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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">198</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2017-7-1-54-61</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">Familial amyloid polyneuropathy TTR Cys 114 in monozygotic twin brothers (clinical case)</article-title><trans-title-group xml:lang="ru"><trans-title>Семейная амилоидная полинейропатия TTR Cys 114 у монозиготных братьев-близнецов (клинический случай)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kovalchuk</surname><given-names>M. O.</given-names></name><name xml:lang="ru"><surname>Ковальчук</surname><given-names>М. О.</given-names></name></name-alternatives><address><country country="NL">Netherlands</country></address><bio xml:lang="en"><p>Utrecht, Netherlands</p></bio><bio xml:lang="ru"><p>Нидерланды, Утрехт</p></bio><email>mafkov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Strokov</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Строков</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 2, 8 Trubetskaya St., Moscow 119991, Russia</p></bio><bio xml:lang="ru"><p>Россия, 119991 Москва, ул. Трубецкая, 8, стр. 2</p></bio><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">University Medical Center Utrecht</institution></aff><aff><institution xml:lang="ru">Университетский медицинский центр Утрехта</institution></aff></aff-alternatives><aff-alternatives id="aff2"><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="2017-05-07" publication-format="electronic"><day>07</day><month>05</month><year>2017</year></pub-date><volume>7</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>54</fpage><lpage>61</lpage><history><date date-type="received" iso-8601-date="2017-05-07"><day>07</day><month>05</month><year>2017</year></date><date date-type="accepted" iso-8601-date="2017-05-07"><day>07</day><month>05</month><year>2017</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, Kovalchuk M.O., Strokov I.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, Ковальчук М.О., Строков И.А.</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">Kovalchuk M.O., Strokov I.A.</copyright-holder><copyright-holder xml:lang="ru">Ковальчук М.О., Строков И.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/198">https://nmb.abvpress.ru/jour/article/view/198</self-uri><abstract xml:lang="en"><p>Transthyretin amyloidosis (ATTR) is a hereditary autosomal dominant disease. Its symptoms depend on polymorphisms of the transthyretin gene and include disorders of the peripheral nervous system and internal organs. One of the rarest mutations of the transthyretin gene is tyrosine substitution for cysteine in position 114 (Tyr114Cys). One of the described characteristics of ATTR is the discordant phenotype in monozygotic twins. We present a case of ATTR Cys 114 in a Russian family with a pair of monozygotic twins discordant for ATTR.</p></abstract><trans-abstract xml:lang="ru"><p>Транстиретиновый амилоидоз (transthyretin amyloidosis, ATTR) – наследственное аутосомно-доминантное заболевание, проявления которого зависят от полиформизма гена транстиретина и включают поражение периферической нервной системы и внутренних органов. К наиболее редким мутациям гена транстиретина относится замена цистеина на тирозин в позиции 114 (Tyr114Cys). Одной из описанных особенностей течения ATTR является дискордантность симптоматики у монозиготных близнецов. Представлен случай ATTR Cys 114 в российской семье у монозиготных братьев-близнецов, дискордантных по течению данного заболевания.</p></trans-abstract><kwd-group xml:lang="en"><kwd>amyloidosis</kwd><kwd>transthyretin amyloidosis</kwd><kwd>ATTR Cys 114</kwd><kwd>familial amyloid polyneuropathy</kwd><kwd>monozygotic twins</kwd><kwd>discordance</kwd><kwd>nongenetic factors</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>амилоидоз</kwd><kwd>транстиретиновый амилоидоз</kwd><kwd>ATTR Cys 114</kwd><kwd>семейная амилоидная полинейропатия</kwd><kwd>монозиготные близнецы</kwd><kwd>дискордантность</kwd><kwd>негенетические факторы</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">1. Konigstein H. Uber amyloidose der haut. Arch Dermatol Syphylis 1925;148–330.</mixed-citation><mixed-citation xml:lang="ru">Konigstein H. Uber amyloidose der haut. 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