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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">nnp</journal-id><journal-title-group><journal-title xml:lang="en">Neurology, Neuropsychiatry, Psychosomatics</journal-title><trans-title-group xml:lang="ru"><trans-title>Неврология, нейропсихиатрия, психосоматика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-2711</issn><issn pub-type="epub">2310-1342</issn><publisher><publisher-name>"IMA-Press", LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14412/2074-2711-2024-2S-51-56</article-id><article-id custom-type="elpub" pub-id-type="custom">nnp-2316</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL INVESTIGATIONS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ И МЕТОДИКИ</subject></subj-group></article-categories><title-group><article-title>Combined analysis of free kappa chains and central vein sign increases the specificity of multiple sclerosis diagnosis</article-title><trans-title-group xml:lang="ru"><trans-title>Комбинированный анализ свободных каппа-цепей и симптома центральной вены увеличивает специфичность диагностики рассеянного склероза</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8039-9194</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Набиев</surname><given-names>Ш. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Nabiev</surname><given-names>Sh. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шихмирза Рагибович Набиев - Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>Shikhmirza Ragibovich Nabiev - A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><email xlink:type="simple">nabievmd@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6312-8501</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джуккаева</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzhukkaeva</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-7976-9470</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Асведов</surname><given-names>М. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Asvedov</surname><given-names>M. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Прохоров</surname><given-names>Д. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Prokhorov</surname><given-names>D. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-7367-1995</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Попова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Popova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3524-3494</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гринюк</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Grinyuk</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-7310-118X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Магомадова</surname><given-names>П. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Magomadova</surname><given-names>P. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-5637-7189</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Апевалова</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Apevalova</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7330-633X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воскресенская</surname><given-names>О. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Voskresenskaya</surname><given-names>O. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника нервных болезней им. А.Я. Кожевникова, кафедра нервных болезней и нейрохирургии Института клинической медицины им. Н.В. Склифосовского</p><p>119021, Москва, ул. Россолимо, 11, стр. 1</p></bio><bio xml:lang="en"><p>A.Ya. Kozhevnikov Clinic of Nervous System Diseases, Department of Nervous System Diseases and Neurosurgery, N.V. Sklifosovsky Institute of Clinical Medicine</p><p>11, Rossolimo St., Build. 1, Moscow 119021</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАОУ ВО «Первый Московский государственный медицинский университет им. И.М. Сеченова» Минздрава России (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>07</day><month>08</month><year>2024</year></pub-date><volume>16</volume><issue>0</issue><issue-title>(Suppl. 2)</issue-title><fpage>51</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Nabiev S.R., Dzhukkaeva S.A., Asvedov M.S., Prokhorov D.E., Popova E.V., Grinyuk V.V., Magomadova P.R., Apevalova A.R., Voskresenskaya O.N., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Набиев Ш.Р., Джуккаева С.А., Асведов М.Ш., Прохоров Д.Е., Попова Е.В., Гринюк В.В., Магомадова П.Р., Апевалова А.Р., Воскресенская О.Н.</copyright-holder><copyright-holder xml:lang="en">Nabiev S.R., Dzhukkaeva S.A., Asvedov M.S., Prokhorov D.E., Popova E.V., Grinyuk V.V., Magomadova P.R., Apevalova A.R., Voskresenskaya O.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://nnp.ima-press.net/nnp/article/view/2316">https://nnp.ima-press.net/nnp/article/view/2316</self-uri><abstract><sec><title>Objective</title><p>Objective: to determine the sensitivity and specificity of simultaneous analysis of the central vein sign (CVS) and the concentration of free kappa chains (FKC) in cerebrospinal fluid (CSF) in the diagnosis of multiple sclerosis (MS).</p></sec><sec><title>Material and methods</title><p>Material and methods. Eighty patients participated in the study. The main group comprised 54 patients who had been diagnosed with MS according to the 2017 McDonald criteria. The comparison group comprised 26 patients with other diseases of the central nervous system. An enzyme-linked immunosorbent assay was used to determine the concentration of FKC in the CSF. MRI of the brain was performed in all patients. The total and relative number of lesions with CVS were calculated.</p></sec><sec><title>Results</title><p>Results. An increased level of FKC in the CSF and a higher frequency of lesions with CVS were found in the group of MS patients compared to the control group (p&lt;0.001). The sensitivity of the integrated laboratory and radiological model was 96.3 %, the specificity – 96.2 %.</p></sec><sec><title>Conclusion</title><p>Conclusion. A comprehensive laboratory and radiological model based on the simultaneous analysis of FKC and CVS has high sensitivity and specificity parameters for the diagnosis of MS. This paves the way for the further inclusion of these two markers in the criteria for the diagnosis of the disease.</p></sec></abstract><trans-abstract xml:lang="ru"><p>Цель исследования – определить чувствительность и специфичность одновременного анализа симптома центральной вены (СЦВ) и концентрации свободных каппа-цепей (СКЦ) в цереброспинальной жидкости (ЦСЖ) в диагностике рассеянного склероза (РС).</p><sec><title>Материал и методы</title><p>Материал и методы. В исследование было включено 80 пациентов. В основную группу вошли 54 пациента, которым был установлен диагноз РС на основании критериев McDonald 2017 г. В группу сравнения было включено 26 пациентов с другими заболеваниями центральной нервной системы. Для определения концентрации СКЦ в ЦСЖ использовался иммуноферментный анализ. Всем пациентам была выполнена МРТ головного мозга. Подсчитывалось общее и относительное количество очагов с СЦВ.</p></sec><sec><title>Результаты</title><p>Результаты. В группе пациентов с РС выявлены повышенное содержание СКЦ в ЦСЖ и более высокая частота встречаемости очагов с СЦВ относительно группы сравнения (p&lt;0,001). Чувствительность комплексной лабораторно-радиологической модели составила 96,3%, специфичность – 96,2%.</p></sec><sec><title>Заключение</title><p>Заключение. Комплексная лабораторно-радиологическая модель, основанная на одновременном анализе СКЦ и СЦВ имеет высокие параметры чувствительности и специфичности в отношении диагностики РС. Это создает предпосылки для дальнейшего включения обоих этих маркеров в критерии диагностики заболевания.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>рассеянный склероз</kwd><kwd>симптом центральной вены</kwd><kwd>каппа-цепи</kwd><kwd>критерии McDonald.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>multiple sclerosis</kwd><kwd>central vein symptom</kwd><kwd>kappa chains</kwd><kwd>MacDonald criteria</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование не имело спонсорской поддержки</funding-statement><funding-statement xml:lang="en">The investigation has not been sponsored</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Thompson AJ, Banwell BL, Barkhof F, et al. Diagnosis of multiple sclerosis: 2017 revisions of the McDonald criteria. Lancet Neurol. 2018 Feb;17(2):162-73. doi: 10.1016/S1474-4422(17)30470-2. Epub 2017 Dec 21.</mixed-citation><mixed-citation xml:lang="en">Thompson AJ, Banwell BL, Barkhof F, et al. Diagnosis of multiple sclerosis: 2017 revisions of the McDonald criteria. Lancet Neurol. 2018 Feb;17(2):162-73. doi: 10.1016/S1474-4422(17)30470-2. Epub 2017 Dec 21.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Solomon AJ. Diagnosis, Differential Diagnosis, and Misdiagnosis of Multiple Sclerosis. Continuum (Minneap Minn). 2019 Jun;25(3):611-35. doi: 10.1212/CON.0000000000000728</mixed-citation><mixed-citation xml:lang="en">Solomon AJ. Diagnosis, Differential Diagnosis, and Misdiagnosis of Multiple Sclerosis. Continuum (Minneap Minn). 2019 Jun;25(3):611-35. doi: 10.1212/CON.0000000000000728</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Джуккаева СА, Ермилова ЕВ, Набиев ШР, Воскресенская ОН. Несвоевременная диагностика заболевания спектра оптиконевромиелита. Неврология, нейропсихиатрия, психосоматика. 2023;15(Прил. 1):31-4. doi: 10.14412/2074-2711-2023-1S-31-34</mixed-citation><mixed-citation xml:lang="en">Dzhukkaeva SA, Ermilova EV, Nabiev SR, Voskresenskaya ON. Delayed diagnosis of the neuromyelitis optica spectrum disorder. Nevrologiya, neiropsikhiatriya, psikhosomatika = Neurology, Neuropsychiatry, Psychosomatics. 2023;15:31-4. doi: 10.14412/2074-2711-2023-1S-31-34 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Solomon AJ, Naismith RT, Cross AH. Misdiagnosis of multiple sclerosis: Impact of the 2017 McDonald criteria on clinical practice. Neurology. 2019 Jan 1;92(1):26-33. doi: 10.1212/WNL.0000000000006583. Epub 2018 Oct 31.</mixed-citation><mixed-citation xml:lang="en">Solomon AJ, Naismith RT, Cross AH. Misdiagnosis of multiple sclerosis: Impact of the 2017 McDonald criteria on clinical practice. Neurology. 2019 Jan 1;92(1):26-33. doi: 10.1212/WNL.0000000000006583. Epub 2018 Oct 31.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Carta S, Ferraro D, Ferrari S, et al. Oligoclonal bands: clinical utility and interpretation cues. Crit Rev Clin Lab Sci. 2022 Sep;59(6):391-404. doi: 10.1080/10408363.2022.2039591. Epub 2022 Mar 11.</mixed-citation><mixed-citation xml:lang="en">Carta S, Ferraro D, Ferrari S, et al. Oligoclonal bands: clinical utility and interpretation cues. Crit Rev Clin Lab Sci. 2022 Sep;59(6):391-404. doi: 10.1080/10408363.2022.2039591. Epub 2022 Mar 11.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Аббас АК, Лихтман ЭГ, Пиллаи Ш. Основы иммунологии. Функции иммунной системы и их нарушения: учебник: Пер. с англ. Москва: ГЭОТАР-Медиа; 2022. 408 с. doi: 10.33029/9704-6677-3-BIM-2022-1-408</mixed-citation><mixed-citation xml:lang="en">Abbas AK, Lichtman EG, Pillai S. Fundamentals of immunology. Functions of the immune system and their disorders: textbook: Trans. from English. Moscow: GEOTAR-Media; 2022. 408 p. doi: 10.33029/9704-6677-3-BIM-2022-1-408 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Arneth B, Kraus J. The Use of Kappa Free Light Chains to Diagnose Multiple Sclerosis. Medicina (Kaunas). 2022 Oct 24;58(11):1512. doi: 10.3390/medicina58111512</mixed-citation><mixed-citation xml:lang="en">Arneth B, Kraus J. The Use of Kappa Free Light Chains to Diagnose Multiple Sclerosis. Medicina (Kaunas). 2022 Oct 24;58(11):1512. doi: 10.3390/medicina58111512</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Chaaban L, Safwan N, Moussa H, et al. Central vein sign: A putative diagnostic marker for multiple sclerosis. Acta Neurol Scand. 2022 Mar;145(3):279-87. doi: 10.1111/ane.13553. Epub 2021 Nov 18.</mixed-citation><mixed-citation xml:lang="en">Chaaban L, Safwan N, Moussa H, et al. Central vein sign: A putative diagnostic marker for multiple sclerosis. Acta Neurol Scand. 2022 Mar;145(3):279-87. doi: 10.1111/ane.13553. Epub 2021 Nov 18.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Набиев ШР, Джуккаева СА, Асведов МШ, Воскресенская ОН. Симптом центральной вены в диагностике рассеянного склероза. Неврология, нейропсихиатрия, психосоматика. 2024;16(2):14-8. doi: 10.14412/2074-2711-2024-2-14-18</mixed-citation><mixed-citation xml:lang="en">Nabiev ShR, Dzhukkaeva SA, Asvedov MS, Voskresenskaya ON. The central vein sign in the diagnosis of multiple sclerosis. Nevrologiya, neiropsikhiatriya, psikhosomatika = Neurology, Neuropsychiatry, Psychosomatics. 2024;16(2):14-18. doi: 10.14412/2074-2711-2024-2-14-18 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Белов СЕ, Губский ИЛ, Лелюк ВГ, Бойко АН. Использование симптома центральной вены для дифференциальной диагностики демиелинизирующих заболеваний центральной нервной системы. Медицина экстремальных ситуаций. 2021;(3):131-6. doi: 10.47183/mes.2021.021</mixed-citation><mixed-citation xml:lang="en">Belov SE, Gubsky IL, Lelyuk VG, Boyko AN. Central vein sign for differential diagnosis of demyelinating diseases of CNS. Meditsina ekstremal'nykh situatsiy = Extreme Medicine. 2021;(3):131-6. doi: 10.47183/mes.2021.021 (In Russ.)].</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Bhandari A, Xiang H, Lechner-Scott J, Agzarian M. Central vein sign for multiple sclerosis: A systematic review and meta-analysis. Clin Radiol. 2020 Jun;75(6):479.e9-479.e15. doi: 10.1016/j.crad.2020.01.011. Epub 2020 Mar 3.</mixed-citation><mixed-citation xml:lang="en">Bhandari A, Xiang H, Lechner-Scott J, Agzarian M. Central vein sign for multiple sclerosis: A systematic review and meta-analysis. Clin Radiol. 2020 Jun;75(6):479.e9-479.e15. doi: 10.1016/j.crad.2020.01.011. Epub 2020 Mar 3.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Castellaro M, Tamanti A, Pisani AI, et al. The Use of the Central Vein Sign in the Diagnosis of Multiple Sclerosis: A Systematic Review and Meta-analysis. Diagnostics (Basel). 2020 Nov 29;10(12):1025. doi: 10.3390/diagnostics10121025</mixed-citation><mixed-citation xml:lang="en">Castellaro M, Tamanti A, Pisani AI, et al. The Use of the Central Vein Sign in the Diagnosis of Multiple Sclerosis: A Systematic Review and Meta-analysis. Diagnostics (Basel). 2020 Nov 29;10(12):1025. doi: 10.3390/diagnostics10121025</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Белов СЕ, Бойко АН. Симптом центральной вены в дифференциальной диагностике рассеянного склероза. Неврология, нейропсихиатрия, психосоматика. 2020;12(1S):29-32. doi: 10.14412/2074-2711-2020-1S-29-32</mixed-citation><mixed-citation xml:lang="en">Belov SE, Boyko AN. The central vein sign in the differential diagnosis of multiple sclerosis. Nevrologiya, neiropsikhiatriya, psikhosomatika = Neurology, Neuropsychiatry, Psychosomatics. 2020;12(1S):29-32. doi: 10.14412/2074-2711-2020-1S-29-32 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Белов СЕ, Долгушин МБ, Бойко АН. Симптом центральной вены в диагностике и дифференциальной диагностике рассеянного склероза. Журнал неврологии и психиатрии им. С.С. Корсакова. Спецвыпуски. 2023;123(7-2):142. doi: 10.17116/jnevro2023123072142</mixed-citation><mixed-citation xml:lang="en">Belov SE, Dolgushin MB, Boyko AN. Symptom of the central vein in the diagnosis and differential diagnosis of multiple sclerosis. Zhurnal nevrologii i psikhiatriiimeni S.S. Korsakova = S.S. Korsakov Journal of Neurology and Psychiatry. 2023;123(7-2):142. doi: 10.17116/jnevro2023123072142 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Hegen H, Walde J, Berek K, et al. Cerebrospinal fluid kappa free light chains for the diagnosis of multiple sclerosis: A systematic review and meta-analysis. Mult Scler. 2023 Feb;29(2):169-81. doi: 10.1177/13524585221134213. Epub 2022 Dec 1.</mixed-citation><mixed-citation xml:lang="en">Hegen H, Walde J, Berek K, et al. Cerebrospinal fluid kappa free light chains for the diagnosis of multiple sclerosis: A systematic review and meta-analysis. Mult Scler. 2023 Feb;29(2):169-81. doi: 10.1177/13524585221134213. Epub 2022 Dec 1.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Levraut M, Laurent-Chabalier S, Ayrignac X, et al; Societe Francophone de la Sclerose En Plaques (SFSEP). Kappa Free Light Chain Biomarkers Are Efficient for the Diagnosis of Multiple Sclerosis: A Large Multicenter Cohort Study. Neurol Neuroimmunol Neuroinflamm. 2022 Nov 14;10(1):e200049. doi: 10.1212/NXI.00000000002000491.</mixed-citation><mixed-citation xml:lang="en">Levraut M, Laurent-Chabalier S, Ayrignac X, et al; Societe Francophone de la Sclerose En Plaques (SFSEP). Kappa Free Light Chain Biomarkers Are Efficient for the Diagnosis of Multiple Sclerosis: A Large Multicenter Cohort Study. Neurol Neuroimmunol Neuroinflamm. 2022 Nov 14;10(1):e200049. doi: 10.1212/NXI.0000000000200049</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
