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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">pharmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Разработка и регистрация лекарственных средств</journal-title><trans-title-group xml:lang="en"><trans-title>Drug development &amp; registration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2305-2066</issn><issn pub-type="epub">2658-5049</issn><publisher><publisher-name>LLC «CPHA»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33380/2305-2066-2023-12-2-190-197</article-id><article-id custom-type="elpub" pub-id-type="custom">pharmjournal-1499</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>ДОКЛИНИЧЕСКИЕ И КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PRECLINICAL AND CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Разработка и валидация методики определения нейтрализующих антител к трастузумабу в сыворотке крови человека методом иммуноферментного анализа</article-title><trans-title-group xml:lang="en"><trans-title>Development and Validation of the ELISA Method for Neutralizing Anti-trastuzumab Antibodies Detection in Human Blood Serum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4568-1172</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колганова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolganova</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>445043, Самарская область, г. о. Тольятти, Территория ОЭЗ ППТ, Шоссе № 4, здание 5А</p></bio><bio xml:lang="en"><p>5A, Shosse No. 4, Special of industrial and production economic zone, Togliatti Urban District, Samara Region, 445043</p></bio><email xlink:type="simple">m.kolganova@mabscale.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/0009-0003-2645-4799</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сагимбаева</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sagimbaeva</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>445043, Самарская область, г. о. Тольятти, Территория ОЭЗ ППТ, Шоссе № 4, здание 5А</p></bio><bio xml:lang="en"><p>5A, Shosse No. 4, Special of industrial and production economic zone, Togliatti Urban District, Samara Region, 445043</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/0009-0004-7990-8528</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борисова</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisova</surname><given-names>Ju. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>445043, Самарская область, г. о. Тольятти, Территория ОЭЗ ППТ, Шоссе № 4, здание 5А</p></bio><bio xml:lang="en"><p>5A, Shosse No. 4, Special of industrial and production economic zone, Togliatti Urban District, Samara Region, 445043</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/0000-0002-2485-6482</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бекетов</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Beketov</surname><given-names>E. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>445043, Самарская область, г. о. Тольятти, Территория ОЭЗ ППТ, Шоссе № 4, здание 5А; 249036, Калужская область, г. Обнинск, ул. Маршала Жукова, д. 10</p></bio><bio xml:lang="en"><p>5A, Shosse No. 4, Special of industrial and production economic zone, Togliatti Urban District, Samara Region, 445043; 10, Marshal Zhukov str., Obninsk, Kaluga Region, 249036</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1185-8630</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шохин</surname><given-names>И. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Shokhin</surname><given-names>I. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117638, г. Москва, Симферопольский бульвар, д. 8</p></bio><bio xml:lang="en"><p>8, Simferopolskiy bulv., Moscow, 117638</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ООО «Мабскейл»</institution></aff><aff xml:lang="en"><institution>LLC "Mabscale"</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «Мабскейл»; Медицинский радиологический научный центр имени А.Ф. Цыба – филиал ФГБУ «НМИЦ радиологии» Минздрава России</institution></aff><aff xml:lang="en"><institution>LLC "Mabscale"; Medical Radiological Research Center named after A.F. Tsyba – branch of the Federal State Budgetary Institution "NMITs Radiology"</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ООО «Центр Фармацевтической Аналитики» (ООО «ЦФА»)</institution></aff><aff xml:lang="en"><institution>LLC "CPHA"</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>05</month><year>2023</year></pub-date><volume>12</volume><issue>2</issue><fpage>190</fpage><lpage>197</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колганова М.А., Сагимбаева О.С., Борисова Ю.С., Бекетов Е.Е., Шохин И.Е., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Колганова М.А., Сагимбаева О.С., Борисова Ю.С., Бекетов Е.Е., Шохин И.Е.</copyright-holder><copyright-holder xml:lang="en">Kolganova M.A., Sagimbaeva O.S., Borisova J.S., Beketov E.E., Shokhin I.E.</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.pharmjournal.ru/jour/article/view/1499">https://www.pharmjournal.ru/jour/article/view/1499</self-uri><abstract><sec><title>Введение</title><p>Введение. «Трастузумаб» – препарат специфической анти-HER2 терапии одного из самых распространенных типов онкологических заболеваний – рака молочной железы. Несмотря на то, что препарат давно представлен на фармацевтическом рынке, дальнейшее совершенствование связанных с ним аналитических методик остается актуальным в первую очередь в свете разработки и исследования действия биоаналогов. Для трастузумаба одной из возможных нежелательных реакций со стороны иммунной системы является иммуногенность – выработка противолекарственных антител к препарату, в том числе нейтрализующих антител, которые могут влиять на эффективность и профиль безопасности препарата.</p></sec><sec><title>Цель</title><p>Цель. Разработка и валидация методики определения нейтрализующих антител к трастузумабу в сыворотке крови человека.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Определение нейтрализующих антител к трастузумабу проводилось с помощью метода конкурентного иммуноферментного анализа, с использованием фотометрического детектирования в видимом диапазоне спектра.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Разработанная методика была валидирована по показателям: предел исключения, чувствительность, селективность, специфичность, прецизионность и стабильность (краткосрочная и долгосрочная). Для снижения интерференции компонентов биологической матрицы в анализе на этапе разработки было определено значение минимального необходимого разбавления (1 : 200). Рассчитанное значение предела исключения составило 14,62 %. Чувствительность разработанной методики составила 1985,2 нг/мл нейтрализующих антител к трастузумабу.</p></sec><sec><title>Заключение</title><p>Заключение. Полученные при валидации методики результаты позволяют применять методику определения нейтрализующих антител к трастузумабу в сыворотке крови человека оценки иммуногенности препаратов трастузумаба при проведении клинических исследований биоаналогичности.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Trastuzumab is the first known anti-HER2 agent, which revolutionized the treatment of one of the most common cancer types – breast cancer. Despite trastuzumab being approved long time ago, further improvement of related analytical methods remains relevant primarily due to the emergence of new biosimilars. For instance, immunogenicity – adverse reaction which is usually associated with biological drugs, can still be relevant for trastuzumab. Anti-drug antibodies, including neutralizing antibodies, caused by trastuzumab therapy, can affect drug effectiveness and safety profile.</p></sec><sec><title>Aim</title><p>Aim. The aim of this study was to develop and validate the analytical method for neutralizing anti-trastuzumab antibodies determination in human blood serum.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The neutralizing anti-trastuzumab antibody determination was carried out by the competitive ELISA method, using spectrophotometric detection in the visible range of the spectrum.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. The developed method was validated for cut-point, selectivity, sensitivity, specificity, precision and stability (short-term and long-term). To decrease the background noise from non-specific binding of sera components, the minimum required dilution value was determined at 0.5 % serum. The calculated value for cut-point was 14.62 %. The sensitivity of the developed method was estimated at 1985.2 ng/mL of neutralizing anti-trastuzumab antibodies.</p></sec><sec><title>Conclusion</title><p>Conclusion. The obtained results allowed us to apply the developed ELISA method for the neutralizing anti-trastuzumab antibodies determination in human blood serum during trastuzumab immunogenicity assessment in bioequivalence clinical trials.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>«Трастузумаб»</kwd><kwd>нейтрализующие антитела</kwd><kwd>противолекарственные антитела</kwd><kwd>иммуногенность</kwd><kwd>биоаналоги</kwd></kwd-group><kwd-group xml:lang="en"><kwd>trastuzumab</kwd><kwd>neutralizing antibodies</kwd><kwd>anti-drug antibodies</kwd><kwd>immunogenicity</kwd><kwd>biosimilars</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Каприн А. Д., Старинский В. В., Шахзадова А. О. Злокачественные новообразования в России в 2020 году (заболеваемость и смертность). М.: МНИОИ им. П. А. 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