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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">pediatricjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Архив педиатрии и детской хирургии</journal-title><trans-title-group xml:lang="en"><trans-title>Archives of Pediatrics and Pediatric Surgery</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-4664</issn><issn pub-type="epub">3033-6783</issn><publisher><publisher-name>НИКИ детства Минздрава Московской области</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/2949-4664-apps-2-4-11-15</article-id><article-id custom-type="elpub" pub-id-type="custom">pediatricjournal-116</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 СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Использование метода ОРКП в клинической практике у пациента с вариантом с. 2900T&gt;C в трансположении с c.1521_1523delCTT гена CFTR</article-title><trans-title-group xml:lang="en"><trans-title>Use of the ICM method in clinical practice in a patient with the c.2900T&gt;C variant in trans with c.1521_1523delCTT of the CFTR gene</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8814-5532</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мельяновская</surname><given-names>Ю. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Melyanovskaya</surname><given-names>Yu. L.</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6395-0407</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кондратьева</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kondratyeva</surname><given-names>E. I.</given-names></name></name-alternatives><email xlink:type="simple">elenafpk@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственное бюджетное учреждение здравоохранения Московской области «Научно-исследовательский клинический институт детства Министерства здравоохранения Московской области»; Федеральное государственное бюджетное научное учреждение «Медико-генетический научный центр имени академика Н.П. Бочкова»</institution></aff><aff xml:lang="en"><institution>Research Clinical Institute of Childhood of the Ministry of Health of the Moscow Region; Research Center for Medical Genetics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>18</day><month>12</month><year>2024</year></pub-date><volume>2</volume><issue>4</issue><fpage>11</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мельяновская Ю.Л., Кондратьева Е.И., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Мельяновская Ю.Л., Кондратьева Е.И.</copyright-holder><copyright-holder xml:lang="en">Melyanovskaya Y.L., Kondratyeva E.I.</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.nikid.ru/jour/article/view/116">https://journal.nikid.ru/jour/article/view/116</self-uri><abstract><p>Муковисцидоз (МВ) заболевание, обусловленное патогенными вариантами в гене CFTR. Наибольшую трудность в настоящий момент представляет оценка вклада в развитие заболевания редких и ранее не идентифицированных генетических вариантов (мутаций), с неопределенным клиническим значением, а также определение связи генотип-фенотип. Необходимы дополнительные методы диагностики в связи с большим числом пациентов с пограничными значениями потовой пробы. Цель исследования: изучить патогенность варианта c.2900T&gt;C гена CFTR у пациента с вариантами c.1521_1523delCTT и с. 2900T&gt;C в гетерозиготном состоянии на основе оценки функциональной активности эпителиальных ионных каналов (ENaC, CFTR, CaCCs). Материалы и методы: клиническая информация о пациенте из истории болезни, метод определения разницы кишечных потенциалов (ОРКП). Результаты: у пациента отмечены пограничные результаты потовой пробы, нормальные показатели панкреатической эластазы кала, спирометрия в пределах возрастной нормы, что соответствует мягкому течению заболевания. Методом ОРКП была показана нормальная функции хлорного канала. Впервые в России описаны клинические особенности пациента с генетическим вариантом с. 2900T&gt;C в транс -положении с вариантом c.1521_1523delCTT. Заключение: результаты проведенного обследования, клиническое течение заболевания соответствуют мягкому течению заболевания или отсутствию его. Дополнительное применение метода ОРКП подтвердило нормальную функцию CFTR канала у пациента-носителя варианта с. 2900T&gt;C гена CFTR в тран-положении с вариантом c.1521_1523delCTT.</p></abstract><trans-abstract xml:lang="en"><p>Cystic fibrosis (CF) is a disease caused by pathogenic variants in the CFTR gene. The greatest difficulty at the moment is assessing the contribution to the development of the disease of rare and previously unidentified genetic variants (mutations), mutations of uncertain clinical significance, as well as determining the genotype-phenotype relationship. Additional diagnostic methods are needed due to the large number of patients with borderline sweat test values. Purpose of the study: to study the pathogenicity of the c.2900T&gt;C variant of the CFTR gene in a patient with the c.1521_1523delCTT and c.2900T&gt;C variants in a heterozygous state based on an assessment of the functional activity of epithelial ion channels (ENaC, CFTR, CaCCs). Materials and methods: clinical information about the patient from the medical history, intestinal current measurement (ICM) method. Results: the patient had borderline sweat test results, normal pancreatic fecal elastase levels, spirometry within the age norm, which corresponds to a mild course of the disease. The ICM method showed normal chloride channel function. For the first time in Russia, clinical features of a patient with the genetic variant c.2900T&gt;C in trans -position with the variant c.1521_1523delCTT are described. Conclusion: the results of the examination, the clinical course of the disease correspond to a mild course of the disease or its absence. Additional use of the ICM method confirmed the normal function of the CFTR channel in a patient carrying the c.2900T&gt;C variant of the CFTR gene in trans-position with the c.1521_1523delCTT variant.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>муковисцидоз</kwd><kwd>метод определения разницы кишечных потенциалов</kwd><kwd>вариант CFTR</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cystic fibrosis</kwd><kwd>method for intestinal current measurement</kwd><kwd>CFTR variant</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">De Boeck K. Cystic fibrosis in the year 2020: A disease with a new face. Acta Paediatr. 2020 May;109(5):893-899. doi: 10.1111/apa.15155.</mixed-citation><mixed-citation xml:lang="en">De Boeck K. 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