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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">388</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2020-19-3-90-94</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL OBSERVATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Diagnostic challenges in pyruvate kinase deficiency</article-title><trans-title-group xml:lang="ru"><trans-title>Сложности диагностики дефицита пируваткиназы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9081-5120</contrib-id><name-alternatives><name xml:lang="en"><surname>Khadzhieva</surname><given-names>F. R.</given-names></name><name xml:lang="ru"><surname>Хаджиева</surname><given-names>Ф. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Hematologist of the Outpatient Department №3 of the Consultative and Diagnostic Center,</p><p>119049, Moscow, 4th Dobryninskiy Per., 1/9</p></bio><bio xml:lang="ru"><p>рач-гематолог амбулаторного отделения №3 консультативнодиагностического центра,</p><p>119049, Москва, 4-й Добрынинский пер., 1/9 </p></bio><email>fatima09876@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4070-3064</contrib-id><name-alternatives><name xml:lang="en"><surname>Mushanova</surname><given-names>S. N.</given-names></name><name xml:lang="ru"><surname>Мушанова</surname><given-names>С. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>119049, Moscow, 4th Dobryninskiy Per., 1/9</p></bio><bio xml:lang="ru"><p>119049, Москва, 4-й Добрынинский пер., 1/9</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4986-5748</contrib-id><name-alternatives><name xml:lang="en"><surname>Kekeeva</surname><given-names>T. N.</given-names></name><name xml:lang="ru"><surname>Кекеева</surname><given-names>Т. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>119049, Moscow, 4th Dobryninskiy Per., 1/9</p></bio><bio xml:lang="ru"><p>119049, Москва, 4-й Добрынинский пер., 1/9</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2747-695X</contrib-id><name-alternatives><name xml:lang="en"><surname>Lavrentyeva</surname><given-names>I. N.</given-names></name><name xml:lang="ru"><surname>Лаврентьева</surname><given-names>И. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>119049, Moscow, 4th Dobryninskiy Per., 1/9</p></bio><bio xml:lang="ru"><p>119049, Москва, 4-й Добрынинский пер., 1/9</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7634-2053</contrib-id><name-alternatives><name xml:lang="en"><surname>Raykina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Райкина</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Morozov Children’s City Clinical Hospital, Department of Health in Moscow</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Морозовская детская городская клиническая больница Департамента здравоохранения г. Москвы»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Healthcare of 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="2020-09-08" publication-format="electronic"><day>08</day><month>09</month><year>2020</year></pub-date><volume>19</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>90</fpage><lpage>94</lpage><history><date date-type="received" iso-8601-date="2020-10-05"><day>05</day><month>10</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-10-05"><day>05</day><month>10</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2025</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/388">https://hemoncim.com/jour/article/view/388</self-uri><abstract xml:lang="en"><p>Red cell pyruvate kinase deficiency is a rare congenital, nonspherocytic hemolytic anemia caused by a glycolytic defect that is due to compound heterozygous or homozygous mutations in the PKLR gene on chromosome 1q21. The article presents analytical review of literature and the clinical case of pyruvate kinase deficiency. Patient's parents agreed to use personal dats and photos in research and publications.</p></abstract><trans-abstract xml:lang="ru"><p>Дефицит пируваткиназы является редкой врожденной несфероцитарной гемолитической анемией, вызванной дефектом гликолитического пути, вследствие компаунд-гетерозиготных или гомозиготных мутаций в гене PKLR, расположенном на хромосоме 1q21. В статье представлен анализ литературных данных и разбор клинического случая дефицита пируваткиназы. Родители пациента дали согласие на использование информации, в том числе фотографии ребенка, в научных исследованиях и публикациях.</p></trans-abstract><kwd-group xml:lang="en"><kwd>pyruvate kinase deficiency</kwd><kwd>hemolytic anemia</kwd><kwd>PKLR</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>дефицит пируваткиназы</kwd><kwd>гемолитическая анемия</kwd><kwd>PKLR</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. Zanella A., Fermo E., Bianchi P., Valentini G. Red cell pyruvate kinase deficiency: molecular and clinical aspects. Brit J Haemat 2005; 130 (1): 11–25. DOI: 10.1111/j.1365-2141.2005.05527.x</mixed-citation><mixed-citation xml:lang="ru">Zanella A., Fermo E., Bianchi P., Valentini G. Red cell pyruvate kinase deficiency: molecular and clinical aspects. Brit J Haemat 2005; 130 (1): 11–25. 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