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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Neuromuscular Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Neuromuscular Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Нервно-мышечные болезни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-8721</issn><issn publication-format="electronic">2413-0443</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">682</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2025-15-4-41-45</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЙ РАЗБОР</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Aromatic L-amino acid decarboxylase deficiency: a familial case</article-title><trans-title-group xml:lang="ru"><trans-title>Дефицит декарбоксилазы ароматических L-аминокислот на примере семейного случая</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5818-3482</contrib-id><name-alternatives><name xml:lang="en"><surname>Shishkina</surname><given-names>Elena V.</given-names></name><name xml:lang="ru"><surname>Шишкина</surname><given-names>Елена Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Department of Nervous System Diseases, Faculty of General Medicine</p></bio><bio xml:lang="ru"><p>кафедра нервных болезней с курсом профессионального обучения лечебного факультета</p></bio><email>alenas1977@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kokh</surname><given-names>E. E.</given-names></name><name xml:lang="ru"><surname>Кох</surname><given-names>Э. Э.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alenas1977@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Krasnoyarsk State Medical University named after Prof. V.F. Voyno-Yasenetsky, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Красноярский государственный медицинский университет им. проф. В.Ф. Войно-Ясенецкого» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Krasnoyarsk Regional Medical and Genetic Center</institution></aff><aff><institution xml:lang="ru">КГБУЗ «Красноярский краевой медико-генетический центр»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-03-06" publication-format="electronic"><day>06</day><month>03</month><year>2026</year></pub-date><volume>15</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>41</fpage><lpage>45</lpage><history><date date-type="received" iso-8601-date="2026-03-05"><day>05</day><month>03</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-03-05"><day>05</day><month>03</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Shishkina E.V., Kokh E.E.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Шишкина Е.В., Кох Э.Э.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Shishkina E.V., Kokh E.E.</copyright-holder><copyright-holder xml:lang="ru">Шишкина Е.В., Кох Э.Э.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://nmb.abvpress.ru/jour/article/view/682">https://nmb.abvpress.ru/jour/article/view/682</self-uri><abstract xml:lang="en"><p>Aromatic L-amino acid decarboxylase deficiency is a severe, rare, genetic disorder of the neurotransmitter group caused by mutations in the <italic>DDC</italic> gene, characterized by impaired production of neurotransmitters such as dopamine, serotonin, norepinephrine, and adrenaline. As a result of their deficiency, children develop and rapidly progress to such basic clinical manifestations as gross delay in motor and psychore-speech development, episodes of oculogyric crises (episodically occurring con-current deviation of the eyes up, laterally and/or down lasting from several minutes to several hours) of varying severity and frequency, as well as a whole range of autonomic symptoms. Currently gene therapy is used in the Russian Federation for the treatment of this disease. In this regard, the problem of establishing/verifying a diagnosis for the treatment of patients with aromatic L-amino acid decarboxylase deficiency becomes particularly relevant.</p></abstract><trans-abstract xml:lang="ru"><p>Дефицит декарбоксилазы ароматических L-аминокислот – редкое тяжелое генетическое заболевание из группы нарушений нейротрансмиттеров, обусловленное вариантами гена <italic>DDC</italic>, характеризующееся нарушением выработки нейромедиаторов, таких как дофамин, серотонин, норадреналин и адреналин. Вследствие их дефицита у детей в раннем детском возрасте развиваются и быстро прогрессируют грубая задержка двигательного и психоречевого развития, эпизоды окулогирных кризов от нескольких минут до нескольких часов, разной степени выраженности и частоты, а также целый спектр вегетативных симптомов.</p> <p>В настоящее время для лечения данного заболевания в мире и в Российской Федерации применяется генная терапия. В связи с этим установление и верификация правильного диагноза дефицита декарбоксилазы ароматических L-аминокислот особенно актуальны для максимально раннего начала лечения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>aromatic L-amino acid decarboxylase deficiency</kwd><kwd>neuromediator</kwd><kwd>oculogyric crisis</kwd><kwd>epilepsy</kwd><kwd>psychomotor developmental delay</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>дефицит декарбоксилазы ароматических L-аминокислот</kwd><kwd>нейромедиатор</kwd><kwd>окулогирный криз</kwd><kwd>эпилепсия</kwd><kwd>задержка психоречевого развития</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Hyland K., Clayton P. Aromatic amino acid decarboxylase deficiency in twins. J Inherit Metab Dis 1990;13:301–4. DOI: 10.1007/BF01799380</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Himmelreich N., Montioli R., Bertoldi M. et al. 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