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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">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">419</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2020-19-4-58-65</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Low-grade gliomas with the V600E mutation in the BRAF gene in children: clinical features and treatment options</article-title><trans-title-group xml:lang="ru"><trans-title>Глиомы низкой степени злокачественности с мутацией V600E в гене BRAF у детей: особенности клинического течения и возможности терапии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7750-5216</contrib-id><name-alternatives><name xml:lang="en"><surname>Papusha</surname><given-names>L. I.</given-names></name><name xml:lang="ru"><surname>Папуша</surname><given-names>Л. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Ludmila I. Papusha, </bold>Cand. of Sci. (Med.), Senior Physician, Head of the Department of Optimization of CNS Tumor Therapy</p><p>1 Samory Mashela St., Moscow 117997 </p></bio><bio xml:lang="ru"><p><bold>Папуша Людмила Ивановна, </bold>канд. мед. наук, врач-детский онколог, заведующая отделом оптимизации терапии опухолей центральной нервной системы </p><p>117997, Москва, ул. Саморы Машела, 1 </p></bio><email>ludmila.mur@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2977-665X</contrib-id><name-alternatives><name xml:lang="en"><surname>Valiakhmetova</surname><given-names>E. F.</given-names></name><name xml:lang="ru"><surname>Валиахметова</surname><given-names>Э. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Druy</surname><given-names>A. E.</given-names></name><name xml:lang="ru"><surname>Друй</surname><given-names>А. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3007-3772</contrib-id><name-alternatives><name xml:lang="en"><surname>Yasko</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Ясько</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7578-9657</contrib-id><name-alternatives><name xml:lang="en"><surname>Voronin</surname><given-names>K. A.</given-names></name><name xml:lang="ru"><surname>Воронин</surname><given-names>К. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zaitseva</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Зайцева</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9846-2793</contrib-id><name-alternatives><name xml:lang="en"><surname>Salnikova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Сальникова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Raikina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Райкина</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2322-5734</contrib-id><name-alternatives><name xml:lang="en"><surname>Novichkova</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Новичкова</surname><given-names>Г. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karachunsky</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Карачунский</surname><given-names>А. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">N.N. Burdenko National Medical Research Center of Neurosurgery, Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><aff id="aff3"><institution>Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Healthcare of the Russian Federation</institution></aff><pub-date date-type="pub" iso-8601-date="2020-12-08" publication-format="electronic"><day>08</day><month>12</month><year>2020</year></pub-date><volume>19</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>58</fpage><lpage>65</lpage><history><date date-type="received" iso-8601-date="2020-12-20"><day>20</day><month>12</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-12-20"><day>20</day><month>12</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hemoncim.com/jour/article/view/419">https://hemoncim.com/jour/article/view/419</self-uri><abstract xml:lang="en"><p>The main pathogenetic mechanism of the development of pediatric low grade gliomas (pLGGs) is genetic aberrations in BRAF<italic> </italic>gene. This study is supported by the Independent Ethics Committee and approved by the Academic Council of the Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology, and Immunology. We analyzed the clinical and molecular characteristics of 69 patients with LGGs. Molecular genetic testing for BRAF V600E mutation was performed by allele-specific real-time PCR and Sanger sequencing. BRAF V600E mutation was detected in 15 (21.7%) patients with LGG. The majority of BRAF-mutated cases of LGGs had the midline location: OPG – 7, subcortical ganglia – 1, brainstem – 2. The 2-year PFS was much worse in patients with BRAF V600E compared to patients without this mutation – 30% and 66.2%, respectively. The median time to progression for patients with BRAF V600E mutation was 9.5 months compared to 3.1 years for patients without indicated substitution. 5 patients with BRAF V600E-mutated LGGs who experienced progression after the conventional treatment, received targeted therapy (BRAF-inhibitor-3, BRAF + MEK inhibitors – 2) with good response (complete response – 2, partial response – 3). BRAF V600E mutation contributes to poor outcome in patients with LGGs Targeted therapy could be effective in this cohort of patients.</p></abstract><trans-abstract xml:lang="ru"><p>Основным патогенетическим механизмом развития глиом низкой степени злокачественности (ГНСЗ) является активация сигнального пути MAPK, потенцированная генетическими аберрациями в гене <italic>BRAF</italic>. Цель: провести анализ частоты встречаемости мутации V600E в гене <italic>BRAF</italic><italic> </italic>у детей с ГНСЗ, а также особенностей клинического течения заболевания у этих пациентов и возможностей использования таргетной терапии. Данное исследование одобрено независимым этическим комитетом и утверждено решением ученого совета ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России. В работе проанализированы клинические и молекулярно-генетические характеристики 69 пациентов с ГНСЗ. Определение мутации в гене <italic>BRAF</italic><italic> </italic>было выполнено методом аллель-специфичной полимеразной цепной реакции в режиме реального времени с проверкой результатов методом секвенирования по Сэнгеру. Мутация V600E в гене <italic>BRAF</italic><italic> </italic>выявлена у 15 (21,7%) из 69 пациентов. У большинства больных с наличием мутации опухоль локализовалась в срединных структурах: хиазмально-селлярной области (<italic>n</italic><italic> </italic>= 7), подкорковых узлах (<italic>n</italic><italic> </italic>= 1) и стволе головного мозга (<italic>n</italic><italic> </italic>= 2). В группе пациентов с мутацией V600E в гене <italic>BRAF</italic><italic> </italic>2-летняя выживаемость без прогрессии составила 30,0% (13,0, 69,4), в группе пациентов без мутации – 66,2% (50,7, 86,6). Продолженный рост/рецидив заболевания после стандартной терапии выявлен у 10 (66,7%) из 15 пациентов в группе с мутацией и у 18 (33,3%) из 54 – в группе без мутации. Медиана времени наблюдения в группе с мутацией составила 1 год 11 мес, в группе без мутации – 1 год 7 мес. Медиана времени до продолженного роста/рецидива в группе с мутацией составила 9,5 мес, без мутации – 3 года 1 мес (<italic>p</italic><italic> </italic>= 0,001). Пяти пациентам с мутацией V600E в качестве терапии 2-й линии была назначена таргетная терапия (монотерапия ингибитором BRAF – 3 больным, комбинированная терапия ингибиторами BRAF и MEK – 2) с хорошим ответом на терапию (полный ответ – 2 человека, частичный ответ – 3). Наличие мутации V600E в гене <italic>BRAF</italic><italic> </italic>определяет плохой прогноз у пациентов с ГНСЗ. Предварительные результаты указывают на эффективность таргетной терапии в этой группе пациентов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>low-grade gliomas</kwd><kwd>children</kwd><kwd>targeted therapy</kwd><kwd>BRAF gene</kwd><kwd>V600E mutation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>глиомы низкой степени злокачественности</kwd><kwd>дети</kwd><kwd>таргетная терапия</kwd><kwd>ген BRAF</kwd><kwd>мутация V600E</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено при спонсорской поддержке фонда «Наука – детям».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1. Ostrom Q.T., Gittleman H., Fulop J., Liu M., Blanda R., Kromer C., et al. CBTRUS statistical report: Primary brain and central nervous system tumors diagnosed in the United States in 2008-2012. Neuro Oncol 2015; Suppl 4: iv1–62. 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