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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">10.25557/2073-7998.2025.07.61-63</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-3079</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>Метод ОРКП в клинической практике</article-title><trans-title-group xml:lang="en"><trans-title>The ICM method in clinical practice</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>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><bio xml:lang="ru"><p>115522, г. Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115522</p></bio><email xlink:type="simple">melcat@mail.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>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><bio xml:lang="ru"><p>115522, г. Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>1, Moskvorechie st., Moscow, 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ Медико-генетический научный центр имени академика Н.П. Бочкова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>09</month><year>2025</year></pub-date><volume>24</volume><issue>7</issue><fpage>61</fpage><lpage>63</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мельяновская Ю.Л., Кондратьева Е.И., 2025</copyright-statement><copyright-year>2025</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://www.medgen-journal.ru/jour/article/view/3079">https://www.medgen-journal.ru/jour/article/view/3079</self-uri><abstract><sec><title>Введение</title><p>Введение. Не всегда пациенты с муковисцидозом (МВ) имеют клинические проявления, характерные для заболевания, что определяется генотипом пациента. Особую роль в диагностике занимает метод определения разности кишечных потенциалов (ОРКП) при пограничных значениях потовой пробы и редких генетических вариантах.</p></sec><sec><title>Цель</title><p>Цель: оценить использование метода ОРКП для клинической практики.</p></sec><sec><title>Методы</title><p>Методы. ОРКП проводилось согласно европейским СОП V2.7_26.10.11. Обследовано 154 человека: 18 здоровых (контрольная группа), 36 пациентов с подозрением на МВ, 100 пациентов с МВ (генетические варианты различных классов – I, II, IV, V), из них 21  пациент с редкими генетическими вариантами, не описанными ранее, у 34 пациентов оценена эффективность таргетной терапии.</p></sec><sec><title>Результаты</title><p>Результаты. Обследовано 36 пациентов с подозрением на МВ (носители 1 варианта CFTR, атипичная клиническая картина), из них у 23 пациентов диагноз снят, у 10 подтвердился. Впервые выявлены и описаны генетические варианты: 1898+2T&gt;C, G1047S, 3321delG, 712-1G&gt;T, Q1352P, c.1584+18672A&gt;G, E873X, D443fs, W277X, W361X, D579Y, N505H, E403D, S1455X. Изучена функция ионных каналов при характерных для РФ вариантах: E92K, W1282R, N1303K, R334W, 3272-16T&gt;A, у носителей комплексных аллелей F508del;L467F, S466X;R1070Q и E217G;G509D.</p></sec><sec><title>Выводы</title><p>Выводы. Метод ОРКП помогает установить или исключить диагноз МВ, особенно при впервые выявленных генетических вариантах гена CFTR, оценить эффективность терапии CFTR модуляторами.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Not always patients with cystic fibrosis (CF) have clinical manifestations characteristic of the disease, which is determined by the patient’s genotype. The «ICM» method plays a special role in diagnostics with borderline sweat test values and rare genetic variants.</p></sec><sec><title>Objective</title><p>Objective: to evaluate the use of the intestinal current measurement (ICM) method for clinical practice.</p></sec><sec><title>Methods</title><p>Methods. ICM was carried out according to the European SOP V2.7_26.10.11. 154 people were examined: 18 healthy people (control group), 36 patients with suspected cystic fibrosis, 100 patients with cystic fibrosis (genetic variants of various classes – I, II, IV, V) of which 21 patients with rare genetic variants not described earlier, the effectiveness of targeted therapy was assessed in 34 patients.</p></sec><sec><title>Results</title><p>Results. 36 patients with suspected CF (carriers of 1 CFTR variant, atypical clinical picture) were examined. The diagnosis was removed in 23 patients, and confirmed in 10. The following genetic variants were identified and described for the first time: 1898+2T&gt;C, G1047S, 3321delG, 712-1G&gt;T, Q1352P, c.1584+18672A&gt;G, E873X, D443fs, W277X, W361X, D579Y, N505H, E403D, S1455X. The function of ion channels was studied in the variants typical for the Russian Federation: E92K, W1282R, N1303K, R334W, 3272-16T&gt;A, in carriers of complex alleles F508del;L467F, S466X;R1070Q and E217G;G509D. The effectiveness of targeted therapy was assessed in 34 patients.</p></sec><sec><title>Conclusions</title><p>Conclusions. The ICM method helps clinical physicians establish or exclude the diagnosis of cystic fibrosis, especially in the case of newly identified genetic variants of the CFTR gene, and assess the effectiveness of therapy with CFTR modulators.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>муковисцидоз</kwd><kwd>метод определения разницы кишечных потенциалов</kwd><kwd>диагностика</kwd><kwd>ген CFTR</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cystic fibrosis</kwd><kwd>intestinal potential difference method</kwd><kwd>diagnostics</kwd><kwd>CFTR gene</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Минобрнауки России для ФГБНУ МГНЦ.</funding-statement><funding-statement xml:lang="en">The research was carried out within the state assignment by the Ministry of Science and Higher Education of the Russian Federation for Research Centre for Medical Genetics.</funding-statement></funding-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. 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