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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">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25557/2073-7998.2021.12.58-61</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-2005</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>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BRIEF REPORT</subject></subj-group></article-categories><title-group><article-title>Клиническая гетерогенность российских детей с нуклеотидными вариантами в гене CRB2</article-title><trans-title-group xml:lang="en"><trans-title>Clinical heterogenity of Russian children with a CRB2 gene defect</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>Милованова</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Milovanova</surname><given-names>A. M.</given-names></name></name-alternatives><email xlink:type="simple">milovanova.am@nczd.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>Вашурина</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vashurina</surname><given-names>T. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Ананьин</surname><given-names>П. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ananin</surname><given-names>P. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Пушков</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pushkov</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Цыгин</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsygin</surname><given-names>A. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Савостьянов</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Savostyanov</surname><given-names>K. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Асанов</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Asanov</surname><given-names>A. Yu.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАУ «Национальный медицинский исследовательский центр здоровья детей» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center of Children’s Health of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО «Первый Московский государственный медицинский университет имени И.М. Сеченова Министерства здравоохранения Российской Федерации (Сеченовский Университет)»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I. M. Sechenov First Moscow State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>08</day><month>02</month><year>2022</year></pub-date><volume>20</volume><issue>12</issue><fpage>58</fpage><lpage>61</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Милованова А.М., Вашурина Т.В., Ананьин П.В., Пушков А.А., Цыгин А.Н., Савостьянов К.В., Асанов А.Ю., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Милованова А.М., Вашурина Т.В., Ананьин П.В., Пушков А.А., Цыгин А.Н., Савостьянов К.В., Асанов А.Ю.</copyright-holder><copyright-holder xml:lang="en">Milovanova A.M., Vashurina T.V., Ananin P.V., Pushkov A.A., Tsygin A.N., Savostyanov K.V., Asanov A.Y.</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://www.medgen-journal.ru/jour/article/view/2005">https://www.medgen-journal.ru/jour/article/view/2005</self-uri><abstract><p>Нефротический синдром, вызванный нуклеотидными вариантами в гене CRB2, является редким и недостаточно хорошо изученным состоянием. На настоящий момент существует лишь несколько сообщений об этой патологии и нет ни одного описания мягкого течения заболевания. Целью настоящего сообщения является демонстрация фенотипических особенностей нефротического синдрома, вызванного мутациями в гене CRB2, и обоснование дальнейшего изучения его генетических причин. На базе нефрологического и молекулярно-генетического отделений ФГАУ «НМИЦ здоровья детей» проведено ретро- и проспективное исследование генетических причин первичного стероидрезистентного нефротического синдрома (СРНС), включившее 250 детей. Среди 250 детей лишь двое имели причинные нуклеотидные варианты в гене CRB2 (0,8% от всех детей с СРНС и 1,21% от детей с выявленными генетическими причинами СРНС). Дети имели разные течение болезни и выраженность экстраренальных проявлений. Выводы: нефротический синдром, вызванный мутациями в гене CRB2, является чрезвычайно редкой патологией. Нами описано два случая с абсолютно разным клиническим течением.</p></abstract><trans-abstract xml:lang="en"><p>Nephrotic syndrome (NS) with variants in the CRB2 gene is a rather rare condition, and there are only a few reports of its severe course and no one of mild one. The aim of the communication is to demonstrate the phenotypic features of nephrotic syndrome caused by mutations in the CRB2 gene. On the basis of the nephrological and molecular-genetic departments of the Federal State Autonomous Institution “National Medical Research Center of Children’s Health” we performed retro- and prospective study of the genetic causes of primary steroid-resistant nephrotic syndrome, included 250 children. Among 250 children, only two had causative nucleotide variants in the CRB2 gene (0.8% of all children with steroid-resistant and 1.21% of children with identified genetic causes of SRNS). Children had a different course of the disease and the severity of extrarenal manifestations</p></trans-abstract><kwd-group xml:lang="ru"><kwd>врожденные аномалии развития почек и мочевых путей</kwd><kwd>кисты почек</kwd><kwd>хроническая болезнь почек</kwd><kwd>нефротический синдром</kwd><kwd>стероидрезистентный нефротический синдром</kwd></kwd-group><kwd-group xml:lang="en"><kwd>congenital abnormalities of kidney and urinary tract</kwd><kwd>kidney cysts</kwd><kwd>chronic kidney disease</kwd><kwd>nephrotic syndrome</kwd><kwd>steroid-resistant nephrotic syndrome</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">Ebarasi L., Ashraf S., Bierzynska A., Gee H.Y., McCarthy H.J., Lovric S., et al. Defects of CRB2 Cause Steroid-Resistant Nephrotic Syndrome. 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