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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">Annals of Clinical and Experimental Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Annals of Clinical and Experimental Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Анналы клинической и экспериментальной неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-5473</issn><issn publication-format="electronic">2409-2533</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1213</article-id><article-id pub-id-type="doi">10.17816/ACEN.1213</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные статьи</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">Characteristics of Patients with Hereditary Transthyretin Amyloid Polyneuropathy and Chronic Idiopathic Axonal Polyneuropathy in Russia: PRIMER Study Results</article-title><trans-title-group xml:lang="ru"><trans-title>Характеристики пациентов с наследственной формой транстиретиновой амилоидной полинейропатии и хронической идиопатической аксональной полинейропатией в российской популяции: результаты исследования «ПРАЙМЕР»</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3956-6362</contrib-id><name-alternatives><name xml:lang="en"><surname>Suponeva</surname><given-names>Natalya A.</given-names></name><name xml:lang="ru"><surname>Супонева</surname><given-names>Наталья Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Corresponding Member of RAS, Director of the Institute of Neurorehabilitation and Restorative Technologies</p></bio><bio xml:lang="ru"><p>д-р мед. наук, член-корреспондент РАН, директор Института нейрореабилитации и восстановительных технологий</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5937-9463</contrib-id><name-alternatives><name xml:lang="en"><surname>Zinovieva</surname><given-names>Olga E.</given-names></name><name xml:lang="ru"><surname>Зиновьева</surname><given-names>Ольга Евгеньевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Department of nervous system diseases and neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор кафедры нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3181-4229</contrib-id><name-alternatives><name xml:lang="en"><surname>Stuchevskaya</surname><given-names>Fatima R.</given-names></name><name xml:lang="ru"><surname>Стучевская</surname><given-names>Фатима Рамазановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Associate Professor, Neurology department, neurologist, Head, Neurological department No. 3</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент каф. неврологии, врач-невролог, врач-невролог, зав. неврологическим отделением № 3</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0713-9836</contrib-id><name-alternatives><name xml:lang="en"><surname>Sakovets</surname><given-names>Tatyana G.</given-names></name><name xml:lang="ru"><surname>Саковец</surname><given-names>Татьяна Геннадьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Associate Professor, Neurology and rehabilitation department, neurologist</p></bio><bio xml:lang="ru"><p>канд. мед. наук, врач-невролог, доцент каф. неврологии и реабилитации</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff6"/><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7924-3405</contrib-id><name-alternatives><name xml:lang="en"><surname>Grishina</surname><given-names>Darya A.</given-names></name><name xml:lang="ru"><surname>Гришина</surname><given-names>Дарья Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Head, Center for Peripheral Nervous System Diseases, Institute of Clinical and Preventive Neurology</p></bio><bio xml:lang="ru"><p>канд. мед. наук, рук. Центра заболеваний периферической нервной системы Института клинической и профилактической неврологии</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-5683-0934</contrib-id><name-alternatives><name xml:lang="en"><surname>Kazieva</surname><given-names>Maria S.</given-names></name><name xml:lang="ru"><surname>Казиева</surname><given-names>Мария Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>neurologist</p></bio><bio xml:lang="ru"><p>врач-невролог</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1233-7626</contrib-id><name-alternatives><name xml:lang="en"><surname>Safiulina</surname><given-names>Elvira I.</given-names></name><name xml:lang="ru"><surname>Сафиулина</surname><given-names>Эльвира Ирековна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), neurologist</p></bio><bio xml:lang="ru"><p>канд. мед. наук, врач-невролог</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-3407-7220</contrib-id><name-alternatives><name xml:lang="en"><surname>Soloviev</surname><given-names>Anton P.</given-names></name><name xml:lang="ru"><surname>Соловьев</surname><given-names>Антон Павлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>medical advisor</p></bio><bio xml:lang="ru"><p>медицинский советник</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-9283-5714</contrib-id><name-alternatives><name xml:lang="en"><surname>Zorina</surname><given-names>Evgenia A.</given-names></name><name xml:lang="ru"><surname>Зорина</surname><given-names>Евгения Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head, Therapeutic direction</p></bio><bio xml:lang="ru"><p>руководитель терапевтического направления</p></bio><email>suponeva@neurology.ru</email><xref ref-type="aff" rid="aff8"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Neurology</institution></aff><aff><institution xml:lang="ru">Научный центр неврологии</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University (Sechenov University)</institution></aff><aff><institution xml:lang="ru">Первый Московский государственный медицинский университет имени И.М. Сеченова (Сеченовский университет)</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Medical Center “Reavita Med SPb”</institution></aff><aff><institution xml:lang="ru">Медицинский центр «Реавита Мед СПб»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">City Multidisciplinary Hospital No. 2</institution></aff><aff><institution xml:lang="ru">Городская многопрофильная больница № 2</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">First Pavlov State Medical University of St. Petersburg</institution></aff><aff><institution xml:lang="ru">Первый Санкт-Петербургский государственный медицинский университет имени академика И.П. Павлова</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Republican Clinical Hospital</institution></aff><aff><institution xml:lang="ru">Республиканская клиническая больница</institution></aff></aff-alternatives><aff-alternatives id="aff7"><aff><institution xml:lang="en">Kazan State Medical University</institution></aff><aff><institution xml:lang="ru">Казанский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff8"><aff><institution xml:lang="en">AstraZeneca Pharmaceuticals LLC</institution></aff><aff><institution xml:lang="ru">«АстраЗенека Фармасьютикалз»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-06" publication-format="electronic"><day>06</day><month>12</month><year>2024</year></pub-date><volume>18</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>12</fpage><lpage>26</lpage><history><date date-type="received" iso-8601-date="2024-10-17"><day>17</day><month>10</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-11-11"><day>11</day><month>11</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Suponeva N.A., Zinovieva O.E., Stuchevskaya F.R., Sakovets T.G., Grishina D.A., Kazieva M.S., Safiulina E.I., Soloviev A.P., Zorina E.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Супонева Н.А., Зиновьева О.Е., Стучевская Ф.Р., Саковец Т.Г., Гришина Д.А., Казиева М.С., Сафиулина Э.И., Соловьев А.П., Зорина Е.А.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Suponeva N.A., Zinovieva O.E., Stuchevskaya F.R., Sakovets T.G., Grishina D.A., Kazieva M.S., Safiulina E.I., Soloviev A.P., Zorina E.A.</copyright-holder><copyright-holder xml:lang="ru">Супонева Н.А., Зиновьева О.Е., Стучевская Ф.Р., Саковец Т.Г., Гришина Д.А., Казиева М.С., Сафиулина Э.И., Соловьев А.П., Зорина Е.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://annaly-nevrologii.com/pathID/article/view/1213">https://annaly-nevrologii.com/pathID/article/view/1213</self-uri><abstract xml:lang="en"><p>Introduction. Hereditary transthyretin amyloidosis with polyneuropathy (hATTR-PN) is a severe progressive hereditary disease. Even with the availability of genetic testing for transthyretin (TTR) gene variants, timely hATTR-PN diagnosis remains challenging due to a great variability in its clinical presentation. Patients with hATTR-PN are often misdiagnosed with chronic idiopathic axonal polyneuropathy (CIAP).</p> <p>The objective of our study is to describe the baseline electrophysiological, clinical, and demographic characteristics of hATTR-PN and CIAP patients and to establish patients' pre-selection criteria for genetic testing.</p> <p>Materials and methods. Retrospective analysis was performed in 42 hATTR-PN patients and 58 CIAP patients (according to diagnosis defined in medical records from 1 January 2017 to 1 March 2024). Demographic, clinical, and electrophysiological data were collected at diagnosis. To identify factors influencing the likelihood of the hATTR-PN presence, a logistic regression model including clinically relevant variables was developed.</p> <p>Results. The mean age of hATTR-PN and CIAP patients was 57.7 and 60.9 years, respectively. As compared with CIAP patients, those with hATTR-PN more frequently exhibited gait disturbances (64.3% vs 37.9%), autonomic (47.6% vs 12.1%), cardiac (35.7% vs 10.3%) and gastrointestinal symptoms (64.3% vs 12.1%), unintentional weight loss (45.2% vs 12.1%), and heart failure with preserved ejection fraction (26.2% vs 6.9%). Peripheral nerve conduction scores were also lower in the hATTR-PN group. In predicting hATTR-PN, the logistic regression model had a sensitivity of 91% and a specificity of 97%.</p> <p>Conclusion. Demographic, clinical, and electrophysiological characteristics of patients with hATTR-PN and CIAP were described. Based on the screening data, it is feasible to predict hATTR-PN in CIAP patients with relatively high accuracy, sensitivity, and specificity.</p></abstract><trans-abstract xml:lang="ru"><p>Введение. Наследственная транстиретиновая амилоидная полинейропатия (hATTR-PN) — прогрессирующее тяжёлое наследственное заболевание. Несмотря на доступность генетического тестирования для выявления вариантов гена транстиретина (TTR), своевременная диагностика затруднена вследствие разнообразия клинических проявлений. Частым ошибочным диагнозом является хроническая идиопатическая аксональная полинейропатия (ХИАП).</p> <p>Цель исследования — описание исходных электрофизиологических, клинических и демографических характеристик пациентов с hATTR-PN и ХИАП и подбор критериев для отбора пациентов, которые подлежат генетическому тестированию.</p> <p>Материалы и методы. Ретроспективный анализ проведён у 42 пациентов с hATTR-PN и 58 пациентов с ХИАП (диагноз установлен в медицинской документации с 01.01.2017 по 01.03.2024). Демографические и клинические характеристики, результаты электрофизиологического исследования были собраны на момент постановки диагноза. Клинически релевантные параметры включили в модель логистической регрессии для выявления факторов, влияющих на вероятность наличия hATTR-PN.</p> <p>Результаты. Средний возраст составил 57,7 (hATTR-PN) и 60,9 (ХИАП) года. В группе hATTR-PN по сравнению с ХИАП чаще встречались нарушения походки (64,3 и 37,9%), вегетативные симптомы (47,6 и 12,1%), проявления со стороны сердца (35,7 и 10,3%), желудочно-кишечного тракта (64,3 и 12,1%), непреднамеренная потеря веса (45,2 и 12,1%), сердечная недостаточность с сохранённой фракцией выброса (26,2 и 6,9%), были хуже показатели проводящей функции периферических нервов. Модель логистической регрессии показала чувствительность 91% и специфичность 97% в отношении предсказания наличия hATTR-PN.</p> <p>Заключение. Описаны демографические, клинические и электрофизиологические характеристики пациентов с hATTR-PN и ХИАП. На основании скрининговых данных возможно с хорошей точностью, чувствительностью и специфичностью предсказать наличие hATTR-PN у пациентов с ХИАП.</p></trans-abstract><kwd-group xml:lang="en"><kwd>transthyretin amyloidosis</kwd><kwd>polyneuropathy</kwd><kwd>transthyretin</kwd><kwd>screening tool</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>транстиретиновый амилоидоз</kwd><kwd>полинейропатия</kwd><kwd>транстиретин</kwd><kwd>скрининговый инструмент</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Luigetti M., Romano A., Di Paolantonio A. et al. 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