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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">Oncohematology</journal-id><journal-title-group><journal-title xml:lang="en">Oncohematology</journal-title><trans-title-group xml:lang="ru"><trans-title>Онкогематология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1818-8346</issn><issn publication-format="electronic">2413-4023</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">800</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2023-18-1-63-75</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>BASIC RESEARCH</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ФУНДАМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ В ПРАКТИЧЕСКОЙ МЕДИЦИНЕ НА СОВРЕМЕННОМ ЭТАПЕ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Analysis of somatic mutations in the <italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic> and <italic>ASXL1</italic> genes and evaluation of their impact on the survival of patients with myelofibrosis</article-title><trans-title-group xml:lang="ru"><trans-title>Анализ соматических мутаций в генах <italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic> и <italic>ASXL1</italic> и оценка их влияния на выживаемость пациентов с миелофиброзом</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7790-5033</contrib-id><name-alternatives><name xml:lang="en"><surname>Subbotina</surname><given-names>T. N.</given-names></name><name xml:lang="ru"><surname>Субботина</surname><given-names>Т. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Tatiana Nikolaevna Subbotina</bold></p><p><italic>660041, Krasnoyarsk, Svobodnyy Prospekt, 79660037, Krasnoyarsk, Kolomenskaya St., 26</italic></p></bio><bio xml:lang="ru"><p><bold>Татьяна Николаевна Субботина</bold></p><p><italic>660041 Красноярск, пр-кт Свободный, 79660037 Красноярск, ул. Коломенская, 26</italic></p></bio><email>stn.25@mail.ru</email><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/0000-0003-1323-2612</contrib-id><name-alternatives><name xml:lang="en"><surname>Maslyukova</surname><given-names>I. E.</given-names></name><name xml:lang="ru"><surname>Маслюкова</surname><given-names>И. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660041, Krasnoyarsk, Svobodnyy Prospekt, 79660037, Krasnoyarsk, Kolomenskaya St., 26</italic></p></bio><bio xml:lang="ru"><p><italic>660041 Красноярск, пр-кт Свободный, 79660037 Красноярск, ул. Коломенская, 26</italic></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/0000-0002-8735-2716</contrib-id><name-alternatives><name xml:lang="en"><surname>Semashchenko</surname><given-names>K. S.</given-names></name><name xml:lang="ru"><surname>Семащенко</surname><given-names>К. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660041, Krasnoyarsk, Svobodnyy Prospekt, 79</italic></p></bio><bio xml:lang="ru"><p><italic>660041 Красноярск, пр-кт Свободный, 79</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4726-3102</contrib-id><name-alternatives><name xml:lang="en"><surname>Khodos</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Ходос</surname><given-names>Г. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660041, Krasnoyarsk, Svobodnyy Prospekt, 79</italic></p></bio><bio xml:lang="ru"><p><italic>660041 Красноярск, пр-кт Свободный, 79</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1063-7702</contrib-id><name-alternatives><name xml:lang="en"><surname>Kurochkin</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Курочкин</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660041, Krasnoyarsk, Svobodnyy Prospekt, 79660037, Krasnoyarsk, Kolomenskaya St., 26</italic></p></bio><bio xml:lang="ru"><p><italic>660041 Красноярск, пр-кт Свободный, 79660037 Красноярск, ул. Коломенская, 26</italic></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/0000-0002-2505-5978</contrib-id><name-alternatives><name xml:lang="en"><surname>Shalyova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Шалёва</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660041, Krasnoyarsk, Svobodnyy Prospekt, 79660037, Krasnoyarsk, Kolomenskaya St., 26</italic></p></bio><bio xml:lang="ru"><p><italic>660041 Красноярск, пр-кт Свободный, 79660037 Красноярск, ул. Коломенская, 26</italic></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/0000-0003-3769-3405</contrib-id><name-alternatives><name xml:lang="en"><surname>Mikhalev</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Михалёв</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660022, Krasnoyarsk, Partizana Zheleznyaka St., 3a</italic></p></bio><bio xml:lang="ru"><p><italic>660022 Красноярск, ул. Партизана Железняка, 3а</italic></p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3780-3758</contrib-id><name-alternatives><name xml:lang="en"><surname>Vasiliev</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Васильев</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660022, Krasnoyarsk, Partizana Zheleznyaka St., 3a</italic></p></bio><bio xml:lang="ru"><p><italic>660022 Красноярск, ул. Партизана Железняка, 3а</italic></p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4942-4299</contrib-id><name-alternatives><name xml:lang="en"><surname>Osadchaya</surname><given-names>M. G.</given-names></name><name xml:lang="ru"><surname>Осадчая</surname><given-names>М. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>660003, Krasnoyarsk, Akademika Pavlova St., 4, Build. 7</italic></p></bio><bio xml:lang="ru"><p><italic>660003 Красноярск, ул. Академика Павлова, 4, стр. 7</italic></p></bio><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4477-8506</contrib-id><name-alternatives><name xml:lang="en"><surname>Dunaeva</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Дунаева</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>111123, Moscow, Novogireevskaya St., 3a</italic></p></bio><bio xml:lang="ru"><p><italic>111123 Москва, ул. Новогиреевская, 3а</italic></p></bio><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5456-7649</contrib-id><name-alternatives><name xml:lang="en"><surname>Esman</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Есьман</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>111123, Moscow, Novogireevskaya St., 3a</italic></p></bio><bio xml:lang="ru"><p><italic>111123 Москва, ул. Новогиреевская, 3а</italic></p></bio><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8207-9215</contrib-id><name-alternatives><name xml:lang="en"><surname>Mironov</surname><given-names>K. O.</given-names></name><name xml:lang="ru"><surname>Миронов</surname><given-names>К. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>111123, Moscow, Novogireevskaya St., 3a</italic></p></bio><bio xml:lang="ru"><p><italic>111123 Москва, ул. Новогиреевская, 3а</italic></p></bio><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Siberian Federal University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Сибирский федеральный университет»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Federal Siberian Research and Clinical Center, Federal Medical and Biological Agency</institution></aff><aff><institution xml:lang="ru">ФГБУ «Федеральный Сибирский научно-клинический центр Федерального медико-биологического агентства»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">КГБУЗ «Краевая клиническая больница»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Krasnoyarsk Interdistrict Polyclinic No. 1</institution></aff><aff><institution xml:lang="ru">КГБУЗ «Красноярская межрайонная поликлиника №1»</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Central Research Institute of Epidemiology of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing</institution></aff><aff><institution xml:lang="ru">ФБУН «Центральный научно-исследовательский институт эпидемиологии» Федеральной службы по надзору в сфере защиты прав потребителей и благополучия человека</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2023</year></pub-date><volume>18</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>63</fpage><lpage>75</lpage><history><date date-type="received" iso-8601-date="2023-03-15"><day>15</day><month>03</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-03-15"><day>15</day><month>03</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://oncohematology.abvpress.ru/ongm/article/view/800">https://oncohematology.abvpress.ru/ongm/article/view/800</self-uri><abstract xml:lang="en"><p><bold>Background</bold>. The development of myelofibrosis (MF) is driven by complex molecular genetic events that include driver somatic mutations responsible for the constitutive activation of the JAK/STAT signaling pathway (<italic>JAK2</italic>, <italic>CALR</italic>, and <italic>MPL</italic>), additional mutations affecting epigenetic regulators (<italic>TET2</italic>, <italic>ASXL1</italic>, <italic>IDH1/2</italic>, etc.) and <italic>RNA</italic> splicing (<italic>SRSF2</italic>, <italic>U2AF1</italic>, <italic>SF3B1</italic>, etc.), as well as genetic aberrations that contribute to genomic instability and disease progression.</p><p><bold>Aim</bold>. To analyze driver (<italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic>) and prognostic (<italic>ASXL1</italic>) somatic mutations in patients with MF and evaluate their impact on survival.</p><p><bold>Materials and methods</bold>. The study included 29 patients diagnosed with MF, selected by hematologists from the City Clinical Hospital No. 7 and Regional Clinical Hospital (Krasnoyarsk).</p><p><bold>Results</bold>. 26 (89.6 %) out of 29 examined patients had some driver mutations in <italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic> genes. The p.V617F mutation in the <italic>JAK2</italic> gene was found in 20 (68.9 %) patients. Mutations in the <italic>CALR</italic> gene were detected in 4 (13.8 %) patients, mutations in the <italic>MPL</italic> gene were found in 3 patients (10.3 %). In 1 of 26 patients, 2 driver mutations were present simultaneously. 3 (10.3 %) patients were triple negative. Mutations in the <italic>ASXL1</italic> gene were detected in 12 (41.4 %) out of 29 examined patients. Conducted targeted NGS (next generation sequencing) for 13 out of 29 patients revealed additional genetic variants that contribute to the understanding of the development mechanism and disease course. When evaluating the overall survival in the groups of patients diagnosed with MF examined by us, depending on the combination of driver (<italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic>) and prognostic (<italic>ASXL1</italic>) mutations, no statistically significant differences were found (p = 0.12). This appears to be due to the small sample size. At the same time, assessment of patient survival depending on <italic>ASXL1</italic> status showed that in the presence of mutations in the <italic>ASXL1</italic> gene, the median survival was 45 months (range 7–120 months), while in the absence of mutations it was 48 months (range 21–359 months) (p = 0.03).</p><p><bold>Conclusion</bold>. The results obtained allow us to assume that the presence of mutations in the <italic>ASXL1</italic> gene is an unfavorable factor in the course of the disease.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение</bold>. Развитие миелофиброза (МФ) обусловлено сложными молекулярно-генетическими событиями, которые включают драйверные соматические мутации, ответственные за конститутивную активацию JAK/STAT-сигнального пути (<italic>JAK2</italic>, <italic>CALR</italic> и <italic>MPL</italic>), дополнительные мутации, затрагивающие эпигенетические регуляторы (<italic>TET2</italic>, <italic>ASXL1</italic>, <italic>IDH1/2</italic> и др.) и сплайсинг РНК (<italic>SRSF2</italic>, <italic>U2AF1</italic>, <italic>SF3B1</italic> и др.), а также генетические аберрации, способствующие геномной нестабильности и прогрессированию заболевания.</p><p><bold>Цель исследования</bold> – проанализировать драйверные (<italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic>) и прогностические (<italic>ASXL1</italic>) соматические мутации у пациентов с МФ и оценить их влияние на выживаемость.</p><p><bold>Материалы и методы</bold>. В исследование были включены 29 пациентов с МФ, отобранных врачами-гематологами Городской клинической больницы №7 и Краевой клинической больницы (Красноярск).</p><p><bold>Результаты</bold>. У 26 (89,6 %) из 29 обследованных пациентов выявлены какие-либо драйверные мутации в генах <italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic>. Мутация p.V617F в гене <italic>JAK2</italic> была обнаружена у 20 (68,9 %) пациентов. Мутации в гене <italic>CALR</italic> выявлены у 4 (13,8 %) пациентов, в гене <italic>MPL</italic> – у 3 (10,3 %). У 1 из 26 пациентов присутствовали одновременно 2 драйверные мутации. Тринегативными оказались 3 (10,3 %) пациента. Соматические мутации в гене <italic>ASXL1</italic> выявлены методом Сэнгера у 12 (41,4 %) из 29 обследованных пациентов. Проведение таргетного секвенирования нового поколения (NGS) для 13 из 29 пациентов позволило обнаружить дополнительные генетические варианты, способствующие пониманию механизма развития и течения заболевания. При оценке общей выживаемости в группах обследуемых пациентов с диагнозом МФ, проведенной в зависимости от сочетания драйверных (<italic>JAK2</italic>, <italic>CALR</italic>, <italic>MPL</italic>) и прогностических (<italic>ASXL1</italic>) мутаций, статистически значимых различий не выявлено (p = 0,12), что, по-видимому, обусловлено небольшим размером выборки. В то же время оценка выживаемости пациентов в зависимости от <italic>ASXL1</italic>-статуса показала, что при наличии мутаций в гене <italic>ASXL1</italic> медиана выживаемости составила 45 (7–120) мес, тогда как при отсутствии мутаций – 48 (21–359) мес (р = 0,03).</p><p><bold>Заключение</bold>. Полученные результаты позволяют предположить, что присутствие мутации в гене <italic>ASXL1</italic> является неблагоприятным фактором течения заболевания.</p></trans-abstract><kwd-group xml:lang="en"><kwd><italic>ASXL1</italic></kwd><kwd><italic>JAK2</italic></kwd><kwd><italic>CALR</italic></kwd><kwd><italic>MPL</italic></kwd><kwd>myelofibrosis</kwd><kwd>overall survival</kwd></kwd-group><kwd-group xml:lang="ru"><kwd><italic>ASXL1</italic></kwd><kwd><italic>JAK2</italic></kwd><kwd><italic>CALR</italic></kwd><kwd><italic>MPL</italic></kwd><kwd>миелофиброз</kwd><kwd>общая выживаемость</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Luque Paz D., Riou J., Verger E. et al. Genomic analysis of primary and secondary myelofibrosis redefines the prognostic impact of ASXL1 mutations: a FIM study. Blood Adv 2021;5(5):1442–51. 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