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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">tumors</journal-id><journal-title-group><journal-title xml:lang="ru">Malignant tumours</journal-title><trans-title-group xml:lang="en"><trans-title>Malignant tumours</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2224-5057</issn><issn pub-type="epub">2587-6813</issn><publisher><publisher-name>Rosoncoweb</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18027/2224-5057-2024-14-1-56-66</article-id><article-id custom-type="elpub" pub-id-type="custom">tumors-1286</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group></article-categories><title-group><article-title>Исследование фармакокинетики, фармакодинамики и безопасности биоаналога пембролизумаба RPH-075 в сравнении с препаратом Китруда® у пациентов со злокачественными новообразованиями</article-title><trans-title-group xml:lang="en"><trans-title>Study of the pharmacokinetics, pharmacodynamics, and safety of the biosimilar pembrolizumab RPH-075 compared to Keytruda® in patients with malignant neoplasms</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7253-7091</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самойленко</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Samoylenko</surname><given-names>I.  V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самойленко Игорь Вячеславович</p><p>115478 Москва, Каширское шоссе, 23</p></bio><bio xml:lang="en"><p>Samoylenko Igor Vyacheslavovich</p><p>23 Kashirskoe Shosse, Moscow 115478</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/0000-0001-9864-3837</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Покатаев</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pokataev</surname><given-names>I. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Покатаев Илья Анатольевич</p><p>117152 Москва, Загородное шоссе, 18А</p></bio><bio xml:lang="en"><p>Pokataev Ilya Anatolevich</p><p>18A Zagorodnoe Shosse, Moscow 117152</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/0000-0003-4848-6938</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жукова</surname><given-names>Л. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhukova</surname><given-names>L. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жукова Людмила Григорьевна</p><p>111123 Москва, Новогиреевская ул., 1, корп. 1</p></bio><bio xml:lang="en"><p>Zhukova Lyudmila Grigorevna</p><p>Build. 1, 1 Novogireevskaya St., Moscow 111123</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1973-1092</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Строяковский</surname><given-names>Д. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Stroyakovsky</surname><given-names>D.  L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Строяковский Даниил Львович</p><p>143515 Московская область, п. Истра, 27</p></bio><bio xml:lang="en"><p>Stroyakovskii Daniil Lvovich</p><p>27 Istra, Moscow Region 143515</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9368-5517</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Орлова</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Orlova</surname><given-names>R.  V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Орлова Рашида Вахидовна</p><p>198255 Санкт-Петербург, пр-кт Ветеранов, 56</p></bio><bio xml:lang="en"><p>Orlova Rashida Vakhidovna</p><p>56 Veteranov Prospekt, Saint Petersburg 198255</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0918-3857</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мудунов</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mudunov</surname><given-names>А. М.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мудунов Али Мурадович</p><p>127521 Москва, Анненская ул., 21, стр. 1</p></bio><bio xml:lang="en"><p>Mudunov Ali Muradovich</p><p>Build 1, 21 Annenskaya St., Moscow 127521</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4546-0011</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пак</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Pak</surname><given-names>М. 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S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мочалова Анастасия Сергеевна</p><p>125284 Москва, 2-й Боткинский пр-д, д. 5, корп. 4</p></bio><bio xml:lang="en"><p>Mochalova Anastasiya Sergeevna</p><p>Build. 4, 5 2nd Botkinskiy proezd, Moscow 125284</p></bio><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3398-4128</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алексеев</surname><given-names>Б. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekseev</surname><given-names>B. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексеев Борис Яковлевич</p><p>125284 Москва, 2-й Боткинский пр-д, 3</p></bio><bio xml:lang="en"><p>Alekseev Boris Yakovlevich</p><p>32nd Botkinskiy proezd, Moscow 125284</p></bio><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0015-7094</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Секачева</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Sekacheva</surname><given-names>М. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Секачева Марина Игоревна</p><p>119991 Москва, ул. Трубецкая, 8, стр. 2</p></bio><bio xml:lang="en"><p>Sekacheva Marina Igorevna</p><p>Build. 2, 8 Trubetskaya St., Moscow 119991</p></bio><xref ref-type="aff" rid="aff-10"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1834-0981</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ледин</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ledin</surname><given-names>Е. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ледин Евгений Витальевич</p><p>125284 Москва, 2-й Боткинский пр-д, д. 5, корп. 4</p></bio><bio xml:lang="en"><p>Ledin Evgenii Vitalevich</p><p>Build. 4, 52nd Botkinskiy proezd, Moscow 125284</p></bio><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7028-0496</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петкова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Petkova</surname><given-names>А. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петкова Анна Васильевна</p><p>119421 Москва, Ленинский пр-т, 111, корп. 1</p></bio><bio xml:lang="en"><p>Petkova Anna Vasilevna</p><p>Build. 1, 111 Leninskii Prospekt, Moscow 119421</p></bio><xref ref-type="aff" rid="aff-11"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5848-0869</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ханонина</surname><given-names>Е. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Khanonina</surname><given-names>Е. К.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ханонина Елизавета Константиновна</p><p>119991 Москва, ул. Трубецкая, 8, стр. 2; 119421 Москва, Ленинский пр-т, 111, корп. 1</p></bio><bio xml:lang="en"><p>Khanonina Elizaveta Konstantinovna</p><p>Build. 2, 8 Trubetskaya St., Moscow 119991; Build. 1, 111 Leninskii Prospekt, Moscow 119421</p></bio><email xlink:type="simple">khanonina@rpharm.ru</email><xref ref-type="aff" rid="aff-12"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-5602-7926</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Подолякина</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Podolyakina</surname><given-names>А. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Подолякина Анна Игоревна</p><p>119421 Москва, Ленинский пр-т, 111, корп. 1</p></bio><bio xml:lang="en"><p>Podolyakina Anna Igorevna</p><p>Build. 1, 111 Leninskii Prospekt, Moscow 119421</p></bio><xref ref-type="aff" rid="aff-11"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7826-9937</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Разживина</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Razzhivina</surname><given-names>V. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Разживина Виктория Александровна</p><p>119421 Москва, Ленинский пр-т, 111, корп. 1</p></bio><bio xml:lang="en"><p>Razzhivina Viktoriya Aleksandrovna</p><p>Build. 1, 111 Leninskii Prospekt, Moscow 119421</p></bio><xref ref-type="aff" rid="aff-11"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ГБУЗ г. Москвы «Городская клиническая онкологическая больница № 1 Департамента здравоохранения г. Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>City Clinical Oncological Hospital No. 1, Moscow Healthcare Department</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГБУЗ г. Москвы «Московский клинический научно-практический центр им. А.С. Логинова Департамента здравоохранения г. Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A. S. Loginov Moscow Clinical Scientific Center, Moscow Healthcare Departmen</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ГБУЗ г. Москвы «Московская городская онкологическая больница № 62 Департамента здравоохранения г. Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow City Oncology Hospital No. 62, Moscow Healthcare Department</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>СПб ГБУЗ «Городской клинический онкологический диспансер»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>City Clinical Oncological Dispensary</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>ООО «РисерчЛаб»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research medical center for clinical trials «Research lab»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru"><institution>ГБУЗ «Кузбасский клинический онкологический диспансер имени М.С. Раппопорта»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kuzbass Clinical Oncology Dispensary named after M. S. Rappoport</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-8"><aff xml:lang="ru"><institution>АО «Группа компаний Медси»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Clinical Hospital MEDSI</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-9"><aff xml:lang="ru"><institution>Московский научно-исследовательский онкологический институт им. П.А. Герцена — филиал ФГБУ «Национальный медицинский исследовательский центр радиологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P. A. Hertsen Moscow Oncology Research Institute — branch of the National Medical Research Radiological Center, Ministry of Health of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-10"><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><aff-alternatives id="aff-11"><aff xml:lang="ru"><institution>АО «Р-Фарм»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>R-Pharm</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-12"><aff xml:lang="ru"><institution>ФГАОУ ВО Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России (Сеченовский Университет); АО «Р-Фарм»</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); R-Pharm</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>15</day><month>03</month><year>2024</year></pub-date><volume>14</volume><issue>1</issue><fpage>56</fpage><lpage>66</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Самойленко И.В., Покатаев И.А., Жукова Л.Г., Строяковский Д.Л., Орлова Р.В., Мудунов А.М., Пак М.Б., Зернова Е.В., Соболев А.В., Мочалова А.С., Алексеев Б.Я., Секачева М.И., Ледин Е.В., Петкова А.В., Ханонина Е.К., Подолякина А.И., Разживина В.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Самойленко И.В., Покатаев И.А., Жукова Л.Г., Строяковский Д.Л., Орлова Р.В., Мудунов А.М., Пак М.Б., Зернова Е.В., Соболев А.В., Мочалова А.С., Алексеев Б.Я., Секачева М.И., Ледин Е.В., Петкова А.В., Ханонина Е.К., Подолякина А.И., Разживина В.А.</copyright-holder><copyright-holder xml:lang="en">Samoylenko I.V., Pokataev I.А., Zhukova L.G., Stroyakovsky D.L., Orlova R.V., Mudunov А.М., Pak М.В., Zernova Е.V., Sobolev А.V., Mochalova А.S., Alekseev B.Y., Sekacheva М.I., Ledin Е.V., Petkova А.V., Khanonina Е.К., Podolyakina А.I., Razzhivina V.А.</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.malignanttumors.org/jour/article/view/1286">https://www.malignanttumors.org/jour/article/view/1286</self-uri><abstract><sec><title>Введение</title><p>Введение: Пембролизумаб представляет собой гуманизированное моноклональное антитело, селективно блокирующее взаимодействие между рецептором PD-1 и его лигандами. Препарат RPH-075 является биоаналогом оригинального препарата Китруда®.</p></sec><sec><title>Цель</title><p>Цель: Целью данного исследования было установление эквивалентности фармакокинетических (ФК) свойств, а также показателей фармакодинамики (ФД), безопасности и иммуногенности препарата RPH-075 в сравнении с препаратом Китруда® у пациентов со злокачественными новообразованиями.</p></sec><sec><title>Материалы иметоды</title><p>Материалы иметоды: В настоящее многоцентровое двойное слепое рандомизированное исследование было включено 90 пациентов с меланомой и немелкоклеточным раком легкого, которые были рандомизированы в 2 группы терапии (RPH-075 и Китруда®) в соотношении 1:1. В обеих группах пембролизумаб применялся в виде монотерапии в дозе 200 мг внутривенно раз в 3 недели до наступления прогрессирования или непереносимой токсичности. Основной задачей в исследовании была оценка ФК после первого введения. Первичной конечной точкой оценки фармакокинетики был параметр AUC(0–504), безопасности — частота нежелательных реакций (НР). Решение об эквивалентности ФК свойств планировалось принять в случае, если границы двустороннего 90% доверительного интервала (ДИ) для отношения геометрических средних AUC(0–504) после однократного введения каждого из препаратов будут находиться в пределах 80,00–125,00%. Вторичными конечными точками были Сmax после первого введения, а также прочие параметры фармакокинетики, безопасности и иммуногенности. В рамках исследования также оценивались ФК и ФД параметры после многократного введения, и была запланирована пилотная оценка эффективности.</p></sec><sec><title>Результаты</title><p>Результаты: В статье приводится анализ данных первого этапа исследования (после первого введения препарата с периодом наблюдения в 3 недели). Анализ данных был заслепленным, поэтому группы были закодированы как А и Б; 90% ДИ для отношения средних геометрических AUC(0–504) после введения препарата А к AUC(0–504) препарата Б составил 93,50–121,16%, а для отношения Б к А — 82,54–106,95%. Полученные интервалы соответствуют заданному пределу эквивалентности 80,00–125,00%, на основании чего можно заключить, что препараты RPH-075 и Китруда® являются ФК эквивалентными. Оба препарата продемонстрировали сопоставимо высокое насыщение PD-1 рецепторов CD4+/CD8+ лимфоцитов по окончанию первого цикла (день 22). За анализируемый период связывающие антитела к пембролизумабу были выявлены у 2 пациентов (по одному в каждой группе), таким образом, оба препарата обладают сопоставимо низкой иммуногенностью. При анализе профиля безопасности за указанный период было зарегистрировано 7 НР у 4 пациентов в группе А и 4 НР у 3 пациентов в группе Б. Частота НР между группами статистически значимо не отличалась.</p></sec><sec><title>Выводы</title><p>Выводы: Показатели ФК, ФД, иммуногенности и безопасности биоаналога пембролизумаба RPH-075 были эквивалентны показателям оригинального препарата Китруда®.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction: Pembrolizumab is a humanized monoclonal antibody selectively blocking the interaction between the PD-1 receptor and its ligands. The drug RPH-075 is a biosimilar to the original Keytruda®.</p></sec><sec><title>Objective</title><p>Objective: To establish the equivalence of pharmacokinetic (PK) properties, as well as pharmacodynamic (PD) parameters, safety, and immunogenicity of the drug RPH-075 compared to Keytruda® in patients with malignant tumors.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods: This multicenter double-blind randomized study included 90 patients with melanoma and non-small cell lung cancer who were randomized into two treatment groups (RPH-075 and Keytruda ®) in 1:1 ratio. In both groups, pembrolizumab was administered as monotherapy at a dose of 200 mg intravenously every 3 weeks until progression or intolerable toxicity. The primary aim of the study was to assess PK after the first administration. The primary endpoint for PK assessment was AUC(0–504), and for safety, it was the frequency of adverse events (AE). The decision on PK equivalence was planned to be made if the two-sided 90 % confidence interval (CI) for the geometric mean ratio of AUC(0–504) after a single administration of each drug would be within 80.00–125.00 %. Secondary endpoints included Cmax after the first administration, as well as the other PK, safety, and immunogenicity parameters. This study also assessed PK and PD parameters after multiple administrations, and a pilot efficacy assessment was planned.</p></sec><sec><title>Results</title><p>Results: This article presents the analysis of data from the first stage of the study (after the first drug administration with a 3‑week observation period). The data analysis was blinded, and the treatment groups were coded as A and B. The 90 % CI for the geometric mean ratio of AUC(0–504) after the administration of drug A to AUC(0–504) of drug B was 93.50–121.16 %, and for the ratio of B to A, it was 82.54–106.95 %. The obtained intervals met the specified equivalence limit of 80.00–125.00 %, allowing us to conclude that RPH-075 and original Keytruda® are PK equivalent. Both drugs demonstrated comparably high saturation of PD-1 receptors on CD4+ / CD8+ lymphocytes at the end of the first cycle (day 22). Binding antibodies to pembrolizumab were detected in 2 patients (one in each group) over the analyzed period, indicating comparably low immunogenicity for both drugs. Safety profile analysis during this period revealed 7 AEs in 4 patients in group A and 4 AEs in 3 patients in group B. The frequency of AEs did not significantly differ between the groups.</p></sec><sec><title>Conclusions</title><p>Conclusions: PK, PD, immunogenicity, and safety parameters of the pembrolizumab biosimilar RPH-075 were equivalent to those of the original Keytruda®.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пембролизумаб</kwd><kwd>фармакокинетика</kwd><kwd>фармакодинамика</kwd><kwd>иммуногенность</kwd><kwd>безопасность</kwd><kwd>RPH-075</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pembrolizumab</kwd><kwd>pharmacokinetics</kwd><kwd>pharmacodynamics</kwd><kwd>immunogenicity</kwd><kwd>safety</kwd><kwd>RPH-075</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">Царев И.Л., Мелерзанов А.В. Обзор подходов к иммунотерапии в онкологии. 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