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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">1512</article-id><article-id pub-id-type="doi">10.17816/ACEN.1512</article-id><article-id pub-id-type="edn">FIAVAP</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">Divozilimab in neuromyelitis optica spectrum disorders: one-year interim analysis of the AQUARELLE clinical trial</article-title><trans-title-group xml:lang="ru"><trans-title>Дивозилимаб при заболеваниях спектра оптиконевромиелита: промежуточный анализ клинического исследования AQUARELLE за один год</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2975-4151</contrib-id><name-alternatives><name xml:lang="en"><surname>Boyko</surname><given-names>Alexey N.</given-names></name><name xml:lang="ru"><surname>Бойко</surname><given-names>Алексей Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Head, Department of neuroimmunology; Professor, Department of neurology, neurosurgery and medical genetics</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, рук. отдела нейроиммунологии; профессор каф. неврологии, нейрохирургии и медицинской генетики</p></bio><email>boykoan13@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1072-9968</contrib-id><name-alternatives><name xml:lang="en"><surname>Zakharova</surname><given-names>Mariya N.</given-names></name><name xml:lang="ru"><surname>Захарова</surname><given-names>Мария Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, chief researcher, Head, 6<sup>th</sup> Neurology department, Institute of Clinical and Preventive Neurology</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. 6-м неврологическим отделением Института клинической и профилактической неврологии</p></bio><email>zakharova@neurology.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7256-2668</contrib-id><name-alternatives><name xml:lang="en"><surname>Simaniv</surname><given-names>Taras O.</given-names></name><name xml:lang="ru"><surname>Симанив</surname><given-names>Тарас Олегович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), senior researcher, 6<sup>th</sup> Neurological department, Institute of Clinical and Preventive Neurology</p></bio><bio xml:lang="ru"><p>канд. мед. наук, с. н. с. 6-го неврологического отделения Института клинической и профилактической неврологии</p></bio><email>simaniv@neurology.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7093-9548</contrib-id><name-alternatives><name xml:lang="en"><surname>Goncharova</surname><given-names>Zoya A.</given-names></name><name xml:lang="ru"><surname>Гончарова</surname><given-names>Зоя Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Head, Department of nervous diseases and neurosurgery</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. каф. нервных болезней и нейрохирургии</p></bio><email>centrms@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9078-589X</contrib-id><name-alternatives><name xml:lang="en"><surname>Spirin</surname><given-names>Nikolay N.</given-names></name><name xml:lang="ru"><surname>Спирин</surname><given-names>Николай Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Head, Department of nervous diseases with medical genetics and neurosurgery</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. каф. нервных болезней с медицинской генетикой и нейрохирургией</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6715-8203</contrib-id><name-alternatives><name xml:lang="en"><surname>Totolyan</surname><given-names>Natalia A.</given-names></name><name xml:lang="ru"><surname>Тотолян</surname><given-names>Наталья Агафоновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Department of neurology</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор каф. неврологии</p></bio><email>ntotolyan@mail.ru</email><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bakhtiyarova</surname><given-names>Klara Z.</given-names></name><name xml:lang="ru"><surname>Бахтиярова</surname><given-names>Клара Закиевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Department of neurology</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор каф. неврологии</p></bio><email>angelika7d@mail.ru</email><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3092-5381</contrib-id><name-alternatives><name xml:lang="en"><surname>Greshnova</surname><given-names>Irina V.</given-names></name><name xml:lang="ru"><surname>Грешнова</surname><given-names>Ирина Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>deputy chief medical officer</p></bio><bio xml:lang="ru"><p>ам. главного врача по медицинской части</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5624-240X</contrib-id><name-alternatives><name xml:lang="en"><surname>Dudin</surname><given-names>Vyacheslav A.</given-names></name><name xml:lang="ru"><surname>Дудин</surname><given-names>Вячеслав Андреевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head, Department for the provision of primary specialized outpatient medical care in the field of "neurology"</p></bio><bio xml:lang="ru"><p>зав. отделением для оказания первичной специализированной медико-санитарной помощи в амбулаторных условиях по профилю «неврология»</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff9"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7938-3782</contrib-id><name-alternatives><name xml:lang="en"><surname>Korobko</surname><given-names>Denis S.</given-names></name><name xml:lang="ru"><surname>Коробко</surname><given-names>Денис Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), assistant, Department of clinical neurology, Faculty of medicine; Head, Regional Center for Multiple Sclerosis and Other Autoimmune Diseases of the Nervous System</p></bio><bio xml:lang="ru"><p>канд. мед. наук, ассистент каф. клинической неврологии лечебного факультета; зав. Областным центром рассеянного склероза и других аутоиммунных заболеваний нервной системы</p></bio><email>denis.s.korobko@gmail.com</email><xref ref-type="aff" rid="aff10"/><xref ref-type="aff" rid="aff11"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8706-7317</contrib-id><name-alternatives><name xml:lang="en"><surname>Kotov</surname><given-names>Sergey V.</given-names></name><name xml:lang="ru"><surname>Котов</surname><given-names>Сергей Викторович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Head, Department of neurology, Faculty of advanced medical training, Head, Neurological department for adults</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. каф. неврологии факультета усовершенствования врачей, рук. неврологического отделения для взрослых</p></bio><email>kotovsv@yandex.ru</email><xref ref-type="aff" rid="aff12"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7033-053X</contrib-id><name-alternatives><name xml:lang="en"><surname>Parshina</surname><given-names>Elena V.</given-names></name><name xml:lang="ru"><surname>Паршина</surname><given-names>Елена Валерьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), assistant, Department of neurology, psychiatry and narcology</p></bio><bio xml:lang="ru"><p>канд. мед. наук, ассистент каф. неврологии, психиатрии и наркологии</p></bio><email>parshina_elena_v@mail.ru</email><xref ref-type="aff" rid="aff13"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2594-461X</contrib-id><contrib-id contrib-id-type="scopus">6506805041</contrib-id><name-alternatives><name xml:lang="en"><surname>Poverennova</surname><given-names>Irina E.</given-names></name><name xml:lang="ru"><surname>Повереннова</surname><given-names>Ирина Евгеньевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Head, Department of neurology and neurosurgery</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. каф. неврологии и нейрохирургии</p></bio><email>i.e.poverennova@samsmu.ru</email><xref ref-type="aff" rid="aff14"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3358-5768</contrib-id><name-alternatives><name xml:lang="en"><surname>Lebedev</surname><given-names>Valeriy M.</given-names></name><name xml:lang="ru"><surname>Лебедев</surname><given-names>Валерий Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head, Department of neurology</p></bio><bio xml:lang="ru"><p>зав. отделением неврологии</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff15"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7947-4529</contrib-id><name-alternatives><name xml:lang="en"><surname>Smagina</surname><given-names>Inna V.</given-names></name><name xml:lang="ru"><surname>Смагина</surname><given-names>Инна Вадимовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Head, Department of neurology and neurosurgery with a course in advanced medical education</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. каф. неврологии и нейрохирургии с курсом ДПО</p></bio><email>voroba.nat@mail.ru</email><xref ref-type="aff" rid="aff16"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-7438-9751</contrib-id><name-alternatives><name xml:lang="en"><surname>Khairutdinova</surname><given-names>Diana F.</given-names></name><name xml:lang="ru"><surname>Хайрутдинова</surname><given-names>Диана Фаритовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head, Department of neurology</p></bio><bio xml:lang="ru"><p>зав. неврологическим отделением</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff17"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9199-7392</contrib-id><name-alternatives><name xml:lang="en"><surname>Trushnikova</surname><given-names>Tatiana N.</given-names></name><name xml:lang="ru"><surname>Трушникова</surname><given-names>Татьяна Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Associate Professor, Department of neurology and medical genetics,</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент каф. неврологии и медицинской генетики</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff18"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9912-1512</contrib-id><name-alternatives><name xml:lang="en"><surname>Zaslavsky</surname><given-names>Leonid G.</given-names></name><name xml:lang="ru"><surname>Заславский</surname><given-names>Леонид Григорьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Department of neurology</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор каф. неврологии</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff19"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2572-6970</contrib-id><name-alternatives><name xml:lang="en"><surname>Khabirov</surname><given-names>Farit A.</given-names></name><name xml:lang="ru"><surname>Хабиров</surname><given-names>Фарит Ахатович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Head, Department of neurology</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, зав. каф. неврологии</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff20"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9293-5932</contrib-id><name-alternatives><name xml:lang="en"><surname>Sivertseva</surname><given-names>Stella A.</given-names></name><name xml:lang="ru"><surname>Сиверцева</surname><given-names>Стелла Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Associate Professor, Director, Center for Autoimmune Diseases of the Nervous System and Multiple Sclerosis of the Tyumen region; Professor, Department of neurology and neurosurgery; Professor, Department of neurology, neurosurgery and neurorehabilitation</p></bio><bio xml:lang="ru"><p>д-р мед. наук, доцент, рук. центра аутоиммунных заболеваний нервной системы и рассеянного склероза; профессор каф. неврологии и нейрохирургии; профессор каф. неврологии, нейрохирургии и нейрореабилитации</p></bio><email>voroba.nat@mail.ru</email><xref ref-type="aff" rid="aff21"/><xref ref-type="aff" rid="aff22"/><xref ref-type="aff" rid="aff23"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6314-4218</contrib-id><name-alternatives><name xml:lang="en"><surname>Tolkacheva</surname><given-names>Daria G.</given-names></name><name xml:lang="ru"><surname>Толкачева</surname><given-names>Дарья Георгиевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>independent expert, Project Office's research projects</p></bio><bio xml:lang="ru"><p>независимый эксперт исследовательских проектов Проектного офиса</p></bio><email>simaniv@neurology.ru</email><xref ref-type="aff" rid="aff24"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2476-7666</contrib-id><name-alternatives><name xml:lang="en"><surname>Sapozhnikov</surname><given-names>Kirill V.</given-names></name><name xml:lang="ru"><surname>Сапожников</surname><given-names>Кирилл Викторович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), lecturer, Department of automation of medical service management (with military medical statistics)</p></bio><bio xml:lang="ru"><p>канд. мед. наук, преподаватель каф. автоматизации управления медицинской службой (с военно-медицинской статистикой)</p></bio><email>simaniv@neurology.ru</email><xref ref-type="aff" rid="aff25"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-5911-4192</contrib-id><name-alternatives><name xml:lang="en"><surname>Gorbunova</surname><given-names>Alexandra A.</given-names></name><name xml:lang="ru"><surname>Горбунова</surname><given-names>Александра Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>biostatistics</p></bio><bio xml:lang="ru"><p>биостатистик</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff26"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8138-6408</contrib-id><name-alternatives><name xml:lang="en"><surname>Krasnova</surname><given-names>Marina V.</given-names></name><name xml:lang="ru"><surname>Краснова</surname><given-names>Марина Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biol.), medical expert</p></bio><bio xml:lang="ru"><p>канд. биол. наук, медицинский эксперт</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff26"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5463-1022</contrib-id><name-alternatives><name xml:lang="en"><surname>Linkova</surname><given-names>Yulia N.</given-names></name><name xml:lang="ru"><surname>Линькова</surname><given-names>Юлия Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Deputy director general for clinical development and research</p></bio><bio xml:lang="ru"><p>канд. мед. наук, зам. генерального директора по клинической разработке и исследованиям</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff26"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8499-2232</contrib-id><name-alternatives><name xml:lang="en"><surname>Zinkina</surname><given-names>Arina V.</given-names></name><name xml:lang="ru"><surname>Зинкина</surname><given-names>Арина Валерьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Director, Clinical development department</p></bio><bio xml:lang="ru"><p>директор департамента клинической разработки</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff26"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1816-4014</contrib-id><name-alternatives><name xml:lang="en"><surname>Porozova</surname><given-names>Anastasiya A.</given-names></name><name xml:lang="ru"><surname>Порозова</surname><given-names>Анастасия Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>medical expert</p></bio><bio xml:lang="ru"><p>медицинский эксперт</p></bio><email>simaniv@mail.ru</email><xref ref-type="aff" rid="aff26"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal Center for Brain Research and Neurotechnologies</institution></aff><aff><institution xml:lang="ru">Федеральный центр мозга и нейротехнологий</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет имени Н.И. Пирогова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Russian Center of Neurology and Neurosciences</institution></aff><aff><institution xml:lang="ru">Российский центр неврологии и нейронаук</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Rostov State Medical University</institution></aff><aff><institution xml:lang="ru">Ростовский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Yaroslavl State Medical University</institution></aff><aff><institution xml:lang="ru">Ярославский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Pavlov First Saint Petersburg State Medical University</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="aff7"><aff><institution xml:lang="en">Bashkir State Medical University</institution></aff><aff><institution xml:lang="ru">Башкирский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff8"><aff><institution xml:lang="en">Ulyanovsk Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">Ульяновская областная клиническая больница</institution></aff></aff-alternatives><aff-alternatives id="aff9"><aff><institution xml:lang="en">Kirov Center of Cardiology and Neurology</institution></aff><aff><institution xml:lang="ru">Центр кардиологии и неврологии</institution></aff></aff-alternatives><aff-alternatives id="aff10"><aff><institution xml:lang="en">Novosibirsk State Medical University</institution></aff><aff><institution xml:lang="ru">Новосибирский государственный медицинский университет, Новосибирск</institution></aff></aff-alternatives><aff-alternatives id="aff11"><aff><institution xml:lang="en">Novosibirsk Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">Государственная Новосибирская областная клиническая больница</institution></aff></aff-alternatives><aff-alternatives id="aff12"><aff><institution xml:lang="en">Moscow Regional Research Institute named after V.F. Vladimirsky</institution></aff><aff><institution xml:lang="ru">Московский областной научно-исследовательский клинический институт имени М.Ф. Владимирского</institution></aff></aff-alternatives><aff-alternatives id="aff13"><aff><institution xml:lang="en">Privolzhsky Research Medical University</institution></aff><aff><institution xml:lang="ru">Приволжский исследовательский медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff14"><aff><institution xml:lang="en">Samara State Medical University</institution></aff><aff><institution xml:lang="ru">Самарский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff15"><aff><institution xml:lang="en">N.P. Bechtereva Institute of the Human Brain</institution></aff><aff><institution xml:lang="ru">Институт мозга человека имени Н.П. Бехтеревой Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff16"><aff><institution xml:lang="en">Altai State Medical University</institution></aff><aff><institution xml:lang="ru">Алтайский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff17"><aff><institution xml:lang="en">City Clinical Hospital No. 1</institution></aff><aff><institution xml:lang="ru">Городская клиническая больница № 1 г. Челябинск</institution></aff></aff-alternatives><aff-alternatives id="aff18"><aff><institution xml:lang="en">E.A. Vagner Perm State Medical University</institution></aff><aff><institution xml:lang="ru">Пермский государственный медицинский университет имени академика Е.А.
Вагнера</institution></aff></aff-alternatives><aff-alternatives id="aff19"><aff><institution xml:lang="en">I.P. Pavlov First Saint Petersburg State Medical University</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="aff20"><aff><institution xml:lang="en">Kazan State Medical Academy — Branch of the Russian Medical Academy of Continuous Professional Education</institution></aff><aff><institution xml:lang="ru">Казанская государственная медицинская академия — филиал Российской медицинской академии непрерывного профессионального образования</institution></aff></aff-alternatives><aff-alternatives id="aff21"><aff><institution xml:lang="en">Medical Sanitary Unit “Neftyanik”</institution></aff><aff><institution xml:lang="ru">АО «Медико-санитарная часть «Нефтяник»</institution></aff></aff-alternatives><aff-alternatives id="aff22"><aff><institution xml:lang="en">Ural State Medical University</institution></aff><aff><institution xml:lang="ru">Уральский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff23"><aff><institution xml:lang="en">Kirov State Medical University</institution></aff><aff><institution xml:lang="ru">Кировский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff24"><aff><institution xml:lang="en">The Northwestern Institute of Management — Branch of the Russian Presidential Academy of National Economy and Public Administration</institution></aff><aff><institution xml:lang="ru">Северо-Западный институт управления — филиал Российской академии народного хозяйства и государственной службы при Президенте Российской Федерации</institution></aff></aff-alternatives><aff-alternatives id="aff25"><aff><institution xml:lang="en">S.M. Kirov Military Medical Academy</institution></aff><aff><institution xml:lang="ru">Военно-медицинская академия имени С.М. Кирова</institution></aff></aff-alternatives><aff-alternatives id="aff26"><aff><institution xml:lang="en">JSC BIOCAD</institution></aff><aff><institution xml:lang="ru">АО «Биокад»</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-06-17" publication-format="electronic"><day>17</day><month>06</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2026</year></pub-date><volume>20</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>26</fpage><lpage>35</lpage><history><date date-type="received" iso-8601-date="2026-04-11"><day>11</day><month>04</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-05-15"><day>15</day><month>05</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Boyko A.N., Zakharova M.N., Simaniv T.O., Goncharova Z.A., Spirin N.N., Totolyan N.A., Bakhtiyarova K.Z., Greshnova I.V., Dudin V.A., Korobko D.S., Kotov S.V., Parshina E.V., Poverennova I.E., Lebedev V.M., Smagina I.V., Khairutdinova D.F., Trushnikova T.N., Zaslavsky L.G., Khabirov F.A., Sivertseva S.A., Tolkacheva D.G., Sapozhnikov K.V., Gorbunova A.A., Krasnova M.V., Linkova Y.N., Zinkina A.V., Porozova A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Бойко А.Н., Захарова М.Н., Симанив Т.О., Гончарова З.А., Спирин Н.Н., Тотолян Н.А., Бахтиярова К.З., Грешнова И.В., Дудин В.А., Коробко Д.С., Котов С.В., Паршина Е.В., Повереннова И.Е., Лебедев В.М., Смагина И.В., Хайрутдинова Д.Ф., Трушникова Т.Н., Заславский Л.Г., Хабиров Ф.А., Сиверцева С.А., Толкачева Д.Г., Сапожников К.В., Горбунова А.А., Краснова М.В., Линькова Ю.Н., Зинкина А.В., Порозова А.А.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Boyko A.N., Zakharova M.N., Simaniv T.O., Goncharova Z.A., Spirin N.N., Totolyan N.A., Bakhtiyarova K.Z., Greshnova I.V., Dudin V.A., Korobko D.S., Kotov S.V., Parshina E.V., Poverennova I.E., Lebedev V.M., Smagina I.V., Khairutdinova D.F., Trushnikova T.N., Zaslavsky L.G., Khabirov F.A., Sivertseva S.A., Tolkacheva D.G., Sapozhnikov K.V., Gorbunova A.A., Krasnova M.V., Linkova Y.N., Zinkina A.V., Porozova A.A.</copyright-holder><copyright-holder xml:lang="ru">Бойко А.Н., Захарова М.Н., Симанив Т.О., Гончарова З.А., Спирин Н.Н., Тотолян Н.А., Бахтиярова К.З., Грешнова И.В., Дудин В.А., Коробко Д.С., Котов С.В., Паршина Е.В., Повереннова И.Е., Лебедев В.М., Смагина И.В., Хайрутдинова Д.Ф., Трушникова Т.Н., Заславский Л.Г., Хабиров Ф.А., Сиверцева С.А., Толкачева Д.Г., Сапожников К.В., Горбунова А.А., Краснова М.В., Линькова Ю.Н., Зинкина А.В., Порозова А.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/1512">https://annaly-nevrologii.com/pathID/article/view/1512</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>Divozilimab, a humanized, afucosylated monoclonal antibody that targets CD20, has been approved to treat multiple sclerosis, neuromyelitis optica spectrum disorders (NMOSD), and systemic sclerosis. The AQUARELLE clinical trial evaluates the efficacy and safety of divozilimab in patients with NMOSD.</p> <p><bold>Aim. </bold>The study aimed to evaluate the efficacy and safety of divozilimab during the first year of treatment in patients with NMOSD.</p> <p><bold>Materials and methods.</bold> The AQUARELLE open-label clinical trial enrolled 105 patients with NMOSD. All patients received 500 mg of divozilimab via intravenous infusion every 24 weeks. After 1 year of treatment, the following key parameters were evaluated: the annualized relapse rate (ARR), time to first relapse compared to a historical control group (the placebo group from the SakuraStar study), the proportion of patients with confirmed disability worsening (CDW), changes in Expanded Disability Status Scale (EDSS) scores, and safety parameters.</p> <p><bold>Results.</bold> The ARR in patients with NMOSD who received divozilimab for one year was 0.104 (95% confidence interval [CI], 0.056–0.193), and 90.5% of patients had no confirmed relapses. The calculated weighted ratio of ARR (90% CI) for divozilimab to the historical placebo (SAkuraStar) was 0.237 (90% CI: 0.084–0.672), demonstrating superiority of divozilimab. The EDSS score remained stable, and no cases of CDW were reported. Adverse events (AEs) were observed in 76% of patients, most of which were mild or moderate in severity. The most common adverse drug reactions were lymphopenia (21%), leukopenia (11.4%), neutropenia (12.4%), and infusion-related reactions (5.7%). No serious adverse reactions were reported.</p> <p><bold>Conclusion. </bold>The 1-year interim results of divozilimab therapy in patients with NMOSD from the AQUARELLE clinical trial demonstrate the sustained efficacy of therapy in reducing both the rate and risk of NMOSD relapses. Additionally, the safety profile was consistent with that expected for anti-B-cell therapy.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Дивозилимаб представляет собой гуманизированное афукозилированное моноклональное антитело к CD20, одобренное для применения при рассеянном склерозе, заболеваниях спектра оптиконевромиелита (ЗСОНМ) и системной склеродермии. В клиническом исследовании (КИ) AQUARELLE изучаются эффективность и безопасность применения дивозилимаба при ЗСОНМ.</p> <p><bold>Цель </bold>— оценить эффективность и безопасность препарата дивозилимаб в течение 1-го года терапии у пациентов с ЗСОНМ.</p> <p><bold>Материалы и методы.</bold> В открытое КИ AQUARELLE включены 105 пациентов с ЗСОНМ. Всем пациентам проводилась терапия дивозилимабом в виде внутривенных инфузий в режиме дозирования 500 мг каждые 24 нед. Через 1 год от начала терапии дивозилимабом проанализированы следующие ключевые показатели: среднегодовая частота обострений (СЧО) и время до первого обострения в сравнении с историческим контролем, в качестве которого была использована группа плацебо из исследования SAkuraStar; доля пациентов с подтверждённым усилением инвалидизации, динамика по шкале Expanded Disability Status Scale (EDSS), параметры безопасности.</p> <p><bold>Результаты.</bold> СЧО у пациентов с ЗСОНМ, получавших дивозилимаб в течение года, составила 0,104 (95% ДИ 0,056–0,193), у 90,5% пациентов не зарегистрировано подтверждённых обострений. Рассчитанное после взвешивания отношение СЧО (90% ДИ) дивозилимаб/историческое плацебо (SAkuraStar) составило 0,237 (90% ДИ 0,084–0,672), что свидетельствует о превосходстве дивозилимаба. Балл по шкале EDSS оставался стабильным, случаев подтверждённого усиления инвалидизации не зарегистрировано. Нежелательные явления наблюдались у 76% пациентов, но были в основном лёгкой или умеренной степени тяжести. Наиболее частыми нежелательными реакциями были лимфопения (21,0%), лейкопения (11,4%), нейтропения (12,4%) и инфузионные реакции (5,7%), серьёзных нежелательных лекарственных реакций не зафиксировано.</p> <p><bold>Заключение. </bold>Результаты анализа 1 года терапии дивозилимабом пациентов с ЗСОНМ в КИ AQUARELLE свидетельствуют в пользу сохранения эффективности дивозилимаба в отношении снижения частоты и риска обострений ЗСОНМ, при этом профиль безопасности соответствовал характерному для анти-В-клеточной терапии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>neuromyelitis optica spectrum disorders</kwd><kwd>relapse-preventing therapy</kwd><kwd>monoclonal antibody</kwd><kwd>anti-B-cell therapy</kwd><kwd>divozilimab</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>заболевания спектра оптиконевромиелита</kwd><kwd>препараты, предотвращающие обострения</kwd><kwd>моноклональные антитела</kwd><kwd>анти-В-клеточная терапия</kwd><kwd>дивозилимаб</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">AO "Биокад"</institution></institution-wrap><institution-wrap><institution xml:lang="en">JSC Biocad</institution></institution-wrap></funding-source></award-group><funding-statement xml:lang="en">The study was funded by JSC BIOCAD.</funding-statement><funding-statement xml:lang="ru">Финансирование исследования осуществлялось АО «БИОКАД».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Jarius S, Wildemann B, Paul F. 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