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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">314</article-id><article-id pub-id-type="doi">10.17650/1818-8346-2019-13-4-8-16</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>HEMATOLOGIC MALIGNANCIES: DIAGNOSIS, TREATMENT, SUPPORTIVE CARE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ГЕМОБЛАСТОЗЫ: ДИАГНОСТИКА, ЛЕЧЕНИЕ, СОПРОВОДИТЕЛЬНАЯ ТЕРАПИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Clinical and biological features of acute myeloid leukemia with MLL gene rearrangements in children and results of therapy according to protocols AML-MM-2000/2006 in the Republic of Belarus</article-title><trans-title-group xml:lang="ru"><trans-title>Клинико-биологические особенности острого миелоидного лейкоза с реаранжировками MLL-гена у детей и результаты лечения по протоколам ОМЛ-ММ-2000/2006 в Республике Беларусь</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7151-6333</contrib-id><name-alternatives><name xml:lang="en"><surname>Barovskaya</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Баровская</surname><given-names>Ю. А.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>43 Frunzenskaya St.</italic><italic>, Borovlyani, Minsk region 223053</italic></p></bio><bio xml:lang="ru"><p>Юлия Александровна Баровская</p><p><italic>223053 Минский р-н, д. Боровляны, ул. Фрунзенская, 43</italic></p></bio><email>julia@tut.by</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8692-3767</contrib-id><name-alternatives><name xml:lang="en"><surname>Stegantseva</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Cтёганцева</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>43 Frunzenskaya St.</italic><italic>, Borovlyani, Minsk region 223053</italic></p></bio><bio xml:lang="ru"><p><italic>223053 Минский р-н, д. Боровляны, ул. Фрунзенская, 43</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Aleinikova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Алейникова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>43 Frunzenskaya St.</italic><italic>, Borovlyani, Minsk region 223053</italic></p></bio><bio xml:lang="ru"><p><italic>223053 Минский р-н, д. Боровляны, ул. Фрунзенская, 43</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Belarusian Research Center for Pediatric Oncology, Hematology and Immunology</institution></aff><aff><institution xml:lang="ru">ГУ «Республиканский научно-практический центр детской онкологии, гематологии и иммунологии»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-12-03" publication-format="electronic"><day>03</day><month>12</month><year>2018</year></pub-date><volume>13</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>8</fpage><lpage>16</lpage><history><date date-type="received" iso-8601-date="2019-01-02"><day>02</day><month>01</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-01-02"><day>02</day><month>01</month><year>2019</year></date></history><permissions><copyright-year>2018</copyright-year><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/314">https://oncohematology.abvpress.ru/ongm/article/view/314</self-uri><abstract xml:lang="en"><p><bold><italic>Objective of the study . </italic></bold><italic>Analysis of the treatment outcomes of patients with MLL rearrangements in the Republic of Belarus within protocols AML-MM-2000 and AML-MM-2006.<bold/></italic></p><p><bold><italic>Materials and methods . </italic></bold><italic>The study included 151 patients with newly diagnosed acute myeloid leukemia (AML) who were treated according to protocol AML-MM-2000 and AML-MM-2006. 11q23 abnormalities were detected in 40 (26.5 %) out of 151 patients.<bold/></italic></p><p><bold><italic>Results . </italic></bold><italic>The performed analysis of the survival outcomes of patients with 11q23 depending on the protocol showed that the probability of 5-year event-free survival (EFS) was significantly better (p = 0.0110) in children receiving treatment under protocol AML-MM-2006 (86 ± 13 %) compared with that of the patients included in protocol AML-MM-2000 (23 ± 12 %). Using protocol AML-MM-2006 allowed reducing the cumulative incidence of relapse (CIR) in this cohort from 46.2 ± 15.1 to 14.3 ± 14.3 % (p = 0.1609). EFS probability in recipients of allogeneic hematopoietic stem cell transplantation (alloHSCT) was 100 %, whereas in the group without alloHSCT – 31 ± 12 %, p = 0.0359. The treatment outcomes of patients with t(1;11) are comparable to those with CBF leukemia. The risk of relapse in patients with t(10;11) is higher than in the rest of the 11q23 cohort (62.5 ± 19.2 % versus 21.9 ± 7.5 %; p = 0.0136). CIR in patients with t(9;11) decreased from 42.8 % in protocol AML-MM-2000 to 15.4 % in protocol AML-MM-2006 (p = 0.1411).<bold/></italic></p><p><bold><italic>Conclusion . </italic></bold><italic>For the described cohort of patients alloHSCT is the best option for post-remission therapy. The worst prognosis is determined in patients with t(10;11), whereas the presence of t(1;11) is a favorable prognostic factor. Using the arm with cladribine showed to be effective in patients with t(9;11). To obtain reliable outcomes, we consider it reasonable to continue the study with the use of cladribine in patients with t(9;11).<bold/></italic></p></abstract><trans-abstract xml:lang="ru"><p><italic>Республике Беларусь в рамках протоколов ОМЛ-ММ-2000 и ОМЛ-ММ-2006.<bold/></italic></p><p><bold><italic>Материалы и методы . </italic></bold><italic>В исследование включены данные 151 пациента с впервые выявленным острым миелоидным лейкозом, которые получали лечение по протоколам ОМЛ-ММ-2000 и ОМЛ-ММ-2006. Аномалии 11q23 выявлены у 40 (26,5 %) пациентов. </italic></p><p><bold><italic>Результаты . </italic></bold><italic>Анализ результатов выживаемости пациентов с 11q23 в зависимости от протокола показал, что вероятность 5-летней бессобытийной выживаемости (EFS) достоверно выше (p = 0,0110) у детей, получавших лечение по протоколу ОМЛММ-2006 (86 ± 13 %), по сравнению с аналогичным показателем у лиц, включенных в протокол ОМЛ-ММ-2000 (23 ± 12 %). Применение протокола ОМЛ-ММ-2006 позволило снизить кумулятивную частоту рецидивов у данной когорты с 46,2 ± 15,1 до 14,3 ± 14,3 % (p = 0,1609). Вероятность EFS у реципиентов аллогенной трансплантации гемопоэтических стволовых клеток составила 100 %, тогда как в группе без ее проведения – 31 ± 12 % (p = 0,0359). Результаты лечения пациентов с t(1;11) сравнимы с таковыми при CBF-лейкозе. Риск развития рецидива у пациентов с t(10;11) выше, чем у остальной когорты 11q23 (62,5 ± 19,2 % против 21,9 ± 7,5 %; р = 0,0136). Показатели кумулятивной частоты развития рецидива у пациентов с t(9;11) cнизились с 42,8 % на протоколе ОМЛ-ММ-2000 до 15,4 % на протоколе ОМЛ-ММ-2006 (р = 0,1411).<bold/></italic></p><p><bold><italic>Заключение . </italic></bold><italic>Наилучшим методом постремиссионной терапии в отношении долгосрочных результатов лечения для описываемой когорты пациентов явилось проведение аллогенной трансплантации гемопоэтических стволовых клеток. Наиболее худший прогноз определяется у пациентов с t(10;11), тогда как наличие t(1;11) – благоприятный прогностический фактор. Применение ветви с кладрибином показало свою эффективность в отношении пациентов с t(9;11). Для получения достоверных результатов считаем целесообразным продолжить исследование с применением кладрибина для пациентов с t(9;11).</italic></p></trans-abstract><kwd-group xml:lang="en"><kwd>acute myeloid leukemia</kwd><kwd>children</kwd><kwd>MLL rearrangement</kwd><kwd>treatment outcome</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>острый миелоидный лейкоз</kwd><kwd>дети</kwd><kwd>МLL-реаранжировка</kwd><kwd>результат лечения</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Gibson B.E., Webb D.K., Howman A.J. et al. Results of a randomized trial in children with acute myeloid leukaemia: medical research council AML12 trial. Br J Haematol 2011;155(3):366–76. DOI: 10.1111/j.1365-2141.2011.08851.x. PMID: 21902686.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Rubnitz J.E., Inaba H., Dahl G. et al. 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