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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">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">565</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2021-20-4-89-99</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The novel coronavirus disease (COVID-19) in children with cancer, hematologic malignancies, and severe immunodeficiencies. Results of monocenter study</article-title><trans-title-group xml:lang="ru"><trans-title>Особенности течения новой коронавирусной инфекции COVID-19 у детей с онкологическими, онкогематологическими и тяжелыми иммунологическими заболеваниями. Опыт НМИЦ ДГОИ им. Дмитрия Рогачева</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1680-7269</contrib-id><name-alternatives><name xml:lang="en"><surname>Solopova</surname><given-names>G. G.</given-names></name><name xml:lang="ru"><surname>Солопова</surname><given-names>Г. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, head of infection prevention &amp; control department,</p><p>1 Samory Mashela St., Moscow 117997</p></bio><bio xml:lang="ru"><p>канд. мед. наук, заместитель главного врача по инфекционному контролю,</p><p>117997, Москва, ул. Саморы Машела, 1</p></bio><email>galina.solopova@fccho-moscow.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4960-3593</contrib-id><name-alternatives><name xml:lang="en"><surname>Tsyganova</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Цыганова</surname><given-names>Е. 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></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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9568-8180</contrib-id><name-alternatives><name xml:lang="en"><surname>Kondrashova</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Кондрашова</surname><given-names>А. 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></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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9698-3659</contrib-id><name-alternatives><name xml:lang="en"><surname>Gordeeva</surname><given-names>G. N.</given-names></name><name xml:lang="ru"><surname>Гордеева</surname><given-names>Г. 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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5269-5508</contrib-id><name-alternatives><name xml:lang="en"><surname>Rozanceva</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Розанцева</surname><given-names>Е. 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></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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9736-1712</contrib-id><name-alternatives><name xml:lang="en"><surname>Begunova</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Бегунова</surname><given-names>С. 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></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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7578-9657</contrib-id><name-alternatives><name xml:lang="en"><surname>Voronin</surname><given-names>K. A.</given-names></name><name xml:lang="ru"><surname>Воронин</surname><given-names>К. А.</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5606-4335</contrib-id><name-alternatives><name xml:lang="en"><surname>Koposova</surname><given-names>A. O.</given-names></name><name xml:lang="ru"><surname>Копосова</surname><given-names>А. О.</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2322-5734</contrib-id><name-alternatives><name xml:lang="en"><surname>Novichkova</surname><given-names>G. A.</given-names></name><name xml:lang="ru"><surname>Новичкова</surname><given-names>Г. А.</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-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-12-22" publication-format="electronic"><day>22</day><month>12</month><year>2021</year></pub-date><volume>20</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>89</fpage><lpage>99</lpage><history><date date-type="received" iso-8601-date="2021-12-21"><day>21</day><month>12</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-12-21"><day>21</day><month>12</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><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://hemoncim.com/jour/article/view/565">https://hemoncim.com/jour/article/view/565</self-uri><abstract xml:lang="en"><p>Data on clinical manifestations of COVID-19 in immunocompromised patients in Russia is lacking, which prompted us to conduct a study to investigate clinical manifestations, risk factors, and outcomes of SARS-CoV-2 infection in children with oncological and hematological diseases treated at the D. Rogachev NMRCPHOI (Center). In this retrospective-prospective, nonrandomized, non-interventional study we enrolled children under 18 years with cancer, hematologic malignancies, and primary immunodeficiencies (PIDs) who underwent treatment at the Center from April 2020 to October 2021. COVID-19 cases were confirmed by polymerase chain reaction testing and classified as asymptomatic, mild, moderate, severe and critical. The study was approved by the Independent Ethics Committee and the Scientific Council of the Center. The study included 89 patients with a median age of 9.7 years and almost equal gender distribution (the male-to-female ratio was 1.1:1). Most patients (74%) were infected in a family claster. The main underlying diseases were: hemoblastoses (43.8%), solid tumors (33.7%), PIDs (14.6%). The most common clinical symptoms were fever (29%) and respiratory symptoms (47%). In 79% of cases, patients were asymptomatic or had mild symptoms; 21% of patients had moderate and severe disease (16% and 5%, accordingly). Risk factors associated with severe COVID-19 included lymphopenia (p &lt; 0.001) and hematopoietic stem cell transplantation (HSCT) (p = 0.002). Full recovery was documented in 84% of the patients, 16% died, however COVID-attributed mortality was 5.5%. The highest mortality was in patients with moderate/severe COVID-19 (47% vs 7%, p &lt; 0.001), in those with progression/ relapse of the underlying disease (36.3% vs 6%, p = 0.02), in children who had received specific therapy within a year before the SARS-CoV-2 diagnosis (21% vs 0%, p = 0.02), among HSCT recipients (31.6% vs 12.1%, p = 0.02), and patients with concomitant infections (33% vs 9.2%, p &lt; 0.01). Factors associated with poor prognosis were moderate or severe COVID-19, relapse/ progression of the underlying disease, specific treatment (HSCT in particular) within 1 year before the SARS-CoV-2 diagnosis, concomitant infections, and lymphopenia. Data obtained in this study can help physicians with management decisions at this population of patients. </p></abstract><trans-abstract xml:lang="ru"><p>Учитывая недостаточное количество данных по течению COVID-19 у иммунокомпрометированных детей на территории Российской Федерации, в ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России (Центр) было проведено исследование, посвященное изучению особенностей клиники, факторов риска и исходов новой коронавирусной инфекции у детей с онкогематологическими заболеваниями. В ретроспективно-проспективное, нерандомизированное и неинтервенционное исследование были включены дети до 18 лет с онкологическими, онкогематологическими заболеваниями, а также с первичными иммунодефицитными синдромами (ПИДС), проходившие лечение в Центре с апреля 2020 г. по октябрь 2021 г. Данное исследование одобрено независимым этическим комитетом и утверждено решением ученого совета НМИЦ ДГОИ им. Дмитрия Рогачева. Инфекция COVID-19 была установлена методом полимеразной цепной реакции и классифицирована на бессимптомную, легкую, среднетяжелую, тяжелую и крайне тяжелую формы. В исследование включены 89 пациентов с медианой возраста 9,7 года и практически равным соотношением мальчиков и девочек (1,1:1). Преимущественно инфицирование пациентов происходило в семейном кластере (74%). Основными заболеваниями были гемобластозы (43,8%), солидные опухоли (33,7%), ПИДС (14,6%). Наиболее частыми клиническими проявлениями были лихорадка (29%) и респираторная симптоматика (47%). В 79% случаев новая коронавирусная инфекция протекала бессимптомно или в легкой форме, тогда как в 21% в среднетяжелой (16%) и тяжелой (5%) формах. Факторами, коррелирующими с развитием тяжелых форм заболевания, были лимфопения (р &lt; 0,001) и проведение трансплантации гемопоэтических стволовых клеток (ТГСК) (р = 0,002). Излечение от новой коронавирусной инфекции отмечалось у 84% пациентов, 16% больных умерли, однако к смерти непосредственно от COVID-19 было отнесено 5,5% случаев. Высокий уровень смертности отмечался у пациентов со среднетяжелым/тяжелым течением COVID-19 (47% против 7%, р &lt; 0,001), прогрессией/рецидивом основного заболевания (36,3% против 6%, р = 0,02), у получавших специфическую терапию в течение года до инфицирования SARS-CoV-2 (21% против 0%, р = 0,02), у реципиентов ТГСК (31,6% против 12,1%, р = 0,02), при сочетанном инфекционном процессе (33% против 9,2%, р &lt; 0,01). Преимущественно COVID-19 у иммунокомпрометированных детей протекает в бессимптомной или легкой формах. Факторами, ассоциированными с тяжелым течением и неблагоприятным прогнозом, явились среднетяжелое и тяжелое течение COVID-19, рецидив/прогрессия основного заболевания, проведение специфической терапии, в первую очередь ТГСК, в течение года до инфицирования SARS-CoV-2, сочетанный инфекционный процесс и лимфопения. Полученные в исследовании данные могут быть полезны при принятии решения о тактике ведения пациентов. </p></trans-abstract><kwd-group xml:lang="en"><kwd>the novel coronavirus infection</kwd><kwd>SARS-CoV-2</kwd><kwd>COVID-19</kwd><kwd>children</kwd><kwd>oncology</kwd><kwd>hematologic malignancy</kwd><kwd>chemotherapy</kwd><kwd>immunosuppressive therapy</kwd><kwd>hematopoietic stem cell transplantation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>новая коронавирусная инфекция</kwd><kwd>SARS-CoV-2</kwd><kwd>COVID-19</kwd><kwd>дети</kwd><kwd>онкология</kwd><kwd>онкогематология</kwd><kwd>химиотерапия</kwd><kwd>иммуносупрессивная терапия</kwd><kwd>трансплантация гемопоэтических стволовых клеток</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено при поддержке Гранта Президента Российской Федерации. 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