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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">425</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2020-19-4-102-106</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">Results of extended phenotyping of von Willebrand disease in the remote diagnostic program in children</article-title><trans-title-group xml:lang="ru"><trans-title>Результаты расширенного фенотипирования болезни Виллебранда в рамках программы дистанционной диагностики у детей</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5209-2099</contrib-id><name-alternatives><name xml:lang="en"><surname>Poletaev</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Полетаев</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Alexander V. Poletaev</bold>, head of the Laboratory of Clinical Hemostasis</p><p>1 Samory Mashela St., Moscow 117997 </p></bio><bio xml:lang="ru"><p><bold>Полетаев Александр Владимирович</bold>, заведующий лабораторией клинического гемостаза</p><p>117997, Москва, ул. Саморы Машела, 1 </p></bio><email>poletaev_alexandr@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7534-3863</contrib-id><name-alternatives><name xml:lang="en"><surname>Seregina</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Серегина</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="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2057-2036</contrib-id><name-alternatives><name xml:lang="en"><surname>Pshonkin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Пшонкин</surname><given-names>А. 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="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9865-527X</contrib-id><name-alternatives><name xml:lang="en"><surname>Karamyan</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Карамян</surname><given-names>Н. 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="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4567-1871</contrib-id><name-alternatives><name xml:lang="en"><surname>Fedorova</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Федорова</surname><given-names>Д. 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="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4384-6754</contrib-id><name-alternatives><name xml:lang="en"><surname>Zharkov</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Жарков</surname><given-names>П. 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="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">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">Center for Theoretical Problems of Physical and Chemical Pharmacology, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУН «Центр теоретических проблем физико-химической фармакологии» РАН</institution></aff></aff-alternatives><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>102</fpage><lpage>106</lpage><history><date date-type="received" iso-8601-date="2020-12-21"><day>21</day><month>12</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-12-21"><day>21</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/425">https://hemoncim.com/jour/article/view/425</self-uri><abstract xml:lang="en"><p>In the course of our earlier data obtained in remote diagnosis of von Willebrand disease (vWD) program, 16 samples were identified for extended laboratory work up in order to clarify a specific subtype of vWD. Purpose of the study: extended phenotyping of blood samples with suspected type 2 vWD. 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. Using 16 aliquoted frozen samples, collagen-binding (vWF:CB) and fVIII-binding activity of vWF (vWF:FVIIIB) tests were performed, as well as multimeric analysis of vWF. Isolated fVIII deficiency with no laboratory signs of 2N vWD subtype were detected in 7 (44%) of 16 patients with an initial decrease in the ratio of fVIII activity to vWF antigen. In the remaining 9 patients, vWF:CB was assessed, which showed a decrease in association with collagen in 6 patients, which allows one to suspect type 2A or 2B. In the remaining 3 with normal vWF:CB patients, type 2M was suspected. MA helped to further identify patients with suspected type 2B vWD. The use of remote diagnostics technologies allows phenotyping most forms of vWD even in patients living in regions with limited laboratory capabilities.</p></abstract><trans-abstract xml:lang="ru"><p>В ходе ранее проведенного нами анализа в рамках программы дистанционной диагностики болезни Виллебранда (БВ) было выявлено 16 образцов крови, требующих расширенной диагностики в целях уточнения конкретного подтипа заболевания. Цель исследования: провести расширенное фенотипирование образцов крови пациентов с подозрением на 2-й тип БВ. Данное исследование одобрено независимым этическим комитетом и утверждено решением ученого совета ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России. С использованием 16 аликвотированных замороженных образцов выполнены исследования коллаген-связывающей (vWF:СВ) и fVIIIсвязывающей активности фактора Виллебранда (vWF) (vWF:fVIIIВ), а также мультимерный анализ vWF (МА). У 7 (44%) из 16 пациентов с первоначальным снижением соотношения активности fVIII к антигену vWF не было выявлено лабораторных признаков подтипа 2N БВ и был диагностирован изолированный дефицит fVIII. У оставшихся 9 пациентов оценена vWF:СВ, которая показала снижение связи с коллагеном у 6 пациентов, что позволяет заподозрить тип 2А или 2В. У оставшихся 3 больных с нормальной vWF:СВ заподозрен тип 2М. МА дополнительно помог выделить пациентов с подозрением на тип 2В БВ. Применение технологий дистанционной диагностики позволяет проводить фенотипирование большинства форм БВ даже у пациентов, проживающих в отдаленных регионах с ограниченными лабораторными возможностями.</p></trans-abstract><kwd-group xml:lang="en"><kwd>von Willebrand disease</kwd><kwd>children</kwd><kwd>factor</kwd><kwd>diagnosis</kwd><kwd>hemorrhagic syndrome</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>болезнь Виллебранда</kwd><kwd>дети</kwd><kwd>фактор</kwd><kwd>диагностика</kwd><kwd>геморрагический синдром</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1. Reininger A.J., Heijnen H.F., Schumann H., Specht H.M., Schramm W., Ruggeri Z.M. Mechanism of platelet adhesion to von Willebrand factor and microparticle formation under high shear stress. Blood 2006; 107 (9): 3537–45. 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