><p>ул. Саляма Адиля, д. 2, г. Москва </p></bio><bio xml:lang="en"><p>Aleksey A. Ponomarenko </p><p>Salyama Adilya st., 2, Moscow, 123423 </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/0000-0002-1443-960X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баринов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Barinov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баринов Алексей Андреевич — младший научный сотрудник отдела лабораторной генетики</p><p>ул. Саляма Адиля, д. 2, г. Москва </p></bio><bio xml:lang="en"><p>Aleksey A. Barinov</p><p>Salyama Adilya st., 2, Moscow, 123423 </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/0000-0002-7248-111X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Логинова</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Loginova</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Логинова Анна Николаевна — к.м.н., научный сотрудник отдела лабораторной генетики</p><p>ул. Саляма Адиля, д. 2, г. Москва </p></bio><bio xml:lang="en"><p>Anna N. Loginova </p><p>Salyama Adilya st., 2, Moscow, 123423 </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/0000-0002-1730-3070</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Арзамасцева</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Arzamastseva</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Арзамасцева Анна Игоревна — врач-онколог отделения лекарственной противоопухолевой терапии</p><p>ул. Саляма Адиля, д. 2, г. Москва </p></bio><bio xml:lang="en"><p>Anna I. Arzamastseva </p><p>Salyama Adilya st., 2, Moscow, 123423 </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/0000-0001-8571-7462</contrib-id><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>Цуканов Алексей Сергеевич — д.м.н., главный научный сотрудник отдела лабораторной генетики</p><p>ул. Саляма Адиля, д. 2, г. Москва </p></bio><bio xml:lang="en"><p>Aleksey S. Tsukanov </p><p>Salyama Adilya st., 2, Moscow, 123423 </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ колопроктологии имени А.Н. Рыжих» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ryzhikh National Medical Research Center of Coloproctology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ колопроктологии имени А.Н. Рыжих» Минздрава России ; ФГБОУ ДПО РМАНПО Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ryzhikh National Medical Research Center of Coloproctology ; Russian Medical Academy of Continuous Professional Education</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>21</day><month>12</month><year>2024</year></pub-date><volume>23</volume><issue>4</issue><fpage>10</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шубин В.П., Ачкасов С.И., Шелыгин Ю.А., Пономаренко А.А., Баринов А.А., Логинова А.Н., Арзамасцева А.И., Цуканов А.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Шубин В.П., Ачкасов С.И., Шелыгин Ю.А., Пономаренко А.А., Баринов А.А., Логинова А.Н., Арзамасцева А.И., Цуканов А.С.</copyright-holder><copyright-holder xml:lang="en">Shubin V.P., Achkasov S.I., Shelygin Y.A., Ponomarenko A.A., Barinov A.A., Loginova A.N., Arzamastseva A.I., Tsukanov A.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.ruproctology.com/jour/article/view/1978">https://www.ruproctology.com/jour/article/view/1978</self-uri><abstract><p>ЦЕЛЬ: определить предиктивное значение вариации числа копий гена KRAS (CNV_KRAS) для анти-EGFR терапии.ПАЦИЕНТЫ И МЕТОДЫ: исследовано 150 пациентов, из них 103 пациента с колоректальным раком (КРР) и диким типом RAS/BRAF и 39 пациентов — с колоректальным раком, с соматическими мутациями в гене KRAS, а также 8 пациентов не онкологического профиля (в качестве нормального контроля). Определение CNV_KRAS проводили с помощью цифровой капельной ПЦР.РЕЗУЛЬТАТЫ: для отказа от назначения таргетной анти-EGFR терапии установлен клинически значимый уровень CNV_KRAS ≥ 8,55 (9) копий. Частота клинически значимого уровня CNV_KRAS у пациентов с диким типом RAS/BRAF составила 17% (первая группа), с мутациями в гене KRAS — 3% (вторая группа). При I стадии КРР клинически значимое CNV_KRAS не выявлено ни в первой, ни во второй группе; при II стадии в первой группе — 14% (3/22), во второй не выявлено; при III стадии в первой группе — 21% (8/39), во второй не выявлено; при IV стадии в первой группе — 17% (6/35), во второй — 5% (1/20). Для определения клинически значимого уровня CNV_KRAS исследовалась ДНК опухоли 10 пациентов с IV стадией КРР из первой группы, получавших анти-EGFR терапию. Контроль болезни достигнут у 7 пациентов из 10. Показатель медианы CNV_KRAS у оставшихся трёх пациентов выше, чем в группе пациентов с контролем болезни, 9,2 (9,05; 10,10) и 5,38 (4,77; 7,35) (p = 0,017 (Wilcoxon rank sum exact test; Fisher’s exact test)).ЗАКЛЮЧЕНИЕ: обнаружение в злокачественной опухоли толстой кишки CNV_KRAS ≥ 9 копий является противопоказанием к назначению таргетной терапии, при этом у пациентов без соматических мутаций в генах RAS (KRAS, NRAS) и BRAF данный феномен встречается достоверно чаще, чем у пациентов с точковыми мутациями в гене KRAS (p = 0,02).</p></abstract><trans-abstract xml:lang="en"><p>BACKGROUND: to find predictive value of KRAS gene’s copy number variation (CNV_KRAS) to anti-EGFR therapy.PATIENTS AND METHODS: a prospective cohort single-center study included 150 patients, 103 patients with colorectal cancer (CRC) and wild-type RAS/BRAF, 39 patients with colorectal cancer with somatic mutations in the KRAS gene, as well as 8 non-oncological patients (as normal controls). CNV_KRAS was determined using digital droplet PCR.RESULTS: the clinically significant CNV_KRAS level of ≥ 9 copies established for a refusal of targeted anti-EGFR therapy. The incidence of clinically significant CNV_KRAS level in patients with wild-type RAS/BRAF was 17% (the first group of patients). Incidence of clinically significant CNV_KRAS level in patients with mutations in the KRAS gene was 3% (the second group of patients). At the I stage of CRC clinically significant CNV_KRAS was not detected in either the first or second group; at the stage II of CRC in the first group — in 14% of patients (3/22), and in the second group — not detected; at the stage III of CRC in the first group — in 21% of patients (8/39), and in the second group of patients — not detected; at the stage IV of CRC in the first group — in 17% (6/35) of patients, and in the second group of patients — in 5% (1/20). Tumor DNA was analyzed in 10 patients with the stage IV CRC from the first group who received anti-EGFR therapy to find out the clinically significant level of CNV_KRAS. Disease control was achieved in 7 out of 10 patients. The median CNV_KRAS score in the remaining three patients was higher than in the disease control group, 9.2 (9.05, 10.10) and 5.38 (4.77, 7.35) (p = 0.017).CONCLUSIONS: detection of CNV_KRAS level of ≥ 9 copies in a malignant colon tumor is a contraindication to targeted therapy. This phenomenon occurs significantly more often in patients without somatic mutations in the RAS genes (KRAS, NRAS) and BRAF, than in patients with point mutations in the KRAS gene (p = 0.02).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>колоректальный рак</kwd><kwd>вариация числа копий (CNV)</kwd><kwd>ген KRAS</kwd><kwd>таргетная терапия</kwd><kwd>анти-EGFR терапия</kwd><kwd>резистентность к таргетной терапии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>colorectal cancer</kwd><kwd>copy number variation (CNV)</kwd><kwd>KRAS gene</kwd><kwd>targeted therapy</kwd><kwd>anti-EGFR therapy</kwd><kwd>resistance to targeted therapy</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">Morris VK, Kennedy EB, Baxter NN, et al. Treatment of Metastatic Colorectal Cancer: ASCO Guideline. 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