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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">pmedpharm</journal-id><journal-title-group><journal-title xml:lang="ru">Фармация и фармакология</journal-title><trans-title-group xml:lang="en"><trans-title>Pharmacy &amp; Pharmacology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2307-9266</issn><issn pub-type="epub">2413-2241</issn><publisher><publisher-name>Pyatigorsk Medical and Pharmaceutical Institute - branch of Volgograd State Medical Univer</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.19163/2307-9266-2022-10-4-371-386</article-id><article-id custom-type="elpub" pub-id-type="custom">pmedpharm-1167</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>ФАРМАКОЛОГИЯ И КЛИНИЧЕСКАЯ ФАРМАКОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHARMACOLOGY AND CLINICAL PHARMACOLOGY</subject></subj-group></article-categories><title-group><article-title>СОВРЕМЕННАЯ НАПРАВЛЕННАЯ ПРОТИВОВИРУСНАЯ ТЕРАПИЯ COVID-19: РЕЗУЛЬТАТЫ МНОГОЦЕНТРОВОГО КЛИНИЧЕСКОГО ИССЛЕДОВАНИЯ ЭФФЕКТИВНОСТИ И БЕЗОПАСНОСТИ ФИКСИРОВАННОЙ КОМБИНАЦИИ, СОДЕРЖАЩЕЙ НИРМАТРЕЛВИР И РИТОНАВИР</article-title><trans-title-group xml:lang="en"><trans-title>MODERN DIRECTED ANTIVIRAL COVID-19 THERAPY: RESULTS OF MULTICENTER CLINICAL EFFECTIVENESS AND SAFETY STUDY OF FIXED NIRMATRELVIR+RITONAVIR COMBINATION</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2290-0013</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балыкова</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Balykova</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, член-корреспондент РАН, заведующий кафедрой педиатрии, директор Медицинского института</p><p>430005, Россия, г. Саранск, ул. Большевистская, д. 68</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Professor, Corresponding Member of the Russian Academy of Sciences, Head of the Department of Pediatrics, Director of Medical Institute </p><p>68, Bol’shevistskaya Str., Saransk, Republic of Mordovia, Russia, 430005</p></bio><email xlink:type="simple">larisabalykova@yandex.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/0000-0002-3004-2063</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Селезнева</surname><given-names>Н. M.</given-names></name><name name-style="western" xml:lang="en"><surname>Selezneva</surname><given-names>N. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, доцент кафедры госпитальной терапии </p><p>430005, Россия, г. Саранск, ул. Большевистская, д. 68</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Associate Professor of the Department of Hospital Therapy</p><p>68, Bol’shevistskaya Str., Saransk, Republic of Mordovia, Russia, 430005</p></bio><email xlink:type="simple">nata_rm@mail.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/0000-0001-9342-0909</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Горшенина</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorshenina</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, доцент кафедры госпитальной терапии Медицинского института</p><p>430005, Россия, г. Саранск, ул. Большевистская, д. 68</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Associate Professor, Department of Hospital Therapy, Medical Institute </p><p>68, Bol’shevistskaya Str., Saransk, Republic of Mordovia, Russia, 430005</p></bio><email xlink:type="simple">lena.medfak@yandex.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/0000-0001-8307-2787</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шепелева</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Shepeleva</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, доцент кафедры госпитальной терапии Медицинского института</p><p>430005, Россия, г. Саранск, ул. Большевистская, д. 68</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Associate Professor, Department of Hospital Therapy, Medical Institute</p><p>68, Bol’shevistskaya Str., Saransk, Republic of Mordovia, Russia, 430005</p></bio><email xlink:type="simple">shepeleva-oi@rambler.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/0000-0002-4272-9540</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кириченко</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kirichenko</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-пульмонолог, заместитель главного врача по медицинской части</p><p>153025, Россия, г. Иваново, ул. Ермака, д. 52/2</p></bio><bio xml:lang="en"><p>pulmonologist, Deputy Chief Physician for medical affairs</p><p>Bld. 2, 52, Ermak Str., Ivanovo, Russia, 153025</p></bio><email xlink:type="simple">igb2@ivreg.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5709-8913</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Симакина</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Simakina</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-инфекционист, заведующая инфекционным отделением </p><p>214006, Россия, Смоленск, ул. Фрунзе, д. 40</p></bio><bio xml:lang="en"><p>infectious disease specialist, Head of the Infectious Diseases Department</p><p>40, Frunze Str., Smolensk, Russia, 214006</p></bio><email xlink:type="simple">e.simakina@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4511-5998</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колонтарев</surname><given-names>К. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolontarev</surname><given-names>K. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор кафедры урологии ФГБОУ ВО МГМСУ им. А.И. Евдокимова Минздрава России; врач-уролог Городской клинической больницы им. С.И. Спасокукоцкого Департамента здравоохранения города Москвы</p><p>127473, Россия, г. Москва, ул. Делегатская, д. 20, стр. 1</p><p>127206, Россия, г. Москва, ул. Вучетича, д. 21</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Professor of the Department of Urology, Evdokimov Moscow State Medical and Dental University; urologist, Spasokukotsky City Clinical Hospital</p><p>Bld. 1, 20, Delegatskaya Str., Moscow, Russia, 127473</p><p>21, Vuchetich Str., Moscow, Russia, 127206</p></bio><email xlink:type="simple">kbk@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6096-5723</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пушкарь</surname><given-names>Д. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Pushkar</surname><given-names>D. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, заведующий кафедрой урологии ФГБОУ ВО МГМСУ им. А.И. Евдокимова Минздрава России; врач-уролог ГКБ им. С.И. Спасокукоцкого Департамента здравоохранения города Москвы; академик РАН</p><p>127473, Россия, г. Москва, ул. Делегатская, д. 20, стр. 1</p><p>127206, Россия, г. Москва, ул. Вучетича, д. 21</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Professor, Head of the Department of Urology, Evdokimov Moscow State Medical and Dental University; urologist, Spasokukotsky City Clinical Hospital</p><p>Bld. 1, 20, Delegatskaya Str., Moscow, Russia, 127473</p><p>21, Vuchetich Str., Moscow, Russia, 127206</p></bio><email xlink:type="simple">pushkardm@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0181-4327</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Земсков</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zemskov</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ассистент кафедры биологической и фармацевтической химии с курсом организации и управления фармацией Медицинского института </p><p>430005, Россия, г. Саранск, ул. Большевистская, д. 68</p></bio><bio xml:lang="en"><p>assistant of the Department of Biological and Pharmaceutical Chemistry with a Course of Organization and Management of Pharmacy, Medical Institute </p><p>68, Bol’shevistskaya Str., Saransk, Republic of Mordovia, Russia, 430005</p></bio><email xlink:type="simple">dizem1978@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7348-9412</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Заславская</surname><given-names>К. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaslavskaya</surname><given-names>K. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ассистент кафедры биологической и фармацевтической химии с курсом организации и управления фармацией Медицинского института</p><p>430005, Россия, г. Саранск, ул. Большевистская, д. 68</p><p> </p></bio><bio xml:lang="en"><p>assistant of the Department of Biological and Pharmaceutical Chemistry with a Course of Organization and Management of Pharmacy, Medical Institute </p><p>68, Bol’shevistskaya Str., Saransk, Republic of Mordovia, Russia, 430005</p></bio><email xlink:type="simple">kiryonok@yandex.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/0000-0003-3456-9409</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Носков</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Noskov</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, заведующий кафедрой госпитальной терапии ФГБОУ ВО Ярославский медицинский университет Минздрава России; врач-терапевт ГБУЗ ЯО «КБ №3»</p><p>150000, Россия, г. Ярославль, ул. Революционная, д. 5</p><p>150007, Россия, г. Ярославль, ул. Маяковского, д. 61</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Head of the Department of Hospital Therapy, Yaroslavl State Medical University; general practitioner, Clinical Hospital No. 3</p><p>5, Revolutionary Str., Yaroslavl, Russia, 150000</p><p>61, Mayakovsky Str., Yaroslavl, Russia, 150007</p></bio><email xlink:type="simple">Noskov03@gmail.com</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5056-374X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Таганов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Taganov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор кафедры дерматовенерологии с курсом косметологии факультета непрерывного медицинского образования медицинского института </p><p>117198, Россия, г. Москва, ул. Миклухо-Маклая, д. 6</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Professor of the Department of Dermatovenereology with a Course of Cosmetology of the Faculty of Continuous Medical Education</p><p>6, Miklukho-Maklay Str., Moscow, Russia, 117198</p></bio><email xlink:type="simple">matis87177@yandex.ru</email><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5998-4874</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белый</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bely</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, старший лаборант кафедры пропедевтики внутренних болезней и гастроэнтерологии </p><p>127473, Россия, г. Москва, ул. Делегатская, д. 20, стр. 1</p></bio><bio xml:lang="en"><p>Candidate of Sciences (Medicine), Senior Laboratory Assistant, Department of Propaedeutics of Internal Diseases and Gastroenterology</p><p>Bld. 1, 20, Delegatskaya Str., Moscow, Russia, 127473</p></bio><email xlink:type="simple">pbely@ncpharm.ru</email><xref ref-type="aff" rid="aff-7"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Национальный исследовательский Мордовский государственный университет им. Н.П. Огарёва»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Ogarev Mordovia State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Областное бюджетное учреждение здравоохранения «Ивановская клиническая больница имени Куваевых»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ivanovo Clinical Hospital named after the Kuvaevs</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Областное государственное бюджетное учреждение здравоохранения «Клиническая больница № 1»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Smolensk clinical hospital No. 1</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Московский государственный медико-стоматологический университет имени А.И. Евдокимова» Министерства здравоохранения Российской Федерации;&#13;
&#13;
Городская клиническая больница имени С.И. Спасокукоцкого Департамента здравоохранения города Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Evdokimov Moscow State Medical and Dental University;&#13;
Spasokukotsky City Clinical Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Ярославский государственный медицинский университет» Министерства здравоохранения Российской Федерации;&#13;
Государственное бюджетное учреждение здравоохранения Ярославской области «Клиническая больница № 3»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Yaroslavl State Medical University;&#13;
Clinical Hospital No. 3</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Российский университет дружбы народов»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Peoples’ Friendship University of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Московский государственный медико-стоматологический университет имени А.И. Евдокимова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Evdokimov Moscow State Medical and Dental University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>30</day><month>10</month><year>2022</year></pub-date><volume>10</volume><issue>4</issue><fpage>371</fpage><lpage>386</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Балыкова Л.А., Селезнева Н.M., Горшенина Е.И., Шепелева О.И., Кириченко Н.В., Симакина Е.Н., Колонтарев К.Б., Пушкарь Д.Ю., Земсков Д.Н., Заславская К.Я., Носков С.М., Таганов А.В., Белый П.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Балыкова Л.А., Селезнева Н.M., Горшенина Е.И., Шепелева О.И., Кириченко Н.В., Симакина Е.Н., Колонтарев К.Б., Пушкарь Д.Ю., Земсков Д.Н., Заславская К.Я., Носков С.М., Таганов А.В., Белый П.А.</copyright-holder><copyright-holder xml:lang="en">Balykova L.A., Selezneva N.M., Gorshenina E.I., Shepeleva O.I., Kirichenko N.V., Simakina E.N., Kolontarev K.B., Pushkar D.Y., Zemskov D.N., Zaslavskaya K.Y., Noskov S.M., Taganov A.V., Bely P.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.pharmpharm.ru/jour/article/view/1167">https://www.pharmpharm.ru/jour/article/view/1167</self-uri><abstract><p>В статье представлены данные открытого двухэтапного многоцентрового исследования по оценке эффективности и безопасности комбинированного препарата (фиксированная комбинация нирматрелвир 300 мг и ритонавир 100 мг) в комплексной терапии у пациентов с COVID-19.</p><sec><title>Цель</title><p>Цель. Оценить безопасность, переносимость и фармакокинетические параметры фиксированной комбинации нирматрелвир 300 мг и ритонавир, 100 мг у здоровых добровольцев, эффективность и безопасность применения препарата в комплексной терапии в сравнении со стандартной терапией у пациентов с COVID-19.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Открытое двухэтапное многоцентровое клиническое исследование по оценке основных фармакокинетических параметров, безопасности, а также эффективности в отношении COVID-19 лекарственного препарата нирматрелвир 300 мг и ритонавир 100 мг (Скайвира® ООО «ПРОМОМЕД РУС», Россия) у взрослой популяции включало 2 этапа. На I этапе оценивалась безопасность, переносимость и фармакокинетические параметры у здоровых добровольцев (старше 18 лет) с целью подтверждения их сопоставимости с литературными данными, известными для набора действующих веществ. На II этапе оценивалась эффективность и безопасность у пациентов с COVID-19. В рамках II этапа в исследовании участвовало 264 пациента (мужчины и женщины в возрасте от 18 до 80 лет), которые были распределены на две группы. Пациенты первой группы (n=132) получали исследуемый препарат (нирматрелвир 300 мг и ритонавир 100 мг) по 1 таблетке 2 раза в день с интервалом 12±2 ч в течение 5 дней в комплексе с патогенетической и симптоматической терапией. Пациенты второй группы (n=132) получали стандартную терапию в соответствии с утвержденными Временными методическими рекомендациями по профилактике и лечению новой коронавирусной инфекции, утвержденными Министерством здравоохранения Российской Федерации (Версия 15 от 22.02.2022).</p></sec><sec><title>Результаты</title><p>Результаты. За время исследования ни у одного пациента из группы (нирматрелвир + ритонавир) не наблюдалось перехода течения COVID-19 в более тяжелую степень в отличие от пациентов группы стандартной терапии. Среди участников исследования были пациенты с сопутствующими заболеваниями (68% от общей популяции), с факторами риска прогрессирования COVID-19 до тяжелого течения и риска госпитализации (75% от общей популяции). В группе исследуемого препарата не было ни одного случая перехода COVID-19 в более тяжелую степень течения. К 6-му дню в группе (нирматрелвир + ритонавир) доля пациентов, достигших полного выздоровления, была больше в 2 раза и составляла 35,61% (p=0,0001), а доля пациентов с отрицательным анализом РНК к SARS-CoV-2 была на 20% выше, чем у группы сравнения и составила 82,58% (p=0,0001). Терапия фиксированной комбинацией (нирматрелвир + ритонавир) характеризуется благоприятным профилем безопасности, сопоставимым со стандартной терапией. Выявленные нежелательные реакции носили транзиторный характер и не требовали отмены терапии или изменения схемы лечения.</p></sec><sec><title>Заключение</title><p>Заключение. Фиксированная комбинация (нирматрелвир + ритонавир) характеризуется благоприятным профилем безопасности у пациентов с COVID-19, сопоставимым со стандартной терапией. Полученные данные свидетельствуют о клинической и фармакоэкономической целесообразности включения фиксированной комбинации нирматрелвира с ритонавиром в схему лечения COVID-19.</p></sec></abstract><trans-abstract xml:lang="en"><p>The article presents the data from an open, two-stage, multicenter study on the efficacy and safety evaluation of a combined drug (a fixed combination of nirmatrelvir 300 mg and ritonavir 100 mg) in the complex therapy in COVID-19 patients.</p><p>The aim of the study was to assess the safety, tolerability and pharmacokinetic parameters of the fixed combination of nirmatrelvir 300 mg and ritonavir 100 mg in healthy volunteers, the efficacy and safety assessment of the drug in the combination therapy compared with the standard therapy in COVID-19 patients.</p><sec><title>Material and methods</title><p>Material and methods. An open two-stage multicenter clinical study to assess the main pharmacokinetic parameters, safety, and efficacy against COVID-19 of the drug nirmatrelvir 300 mg and ritonavir 100 mg combination (Skyvira® PROMOMED RUS LLC, Russia) in the adult population, included 2 stages. At stage 1, safety, tolerability and pharmacokinetic parameters were evaluated in healthy volunteers (over 18 years of age) in order to confirm their comparability with the literature data known for a set of active substances. Phase 2 assessed efficacy and safety in COVID-19 patients. As a part of the second stage, the study involved 264 patients (men and women aged 18 to 80 years), who had been divided into two groups. The first group patients (n=132) received the study drugs (nirmatrelvir 300 mg and ritonavir 100 mg) – 1 tablet twice a day with an interval of 12±2 hours for 5 days in combination with pathogenetic and symptomatic therapy. The second group patients (n=132) received standard therapy in accordance with the approved Temporary Guidelines for the Prevention and Treatment of Novel Coronavirus Infection (Version 15 dated February 22, 2022).</p></sec><sec><title>Results</title><p>Results. During the study, none of the patients from the (nirmatrelvir + ritonavir) group experienced a transition of the COVID-19 course to a heavier severity level, in contrast to the patients in the standard therapy group. The study participants included patients with comorbidities (68% of the general population), with risk factors for COVID-19 progression to a heavier severity level and the risk of hospitalization (75% of the general population). There were no cases of COVID-19 progression to a heavier severity level in the study drug group. By the 6th day, in the nirmatrelvir + ritonavir group, the proportion of the patients who had achieved a complete recovery was twice more and amounted to 35.61% (p=0.0001), and the proportion of the patients with a negative RNA analysis to SARS-CoV-2 was 20% higher than in the comparison group, and amounted to 82.58% (p=0.0001). The fixed nirmatrelvir + ritonavir combination therapy has a favorable safety profile comparable to the standard therapy. The identified adverse reactions were transient in nature and did not require discontinuation of therapy or changes in the treatment regimen.</p></sec><sec><title>Conclusion</title><p>Conclusion. The fixed nirmatrelvir + ritonavir combination has a favorable safety profile in COVID-19 patients, comparable to the standard therapy. The data obtained demonstrate a clinical and pharmacoeconomic feasibility of including the fixed (nirmatrelvir + ritonavir) combination in the COVID-19 treatment regimen.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>коронавирус</kwd><kwd>COVID-19</kwd><kwd>нирматрелвир</kwd><kwd>ритонавир</kwd><kwd>Скайвира®</kwd><kwd>нежелательные явления</kwd></kwd-group><kwd-group xml:lang="en"><kwd>coronavirus</kwd><kwd>COVID-19</kwd><kwd>nirmatrelvir</kwd><kwd>ritonavir</kwd><kwd>Skyvira®</kwd><kwd>adverse events</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Клиническое исследование проводилось при поддержке компании ООО «ПРОМОМЕД РУС».  Спонсор не оказывал влияния на выбор материала для публикации, анализ и интерпретацию данных.</funding-statement><funding-statement xml:lang="en">The clinical study was carried out with the support of LLC PROMOMED RUS. 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