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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">671</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2023-22-1-12-20</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>PROMISING STUDIES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ПЕРСПЕКТИВНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The use of droplet digital polymerase chain reaction for the molecular diagnosis and monitoring of treatment response in patients with Langerhans cell histiocytosis with the <italic>BRAF</italic> V600E mutation</article-title><trans-title-group xml:lang="ru"><trans-title>Использование цифровой капельной полимеразной цепной реакции для молекулярной диагностики и мониторинга ответа на терапию при гистиоцитозе из клеток Лангерганса с мутацией <italic>BRAF</italic> V600E</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9968-9332</contrib-id><name-alternatives><name xml:lang="en"><surname>Osipova</surname><given-names>D. S.</given-names></name><name xml:lang="ru"><surname>Осипова</surname><given-names>Д. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold> </bold><bold>Daria S. Osipova</bold>, a research technician at the Laboratory of Molecular Biology </p><p>1 Samory Mashela St., Moscow 117997, Russia </p></bio><bio xml:lang="ru"><p><bold>Осипова Дарья Сергеевна</bold>, лаборант-исследователь лаборатории молекулярной биологии</p><p>117997, Москва, ул. Саморы Машела, 1 </p></bio><email>darya.osipova@fccho-moscow.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7634-2053</contrib-id><name-alternatives><name xml:lang="en"><surname>Raykina</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><email>e_raikina@inbox.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0717-2019</contrib-id><name-alternatives><name xml:lang="en"><surname>Lyudovskikh</surname><given-names>E. I.</given-names></name><name xml:lang="ru"><surname>Людовских</surname><given-names>Э. 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><email>evcola@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8610-0624</contrib-id><name-alternatives><name xml:lang="en"><surname>Evseev</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Евсеев</surname><given-names>Д. А.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p>Москва</p></bio><email>dmitryevseev1991@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0813-5626</contrib-id><name-alternatives><name xml:lang="en"><surname>Kalinina</surname><given-names>I. I.</given-names></name><name xml:lang="ru"><surname>Калинина</surname><given-names>И. И.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p>Москва</p></bio><email>burbir@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7130-8596</contrib-id><name-alternatives><name xml:lang="en"><surname>Baydildina</surname><given-names>D. D.</given-names></name><name xml:lang="ru"><surname>Байдильдина</surname><given-names>Д. Д.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p>Москва</p></bio><email>Dina.Baydildina@fccho-moscow.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0889-6986</contrib-id><name-alternatives><name xml:lang="en"><surname>Popov</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Попов</surname><given-names>А. М.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p>Москва</p></bio><email>uralcytometry@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7082-1694</contrib-id><name-alternatives><name xml:lang="en"><surname>Semchenkova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Семченкова</surname><given-names>А. А.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p>Москва</p></bio><email>sasha.semchenkova@fccho-moscow.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3623-6547</contrib-id><name-alternatives><name xml:lang="en"><surname>Burtsev</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Бурцев</surname><given-names>Е. А.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p>Москва</p></bio><email>burcev.evgeniy@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0694-3996</contrib-id><name-alternatives><name xml:lang="en"><surname>Bronin</surname><given-names>G. O.</given-names></name><name xml:lang="ru"><surname>Бронин</surname><given-names>Г. О.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p> Москва </p></bio><email>gleb.bronin@ya.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0016-6698</contrib-id><name-alternatives><name xml:lang="en"><surname>Maschan</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Масчан</surname><given-names>А. А.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p> Москва </p></bio><email>Aleksey.Maschan@fccho-moscow.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1735-0093</contrib-id><name-alternatives><name xml:lang="en"><surname>Maschan</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Масчан</surname><given-names>М. А.</given-names></name></name-alternatives><bio xml:lang="en"><p> Moscow </p></bio><bio xml:lang="ru"><p> Москва </p></bio><email>mmaschan@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of 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">The Morozov Children's City Clinical Hospital of the Department of Health of Moscow</institution></aff><aff><institution xml:lang="ru">Государственное бюджетное учреждение здравоохранения города Москвы «Морозовская детская городская клиническая больница Департамента здравоохранения города Москвы</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-03-01" publication-format="electronic"><day>01</day><month>03</month><year>2023</year></pub-date><volume>22</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>12</fpage><lpage>20</lpage><history><date date-type="received" iso-8601-date="2022-10-22"><day>22</day><month>10</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2023-02-07"><day>07</day><month>02</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2023</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/671">https://hemoncim.com/jour/article/view/671</self-uri><abstract xml:lang="en"><p>This article discusses the potential of droplet digital polymerase chain reaction (PCR) for the diagnostic detection and monitoring of the allelic load of the <italic>BRAF </italic>V600E mutation in circulating cell-free DNA and myeloid progenitor cell population in the bone marrow of patients with Langerhans cell histiocytosis (LCH). Droplet digital PCR may serve as a useful tool for the monitoring of minimal residual disease and improve our understanding of the pathogenesis of Langerhans cells histiocytosis. The study was approved by the Independent Ethics Committee and the Scientific Council of the Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology.</p></abstract><trans-abstract xml:lang="ru"><p> В данной статье показаны возможности высокочувствительного метода цифровой капельной полимеразной цепной реакции в диагностике и мониторинге аллельной нагрузки мутации BRAF V600E в свободно циркулирующей ДНК, а также в популяции миелоидных предшественников костного мозга в группе пациентов с гистиоцитозом из клеток Лангерганса. Применение данной методики поможет определить подходы к оценке минимальной остаточной болезни, а также улучшить понимание распространенности процесса и патогенеза  гистиоцитоза из клеток Лангерганса. Исследование одобрено независимым этическим комитетом и утверждено решением ученого совета НМИЦ ДГОИ им. Дмитрия Рогачева. </p></trans-abstract><kwd-group xml:lang="en"><kwd>polymerase chain reaction</kwd><kwd>Langerhans cell histiocytosis</kwd><kwd>molecular diagnosis</kwd><kwd>BRAF V600E mutation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>полимеразная цепная реакция</kwd><kwd>гистиоцитоз из клеток Лангерганса</kwd><kwd>молекулярная диагностика</kwd><kwd>мутация BRAF V600E</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено при поддержке гранта Российского научного фонда, проект №22-15-00450.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Haupt R., Minkov M., Astigarraga I., Schäfer E., Nanduri V., Jubran R., et al. Langerhans cell histiocytosis (LCH): guidelines for diagnosis, clinical work-up, and treatment for patients till the age of 18 years. Pediatr Blood Cancer 2013; 60 (2): 175–84.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Harmon C.M., Brown N. Langerhans Cell Histiocytosis A Clinicopathologic Review and Molecular Pathogenetic Update. Arch Pathol Lab Med 2015; 139: 1211–4.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Badalian-Very G., Vergilio J.-A., Degar B.A., MacConaill L.E., Brandner B., Calicchio M.L., et al. Recurrent BRAF mutations in Langerhans cell histiocytosis. Blood 2010; 116 (11): 1919–23.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Wei R., Wang Z., Li X., Shu Y., Fu B. Frequent BRAFV600E mutation has no effect on tumor invasiveness in patients with Langerhans cell histiocytosis. Biomed Rep 2013; 1(3): 365–8.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Bigenwald C., Le Berichel J., Matthias Wilk C., Chakraborty R, Chen S.T., Tabachnikova A., et al. BRAFV600E-induced senescence drives Langerhans cell histiocytosis pathophysiology. Nat Med 2021; 27 (5): 851.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Berres M.-L., Phaik Har Lim K., Peters T., Price J., Takizawa H., Salmon H., et al. BRAF-V600E expression in precursor versus differentiated dendritic cells defines clinically distinct LCH risk groups. J Exp Med 2014; 211 (4) 669–83.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Xiao Y., van Halteren A.G.S., Lei X., Borst J., Steenwijk E., de Wit T., et al. Bone marrow-derived myeloid progenitors as driver mutation carriers in high- And low-risk Langerhans cell histiocytosis. Blood 2020; 136 (19): 2188–99.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>LCH-IV, International Collaborative Treatment Protocol for Children and Adolescents With Langerhans Cell Histiocytosis – Full Text View – ClinicalTrials.gov [Electronic resource]. URL: https://clinicaltrials.gov/ct2/show/NCT02205762 (accessed 26.10.2022).</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Проспективное нерандомизированное клиническое испытание фазы II вемурафениба в комбинации с цитарабином и 2-хлордезоксиаденозином у детей с гистоцитозом клеток Лангерганса с мутацией BRAF V600E [Электронный ресурс]. URL: https://ichgcp.net/ru/clinicaltrials-registry/NCT03585686 (дата обращения 26.10.2022).</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Evseev D., Kalinina I., Raykina E., Osipova D., Abashidze Z., Ignatova A., et al. Vemurafenib provides a rapid and robust clinical response in pediatric Langerhans cell histiocytosis with the BRAF V600E mutation but does not eliminate low-level minimal residual disease per ddPCR using cell-free circulating DNA. Int J Hematol 2021; 114 (6): 725–34.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Bio-Rad. Rare Mutation Detection Best Practices Guidelines.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Deprez L., Corbisier P., Kortekaas A.-M., Mazoua S., Beaz Hidalgo R., Trapmann S., et al. Validation of a digital PCR method for quantification of DNA copy number concentrations by using a certified reference material. Biomol Detect Quantif 2016; 9: 29–39.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Héritier S., Hélias-Rodzewicz Z., Lapillonne H., Terrones N., Garrigou S., Normand C., et al. Circulating cell-free BRAFV600E as a biomarker in children with Langerhans cell histiocytosis. Br J Haematol 2017; 178 (3): 457–67.</mixed-citation></ref></ref-list></back></article>
