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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">167</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2015-10-4-44-55</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>BASIC RESEARCH</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ФУНДАМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ В ПРАКТИЧЕСКОЙ МЕДИЦИНЕ НА СОВРЕМЕННОМ ЭТАПЕ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Flow cytometric minimal residual disease monitoring in children with acute lymphoblastic leukemia treated by regimens with reduced intensity</article-title><trans-title-group xml:lang="ru"><trans-title>Применение проточной цитометрии для определения минимальной остаточной болезни у детей с острым лимфобластным лейкозом, получающих терапию по протоколам со сниженной интенсивностью</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><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><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow, 117997</p></bio><bio xml:lang="ru"><p>117997, Москва, ул. Саморы Машела, 1</p></bio><email>uralcytometry@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Verzhbitskaya</surname><given-names>Y. Yu.</given-names></name><name xml:lang="ru"><surname>Вержбицкая</surname><given-names>Т. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149;</p><p>22a Karla Marksa St., Ekaterinburg, 620026</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tsaur</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Цаур</surname><given-names>Г. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149;</p><p>22a Karla Marksa St., Ekaterinburg, 620026;</p><p>3 Repina St., Ekaterinburg, 620028</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32;</p><p>620026, Екатеринбург, ул. Карла Маркса, 22а;</p><p>620028, Екатеринбург, ул. Репина, 3</p></bio><xref ref-type="aff" rid="aff4"/><xref ref-type="aff" rid="aff5"/><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Solodovnikov</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Солодовников</surname><given-names>А. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>22a Karla Marksa St., Ekaterinburg, 620026</p></bio><bio xml:lang="ru"><p>620026, Екатеринбург, ул. Карла Маркса, 22а</p></bio><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Arakaev</surname><given-names>O. R.</given-names></name><name xml:lang="ru"><surname>Аракаев</surname><given-names>О. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Streneva</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Стренева</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149;</p><p>22a Karla Marksa St., Ekaterinburg, 620026</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32;</p><p>620026, Екатеринбург, ул. Карла Маркса, 22а</p></bio><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khlebnikova</surname><given-names>O. P</given-names></name><name xml:lang="ru"><surname>Хлебникова</surname><given-names>О. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shorikov</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Шориков</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149;</p><p>22a Karla Marksa St., Ekaterinburg, 620026</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32;</p><p>620026, Екатеринбург, ул. Карла Маркса, 22а</p></bio><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Saveliev</surname><given-names>L. I.</given-names></name><name xml:lang="ru"><surname>Савельев</surname><given-names>Л. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149;</p><p>3 Repina St., Ekaterinburg, 620028</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32;</p><p>620028, Екатеринбург, ул. Репина, 3</p></bio><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lagoyko</surname><given-names>S. N.</given-names></name><name xml:lang="ru"><surname>Лагойко</surname><given-names>С. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow, 117997</p></bio><bio xml:lang="ru"><p>117997, Москва, ул. Саморы Машела, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rumyantseva</surname><given-names>Yu. V.</given-names></name><name xml:lang="ru"><surname>Румянцева</surname><given-names>Ю. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow, 117997;</p><p>1 Ostrovityanova St., Moscow, 117997</p></bio><bio xml:lang="ru"><p>117997, Москва, ул. Саморы Машела, 1;</p><p>117997, Москва, ул. Островитянова, 1</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karachunskiy</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Карачунский</surname><given-names>А. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Samory Mashela St., Moscow, 117997;</p><p>1 Ostrovityanova St., Moscow, 117997</p></bio><bio xml:lang="ru"><p>117997, Москва, ул. Саморы Машела, 1;</p><p>117997, Москва, ул. Островитянова, 1</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fechina</surname><given-names>L. G.</given-names></name><name xml:lang="ru"><surname>Фечина</surname><given-names>Л. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>32 S. Deryabinoy St., Ekaterinburg, 620149;</p><p>22a Karla Marksa St., Ekaterinburg, 620026</p></bio><bio xml:lang="ru"><p>620149, Екатеринбург, ул. С. Дерябиной, 32;</p><p>620026, Екатеринбург, ул. Карла Маркса, 22а;</p></bio><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff7"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal Research Center of Pediatric Hematology, Oncology and Immunology named after Dmitriy Rogachev, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «ФНКЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Regional Children Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГБУЗ СО «Областная детская клиническая больница № 1»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Institute of Medical Cell Technologies</institution></aff><aff><institution xml:lang="ru">ГБУЗ СО «Областная детская клиническая больница № 1»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Regional Children Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГАУЗ СО «Институт медицинских клеточных технологий»</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Institute of Medical Cell Technologies</institution></aff><aff><institution xml:lang="ru">Россия</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Ural State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ГБОУ ВПО «Уральский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff7"><aff><institution xml:lang="en">Institute of Medical Cell Technologies</institution></aff><aff><institution xml:lang="ru">ГАУЗ СО «Институт медицинских клеточных технологий»</institution></aff></aff-alternatives><aff-alternatives id="aff8"><aff><institution xml:lang="en">N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ГБОУ ВПО «Российский национальный исследовательский медицинский университет им. Н.И. Пирогова» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-12-23" publication-format="electronic"><day>23</day><month>12</month><year>2015</year></pub-date><volume>10</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>44</fpage><lpage>55</lpage><history><date date-type="received" iso-8601-date="2015-12-23"><day>23</day><month>12</month><year>2015</year></date><date date-type="accepted" iso-8601-date="2015-12-23"><day>23</day><month>12</month><year>2015</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/167">https://oncohematology.abvpress.ru/ongm/article/view/167</self-uri><abstract xml:lang="en"><p>191 consecutive unselected children with acute lymphoblastic leukemia aged from 1 to 16 years were enrolled in the study. Bone marrow samples were obtained at the time of initial diagnostics as well as at days 15 (n = 188), 36 (n = 191), and 85 (n = 187) of remission induction. Minimal residual disease (MRD) was assessed by 6–10-color flow cytometry. Flow cytometry data at day 15 allowed distinguishing three patients groups with significantly different outcome (p ˂ 0.0001): 35.64 % patients with MRD &lt; 0.1 % represented 5-year event-free survival (EFS) of 100 %; 48.40 % cases with 0.1 % ≤ MRD&lt; 10 % had EFS 84.6 ± 4.2 %; 15.96 % patients with very high MRD (≥ 10 %) belonged to group with poor outcome (EFS 56.7 ± 9.0 %). At the end of remission induction (day 36) 36 children (18.85 %) with MRD higher than 0.1 % had significantly worse outcome compared to remaining ones (EFS 49.4 ± 9.0 and 93.5 ± 2.1 % respectively; p ˂ 0.0001). From a clinical standpoint it is relevant to evaluate both low-risk and high-risk criteria. Multivariate analysis showed that day 15 MRD data is better for low-risk patients definition while end-induction MRD is the strongest unfavorable prognostic factor.</p></abstract><trans-abstract xml:lang="ru"><p>Исследовали образцы костного мозга 191 пациента в возрасте от 1 года до 16 лет с острым лимфобластным лейкозом, взятые на 15-й (n = 188), 36-й (n = 191) и 85-й (n = 187) дни терапии. Минимальную остаточную болезнь (МОБ) определяли методом 6–10-цветной проточной цитометрии. По данным определения МОБ на 15-й день оказалось возможным выделить 3 группы пациентов с существенными различиями в бессобытийной выживаемости (БСВ) (p ˂ 0,0001): 35,64 % – с МОБ &lt; 0,1 % (БСВ 100 %); 48,40 % – с 0,1 % ≤ МОБ &lt; 10 % (БСВ 84,6 ± 4,2 %) и 15,96 % – с МОБ ≥ 10 % (БСВ 56,7 ± 9,0 %). На момент окончания индукционной терапии пороговый уровень в 0,1 % позволил четко разделить пациентов на 2 группы с БСВ 93,5 ± 2,1 и 49,4 ± 9,0 % соответственно (p ˂ 0,0001). Многофакторный анализ показал, что уровень МОБ на 36-й день &gt; 0,1 % является более значимым фактором неблагоприятного прогноза, чем высокая величина МОБ (≥ 10 %) на 15-й день. Таким образом, определение МОБ во время индукционной терапии позволяет выделять группы пациентов с существенно различающимся прогнозом и может быть использовано в системе стратификации наряду с другими факторами риска.</p></trans-abstract><kwd-group xml:lang="en"><kwd>acute lymphoblastic leukemia</kwd><kwd>minimal residual disease</kwd><kwd>flow cytometry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>острый лимфобластный лейкоз, минимальная остаточная болезнь, проточная цитометрия</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. Stanula M., Schrappe M. Treatment of childhood acute lymphoblastic leukemia. 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