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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">nodgo</journal-id><journal-title-group><journal-title xml:lang="ru">Российский журнал детской гематологии и онкологии (РЖДГиО)</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Pediatric Hematology and Oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2311-1267</issn><issn pub-type="epub">2413-5496</issn><publisher><publisher-name>LTD “Graphica”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17650/2311-1267-2017-4-4-49-55</article-id><article-id custom-type="elpub" pub-id-type="custom">nodgo-333</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group></article-categories><title-group><article-title>VEGF-блокада локализованных форм сарком Юинга при прогнозируемой на основании молекулярных маркеров ангиогенеза химиорезистентности новообразования</article-title><trans-title-group xml:lang="en"><trans-title>VEGF-blockade of localized Ewing’s sarcoma based on angiogenesis markers in pretreatment tumor tissue</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киселёв</surname><given-names>Л. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kisialeu</surname><given-names>L. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Республика Беларусь, 223053, Минская область, Минский район, Боровлянский с/с, д. Боровляны, ул. Фрунзенская, 43</p></bio><bio xml:lang="en"><p>43 Frunzenskaya St., Borovlyany village, Minsk district, Minsk region, 223053, Republic of Belarus</p></bio><email xlink:type="simple">leonslight@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савицкая</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Savitskaia</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Республика Беларусь, 223053, Минская область, Минский район, Боровлянский с/с, д. Боровляны, ул. Фрунзенская, 43</p></bio><bio xml:lang="en"><p>43 Frunzenskaya St., Borovlyany village, Minsk district, Minsk region, 223053, Republic of Belarus</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алейникова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleinikova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Республика Беларусь, 223053, Минская область, Минский район, Боровлянский с/с, д. Боровляны, ул. Фрунзенская, 43</p></bio><bio xml:lang="en"><p>43 Frunzenskaya St., Borovlyany village, Minsk district, Minsk region, 223053, Republic of Belarus</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГУ «Республиканский научно-практический центр детской онкологии, гематологии и иммунологии» Министерства здравоохранения Республики Беларусь</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Republican Center for Pediatric Oncology, Hematology and Immunology</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2017</year></pub-date><volume>4</volume><issue>4</issue><fpage>49</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Киселёв Л.П., Савицкая Т.В., Алейникова О.В., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Киселёв Л.П., Савицкая Т.В., Алейникова О.В.</copyright-holder><copyright-holder xml:lang="en">Kisialeu L.P., Savitskaia T.V., Aleinikova O.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.nodgo.org/jour/article/view/333">https://journal.nodgo.org/jour/article/view/333</self-uri><abstract><p>У трети пациентов с локализованными (неметастатическими) формами опухолей семейства саркомы Юинга (СЮ) имеет место резистентность к современным схемам системной терапии, что приводит к развитию рецидива заболевания. Прогнозирование таких случаев в целях своевременной интенсификации лечения возможно посредством изучения биологии опухолевого процесса и в частности ангиогенеза (АГ) – процесса формирования опухолью  собственной сосудистой сети. Ранее мы установили, что уровень маркеров АГ (экспрессии  мРНК гена TFPI2 (ингибитор путей тканевого фактора) и соотношения изоформ фактора  роста сосудистого эндотелия VEGFА165/VEGFА189) в ткани опухоли перед началом лечения  позволяет дифференцировать пациентов с локализованной СЮ на группы благоприятного и неблагоприятного исходов заболевания.</p><p>Целью настоящего исследования была интенсификация лечения посредством блокады АГ для пациентов с прогнозируемым на основании уровня маркеров АГ неблагоприятным  исходом. В исследование были включены 29 пациентов детского возраста с  локализованными формами СЮ. Для больных, которым в проспективном режиме был  спрогнозирован неблагоприятный исход заболевания на основании уровня маркеров АГ  (51,7 %), стандартный терапевтический план был интенсифицирован посредством  использования препарата бевацизумаб. Пятилетняя бессобытийная выживаемость (БСВ) для них составила 66,7 %. БСВ больных со спрогнозированным благоприятным исходом (48,3 %) была 100 %. БСВ объединенной когорты пациентов составила 82,8 %. Показано, что  антиангиогенная терапия может быть эффективна у пациентов с локализованными формами СЮ при прогнозируемом (на основании уровня маркеров АГ) неблагоприятном исходе заболевания.</p></abstract><trans-abstract xml:lang="en"><p>A third of patients with localized (non-metastatic) forms of tumors of the Ewing sarcoma family (ES) have resistance to modern systemic therapy regimens, which leads to a relapse of the disease. Forecasting such cases for the purpose of timely intensification of treatment is possible by studying the biology of the tumor process  and in particular angiogenesis (AG) – the process of formation of the tumor by the own vascular network. Earlier, we found that the level of AG markers (TFPI2 mRNA expression (tissue factor inhibitor) and the ratio of VEGFA165/VEGFA189 vascular endothelial growth factor  isoforms) in the tumor tissue prior to treatment can differentiate  patients. Previously we have established the ability to predict poor  outcome based on mRNA expression levels of both TFPI2 (tissue  factor pathway inhibitor 2) and VEGFA165/VEGFA189 (vascular endothelial growth factor isoforms) ratio in pretreatment tumor tissue, it makes it possible to differentiate patients from localized ES into groups of favorable and unfavorable outcome of the disease.</p><p>The aim of this study was to intensify treatment by blockade of AH for patients with an adverse outcome predicted by the level of AH markers. VEGF-blockade was used to enhance the therapeutic effects for patients with a predicted adverse outcome. 29 patients with  localized forms ES included in the study. For patients with adverse prognosis (51.7 %) standard chemotherapy has been strengthened through bevacizumab (VEGF inhibitor). 5-years Event-free survival  (EFS) for patients with adverse prognosis was 66.7 % for patients  with good prognosis – 100 %, for all patients EFS rate was 82.4 %.  EFS of the combined cohort of patients was 82.8 %. It was shown  that anti-angiogenic therapy can be effective in patients with  localized forms of ES with a predictable (based on the level of AH markers) adverse outcome of the disease.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ангиогенез</kwd><kwd>дети</kwd><kwd>саркома Юинга</kwd><kwd>диагностика и лечение</kwd><kwd>прогностические маркеры</kwd><kwd>фактор роста сосудистого эндотелия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>angiogenesis</kwd><kwd>children</kwd><kwd>Ewing’s sarcoma</kwd><kwd>diagnosis and management</kwd><kwd>prognostic markers</kwd><kwd>vascular endothelial growth factor</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Алейникова О.В., Потапнев М.П., Сыцкевич О.Н. и др. Достижения детской онкологии и гематологии в Республике Беларусь. Актуальные вопросы детской онкологии и гематологии: Материалы VIII международного симпозиума. 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