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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">Annals of Clinical and Experimental Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Annals of Clinical and Experimental Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Анналы клинической и экспериментальной неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-5473</issn><issn publication-format="electronic">2409-2533</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1248</article-id><article-id pub-id-type="doi">10.17816/ACEN.1248</article-id><article-id pub-id-type="edn">PBNTQH</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">Association of <italic>COMT</italic> and <italic>MAO-B</italic> gene polymorphic variants with sensitivity to dopaminergic therapy in patients with Parkinson’s disease</article-title><trans-title-group xml:lang="ru"><trans-title>Ассоциация полиморфных вариантов генов <italic>COMT</italic> и <italic>MAO-B</italic> с чувствительностью к дофаминергической терапии у пациентов с болезнью Паркинсона</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5674-4426</contrib-id><name-alternatives><name xml:lang="en"><surname>Khabarova</surname><given-names>Yuliya I.</given-names></name><name xml:lang="ru"><surname>Хабарова</surname><given-names>Юлия Ильинична</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>junior researcher, neurologist, Head, Neurological department, Center for neurodegenerative diseases, Clinic</p></bio><bio xml:lang="ru"><p>м. н. с., врач-невролог, зав. неврологическим отделением Центра нейродегенеративных заболеваний Клиники</p></bio><email>september062007@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4159-500X</contrib-id><name-alternatives><name xml:lang="en"><surname>Tappakhov</surname><given-names>Alexey A.</given-names></name><name xml:lang="ru"><surname>Таппахов</surname><given-names>Алексей Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Assoc. Prof., Department of neurology and psychiatry, senior researcher, Neurodegenerative disorders center</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент каф. «Неврология и психиатрия» Медицинского института, с. н. с. Центра нейродегенеративных заболеваний</p></bio><email>september062007@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1062-1540</contrib-id><name-alternatives><name xml:lang="en"><surname>Popova</surname><given-names>Tatiana E.</given-names></name><name xml:lang="ru"><surname>Попова</surname><given-names>Татьяна Егоровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), neurologist</p></bio><bio xml:lang="ru"><p>д-р мед. наук, врач-невролог</p></bio><email>september062007@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-9677-7526</contrib-id><name-alternatives><name xml:lang="en"><surname>Maksimova</surname><given-names>Nadezhda E.</given-names></name><name xml:lang="ru"><surname>Максимова</surname><given-names>Надежда Евгеньевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>biologist, Center for predictive medicine and bioinformatics</p></bio><bio xml:lang="ru"><p>биолог Центра предиктивной медицины и биоинформатики</p></bio><email>september062007@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5378-2128</contrib-id><name-alternatives><name xml:lang="en"><surname>Asekritova</surname><given-names>Aleksandra S.</given-names></name><name xml:lang="ru"><surname>Асекритова</surname><given-names>Александра Степановна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Assoc. Prof., Department of internal medicine and general practice (family medicine), Head, Center for predictive medicine and bioinformatics</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент каф. «Внутренние болезни и общеврачебная практика (семейная медицина)» Медицинского института, зав. Центром предиктивной медицины и биоинформатики</p></bio><email>september062007@mail.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5499-9524</contrib-id><name-alternatives><name xml:lang="en"><surname>Tatarinova</surname><given-names>Olga V.</given-names></name><name xml:lang="ru"><surname>Татаринова</surname><given-names>Ольга Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Chief doctor, senior researcher</p></bio><bio xml:lang="ru"><p>д-р мед. наук, главный врач, с. н. с.</p></bio><email>september062007@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Yakut Scientific Center for Complex Medical Problems</institution></aff><aff><institution xml:lang="ru">Якутский научный центр комплексных медицинских проблем</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">M.K. Ammosov North-Eastern Federal University</institution></aff><aff><institution xml:lang="ru">Северо-Восточный федеральный университет имени М.К. Аммосова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Lotus Medical Clinic</institution></aff><aff><institution xml:lang="ru">Медицинская клиника «Лотос»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Republican Clinical Hospital No. 3</institution></aff><aff><institution xml:lang="ru">Республиканская клиническая больница № 3</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-10-10" publication-format="electronic"><day>10</day><month>10</month><year>2025</year></pub-date><volume>19</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>55</fpage><lpage>62</lpage><history><date date-type="received" iso-8601-date="2024-12-13"><day>13</day><month>12</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2025-03-21"><day>21</day><month>03</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Khabarova Y.I., Tappakhov A.A., Popova T.E., Maksimova N.E., Asekritova A.S., Tatarinova O.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Хабарова Ю.И., Таппахов А.А., Попова Т.Е., Максимова Н.Е., Асекритова А.С., Татаринова О.В.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Khabarova Y.I., Tappakhov A.A., Popova T.E., Maksimova N.E., Asekritova A.S., Tatarinova O.V.</copyright-holder><copyright-holder xml:lang="ru">Хабарова Ю.И., Таппахов А.А., Попова Т.Е., Максимова Н.Е., Асекритова А.С., Татаринова О.В.</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://annaly-nevrologii.com/pathID/article/view/1248">https://annaly-nevrologii.com/pathID/article/view/1248</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>Levodopa and other dopaminergic agents remain the cornerstone of pharmacotherapy for Parkinson’s disease (PD). Two enzymes play key roles in dopamine metabolism: catechol-O-methyltransferase and monoamine oxidase type B, encoded by the COMT and MAO-B genes respectively.</p> <p><bold>This study aimed at </bold>analyzing potential association between dopaminergic therapy response and carrier status of COMT (rs4680) and MAO-B (rs1799836) polymorphisms in patients with PD.</p> <p><bold>Materials and methods. </bold>The study included 96 PD patients at stages 2–3 on the modified Hoehn and Yahr scale. Most patients (n=64; 66.7%) received levodopa/carbidopa, with 40.6% on combined dopaminergic therapy. All patients underwent assessment of dopaminergic therapy effictiveness using the difference in motor deficit (calculated from part III of the Unified Parkinson’s Disease Rating Scale) between the worst and best states (%). COMT and MAO-B polymorhisms were detected by real-time polymerase chain reaction.</p> <p><bold>Results. </bold>Allelic analysis demonstrated that carriers of the COMT gene rs4680 G allele responded better to dopaminergic therapy than A allele carriers (p = 0.038) (43.78 ± 18.15% vs 38.53 ± 16.58%; p = 0.038). Among men, we found no significant differences in therapy sensitivity related to MAO-B (rs1799836) variants, while female CC genotype carriers demonstrated better treatment response than TC heterozygotes (35.45 ± 17.78% vs 55.16 ± 11.22%; p=0.019).</p> <p><bold>Conclusion. </bold>Our data suggest that in patients with PD, not only drug-induced dyskinesias and motor fluctuations, but also overall sensitivity to dopaminergic therapy may be associated with specific COMT and MAO-B polymorphisms.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Препараты леводопы и другие дофаминергические препараты остаются основой фармакотерапии болезни Паркинсона (БП). В метаболизме дофамина ключевую роль играют два фермента: катехол-О-метилтрансфераза и моноаминоксидаза типа Б, которые кодируются генами COMT и MAO-B соответственно.</p> <p><bold>Целью </bold>настоящего исследования явилось изучение возможной взаимосвязи между выраженностью ответа на дофаминергическую терапию и носительством полиморфных вариантов генов COMT (rs4680) и MAO-B (rs1799836) у пациентов с БП.</p> <p><bold>Материалы и методы. </bold>В исследовании приняли участие 96 пациентов с БП 2–3-й стадии по модифицированной шкале Hoehn–Yahr. Большинство пациентов (n = 64; 66,7%) принимали препараты леводопы/карбидопы, 40,6% пациентов — комбинированную дофаминергическую терапию. Всем включённым в исследование пациентам проводили тест эффективности принимаемой дофаминергической терапии с расчётом разности двигательного дефицита, оценённого по 3-й части Унифицированной рейтинговой шкалы БП, в фазах наихудшего и наилучшего самочувствия (в %). Определение полиморфных вариантов генов COMT и MAO-B проведено методом полимеразной цепной реакции в реальном времени.</p> <p><bold>Результаты. </bold>Аллельный анализ показал, что носители аллеля G гена COMT (rs4680) лучше отвечают на дофаминергическую терапию, чем носители аллеля A (43,78 ± 18,15% против 38,53 ± 16,58%; p = 0,038). Среди мужчин мы не обнаружили значимых различий по чувствительности к дофаминергической терапии в зависимости от носительства полиморфных вариантов гена MAO-B (rs1799836), а женщины — носители генотипа CC характеризовались лучшим ответом на дофаминергическую терапию, чем гетерозиготы TC (35,45 ± 17,78% против 55,16 ± 11,22%; p = 0,019).</p> <p><bold>Заключение. </bold>Основываясь на полученных данных, можно предположить, что не только развитие лекарственных дискинезий и моторных флуктуаций, но и чувствительность к дофаминергической терапии в целом у пациентов с БП может быть обусловлена носительством определённых полиморфных вариантов генов COMT и MAO-B.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Parkinson’s disease</kwd><kwd>polymorphism</kwd><kwd>levodopa</kwd><kwd>dopamine</kwd><kwd>MAO-B</kwd><kwd>COMT</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>болезнь Паркинсона</kwd><kwd>полиморфные варианты</kwd><kwd>леводопа</kwd><kwd>дофамин</kwd><kwd>MAO-B</kwd><kwd>COMT</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Armstrong MJ, Okun MS. 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