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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vedomostiregmed</journal-id><journal-title-group><journal-title xml:lang="ru">Регуляторные исследования и экспертиза лекарственных средств</journal-title><trans-title-group xml:lang="en"><trans-title>Regulatory Research and Medicine Evaluation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">3034-3062</issn><issn pub-type="epub">3034-3453</issn><publisher><publisher-name>Federal State Budgetary Institution ‘Scientific Centre for Expert Evaluation of Medicinal Products’ of the Ministry of Health of the Russian Federation (FSBI ‘SCEEMP’)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30895/1991-2919-2025-15-3-330-346</article-id><article-id custom-type="elpub" pub-id-type="custom">vedomostiregmed-759</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="ru"><subject>РАЗРАБОТКА И ВАЛИДАЦИЯ МЕТОДИК</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DEVELOPMENT AND VALIDATION OF RESEARCH METHODS</subject></subj-group></article-categories><title-group><article-title>Моноклональные антитела: разработка платформенных методик оценки примесей высокомолекулярных и низкомолекулярных соединений</article-title><trans-title-group xml:lang="en"><trans-title>Monoclonal antibodies: Development of universal (platform) methods for the assessment of high and low-molecular weight impurities</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2904-7382</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ваганова</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vaganova</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ваганова Ольга Александровна, канд. фарм. наук </p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Olga A. Vaganova, Cand. Sci. (Pharm.)</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</p></bio><email xlink:type="simple">vaganova@expmed.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8593-1944</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнов</surname><given-names>Р. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>R. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смирнов Роман Сергеевич, канд. хим. наук</p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Roman S. Smirnov, Cand. Sci. (Chem.)</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</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/0009-0006-9808-5760</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ленин</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lenin</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ленин Сергей Андреевич </p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Sergei A. Lenin</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</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/0009-0006-6074-3318</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фунташев</surname><given-names>К. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Funtashev</surname><given-names>K. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фунташев Кирилл Сергеевич </p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Kirill S. Funtashev</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</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/0000-0001-5588-5801</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костромских</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostromskih</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Костромских Анастасия Андреевна, канд. хим. наук </p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Anastasia A. Kostromskih, Cand. Sci. (Chem.)</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</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/0000-0001-8187-1008</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Перегудова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Peregudova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Перегудова Александра Сергеевна </p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Aleksandra S. Peregudova</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</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/0009-0007-9087-0630</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кадыкова</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kadykova</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кадыкова Дарья Алексеевна </p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Darya A. Kadykova</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</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/0000-0003-4891-973X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Меркулов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Merkulov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Меркулов Вадим Анатольевич, д-р мед. наук, проф.</p><p>Петровский б-р, д. 8, стр. 2, Москва, 127051, Российская Федерация</p></bio><bio xml:lang="en"><p>Vadim A. Merkulov, Dr. Sci. (Med.), Professor</p><p>8/2 Petrovsky Blvd, Moscow 127051, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение «Научный центр экспертизы средств медицинского применения» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Scientific Centre for Expert Evaluation of Medicinal Products</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2025</year></pub-date><volume>15</volume><issue>3</issue><fpage>330</fpage><lpage>346</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ваганова О.А., Смирнов Р.С., Ленин С.А., Фунташев К.С., Костромских А.А., Перегудова А.С., Кадыкова Д.А., Меркулов В.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ваганова О.А., Смирнов Р.С., Ленин С.А., Фунташев К.С., Костромских А.А., Перегудова А.С., Кадыкова Д.А., Меркулов В.А.</copyright-holder><copyright-holder xml:lang="en">Vaganova O.A., Smirnov R.S., Lenin S.A., Funtashev K.S., Kostromskih A.A., Peregudova A.S., Kadykova D.A., Merkulov V.A.</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://www.vedomostincesmp.ru/jour/article/view/759">https://www.vedomostincesmp.ru/jour/article/view/759</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ. Разработка унифицированных методик контроля качества лекарственных средств на основе моноклональных антител (МАТ) является одной из задач стандартизации МАТ.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Разработка и анализ возможности применения платформенных (универсальных) методик для оценки содержания примесей высокомолекулярных соединений и фрагментов, негликозилированных молекул в различных МАТ методами эксклюзионной высокоэффективной жидкостной хроматографии и капиллярного электрофореза.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. Лекарственные препараты, содержащие МАТ, 28 различных международных непатентованных наименований российского и иностранного производства. Исследования методом эксклюзионной высокоэффективной жидкостной хроматографии (ЭХ) проводили на приборах Agilent Technologies серии 1200, оснащенных детекторами поглощения в УФ-области. Обработку и анализ хроматограмм осуществляли с помощью программного обеспечения OpenLab. Капиллярный гель-электрофорез (КГЭ) проводили в восстанавливающих и невосстанавливающих условиях с использованием системы PA 800 plus (Beckman Coulter), оснащенной диодно-матричным детектором с поглощением в УФ-области и программным обеспечением Beckman 32Karat.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Подобраны универсальные условия пробоподготовки, хроматографического и электрофоретического разделения и определения содержания целевых соединений в препаратах МАТ, методики апробированы на 28 МАТ. Для каждого МАТ определены времена удерживания и времена миграции пиков целевых соединений. Проведено сравнение данных, полученных по разработанным методикам и по оригинальным методикам производителей МАТ. Проведена валидация методик определения содержания в образцах МАТ высокомолекулярных соединений методом ЭХ, фрагментов МАТ и негликозилированных молекул тяжелых цепей МАТ в восстанавливающих и невосстанавливающих условиях методом КГЭ. Правильность, воспроизводимость и чувствительность методик соответствуют установленным требованиям. Полученные результаты оценки валидационных </p><p>характеристик методики ЭХ: прецизионность (RSD) площадей пиков составила для мономера не более 0,4%, для групп агрегатов до 8%, для общей площади пиков не более 0,4%, для относительной площади пика, соответствующего мономеру, — 0,02%. Линейность методики подтверждена в диапазоне концентраций 0,5–120%, правильность — в линейном диапазоне 99,1–102,1%, предел количественного определения (ПКО) — 0,1%. Валидационные характеристики методики КГЭ: прецизионность не более 1% для содержания основного пика иммуноглобулина или суммы пиков тяжелых и легких цепей и не более 1% для абсолютных времен миграции основных пиков. Линейность методик подтверждена в диапазоне концентраций от ПКО до 300%. Правильность для обеих методик составила 97,6–103,7%, ПКО — 0,5 и 0,75% соответственно.</p></sec><sec><title>ВЫВОДЫ</title><p>ВЫВОДЫ. Разработанные методики оценки чистоты препаратов МАТ являются универсальными для неконъюгированных МАТ; по валидационным характеристикам специфичности, прецизионности, предела количественного определения, аналитической области, линейности, правильности соответствуют установленным критериям приемлемости и могут применяться на любом этапе жизненного цикла препаратов указанной группы.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION. The development of unified techniques for quality control monoclonal antibodies (mAb) is one of the challenges for mAbs quality standardization.</p></sec><sec><title>AIM</title><p>AIM. This study aimed to develop and analyse the possibility of using platform (universal) techniques for estimating the impurity content of high molecular weight compounds and fragments, non-glycosylated molecules in various mAbs by methods of size-exclusion high performance liquid chromatography (SE-HPLC) and capillary electrophoresis methods.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS. MAbs-containing medicinal products from 28 different international nonproprietary names of Russian and foreign origin. Studies by SE-HPLC were carried out on Agilent Technologies 1200 series instruments equipped with UV detectors, with data processed via OpenLab software. Capillary gel electrophoresis (CGE) was conducted under both reducing and non-reducing conditions using a PA 800 plus system (Beckman Coulter) with UV diode array detection, and Beckman 32Karat software.</p></sec><sec><title>RESULTS</title><p>RESULTS. Universal sample preparation protocols and separation conditions were established and validated across 28 mAbs. Retention times and relative migration times of target compounds peaks were determined for each mAb. Comparative analysis demonstrated concordance between platform methods and manufacturers' proprietary methods. Validation of methods for determination of the content of high-molecular weight compounds in mAbs samples by the SE-HPLC method, fragments of mAbs and non-glycosylated variants of heavy chains of mAbs under reducing and non-reducing conditions by the CGE method was performed. The accuracy, precision, and sensitivity of the methods met the established requirements. The validation characteristics obtained for the SE-HPLC method were as follows: precision (RSD) of peak areas was no more than 0.4% for the monomer, up to 8% for aggregate groups, no more than 0.4% for total peak areas, and 0.02% for the relative peak area corresponding to the monomer. The method's linearity was confirmed within the concentration range of 0.5–120%, accuracy within 99.1–102.1%, and the limit of quantification (LOQ) was 0.1%. For the CGE method, the validation characteristics showed precision of no more than 1% for intact immunoglobulin content or heavy and light chain peaks, and no more than 1% for absolute migration times of main peaks. Linearity was confirmed from LOQ to 300% concentration range. The accuracy for both methods ranged from 97.6–103.7%, with LOQ values of 0.5% and 0.75%, respectively.</p></sec><sec><title>CONCLUSIONS</title><p>CONCLUSIONS. The developed methods for assessing the purity are universal for unconjugated mAbs products. Their validation characteristics — including specificity, precision, limit of quantification, analytical range, linearity, and accuracy — meet all established acceptance criteria. These methods can be reliably implemented at any stage of the product lifecycle for this category of medicinal products.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>моноклональное антитело</kwd><kwd>капиллярный электрофорез</kwd><kwd>эксклюзионная хроматография</kwd><kwd>качество лекарственных средств</kwd><kwd>нормативный документ</kwd><kwd>высокоэффективная жидкостная хроматография</kwd><kwd>платформенная методика</kwd><kwd>универсальная методика</kwd><kwd>валидация</kwd><kwd>чистота</kwd></kwd-group><kwd-group xml:lang="en"><kwd>monoclonal antibody</kwd><kwd>МАВ</kwd><kwd>capillary electrophoresis</kwd><kwd>size exclusion chromatography</kwd><kwd>quality of medicines</kwd><kwd>normative document</kwd><kwd>high performance liquid chromatography</kwd><kwd>platform technique</kwd><kwd>universal technique</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания ФГБУ «НЦЭСМП» Минздрава России № 056-00001-25-00 на проведение прикладных научных исследований (номер государственного учета НИР № 124022200093-9).</funding-statement><funding-statement xml:lang="en">This study was conducted by the Scientific Centre for Expert Evaluation of Medicinal Products as part of the applied research funded under State Assignment No. 056-00001-25-00 (R&amp;D Registry No. 124022200093-9).</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">Lu RM, Hwang YC, Liu IJ, Lee CC, Tsai HZ, Li HJ, et al. Development of therapeutic antibodies for the treatment of diseases. J Biomed Sci. 2020;27(1):1. https://doi.org/10.1186/s12929-019-0592-z</mixed-citation><mixed-citation xml:lang="en">Lu RM, Hwang YC, Liu IJ, Lee CC, Tsai HZ, Li HJ, et al. Development of therapeutic antibodies for the treatment of diseases. J Biomed Sci. 2020;27(1):1. https://doi.org/10.1186/s12929-019-0592-z</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Carrara SC, Ulitzka M, Grzeschik J, Kornmann H, Hock B, Kolmar H. From cell line development to the formulated drug product: The art of manufacturing therapeutic monoclonal antibodies. Int J Pharm. 2021;594:120164. https://doi.org/10.1016/j.ijpharm.2020.120164</mixed-citation><mixed-citation xml:lang="en">Carrara SC, Ulitzka M, Grzeschik J, Kornmann H, Hock B, Kolmar H. From cell line development to the formulated drug product: The art of manufacturing therapeutic monoclonal antibodies. Int J Pharm. 2021;594:120164. https://doi.org/10.1016/j.ijpharm.2020.120164</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Mou X, Yang X, Li H, Ambrogelly A, Pollard D. A high throughput ultra performance size exclusion chromatography assay for the analysis of aggregates and fragments of monoclonal antibodies. Pharm Bioprocess. 2014;2(2):141–56.</mixed-citation><mixed-citation xml:lang="en">Mou X, Yang X, Li H, Ambrogelly A, Pollard D. A high throughput ultra performance size exclusion chromatography assay for the analysis of aggregates and fragments of monoclonal antibodies. Pharm Bioprocess. 2014;2(2):141–56.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Hernández-Jiménez J, Martínez-Ortega A, Salmerón-García A, Cabeza J, Prados JC, Ortíz R, et al. Study of aggregation in therapeutic monoclonal antibodies subjected to stress and long-term stability tests by analyzing size exclusion liquid chromatographic profiles. Int J Biol Macromol. 2018;118(A):511–24. https://doi.org/10.1016/j.ijbiomac.2018.06.105</mixed-citation><mixed-citation xml:lang="en">Hernández-Jiménez J, Martínez-Ortega A, Salmerón-García A, Cabeza J, Prados JC, Ortíz R, et al. Study of aggregation in therapeutic monoclonal antibodies subjected to stress and long-term stability tests by analyzing size exclusion liquid chromatographic profiles. Int J Biol Macromol. 2018;118(A):511–24. https://doi.org/10.1016/j.ijbiomac.2018.06.105</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Kumar R, Guttman A, Rathore AS. Applications of capillary electrophoresis for biopharmaceutical product characterization. Electrophoresis. 2022;43(1–2):143–66. https://doi.org/10.1002/elps.202100182</mixed-citation><mixed-citation xml:lang="en">Kumar R, Guttman A, Rathore AS. Applications of capillary electrophoresis for biopharmaceutical product characterization. Electrophoresis. 2022;43(1–2):143–66. https://doi.org/10.1002/elps.202100182</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang J, Burman S, Gunturi S, Foley JP. Method development and validation of capillary sodium dodecyl sulfate gel electrophoresis for the characterization of a monoclonal antibody. J Pharm Biomed Anal. 2010;53(5):1236–43. https://doi.org/10.1016/j.jpba.2010.07.029</mixed-citation><mixed-citation xml:lang="en">Zhang J, Burman S, Gunturi S, Foley JP. Method development and validation of capillary sodium dodecyl sulfate gel electrophoresis for the characterization of a monoclonal antibody. J Pharm Biomed Anal. 2010;53(5):1236–43. https://doi.org/10.1016/j.jpba.2010.07.029</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Kaur H, Beckman J, Zhang Y, Jian Li Z, Szigeti M, Guttman A. Capillary electrophoresis and the biopharmaceutical industry: Therapeutic protein analysis and characterization. TrAC Trend Anal Chem. 2021;144:116407. https://doi.org/10.1016/j.trac.2021.116407</mixed-citation><mixed-citation xml:lang="en">Kaur H, Beckman J, Zhang Y, Jian Li Z, Szigeti M, Guttman A. Capillary electrophoresis and the biopharmaceutical industry: Therapeutic protein analysis and characterization. TrAC Trend Anal Chem. 2021;144:116407. https://doi.org/10.1016/j.trac.2021.116407</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Szabo M, Sarkozy D, Szigeti M, Farsang R, Kardos Z, Kozma A, et al. Introduction of a capillary gel electrophoresis-based workflow for biotherapeutics characterization: Size, charge, and N-Glycosylation variant analysis of bamlanivimab, an anti-SARS-CoV-2 product. Front Bioeng Biotechnol. 2022;10:839374. https://doi.org/10.3389/fbioe.2022.839374</mixed-citation><mixed-citation xml:lang="en">Szabo M, Sarkozy D, Szigeti M, Farsang R, Kardos Z, Kozma A, et al. Introduction of a capillary gel electrophoresis-based workflow for biotherapeutics characterization: Size, charge, and N-Glycosylation variant analysis of bamlanivimab, an anti-SARS-CoV-2 product. Front Bioeng Biotechnol. 2022;10:839374. https://doi.org/10.3389/fbioe.2022.839374</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Rauniyar N. Characterization of product related variants in therapeutic monoclonal antibodies. LCGC Int. 2024;1(6). https://doi.org/10.56530/lcgc.int.ap3874j8</mixed-citation><mixed-citation xml:lang="en">Rauniyar N. Characterization of product related variants in therapeutic monoclonal antibodies. LCGC Int. 2024;1(6). https://doi.org/10.56530/lcgc.int.ap3874j8</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Dadouch M, Ladner Y, Perrin C. Analysis of monoclonal antibodies by capillary electrophoresis: Sample preparation, separation and detection. Separations. 2021;8(1):4. https://doi.org/10.3390/separations8010004</mixed-citation><mixed-citation xml:lang="en">Dadouch M, Ladner Y, Perrin C. Analysis of monoclonal antibodies by capillary electrophoresis: Sample preparation, separation and detection. Separations. 2021;8(1):4. https://doi.org/10.3390/separations8010004</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Li M, Yu C, Wang W, Wu G, Wang L. Interlaboratory method validation of capillary electrophoresis sodium dodecyl sulfate (CE-SDS) methodology for analysis of mAbs. Electrophoresis. 2021;42(19):1900–13. https://doi.org/10.1002/elps.202170122</mixed-citation><mixed-citation xml:lang="en">Li M, Yu C, Wang W, Wu G, Wang L. Interlaboratory method validation of capillary electrophoresis sodium dodecyl sulfate (CE-SDS) methodology for analysis of mAbs. Electrophoresis. 2021;42(19):1900–13. https://doi.org/10.1002/elps.202170122</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Alhazmi HA, Albratty M. Analytical techniques for the characterization and quantification of monoclonal antibodies. Pharmaceuticals. 2023;16(2):291. https://doi.org/10.3390/ph16020291</mixed-citation><mixed-citation xml:lang="en">Alhazmi HA, Albratty M. Analytical techniques for the characterization and quantification of monoclonal antibodies. Pharmaceuticals. 2023;16(2):291. https://doi.org/10.3390/ph16020291</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>
