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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="other" 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">263</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2018-8-1-46-52</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Misdiagnosed case of transthyretin amyloidosis in a fully investigated patient</article-title><trans-title-group xml:lang="ru"><trans-title>Клинический случай транстиретинового амилоидоза с задержкой верификации диагноза у полностью обследованной больной</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1004-992X</contrib-id><name-alternatives><name xml:lang="en"><surname>Naumova</surname><given-names>E. S.</given-names></name><name xml:lang="ru"><surname>Наумова</surname><given-names>Е. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>naumovaES@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3292-2758</contrib-id><name-alternatives><name xml:lang="en"><surname>Nikitin</surname><given-names>S. S.</given-names></name><name xml:lang="ru"><surname>Никитин</surname><given-names>С. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7714-9538</contrib-id><name-alternatives><name xml:lang="en"><surname>Adyan</surname><given-names>T. A.</given-names></name><name xml:lang="ru"><surname>Адян</surname><given-names>Т. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6244-0867</contrib-id><name-alternatives><name xml:lang="en"><surname>Druzhinin</surname><given-names>D. S.</given-names></name><name xml:lang="ru"><surname>Дружинин</surname><given-names>Д. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Varshavskiy</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Варшавский</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Medical Center “Practical Neurology”</institution></aff><aff><institution xml:lang="ru">Медицинский центр «Практическая неврология»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Research Center of Medical Genetics</institution></aff><aff><institution xml:lang="ru">ФБГНУ «Медико-генетический научный центр»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Российский национальный исследовательский медицинский университет им. Н.И. Пирогова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Yaroslavl State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Ярославский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-04-30" publication-format="electronic"><day>30</day><month>04</month><year>2018</year></pub-date><volume>8</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>46</fpage><lpage>52</lpage><history><date date-type="received" iso-8601-date="2018-04-30"><day>30</day><month>04</month><year>2018</year></date><date date-type="accepted" iso-8601-date="2018-04-30"><day>30</day><month>04</month><year>2018</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Naumova E.S., Nikitin S.S., Adyan T.A., Druzhinin D.S., Varshavskiy V.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Наумова Е.С., Никитин С.С., Адян Т.А., Дружинин Д.С., Варшавский В.А.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Naumova E.S., Nikitin S.S., Adyan T.A., Druzhinin D.S., Varshavskiy V.A.</copyright-holder><copyright-holder xml:lang="ru">Наумова Е.С., Никитин С.С., Адян Т.А., Дружинин Д.С., Варшавский В.А.</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/263">https://nmb.abvpress.ru/jour/article/view/263</self-uri><abstract xml:lang="en"><p>The DNA analysis revealed a transthyretin amyloidosis with a rare Phe53Leu mutation in a woman of 62 y.o. with the late onset progressive generalized axonal sensomotor neuropathy, dry eye syndrome, and an episode of severe unintentionally weight loss. The same mutation was found in her healthy 34 y.o. son, but not in a 42 y.o. daughter. The Congo red staining were negative in nerve and salivar gland biopsies samples. The reassessment of the transthyretin amyloidosis “red flags” showed that the patient fulfilled the criteria of the disease and the absence of amyloid deposition was not the ground to reject the hereditary cause of the condition. The reasons of the misdiagnosis are discussed.</p></abstract><trans-abstract xml:lang="ru"><p><italic>Представлен случай подтвержденного молекулярно-генетическими методами транстиретинового (ТТР) амилоидоза с поздним началом с редкой мутацией Phe53Leu у женщины 62 лет с прогрессирующей генерализованной сенсомоторной нейропатией, синдромом сухого глаза и рта, быстрой необъяснимой потерей массы тела. Аналогичная мутация выявлена у ее здорового сына 34 лет и не обнаружена у дочери 42 лет. Несмотря на отсутствие амилоида при окраске Конго красным в ранее исследованных биоптатах икроножного нерва и слюнной железы, поставлен диагноз ТТР амилоидоза. Сопоставление основных признаков и симптомов с общепринятыми «красными флагами» для пациентов с ТТР амилоидозом показало соответствие клинической картины наследственному заболеванию, несмотря на отсутствие депозитов амилоида. Обсуждаются причины недостаточной диагностической настороженности.</italic></p></trans-abstract><kwd-group xml:lang="en"><kwd>amyloidosis</kwd><kwd>transthyretin amyloidosis</kwd><kwd>Phe53Leu</kwd><kwd>nerve biopsy</kwd><kwd>dry eye syndrome</kwd><kwd>sensomotor neuropathy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>амилоидоз</kwd><kwd>транстиретиновый амилоидоз</kwd><kwd>Phe53Leu</kwd><kwd>биопсия нерва</kwd><kwd>синдром сухого глаза</kwd><kwd>сенсомоторная нейропатия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Zinov’eva O.E., Safiulina E.I. Transthyretin amyloid polyneuropathy: pathogenesis, clinical features, treatment perspectives. Manage pain 2017;(4):12–5. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Зиновьева О.Е., Сафиулина Э.И. Транстиретиновая амилоидная полинейропатия: патогенез, клинические особенности, перспективы лечения. 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