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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">317</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2019-9-1-83-91</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">Clinical and genetic characteristics of the syndrome of contractures of the limbs and face, hypothony and psychomotor retardation (OMIM: 616 266), caused by mutations in the NALCN gene</article-title><trans-title-group xml:lang="ru"><trans-title>Клинико-генетические характеристики синдрома контрактур конечностей и лица, гипотонии и задержки психомоторного развития (OMIM:616 266), обусловленного мутациями в гене NALCN</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5871-8005</contrib-id><name-alternatives><name xml:lang="en"><surname>Borovikov</surname><given-names>A. O.</given-names></name><name xml:lang="ru"><surname>Боровиков</surname><given-names>А. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>1 Moskvorech’e St., Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><bold>Артем Олегович Боровиков </bold></p><p><italic>115478 Москва, ул. Москворечье, 1</italic></p></bio><email>borovikov33@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5819-4835</contrib-id><name-alternatives><name xml:lang="en"><surname>Sharkova</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Шаркова</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>1 Moskvorech’e St., Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, ул. Москворечье, 1</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1285-9093</contrib-id><name-alternatives><name xml:lang="en"><surname>Ryzhkova</surname><given-names>O. P.</given-names></name><name xml:lang="ru"><surname>Рыжкова</surname><given-names>О. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>1 Moskvorech’e St., Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, ул. Москворечье, 1</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5474-4713</contrib-id><name-alternatives><name xml:lang="en"><surname>Chukhrova</surname><given-names>A. L.</given-names></name><name xml:lang="ru"><surname>Чухрова</surname><given-names>А. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>1 Moskvorech’e St., Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, ул. Москворечье, 1</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4905-1303</contrib-id><name-alternatives><name xml:lang="en"><surname>Schagina</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Щагина</surname><given-names>О. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>1 Moskvorech’e St., Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, ул. Москворечье, 1</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2672-6294</contrib-id><name-alternatives><name xml:lang="en"><surname>Markova</surname><given-names>T. V.</given-names></name><name xml:lang="ru"><surname>Маркова</surname><given-names>Т. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic>1 Moskvorech’e St., Moscow 115478</italic></p></bio><bio xml:lang="ru"><p><italic>115478 Москва, ул. Москворечье, 1</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5602-2805</contrib-id><name-alternatives><name xml:lang="en"><surname>Dadali</surname><given-names>E. L.</given-names></name><name xml:lang="ru"><surname>Дадали</surname><given-names>Е. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><italic><italic>1 Moskvorech’e St., Moscow 115478, </italic></italic></p><p><italic>1 Ostrovityanova St., Moscow 117997</italic><italic/></p></bio><bio xml:lang="ru"><p><italic><italic>115478 Москва, ул. Москворечье, 1, </italic></italic></p><p><italic>117997 Москва, ул. Островитянова, 1</italic></p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Medical Genetics</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Медико-генетический научный центр»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">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><pub-date date-type="pub" iso-8601-date="2019-04-24" publication-format="electronic"><day>24</day><month>04</month><year>2019</year></pub-date><volume>9</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>83</fpage><lpage>91</lpage><history><date date-type="received" iso-8601-date="2019-04-24"><day>24</day><month>04</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-04-24"><day>24</day><month>04</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Borovikov A.O., Sharkova I.V., Ryzhkova O.P., Chukhrova A.L., Schagina O.A., Markova T.V., Dadali E.L.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Боровиков А.О., Шаркова И.В., Рыжкова О.П., Чухрова А.Л., Щагина О.А., Маркова Т.В., Дадали Е.Л.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Borovikov A.O., Sharkova I.V., Ryzhkova O.P., Chukhrova A.L., Schagina O.A., Markova T.V., Dadali E.L.</copyright-holder><copyright-holder xml:lang="ru">Боровиков А.О., Шаркова И.В., Рыжкова О.П., Чухрова А.Л., Щагина О.А., Маркова Т.В., Дадали Е.Л.</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/317">https://nmb.abvpress.ru/jour/article/view/317</self-uri><abstract xml:lang="en"><p>A description of the clinical and genetic characteristics of the syndrome of congenital contractures of the limbs and face in combination with muscular hypotonia and psychomotor retardation of 2 patients from Russia is presented. As a result of full-exome DNA sequencing, 2 heterozygous missense mutations c 4355T C and c.3541C G were found in the NALCN gene, leading to amino acid substitutions at the functionally important center of the protein molecule. The effect of identified mutations in the NALCN gene on the function of its protein and approaches to the differential diagnosis of congenital contracture syndrome of the extremities and face in combination with muscular hypotonia and psychomotor retardation with monogenic variants of distal arthrogryposis with autosomal dominant type of inheritance are discussed.</p></abstract><trans-abstract xml:lang="ru"><p>Представлено описание клинико-генетических характеристик синдрома врожденных контрактур конечностей и лица в сочетании с мышечной гипотонией и задержкой психомоторного развития 2 пациентов из России. В результате полноэкзомного секвенирования ДНК у пациентов обнаружены 2 гетерозиготные миссенс-мутации c.4355T&gt;C и c.3541C&gt;G в гене NALCN, приводящие к аминокислотным заменам в функционально значимом центре белковой молекулы. Обсуждается влияние выявленных мутаций в гене NALCN на функцию его белка и подходы к дифференциальной диагностике синдрома врожденных контрактур конечностей и лица в сочетании с мышечной гипотонией и задержкой психомоторного развития с моногенными вариантами дистальных артрогрипозов с аутосомно-доминантным типом наследования.</p></trans-abstract><kwd-group xml:lang="en"><kwd>syndrome of congenital contractures of the limbs and face in combination with muscular hypotonia and psychomotor retardation</kwd><kwd>autosomal dominant type of inheritance</kwd><kwd>NALCN gene</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>синдром врожденных контрактур конечностей и лица в сочетании с мышечной гипотонией и задержкой психомоторного развития</kwd><kwd>аутосомно-доминантный тип наследования</kwd><kwd>ген NALCN</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Chong, J.X., McMillin M.J., Shively K.M. et al. 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