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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">Terapevticheskii arkhiv</journal-id><journal-title-group><journal-title xml:lang="en">Terapevticheskii arkhiv</journal-title><trans-title-group xml:lang="ru"><trans-title>Терапевтический архив</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0040-3660</issn><issn publication-format="electronic">2309-5342</issn><publisher><publisher-name xml:lang="en">LLC Obyedinennaya Redaktsiya</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">696567</article-id><article-id pub-id-type="doi">10.26442/00403660.2025.12.203550</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">Safety, tolerability, and pharmacokinetics of verenafusp alfa in healthy volunteers: results of an open-label multicohort phase I study</article-title><trans-title-group xml:lang="ru"><trans-title>Оценка безопасности, переносимости и фармакокинетики веренафуспа альфа у здоровых добровольцев: результаты открытого мультикогортного исследования I фазы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2615-7167</contrib-id><name-alternatives><name xml:lang="en"><surname>Smolyarchuk</surname><given-names>Elena A.</given-names></name><name xml:lang="ru"><surname>Смолярчук</surname><given-names>Елена Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, доц., зав. каф. фармакологии Института фармации им. А.П. Нелюбина</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8526-7147</contrib-id><name-alternatives><name xml:lang="en"><surname>Sologova</surname><given-names>Susanna S.</given-names></name><name xml:lang="ru"><surname>Сологова</surname><given-names>Сусанна Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. биол. наук, доц., зав. учебной частью каф. фармакологии Института фармации им. А.П. Нелюбина</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-2969-5408</contrib-id><name-alternatives><name xml:lang="en"><surname>Bushmanova</surname><given-names>Anna V.</given-names></name><name xml:lang="ru"><surname>Бушманова</surname><given-names>Анна Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>врач-терапевт, врач – клинический фармаколог</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-6479-5734</contrib-id><name-alternatives><name xml:lang="en"><surname>Asadova</surname><given-names>Giunai Z.</given-names></name><name xml:lang="ru"><surname>Асадова</surname><given-names>Гюнай Закировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>гл. специалист по проведению клинических исследований</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-9707-2623</contrib-id><name-alternatives><name xml:lang="en"><surname>Savostina</surname><given-names>Irina D.</given-names></name><name xml:lang="ru"><surname>Савостина</surname><given-names>Ирина Денисовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>вед. специалист по проведению клинических исследований</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1314-894X</contrib-id><name-alternatives><name xml:lang="en"><surname>Khamitov</surname><given-names>Ravil A.</given-names></name><name xml:lang="ru"><surname>Хамитов</surname><given-names>Равиль Авгатович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>д-р мед. наук, проф., вице-президент по исследованиям и разработкам</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6532-7835</contrib-id><name-alternatives><name xml:lang="en"><surname>Shukurov</surname><given-names>Rahim R.</given-names></name><name xml:lang="ru"><surname>Шукуров</surname><given-names>Рахим Рахманкулыевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. биол. наук, дир. дирекции фармацевтического анализа</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9058-1106</contrib-id><name-alternatives><name xml:lang="en"><surname>Lyagoskin</surname><given-names>Ivan S.</given-names></name><name xml:lang="ru"><surname>Лягоскин</surname><given-names>Иван Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. биол. наук, нач. отд. биоаналитических методов, дир. дирекции фармацевтического анализа</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1179-3881</contrib-id><name-alternatives><name xml:lang="en"><surname>Markova</surname><given-names>Oksana A.</given-names></name><name xml:lang="ru"><surname>Маркова</surname><given-names>Оксана Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>дир. департамента научной экспертизы и фармаконадзора дирекции по клиническим исследованиям и фармаконадзору</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4863-8471</contrib-id><name-alternatives><name xml:lang="en"><surname>Borozinets</surname><given-names>Anton Yu.</given-names></name><name xml:lang="ru"><surname>Борозинец</surname><given-names>Антон Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>канд. мед. наук, ст. мед. советник департамента маркетинга и продвижения препаратов онкогематологического направления</p></bio><email>a.borozinets@generium.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Sechenov First Moscow State Medical University (Sechenov University)</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Первый Московский государственный медицинский университет им. И.М. Сеченова» Минздрава России (Сеченовский Университет)</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">GENERIUM JSC</institution></aff><aff><institution xml:lang="ru">АО «ГЕНЕРИУМ»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-02-14" publication-format="electronic"><day>14</day><month>02</month><year>2026</year></pub-date><volume>97</volume><issue>12</issue><issue-title xml:lang="en">Vario (various)</issue-title><issue-title xml:lang="ru">Vario (разное)</issue-title><fpage>1009</fpage><lpage>1017</lpage><history><date date-type="received" iso-8601-date="2025-11-19"><day>19</day><month>11</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-12-27"><day>27</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</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-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ter-arkhiv.ru/0040-3660/article/view/696567">https://ter-arkhiv.ru/0040-3660/article/view/696567</self-uri><abstract xml:lang="en"><p><bold>Background. </bold>Enzyme replacement drugs for treatment of mucopolysaccharidosis type II (MPS II) do not penetrate the blood-brain barrier, significantly reducing their efficacy in patients with neuropathic form. Verenafusp alfa (Clotilia<sup>®</sup>) is a recombinant fusion protein of iduronate-2-sulfatase and a monoclonal antibody Fab fragment to human insulin receptor for distribution of the enzyme into brain.</p> <p><bold>Aim. </bold>To evaluate safety, tolerability, and pharmacokinetic parameters of verenafusp alfa after single intravenous administration of escalating doses in healthy volunteers.</p> <p><bold>Materials and methods. </bold>This open-label, multicohort study included 20 healthy male volunteers aged 18 to 47 years (26.1±7.8 years). Verenafusp alfa was administered intravenously for 3 hours at single doses of 0.3 mg/kg (<italic>n</italic>=1), 0.5 mg/kg (<italic>n</italic>=1), 1 mg/kg (<italic>n</italic>=6), 2 mg/kg (<italic>n</italic>=6), and 3 mg/kg (<italic>n</italic>=6). Safety was assessed based on the incidence of clinical and laboratory adverse events (AEs) and their relationship to the investigational medicinal product. Pharmacokinetic parameters were calculated using a noncompartmental method.</p> <p><bold>Results. </bold>All 20 volunteers completed the study. AEs reported in 6 (30%) volunteers were mild in severity and related to changes in individual laboratory and instrumental test data. One AE (increased bilirubin level) was possibly related to the study drug. Pharmacokinetic analysis demonstrated a dose-dependent increase in maximum concentration (C<sub>max</sub>) from 197.60 (0.3 mg/kg) to 10,225.80 ng/mL (3 mg/kg) and area under the concentration-time curve (AUC) from 38,678.60 to 2,714,067.42 ng×min/mL respectively. The half-life ranged from 86.69 to 213.42 minutes, and clearance lowered with the increasing dose from 7.67 to 1.11 mL/min/kg.</p> <p><bold>Conclusion. </bold>Single intravenous administration of verenafusp alfa at doses ranging from 0.3 to 3 mg/kg demonstrated a favorable safety profile and good tolerability in healthy volunteers. The drug's pharmacokinetics was nonlinear, with a dose-dependent increase in C<sub>max</sub> and AUC with the dose increment. Volume of distribution volume lowered with increase of the dose.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Используемые ферментные препараты для лечения мукополисахаридоза II типа не способны проникать через гематоэнцефалический барьер, что существенно снижает их терапевтическую эффективность при нейропатической форме заболевания. Веренафусп альфа (Клотилия<sup>®</sup>) представляет собой рекомбинантный гибридный белок, состоящий из идуронат-2-сульфатазы и Fab-фрагмента моноклонального антитела к инсулиновому рецептору человека, способный проникать через гематоэнцефалический барьер.</p> <p><bold>Цель. </bold>Оценить безопасность, переносимость и фармакокинетические параметры веренафуспа альфа при однократном внутривенном введении в возрастающих дозах у здоровых добровольцев.</p> <p><bold>Материалы и методы. </bold>В открытое мультикогортное исследование включены 20 здоровых мужчин-добровольцев в возрасте 18–47 лет (26,1±7,8 года). Веренафусп альфа вводили однократно внутривенно в течение 3 ч в дозах 0,3 мг/кг (<italic>n</italic>=1), 0,5 мг/кг (<italic>n</italic>=1), 1 мг/кг (<italic>n</italic>=6), 2 мг/кг (<italic>n</italic>=6), 3 мг/кг (<italic>n</italic>=6). Безопасность оценивали по частоте клинических и лабораторных нежелательных явлений (НЯ) и их связи с исследуемым препаратом. Фармакокинетические параметры рассчитывали некомпартментным методом.</p> <p><bold>Результаты. </bold>Все 20 добровольцев полностью завершили исследование. Зарегистрированные у 6 (30%) человек НЯ были легкой степени тяжести и относились к изменениям индивидуальных данных лабораторных и инструментальных исследований. Одно НЯ (повышение уровня билирубина) имело возможную связь с исследуемым препаратом. Фармакокинетический анализ продемонстрировал дозозависимое увеличение максимальной концентрации от 197,60 (0,3 мг/кг) до 10 225,80 нг/мл (3 мг/кг) и площади под кривой «концентрация–время» от 38 678,60 до 2 714 067,42 нг×мин/мл соответственно. Период полувыведения составил от 86,69 до 213,42 мин, клиренс снижался с увеличением дозы от 7,67 до 1,11 мл/мин/кг.</p> <p><bold>Заключение. </bold>Однократное внутривенное введение веренафуспа альфа в дозах 0,3–3 мг/кг продемонстрировало благоприятный профиль безопасности и хорошую переносимость у здоровых добровольцев. Фармакокинетика препарата была нелинейной и характеризовалась уменьшением объема распределения и непропорциональным увеличением максимальной концентрации и площади под кривой «концентрация–время» с возрастанием дозы.</p></trans-abstract><kwd-group xml:lang="en"><kwd>mucopolysaccharidosis type II</kwd><kwd>enzyme replacement therapy</kwd><kwd>iduronate-2-sulfatase</kwd><kwd>verenafusp alfa</kwd><kwd>HIR-Fab-IDS</kwd><kwd>GNR-055</kwd><kwd>pharmacokinetics</kwd><kwd>safety</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>мукополисахаридоз II типа</kwd><kwd>ферментная заместительная терапия</kwd><kwd>идуронат-2-сульфатаза</kwd><kwd>веренафусп альфа</kwd><kwd>HIR-Fab-IDS</kwd><kwd>GNR-055</kwd><kwd>фармакокинетика</kwd><kwd>безопасность</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Muenzer J, Botha J, Amartino H, et al. 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