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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">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">923</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2024-19-2-56-66</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Immunophenotyping of blood and bone marrow cells as a way to search for differentiation syndrome risk factors in acute promyelocytic leukemia</article-title><trans-title-group xml:lang="ru"><trans-title>Иммунофенотипирование клеток крови и костного мозга как способ поиска факторов риска дифференцировочного синдрома при остром промиелоцитарном лейкозе</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0201-8680</contrib-id><name-alternatives><name xml:lang="en"><surname>Semenova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Семенова</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Arina A. Semenova.</p><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>Семенова Арина Аркадьевна.</p><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><email>arinasemenovaa69@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8490-6066</contrib-id><name-alternatives><name xml:lang="en"><surname>Galtseva</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Гальцева</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4827-8947</contrib-id><name-alternatives><name xml:lang="en"><surname>Troitskaya</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Троицкая</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6512-910X</contrib-id><name-alternatives><name xml:lang="en"><surname>Kapranov</surname><given-names>N. M.</given-names></name><name xml:lang="ru"><surname>Капранов</surname><given-names>Н. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5932-0285</contrib-id><name-alternatives><name xml:lang="en"><surname>Davydova</surname><given-names>Yu. O.</given-names></name><name xml:lang="ru"><surname>Давыдова</surname><given-names>Ю. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4119-7175</contrib-id><name-alternatives><name xml:lang="en"><surname>Nikiforova</surname><given-names>K. A.</given-names></name><name xml:lang="ru"><surname>Никифорова</surname><given-names>К. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-1097-2046</contrib-id><name-alternatives><name xml:lang="en"><surname>Loseva</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Лосева</surname><given-names>А. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ermolaev</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Ермолаев</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 8 Trubetskaya St., Moscow 119991</p></bio><bio xml:lang="ru"><p>119991 Москва, ул. Трубецкая, 8, стр. 2</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-0323-1493</contrib-id><name-alternatives><name xml:lang="en"><surname>Surimova</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Суримова</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6288-7570</contrib-id><name-alternatives><name xml:lang="en"><surname>Kulikov</surname><given-names>S. M.</given-names></name><name xml:lang="ru"><surname>Куликов</surname><given-names>С. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6177-3566</contrib-id><name-alternatives><name xml:lang="en"><surname>Parovichnikova</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Паровичникова</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>4 Novyy Zykovskiy Proezd, Moscow 125167</p></bio><bio xml:lang="ru"><p>125167 Москва, Новый Зыковский пр-д, 4</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Medical Research Center for Hematology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр гематологии» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University)</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России (Сеченовский Университет)</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-04-03" publication-format="electronic"><day>03</day><month>04</month><year>2024</year></pub-date><volume>19</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>56</fpage><lpage>66</lpage><history><date date-type="received" iso-8601-date="2024-01-21"><day>21</day><month>01</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-04-03"><day>03</day><month>04</month><year>2024</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://oncohematology.abvpress.ru/ongm/article/view/923">https://oncohematology.abvpress.ru/ongm/article/view/923</self-uri><abstract xml:lang="en"><p><bold>Background. </bold>Differentiation syndrome (DS) is a potentially fatal complication of therapy for acute promyelocytic leukemia (APL) with an incidence of up to 48 %. To date, no reliable DS risk factors have been found, with the exception of leukocytosis at the APL onset.</p><p><bold>Aim. </bold>To determine the risk factors associated with DS in patients with APL during induction therapy with arsenic trioxide (ATO) and tretinoin (ATRA).</p><p><bold>Materials and methods. </bold>The study included 39 patients with APL, 29 (74.4 %) of them were classified as low-risk according to ELN (European Leukemia Net), 10 (25.6 %) were classified as high-risk. At the disease onset, cytological and molecular (chimeric transcript <italic>PML::RAR</italic><italic>α</italic>, <italic>FLT3</italic>-ITD mutation) bone marrow studies were performed, the expression of 28 differentiation antigens by blood and bone marrow blast cells was determined (markers of early precursors, myeloid and lymphoid differentiation, cell adhesion molecules, chemokine receptors, integrins, selectin), body mass index (BMI) and the leukocytes number dynamics during induction course were assessed. All patients received ATRA and ATO therapy. Patients from the high-risk group at the onset received 1–3 injections of idarubicin (12 mg/m<sup>2</sup>) and dexamethasone (8–10 mg/m<sup>2</sup> 2 times a day) to prevent DS until leukocytosis reduced. In cases of DS, dexamethasone was prescribed at a dose of 10 mg/m<sup>2</sup> 2 times a day; in cases of severe DS, the induction course was interrupted.</p><p><bold>Results. </bold>Of the 39 patients, 12 (30.8 %) were diagnosed with DS: 20 % of high-risk patients (2/10) and 34.5 % of low-risk patients (10/29). There was no statistically significant association of leukocytosis more than 10 × 10<sup>9</sup> /L at onset, microgranular morphology of blast cells, <italic>bcr3</italic>-variant <italic>PML::RAR</italic><italic>α</italic>, <italic>FLT3</italic>-ITD mutation with DS. In multivariate analysis, the probability of DS was associated with BMI ≥30 kg/m<sup>2</sup> and mean fluorescence intensity of CD38 antigen by blast cells, regardless of risk group. based on the results of the ROC-analysis, the threshold value of mean CD38 fluorescence intensity was set at 25,000 cu, if exceeded, DS is highly likely to develop.</p><p><bold>Conclusion. </bold>the high incidence of DS among low-risk patients is probably due to the lack of prophylactic glucocorticosteroids administration for the development of leukocytosis during ATRA and ATO therapy. BMI ≥30 kg/m<sup>2</sup> and mean CD38 fluorescence intensity more than 25,000 cu were identified as statistically significant DS risk factors.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Дифференцировочный синдром (ДС) – потенциально летальное осложнение терапии острого промиелоцитарного лейкоза (ОПЛ) с частотой встречаемости до 48 %. На сегодняшний день не обнаружено достоверных факторов риска развития ДС за исключением лейкоцитоза в дебюте ОПЛ.</p><p><bold>Цель исследования </bold>– определить факторы риска, ассоциированные с развитием ДС, у пациентов с ОПЛ на фоне индукционной терапии триоксидом мышьяка (ATO) и третиноином (ATRA).</p><p><bold>Материалы и методы. </bold>В исследование включены 39 пациентов с ОПЛ, 29 (74,4 %) из них отнесены в группу низкого риска по ELN (European Leukemia Net), 10 (25,6 %) – в группу высокого риска. В дебюте заболевания выполняли цитологическое и молекулярное (химерный транскрипт <italic>PML::RARα</italic>, мутация <italic>FLT3</italic>-ITD) исследования костного мозга, определяли экспрессию бластными клетками крови и костного мозга 28 дифференцировочных антигенов (маркеры ранних предшественников, миелоидной и лимфоидной дифференцировки, молекулы клеточной адгезии, хемокиновые рецепторы, интегрины, селектин), оценивали индекс массы тела (ИМТ), динамику количества лейкоцитов в процессе курса индукции. Всем пациентам проводили терапию ATRA и ATO. пациентам группы высокого риска в дебюте выполняли 1–3 введения идарубицина (12 мг/м<sup>2</sup>) и дексаметазона (8–10 мг/м<sup>2</sup> 2 раза в день) для профилактики ДС до редукции лейкоцитоза. В случаях ДС назначали дексаметазон в дозе 10 мг/м<sup>2</sup> 2 раза в день, при тяжелом течении ДС курс индукции прерывали.</p><p><bold>Результаты. </bold>У 12 (30,8 %) из 39 пациентов диагностирован ДС: у 20 % (2/10) пациентов группы высокого риска и у 34,5 % (10/29) пациентов группы низкого риска. Не выявлена статистически значимая ассоциация лейкоцитоза ≥10 × 10<sup>9</sup>/л в дебюте, микрогранулярной морфологии бластных клеток, <italic>bcr3</italic>-варианта <italic>PML::RARα</italic>, мутации <italic>FLT3</italic>-ITD с развитием ДС. При многофакторном анализе вероятность развития ДС была ассоциирована с ИМТ ≥30 кг/м<sup>2</sup> и средней интенсивностью флуоресценции антигена CD38 бластными клетками независимо от группы риска. по результатам ROC-анализа установлено пороговое значение средней интенсивности флуоресценции CD38 25 000 у.е., в случае превышения которого с высокой вероятностью развивается ДС.</p><p><bold>Заключение. </bold>Высокая частота развития ДС среди пациентов группы низкого риска, вероятно, обусловлена отсутствием профилактического назначения глюкокортикостероидных гормонов при развитии лейкоцитоза на фоне терапии ATRA и ATO. Как статистически значимые факторы риска развития ДС были определены ИМТ ≥30 кг/м<sup>2</sup> и средняя интенсивность флуоресценции CD38 ˃25 000 у.е.</p></trans-abstract><kwd-group xml:lang="en"><kwd>acute promyelocytic leukemia</kwd><kwd>differentiation syndrome</kwd><kwd>arsenic trioxide</kwd><kwd>CD38</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>острый промиелоцитарный лейкоз</kwd><kwd>дифференцировочный синдром</kwd><kwd>триоксид мышьяка</kwd><kwd>CD38</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Zhao H., Zhao Y., Zhang Y. et al. Difference in causes and prognostic factors of early death between cohorts with de novo and relapsed acute promyelocytic leukemia. Ann Hematol 2018;97: 409–16. DOI: 10.1007/s00277-017-3216-2</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Daver N., Kantarjian H., Marcucci G. et al. 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