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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">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">1105</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2026-21-2-64-70</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>NEW DIRECTIONS, DIAGNOSTIC OPPORTUNITIES, AND TREATMENT ADVANCES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>НОВЫЕ НАПРАВЛЕНИЯ, ВОЗМОЖНОСТИ ДИАГНОСТИКИ И УСПЕХИ ЛЕЧЕНИЯ</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">Efficacy of avatrombopag in patients with immune thrombocytopenia</article-title><trans-title-group xml:lang="ru"><trans-title>Эффективность аватромбопага у пациентов с иммунной тромбоцитопенией</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2847-4374</contrib-id><name-alternatives><name xml:lang="en"><surname>Zakharov</surname><given-names>Sergey G.</given-names></name><name xml:lang="ru"><surname>Захаров</surname><given-names>Сергей Геннадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7493-0030</contrib-id><name-alternatives><name xml:lang="en"><surname>Mitina</surname><given-names>T. A.</given-names></name><name xml:lang="ru"><surname>Митина</surname><given-names>Т. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-0134-1049</contrib-id><name-alternatives><name xml:lang="en"><surname>Zakharova</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Захарова</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Demakova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Демакова</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7271-1560</contrib-id><name-alternatives><name xml:lang="en"><surname>Chernykh</surname><given-names>Yu. B.</given-names></name><name xml:lang="ru"><surname>Черных</surname><given-names>Ю. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9028-7671</contrib-id><name-alternatives><name xml:lang="en"><surname>Belousov</surname><given-names>K. A.</given-names></name><name xml:lang="ru"><surname>Белоусов</surname><given-names>К. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4604-2842</contrib-id><name-alternatives><name xml:lang="en"><surname>Vysotskaya</surname><given-names>L. L.</given-names></name><name xml:lang="ru"><surname>Высоцкая</surname><given-names>Л. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1576-1449</contrib-id><name-alternatives><name xml:lang="en"><surname>Trifonova</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Трифонова</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>hematologymoniki@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">M.F. Vladimirskiy Moscow Regional Research Clinical Institute</institution></aff><aff><institution xml:lang="ru">ГБУЗ МО «Московский областной научно-исследовательский клинический институт им. М. Ф. Владимирского»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Belgorod National Research University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Белгородский государственный национальный исследовательский университет»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-06-29" publication-format="electronic"><day>29</day><month>06</month><year>2026</year></pub-date><volume>21</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>64</fpage><lpage>70</lpage><history><date date-type="received" iso-8601-date="2026-06-28"><day>28</day><month>06</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-06-28"><day>28</day><month>06</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, ABV-press</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, АБВ-­пресс</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">ABV-press</copyright-holder><copyright-holder xml:lang="ru">АБВ-­пресс</copyright-holder><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://oncohematology.abvpress.ru/ongm/article/view/1105">https://oncohematology.abvpress.ru/ongm/article/view/1105</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> Thrombopoietin receptor agonists are considered second-line therapy and are prescribed to patients with insufficient response or intolerance to first-line therapy. These drugs, which stimulate platelet production by activating the thrombopoietin receptor, are effective and safe for both short-term and long-term treatment of immune thrombocytopenia. They provide high response rates in 70–80 % of patients and sustained remission in 10–30 %. The response to long-term use of thrombopoietin receptor agonists lasts for 6–8 years or more and allows for the reduction or discontinuation of corticosteroid and immunosuppressant use, as well as a halving of the incidence of bleeding.</p> <p><bold>Aim.</bold> To evaluate the efficacy of the thrombopoietin receptor agonist avatrombopag in patients with immune thrombocytopenia.</p> <p><bold>Materials and methods.</bold> The study included 45 patients with immune thrombocytopenia who received avatrombopag orally once daily, starting with a dose of 20 mg and subsequently titrated to achieve and maintain a platelet count of at least 50 × 10<sup>9</sup> / L. Statistical data were processed using GraphPad Prism 9, and differences between pre- and post-therapy were assessed using the Wilcoxon signed-rank test (<italic>p </italic>&lt; 0.05).</p> <p><bold>Results.</bold> The results of the study demonstrate a statistically significant increase in platelet counts among patients with immune thrombocytopenia treated with avatrombopag.</p> <p><bold>Conclusion.</bold> The use of avatrombopag appears justified as a second-line treatment for immune thrombocytopenia.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Агонисты рецепторов тромбопоэтина считаются терапией 2-й линии и назначаются пациентам с недостаточным ответом или непереносимостью 1-й линии терапии. Препараты, стимулирующие выработку тромбоцитов за счет активации рецептора к тромбопоэтину, эффективны и безопасны как при кратковременной, так и при длительной терапии иммунной тромбоцитопении. Они обеспечивают высокую частоту ответа у 70–80 % пациентов и устойчивую ремиссию у 10–30 %. Ответ на длительное применение агонистов рецепторов тромбопоэтина сохраняется 6–8 лет и более и позволяет уменьшить или прекратить применение кортикостероидов и иммунодепрессантов, а также вдвое сократить число кровотечений.</p> <p><bold>Цель исследования</bold> – оценка эффективности терапии агонистом тромбопоэтиновых рецепторов аватромбопагом у пациентов с иммунной тромбоцитопенией.</p> <p><bold>Материалы и методы.</bold> В исследовании приняли участие 45 пациентов с иммунной тромбоцитопенией, которые получали аватромбопаг перорально 1 раз в сутки начиная с дозы 20 мг, с последующей коррекцией для достижения и поддержания уровня тромбоцитов ≥50 × 10<sup>9</sup>/ л. Статистическую обработку данных проводили с использованием программы GraphPad Prism 9, оценивали различия до и после терапии с помощью критерия Уилкоксона (<italic>p</italic> &lt; 0,05).</p> <p><bold>Результаты.</bold> Выявлено статистически значимое повышение уровня тромбоцитов среди пациентов с иммунной тромбоцитопенией, получавших аватромбопаг.</p> <p><bold>Заключение.</bold> Применение аватромбопага представляется обоснованным в качестве терапии 2-й линии при иммунной тромбоцитопении.</p></trans-abstract><kwd-group xml:lang="en"><kwd>primary immune thrombocytopenia</kwd><kwd>thrombopoietin receptor agonist</kwd><kwd>avatrombopag</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>первичная иммунная тромбоцитопения</kwd><kwd>агонист рецептора тромбопоэтина</kwd><kwd>аватромбопаг</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">Melikyan A.L., Pustovaya E.I., Tsvetaeva N.V. et al. 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