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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-231-11-204-214</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-2984</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>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Развитие ювенильного артрита, ассоциированного с болезнью Крона у 13-летней девочки с Нунан-подобным синдромом с выпадением волос в фазе анагена, вызванным миссенс-вариантом в гене SHOC2</article-title><trans-title-group xml:lang="en"><trans-title>Development of juvenile arthritis associated with Crohn’s disease in a 13-year-old girl with Noonan-like syndrome with anagen hair loss caused by a missense variant in the SHOC2 gene: a clinical case and review of the literature</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4147-2309</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волгина</surname><given-names>С. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Volgina</surname><given-names>S. Ya.</given-names></name></name-alternatives><email xlink:type="simple">volgina_svetlana@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/0009-0005-8926-0136</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курбанова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurbanova</surname><given-names>Yo. S.</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/0009-0008-5468-7166</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абубакаров</surname><given-names>А. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Abubakarov</surname><given-names>A. Sh.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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/0009-0000-1547-7889</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ниматулаев</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Nimatulaev</surname><given-names>A. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8582-592X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гамирова</surname><given-names>Р. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Gamirova</surname><given-names>R. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2839-100X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сайфутдинов</surname><given-names>Р. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Saifutdinov</surname><given-names>R. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральное государственное бюджетное образовательное учреждение высшего образования «Казанский государственный медицинский университет» Министерства здравоохранения Российской Федерации<country>Россия</country></aff><aff xml:lang="en">Kazan State Medical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Федеральное государственное автономное образовательное учреждение высшего образования Российский национальный исследовательский медицинский университет имени Н.И. Пирогова Минздрава России<country>Россия</country></aff><aff xml:lang="en">N. I. Pirogov Russian National Research Medical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Федеральное государственное автономное образовательное учреждение высшего образования «Российский университет дружбы народов имени Патриса Лумумбы»<country>Россия</country></aff><aff xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru">Федеральное государственное автономное образовательное учреждение высшего образования «Казанский (Приволжский) федеральный университет»<country>Россия</country></aff><aff xml:lang="en">Kazan (Volga region) Federal University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru">Казанская государственная медицинская академия - филиал ФГБОУ ДПО РМАНПО Минздрава России<country>Россия</country></aff><aff xml:lang="en">Kazan State Medical Academy - Branch Campus of the Federal State Budgetary Educational Institution of Further Professional Education “Russian Medical Academy of Continuous Professional Education” of the Ministry of Healthcare of the Russian Federation<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>17</day><month>11</month><year>2024</year></pub-date><volume>0</volume><issue>11</issue><fpage>204</fpage><lpage>214</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Волгина С.Я., Курбанова Е.С., Абубакаров А.Ш., Ниматулаев А.М., Гамирова Р.Г., Сайфутдинов Р.Г., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Волгина С.Я., Курбанова Е.С., Абубакаров А.Ш., Ниматулаев А.М., Гамирова Р.Г., Сайфутдинов Р.Г.</copyright-holder><copyright-holder xml:lang="en">Volgina S.Y., Kurbanova Y.S., Abubakarov A.S., Nimatulaev A.M., Gamirova R.G., Saifutdinov R.G.</copyright-holder><license 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/2984">https://www.nogr.org/jour/article/view/2984</self-uri><abstract><p>Обоснование. Нунан-подобный синдром с выпадением волос в фазе анагена относится к RAS-патиям и характеризуется черепно-лицевыми особенностями, напоминающими синдром Нунан, спектром сердечно-сосудистых аномалий, когнитивным дефицитом и поведенческими расстройствами, низким ростом, обычно связанным с дефицитом гормона роста, уникальным сочетанием эктодермальных нарушений. Он возникает в результате миссенс-варианта (с. 4A&gt;G, с.Ser2Gly) в гене SHOC2, расположенном на хромосоме 10q25, который кодирует белок, облегчающий передачу сигналов по пути RAS-митоген-ассоциированной протеинкиназы, запускающих ряд клеточных процессов. Распространенность синдрома составляет менее, чем 1 на 1 000 000 (по всему миру). Получены данные о том, что нарушения уровня экспрессии и активации сигнального пути семейства RAS и его нижестоящих киназ, таких как Raf/MEK/ERK1-2, вносят вклад в патогенетические механизмы развития аутоиммунных заболеваний. Описание клинического случая. Нами представлен ранее не описанный в литературе клинический случай развития ювенильного артрита, ассоциированного с болезнью Крона у 13-летней девочки с Нунан-подобным синдром с выпадением волос в фазе анагена. При рождении у пациентки был диагностирован врожденный порок сердца (множественный дефект межпредсердной перегородки), корригированный в 4 года, суставной синдром дебютировал в 8 лет 4 мес, кишечный - в 10 лет 4 мес. Генетический анализ был проведен только в 10 лет 7 мес, получены результаты секвенирования ДНК и выявлен патогенный вариант нуклеотидной последовательности гена SHOC2 в гетерозиготном состоянии (c.4A&gt;G, p.Ser2Gly). В результате анализа клинических данных, проведенных лабораторно-инструментальных исследований выставлен диагноз: «Ювенильный артрит (пауциартикулярный вариант), ассоциированный с болезнью Крона (язвенный баугинит, язвенный илеит, катаральный еюнит, афтозный левосторонний колит, эрозивный гастрит). Нунан-подобный синдром с выпадением волос в стадии анагена 1. Гипопитуитаризм. Парциальный дефицит гормона роста. Состояние после пластики ДМПП». Девочка получала лечение: курс глюкокортикостероидов (метилпреднизолон) с постепенной отменой, метотрексат, адалимумаб и месалазин с положительной динамикой. Заключение. Врачам-педиатрам необходимо помнить о возможности развития аутоиммунных заболеваний у детей с НПС, необходимости их ранней диагностики, своевременного направления к специалистам и проведения адекватной терапии.</p></abstract><trans-abstract xml:lang="en"><p>Noonan-like syndrome with anagen hair loss is a RAS pathology and is characterized by craniofacial features resembling Noonan syndrome, a spectrum of cardiovascular abnormalities, cognitive deficits and behavioral distorders, short stature usually associated with growth hormone deficiency, a unique combination ectodermal disorders. It results from a missense variant (c.4A&gt;G, c.Ser2Gly) in the SHOC2 gene, located on chromosome 10q25, which encodes a protein that facilitates signaling through the RAS mitogen-associated protein kinase pathway, triggering a number of cellular processes. The prevalence of the syndrome is less than 1 in 1,000,000 (worldwide). Evidence has been obtained that disturbances in the level of expression and activation of the Ras family signaling pathway and its downstream kinases, such as Raf/MEK/ERK1-2, contribute to the pathogenetic mechanisms of the development of autoimmune diseases. Description of a clinical case. We present a previously undescribed clinical case of the development of juvenile arthritis associated with Crohn’s disease in a 13-year-old girl with Noonan-like syndrome with hair loss in the anagen phase. At birth, the patient was diagnosed with a congenital heart defect (multiple atrial septal defect), corrected at 4 years, articular syndrome debuted at 8 years 4 months, intestinal syndrome at 10 years 4 months. Genetic analysis was carried out only at 10 years 7 months, DNA sequencing results were obtained and a pathogenic variant of the nucleotide sequence of the SHOC2 gene was identified in a heterozygous state (c.4A&gt;G, p.Ser2Gly). As a result of the analysis of clinical data, laboratory and instrumental studies, a diagnosis was made: “Juvenile arthritis (pauciarticular variant) associated with Crohn’s disease (ulcerative bauginitis, ulcerative ileitis, catarrhal jeunitis, aphthous left-sided colitis, erosive gastritis). Noonan-like syndrome with hair loss in the anagen stage 1. Hypopituitarism. Partial growth hormone deficiency. Condition after ASD repair.” The girl received treatment: a course of glucocorticosteroids (methylprednisolone) with gradual withdrawal, methotrexate, adalimumab and mesalazine with positive dynamics. Conclusion. Pediatricians need to remember the possibility of developing autoimmune diseases in children with NPS, the need for their early diagnosis, timely referral to specialists and adequate therapy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>Нунан-подобный синдром</kwd><kwd>SHOC2</kwd><kwd>RAS-патия</kwd><kwd>болезнь Крона</kwd><kwd>ювенильный артрит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Children</kwd><kwd>Noonan-like syndrome</kwd><kwd>SHOC2</kwd><kwd>RAS-pathy</kwd><kwd>Crohn’s disease</kwd><kwd>juvenile arthritis</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">Noonan syndrome 1; NS1. # 163950. 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