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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">pulmo</journal-id><journal-title-group><journal-title xml:lang="ru">Пульмонология</journal-title><trans-title-group xml:lang="en"><trans-title>PULMONOLOGIYA</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-0189</issn><issn pub-type="epub">2541-9617</issn><publisher><publisher-name>Scientific and Practical Journal “PULMONOLOGIYA” LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18093/0869-0189-2026-36-2-273-280</article-id><article-id custom-type="elpub" pub-id-type="custom">pulmo-4886</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>ЗАМЕТКИ ИЗ ПРАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PRACTICAL NOTES</subject></subj-group></article-categories><title-group><article-title>Опыт применения препарата элексакафтор / тезакафтор / ивакафтор + ивакафтор off-label у ребенка с муковисцидозом в возрасте 2 месяцев</article-title><trans-title-group xml:lang="en"><trans-title>Experience with off-label elexacaftor/tezacaftor/ivacaftor + ivacaftor therapy in a 2-month-old child with cystic fibrosis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1419-6756</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Семыкин</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Semykin</surname><given-names>S. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Семыкин Сергей Юрьевич — к. м. н., заведующий педиатрическим отде­лением </p><p>119571, Москва, Ленинский пр-т, 117, корп. 1</p></bio><bio xml:lang="en"><p>Sergey Yu. Semykin, Candidate of Medicine, Head of the Pediatric Depart­ment</p><p>Leninskiy prospect 117, build. 1, Moscow, 119571</p></bio><email xlink:type="simple">dr.semykin@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/0000-0002-9142-2318</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Косицкая</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kositskaia</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Косицкая Оксана Григорьевна — ассистент кафедры госпитальной педи­атрии имени академика В.А Таболина Института материнства и детства Федерального государственного бюджетного образовательного учрежде­ния высшего образования «Российский национальный исследователь­ский медицинский университет имени Н.И. Пирогова» Министерства здравоохранения Российской Федерации; председатель правления Рос­сийского общества респираторных заболеваний</p><p>117997, Москва, ул. Островитянова, 1</p><p>Author ID: 881007</p></bio><bio xml:lang="en"><p>Oksana G. Kositskaia, Assistant Professor, Academician V.A.Tabolin De­partment of Hospital Paediatrics, <ext-link xlink:href="https://www.multitran.com/m.exe?ll1=2&amp;ll2=1&amp;s=%d0%b8%d0%bd%d1%81%d1%82%d0%b8%d1%82%d1%83%d1%82+%d0%bc%d0%b0%d1%82%d0%b5%d1%80%d0%b8%d0%bd%d1%81%d1%82%d0%b2%d0%b0+%d0%b8+%d0%b4%d0%b5%d1%82%d1%81%d1%82%d0%b2%d0%b0&amp;l2=1" ext-link-type="uri">Institute of Motherhood and Childhood</ext-link>, Federal State Autonomous Educational Institution of Higher Education “N.I.Pirogov Russian National Research Medical University” of the Min­istry of Health of the Russian Federation; Chairman of the Executive Board of Russian Respiratory Society</p><p>ul. Ostrovityanova 1, Moscow, 117997</p><p>Author ID: 881007</p></bio><email xlink:type="simple">o.zonenko@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8520-2378</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петряйкина</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Petryaykina</surname><given-names>E. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петряйкина Елена Ефимовна — д. м. н., профессор, директор </p><p>119571, Москва, Ленинский пр-т, 117, корп. 1</p></bio><bio xml:lang="en"><p>Elena E. Petryaykina, Doctor of Medicine, Professor, Chief </p><p>Leninskiy prospect 117, build. 1, Moscow, 119571</p></bio><email xlink:type="simple">dr.semykin@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/0000-0002-2508-8219</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пыталь</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pytal</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пыталь Анна Владимировна — заведующая <ext-link xlink:href="https://rdkb.ru/about/otdeleniya/otdelenie-reanimatsii-i-intensivnoy-terapii.php" ext-link-type="uri">отделением реанимации</ext-link> <ext-link xlink:href="https://rdkb.ru/about/otdeleniya/otdelenie-reanimatsii-i-intensivnoy-terapii.php" ext-link-type="uri">и интенсивной терапии</ext-link></p><p>119571, Москва, Ленинский пр-т, 117, корп. 1</p></bio><bio xml:lang="en"><p>Anna V. Pytal, Head of the intensive care unit</p><p>Leninskiy prospect 117, build. 1, Moscow, 119571</p></bio><email xlink:type="simple">dr.semykin@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/0000-0003-4653-4799</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Прометной</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Prometnoy</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Прометной Дмитрий Владимирович — д. м. н., заместитель главного врача по анестезиологии и реаниматологии </p><p>119571, Москва, Ленинский пр-т, 117, корп. 1</p><p>SPIN-code: 1074­9498</p></bio><bio xml:lang="en"><p>Dmitry V. Prometneu, Doctor of Medicine, Deputy Chief Physician for Anes­thesiology and resuscitation </p><p>Leninskiy prospect 117, build. 1, Moscow, 119571</p><p>(SPIN-code: 1074­9498</p></bio><email xlink:type="simple">dr.semykin@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/0000-0001-9245-5659</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Путилина</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Putilina</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Путилина Екатерина Александровна — главный врач Российской детской клинической больницы </p><p>119571, Москва, Ленинский пр-т, 117, корп. 1</p><p> </p></bio><bio xml:lang="en"><p>Ekaterina A. Putilina, Chief Physician </p><p>Leninskiy prospect 117, build. 1, Moscow, 119571</p></bio><email xlink:type="simple">dr.semykin@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российская детская клиническая больница — филиал федерального государственного автономного образовательного учреждения высшего образования «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Children’s Clinical Hospital, the Branch of the Russian National Research Medical University named after N.I. Pirogov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Autonomous Educational Institution of Higher Education “N.I.Pirogov Russian National Research Medical University” of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>17</day><month>04</month><year>2026</year></pub-date><volume>36</volume><issue>2</issue><fpage>273</fpage><lpage>280</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Семыкин С.Ю., Косицкая О.Г., Петряйкина Е.Е., Пыталь А.В., Прометной Д.В., Путилина Е.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Семыкин С.Ю., Косицкая О.Г., Петряйкина Е.Е., Пыталь А.В., Прометной Д.В., Путилина Е.А.</copyright-holder><copyright-holder xml:lang="en">Semykin S.Y., Kositskaia O.G., Petryaykina E.E., Pytal A.V., Prometnoy D.V., Putilina E.A.</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.pulmonology.ru/pulm/article/view/4886">https://journal.pulmonology.ru/pulm/article/view/4886</self-uri><abstract><p>Муковисцидоз (МВ) — наследственное заболевание, вызванное мутациями в гене CFTR, приводящими к нарушению функции белка хлорного канала. Прорывом в лечении стали CFTR-модуляторы — препараты, при воздействии которых корректируется функция дефектного белка. В России зарегистрированы комбинации ивакафтор/лумакафтор и элексакафтор/тезакафтор/ивакафтор, но их применение официально разрешено только с 2 лет.</p><p>Целью работы явилась демонстрация первого в мире клинического наблюдения, в котором описывается успешное применение терапии препаратом элексакафтор/тезакафтор/ивакафтор у 2-месячной пациентки в критическом состоянии с прогрессирующей дыхательной недостаточностью. Препарат был назначен off-label по решению врачебной комиссии. На фоне лечения достигнут быстрый выраженный положительный эффект без серьезных побочных реакций, что позволило вывести ребенка из терминального состояния.</p><p>Заключение. Продемонстрирована возможность и эффективность экстренного примене­ния современных CFTR-модуляторов у младенцев с жизнеугрожающим течением МВ. Успешный опыт обосновывает необходимость пересмотра и возможного расширения возрастных показаний для таргетной терапии МВ в рамках клинических рекомендаций.</p></abstract><trans-abstract xml:lang="en"><p>Cystic fibrosis (CF) is a hereditary disease caused by mutations in the CFTR gene, which lead to dysfunction of the chloride channel protein. CFTR modulators correct the function of the defective protein and were a breakthrough. Ivacaftor/lumacaftor and elexacaftor/tezacaftor/ivacaftor combinations are registered in Russia, but their use is officially approved only for children aged 2 years and older.</p><p>The aim of the study was to present the first clinical case report describing the successful use of elexacaftor/tezacaftor/ivacaftor therapy in a 2-month-old critically ill patient with progressive respiratory failure. The drug was prescribed off-label by a committee decision. The treatment achieved a rapid, significant positive effect without serious adverse reactions, allowing the child to recover from a terminal condition.</p><p>Conclusion. This case demonstrates the feasibility and effectiveness of emergency use of modern CFTR modulators in infants with life-threatening CF. This successful experience justifies the need to revise and possibly expand the age-specific indications for targeted CF therapy in the clinical guidelines.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>муковисцидоз</kwd><kwd>CFTR-модуляторы</kwd><kwd>элексакафтор/тезакафтор/ивакафтор</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cystic fibrosis</kwd><kwd>CFTR modulators</kwd><kwd>elexacaftor/tezacaftor/ivacaftor</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">Guo J., Garratt A., Hill A. Worldwide rates of diagnosis and effective treatment for cystic fibrosis. J. 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