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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="research-article" 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">978</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2025-24-2-74-79</article-id><article-id pub-id-type="edn">JFEYYE</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Hereditary factor XIII deficiency in children: diagnostic and clinical features and clinical experience with replacement therapy</article-title><trans-title-group xml:lang="ru"><trans-title>Дефицит фактора свертывания XIII у детей: особенности диагностики, клинического течения и опыт проведения заместительной терапии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4555-9337</contrib-id><name-alternatives><name xml:lang="en"><surname>Florinskiy</surname><given-names>Dmitry B.</given-names></name><name xml:lang="ru"><surname>Флоринский</surname><given-names>Дмитрий Борисович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>mitia94@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2057-2036</contrib-id><name-alternatives><name xml:lang="en"><surname>Pshonkin</surname><given-names>Alexey V.</given-names></name><name xml:lang="ru"><surname>Пшонкин</surname><given-names>Алексей Вадимович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>Alexey.Pshonkin@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><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>Alexandr V.</given-names></name><name xml:lang="ru"><surname>Полетаев</surname><given-names>Александр Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><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>Elena A.</given-names></name><name xml:lang="ru"><surname>Серёгина</surname><given-names>Елена Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Biology)</p></bio><bio xml:lang="ru"><p>канд. биол. наук </p></bio><email>elsereg@inbox.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/0000-0003-4384-6754</contrib-id><name-alternatives><name xml:lang="en"><surname>Zharkov</surname><given-names>Pavel A.</given-names></name><name xml:lang="ru"><surname>Жарков</surname><given-names>Павел Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>pavel.zharkov@dgoi.ru</email><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</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="preprint" iso-8601-date="2025-09-08" publication-format="electronic"><day>08</day><month>09</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2025</year></pub-date><volume>24</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>74</fpage><lpage>79</lpage><history><date date-type="received" iso-8601-date="2025-04-19"><day>19</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-04-22"><day>22</day><month>04</month><year>2025</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/978">https://hemoncim.com/jour/article/view/978</self-uri><abstract xml:lang="en"><p>Factor XIII deficiency is an extremely rare bleeding disorder with a prevalence of 1 in 2–3 millions. This deficiency is characterized by severe bleeding manifestations: life-threatening bleeding, including recurrent bleeding into the central nervous system. Here, we report 16 cases of factor XIII deficiency in children who were under our observation at the beginning of 2025. The use of factor XIII concentrate is a global standard for the treatment of patients with factor XIII deficiency. Since 2023, children with confirmed hereditary factor XIII deficiency have been receiving this concentrate with the help of the Circle of Kindness Foundation. By the time of publication, 9 out of 12 children who had been prescribed treatment with factor XIII concentrate started to receive it. All the patients receiving this therapy do not have spontaneous bleeding. In this article, we describe clinical and phenotypical features as well as bleeding manifestations in the patients with factor XIII deficiency and present our experience with factor XIII concentrate therapy. Ethical approval was not required since the study involved the use of anonymized retrospective data obtained during routine clinical practice.</p></abstract><trans-abstract xml:lang="ru"><p>Дефицит фактора свертывания XIII (FXIII) является крайне редкой коагулопатией с распространенностью 1 случай на 2–3 млн. Данный дефицит характеризуется тяжелыми проявлениями кровоточивости в виде жизнеугрожающих кровотечений, в том числе повторных кровотечений в центральную нервную систему. В НМИЦ ДГОИ им. Дмитрия Рогачева на начало 2025 г. наблюдались 16 человек с дефицитом FXIII. Мировым стандартом терапии данной патологии является применение концентрата FXIII. С 2023 г. дети с подтвержденным наследственным дефицитом FXIII получают данный концентрат при помощи фонда «Круг добра». На момент публикации статьи 9 из 12 детей, которым была назначена терапия концентратом FXIII, начали его получать. У всех пациентов на фоне применения данной терапии наблюдается отсутствие спонтанной кровоточивости. В статье описаны особенности клинической картины, фенотипа и проявлений кровоточивости у пациентов с дефицитом FXIII, а также представлен опыт применения терапии концентратом FXIII. В данном исследовании использованы ретроспективные неперсонифицированные данные пациентов, полученные в ходе рутинной клинической практики, поэтому оно не требовало одобрения этическим комитетом.</p></trans-abstract><kwd-group xml:lang="en"><kwd>rare bleeding disorders</kwd><kwd>factor XIII deficiency</kwd><kwd>prophylactic treatment</kwd><kwd>factor XIII concentrate</kwd><kwd>children</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>редкие коагулопатии</kwd><kwd>дефицит фактора свертывания XIII</kwd><kwd>профилактика</kwd><kwd>концентрат фактора свертывания XIII</kwd><kwd>дети</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Komáromi I., Bagoly Z., Muszbek L. Factor XIII: novel structural and functional aspects. 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