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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">nogr</journal-id><journal-title-group><journal-title xml:lang="ru">Экспериментальная и клиническая гастроэнтерология</journal-title><trans-title-group xml:lang="en"><trans-title>Experimental and Clinical Gastroenterology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-8658</issn><publisher><publisher-name>«Global Media Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/1682-8658-ecg-204-8-56-62</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-2129</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>КЛИНИЧЕСКАЯ ГАСТРОЭНТЕРОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL GASTROENTEROLOGY</subject></subj-group></article-categories><title-group><article-title>Молекулярно-генетические аспекты синдрома Жильбера, синдромов Криглера-Найяра I и II типов</article-title><trans-title-group xml:lang="en"><trans-title>Molecular genetic aspects of Gilbert's syndrome, Crigler-Najjar syndromes types I and II</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9460-6294</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">ivanova_a_a@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7165-4496</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Максимов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Maksimov</surname><given-names>V. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт терапии и профилактической медицины - филиал Федерального государственного бюджетного научного учреждения «Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наук»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institutе of Internal and Preventive Medicine - Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>18</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>8</issue><fpage>56</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иванова А.А., Максимов В.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Иванова А.А., Максимов В.Н.</copyright-holder><copyright-holder xml:lang="en">Ivanova A.A., Maksimov V.N.</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.nogr.org/jour/article/view/2129">https://www.nogr.org/jour/article/view/2129</self-uri><abstract><p>Варианты гена UGT1A1 связаны с нарушением метаболизма билирубина, что клинически выражается в виде синдрома Жильбера (СЖ), синдрома Криглера-Найяра I и II типов, а также повышенной токсичности при приеме ряда лекарственных препаратов (индинавира, иринотекана, атазанавира, сорафениба, тоцилизумаба, белиностата, парацетамола и др.). Общим проявлением этих состояний является неконьюгированная гипербилирубинемия. Наиболее частым вариантом в гене UGT1A1, ассоциированным с СЖ (самой распространенной патологией, обусловленной вариантами гена UGT1A1) является вариант UGT1A1*28 - увеличенное до 7 количество ТА повторов в промоторе гена UGT1A1. Однако, вариант UGT1A1*28 является не единственным вариантом гена, способным вызвать неконьюгированную гипербилирубинемию. Известно, что в азиатской популяции найдены варианты UGT1A*7, UGT1A*6, UGT1A*27, которые также с высокой частотой вызывают СЖ. Для лиц европеоидной расы единственным частым вариантом, вызывающим СЖ, остается вариант UGT1A1*28. При этом даже носительство варианта UGT1A1*28 в гомозиготном состоянии не всегда приводит к появлению клинических симптомов. В то время, как при гетерозиготной форме варианта UGT1A1*28 может наблюдаться высокая неконьюгированная гипербилирубинемия. Таким образом, вероятно, существуют другие молекулярно-генетические маркеры, которые могут объяснить неполную пенетрантность и вариабельную экспрессивность клинических проявлений вариантов гена UGT1A1.</p></abstract><trans-abstract xml:lang="en"><p>Variants of the UGT1A1 gene are associated with impaired bilirubin metabolism, which is clinically expressed in Gilbert's syndrome (GS), Crigler-Najjar syndrome types I and II, as well as increased toxicity intaking certain drugs (indinavir, irinotecan, atazanavir, sorafenib, tocilizumab, belinostat, and paracetamol). A common manifestation of these conditions is unconjugated hyperbilirubinemia. The most common variant in the UGT1A1 gene associated with GS (the most common pathology caused by UGT1A1 gene variants) is the UGT1A1*28 variant, which is an increased number of TA repeats in the promoter of the UGT1A1 gene up to 7. However, the UGT1A1*28 variant is not the only gene variant capable of causing unconjugated hyperbilirubinemia. It is known that the variants UGT1A*7, UGT1A*6, and UGT1A*27 were found in the Asian population, which also causes GS with a high frequency. For Caucasians, the UGT1A1*28 variant remains the only common variant that causes GS. At the same time, even the carriage of the UGT1A1*28 variant in the homozygous state does not always lead to the appearance of clinical symptoms. While in the heterozygous form of the UGT1A1*28 variant, high unconjugated hyperbilirubinemia can be observed. Thus, other molecular genetic markers probably explain the incomplete penetrance and variable expressivity of the clinical manifestations of the UGT1A1 gene variants</p></trans-abstract><kwd-group xml:lang="ru"><kwd>синдром Жильбера</kwd><kwd>синдром Криглера-Найяра I и II типа</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Gilbert's syndrome</kwd><kwd>Crigler-Najjar syndrome types I and II</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">Nadeali Z., Vallian S. UGT1A1 gene linkage analysis: application of polymorphic markers rs4148326/rs4124874 in the Iranian population. Iran J Basic Med Sci. 2017;20(8):880-885. doi: 10.22038/IJBMS.2017.9109.</mixed-citation><mixed-citation xml:lang="en">Nadeali Z., Vallian S. UGT1A1 gene linkage analysis: application of polymorphic markers rs4148326/rs4124874 in the Iranian population. 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