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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Biotherapy</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Biotherapy</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский биотерапевтический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-9784</issn><issn publication-format="electronic">1726-9792</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1404</article-id><article-id pub-id-type="doi">10.17650/1726-9784-2023-22-3-36-42</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Detection of a status of microsatellite instability in tumors of patients with endometrioid adenocarcinoma of the ovaries and/or of uterine corpus</article-title><trans-title-group xml:lang="ru"><trans-title>Определение статуса микросателлитной нестабильности в опухолях больных эндометриоидной аденокарциномой яичников и/или тела матки</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-1032-2905</contrib-id><name-alternatives><name xml:lang="en"><surname>Aniskina</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Анискина</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><email>paian-u@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5704-1004</contrib-id><name-alternatives><name xml:lang="en"><surname>Payanidi</surname><given-names>J. G.</given-names></name><name xml:lang="ru"><surname>Паяниди</surname><given-names>Ю. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7297-5240</contrib-id><name-alternatives><name xml:lang="en"><surname>Stroganova</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Строганова</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4674-5484</contrib-id><name-alternatives><name xml:lang="en"><surname>Manina</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Манина</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Bld. 1, 20 Malaya Bronnaya St., Moscow 123104</p></bio><bio xml:lang="ru"><p>123104 Москва, ул. Малая Бронная, 20, стр. 1</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1380-3710</contrib-id><name-alternatives><name xml:lang="en"><surname>Zhordania</surname><given-names>K. I.</given-names></name><name xml:lang="ru"><surname>Жорданиа</surname><given-names>К. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н. Н. Блохина» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Limited Liability Company Institute of Allergology and Clinical Immunology of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ООО «Институт аллергологии и клинической иммунологии»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-10-18" publication-format="electronic"><day>18</day><month>10</month><year>2023</year></pub-date><volume>22</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>36</fpage><lpage>42</lpage><history><date date-type="received" iso-8601-date="2023-10-17"><day>17</day><month>10</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-10-17"><day>17</day><month>10</month><year>2023</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://bioterapevt.abvpress.ru/jour/article/view/1404">https://bioterapevt.abvpress.ru/jour/article/view/1404</self-uri><abstract xml:lang="en"><p><bold>Introduction.</bold> Multiple primary malignant neoplasms of female reproductive organs are a rare pathology. However, over the past decades, there has been an upsurge of interest in the study of this phenomenon in oncology. This is particularly the case for the diagnosis of synchronous endometrioid adenocarcinoma of the ovaries and uterine corpus, which histogenetically belong to the same germ layer and have similar histological structure. Until recently, clinicians relied only on morphological examination in these cases, but with the development of molecular genetic technologies, new diagnostic possibilities have emerged.</p><p><bold>Aim.</bold> Is the detection of the status of microsatellite instability in tumors of patients with endometrioid adenocarcinoma of the ovaries and/or uterine corpus.</p><p><bold>Materials and Methods. </bold>A pilot retrospective molecular genetic study (<italic>n</italic> = 48) was conducted to determine the status of microsatellite instability (MSI) in the tumors of the ovaries and/or uterine corpus: it involved 33 patients with solitary endometrioid ovarian cancer and 15 patients with synchronous endometrioid adenocarcinoma of the ovaries and uterine corpus. Microsatellite instability status was detected using PCR method with subsequent fragment analysis performed on ABI PRISM 3500 genetic analyzer (8 capillaries, Applied Biosystems). DNA was isolated from paraffin blocks of surgical specimens using DNAsorb B extraction kit (AmpliSens, Russia), according to the manufacturer’s manual. DNA concentration was estimated fluorometrically using Qubit 2.0 (Life Technologies, USA). The obtained data were analyzed using GeneMapper program (Thermo Fisher, USA). In case of polymorphism of two and more markers high-level microsatellite instability (MSI-H) was observed.</p><p><bold>Results.</bold> The incidence of MSI-H in solitary endometrioid ovarian cancer (<italic>n</italic> = 33) was 12,1 % (4 cases), while in synchronous ovarian and uterine corpus tumors (<italic>n</italic> = 15) MSI-H incidence made up 20 % (<italic>n</italic> = 3). Herewith, there have been only cases of a combination of endometrioid histotypes of ovarian and endometrial cancer with identical status of microsatellite instability. Thus, the incidence of MSI-H in synchronous endometrioid adenocarcinoma of the ovaries and uterine corpus (20 %) is comparable to that in solitary endometrial cancer.</p><p><bold>Conclusion.</bold> Our pilot study became a significant complement to the previously published materials, as it allowed to confirm the clonal origin of tumors in patients with endometrioid adenocarcinoma of the ovaries and uterine corpus, that can affect the stratification of treatment strategy for this category of patients.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Первично-множественные злокачественные новообразования женских половых органов – редко встречающаяся патология. Однако за последние десятилетия в онкологии возрос интерес к изучению данного феномена. Особенно это касается вопросов диагностики синхронной эндометриоидной аденокарциномы яичников и тела матки, которые гистогенетически относятся к одному и тому же зародышевому листку и имеют одинаковое гистологическое строение. До недавнего времени в этих случаях клиницисты опирались только на морфологическое исследование, но с развитием молекулярно-генетических технологий появились и новые возможности в диагностике.</p><p><bold>Цель исследования</bold> – определение статуса микросателлитной нестабильности (MSI) в опухолях больных эндометриоидной аденокарциномой яичников и/или тела матки.</p><p><bold>Материалы и методы.</bold> Проведено пилотное ретроспективное молекулярно-генетическое исследование (<italic>n</italic> = 48) – определение статуса MSI в опухолях яичников и/или тела матки: 33 больных солитарным эндометриоидным раком яичников и 15 больных синхронной эндометриоидной аденокарциномой яичников и тела матки. Определение статуса MSI проводили методом полимеразной цепной реакции с последующим фрагментным анализом на приборе ABI PRISM 3500 (8 capillaries, Applied Biosystems). ДНК выделяли из парафиновых блоков операционного материала с использованием набора реагентов «ДНКсорб В» («АмплиСенс», Россия) согласно инструкции производителя. Концентрацию ДНК измеряли флуориметрически на приборе Qubit 2.0 (Life Technologies, США). Полученные данные анализировали с помощью программы GeneMapper (Thermo Fisher, США). В случае полиморфности 2 и более маркеров регистрировали микросателлитную нестабильность высокого уровня (MSI-Н).</p><p><bold>Результаты.</bold> При солитарном эндометриоидном раке (<italic>n</italic> = 33) частота встречаемости MSI-H составила 12,1 % (4 случая), а при синхронных опухолях яичников и тела матки (<italic>n</italic> = 15) частота MSI-H – 20 % (3 случая). При этом встречались только случаи сочетания эндометриоидных гистотипов рака яичников и тела матки с тождественным статусом MSI. Таким образом, частота встречаемости MSI-H при синхронной эндометриоидной аденокарциноме яичников и тела матки (20 %) сопоставима с частотой встречаемости при солитарном раке эндометрия.</p><p><bold>Заключение.</bold> Наше пилотное исследование стало важным дополнением опубликованных ранее материалов, поскольку позволило уточнить клональное происхождение опухолей у больных эндометриоидной аденокарциномой яичников и тела матки, что может повлиять на стратификацию лечебной тактики этой категории пациенток.</p></trans-abstract><kwd-group xml:lang="en"><kwd>polyneoplasia</kwd><kwd>endometrioid adenocarcinoma</kwd><kwd>microsatellite instability</kwd><kwd>ovarian cancer</kwd><kwd>endometrial cancer</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>полинеоплазия</kwd><kwd>эндометриоидная аденокарцинома</kwd><kwd>микросателлитная нестабильность</kwd><kwd>рак яичников</kwd><kwd>рак эндометрия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bonneville R., Krook M.A., Kautto E.A. et al. 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