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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">Cancer Urology</journal-id><journal-title-group><journal-title xml:lang="en">Cancer Urology</journal-title><trans-title-group xml:lang="ru"><trans-title>Онкоурология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-9776</issn><issn publication-format="electronic">1996-1812</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">627</article-id><article-id pub-id-type="doi">10.17650/1726-9776-2017-13-1-67-73</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>DIAGNOSIS AND TREATMENT OF URINARY SYSTEM TUMORS. URINARY BLADDER CANCER</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ДИАГНОСТИКА И ЛЕЧЕНИЕ ОПУХОЛЕЙ МОЧЕПОЛОВОЙ СИСТЕМЫ. Рак мочевого пузыря</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Prognostic role of Ki-67 expression in determination of risk of non-muscle invasive bladder cancer recurrence</article-title><trans-title-group xml:lang="ru"><trans-title>Прогностическая роль экспрессии Ki-67 в определении риска развития рецидива мышечно-неинвазивного рака мочевого пузыря</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kovylina</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Тупикина</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>Контакты: Наталия Владимировна Тупикина, кафедра урологии </p><p>127473 Москва, ул. Делегатская, 20, стр. 1 </p></bio><email>tatatu@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Prilepskaya</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Прилепская</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>Елена Анатольевна Прилепская, кафедра урологии</p></bio><email>prilepskayae@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tupikina</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Ковылина</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>Марта Владимировна Ковылина, кафедра урологии</p></bio><email>dr.kovylina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Reva</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Рева</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>Игорь Анатольевич Рева </p></bio><email>tatatu@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">A.I. Evdokimov Moscow State University of Medicine and Dentistry</institution></aff><aff><institution xml:lang="ru">Московский государственный медико-стоматологический университет им. А.И. Евдокимова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-03-30" publication-format="electronic"><day>30</day><month>03</month><year>2017</year></pub-date><volume>13</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>67</fpage><lpage>73</lpage><history><date date-type="received" iso-8601-date="2016-11-02"><day>02</day><month>11</month><year>2016</year></date><date date-type="accepted" iso-8601-date="2016-12-05"><day>05</day><month>12</month><year>2016</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://oncourology.abvpress.ru/oncur/article/view/627">https://oncourology.abvpress.ru/oncur/article/view/627</self-uri><abstract xml:lang="en"><p><bold>Introduction</bold>. To increase accuracy of disease prognosis in patients with bladder cancer we propose determination of expression level of several tumor markers. Objective is evaluation of prognostic significance of Ki-67 expression level in risk of non-muscle invasive bladder cancer recurrence.</p><p><bold>Materials and methods</bold>. To perform immunohistochemistry analysis of Ki-67 we used surgery material of 83 patients who underwent primary transurethral bladder resection due to non-muscle invasive cancer. We performed an analysis of correlation between Ki-67 expression level in malignant tissue removed by transurethral resection and characteristics of tumor development. We evaluated the role of Ki-67 in stratification of recurrence risk by comparing the level of Ki-67 antigen expression in patients with recurrent non-muscle invasive bladder cancer and in relapse-free patients. We present evaluation of sensitivity, specificity, and prognostic value of quantitative determination of Ki-67 expression level in relation to non-muscle invasive bladder cancer recurrence.</p><p><bold>Results</bold>. During the follow-up period, 41 cases of non-muscle invasive bladder tumor recurrence were observed. Quantitative value of the Ki-67 marker correlated with tumor differentiation grade G, malignancy grade, invasion into submucosal and muscle layers, presence of primary process, and tumor recurrence. In comparison with relapse-free patients, a significantly higher level of Ki-67 expression was observed in patients with cancer recurrence (р = 0.0035). We have determined a threshold quantitative value of Ki-67 (48 %) indicating disease recurrence. Presence of a threshold value of the Ki-67 marker showed moderate sensitivity level (less than 71 %) with relatively low specificity level (57 %). However prognostic level wasn’t high (between 63 and 65 %).</p><p><bold>Conclusion</bold>. In patients with recurrent non-muscle invasive bladder cancer an elevated level of Ki-67 expression was observed in comparison with relapse-free patients (test sensitivity was 70.7 %). Obviously, determination of molecular biomarkers, Ki-67 in particular, can potentially help distinguish highly malignant tumors with high progression and recurrence risk, which can significantly improve treatment results for these patients. However, this problem requires further research. </p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение</bold>. Для повышения точности прогноза заболевания у пациентов, страдающих раком мочевого пузыря, было предложено определение уровня экспрессии ряда молекулярных онкомаркеров.</p><p><bold>Цель исследования</bold> – оценка прогностической значимости экспрессии Ki-67 для риска развития рецидива мышечно-неинвазивного рака мочевого пузыря. Материалы и методы. Для проведения иммуногистохимического исследования с онкопротеином Ki-67 был использован операционный материал 83 пациентов, перенесших первичную трансуретральную резекцию мочевого пузыря по поводу мышечно-неинвазивного рака. Выполнен корреляционный анализ между уровнем экспрессии Ki-67 в злокачественной ткани, удаленной в ходе трансуретральной резекции мочевого пузыря, и характеристиками опухолевого процесса. Проведена оценка роли Ki-67 в стратификации риска развития рецидива у больных путем сравнения уровней экспрессии антигена Ki-67 в группах пациентов с рецидивом мышечно-неинвазивного рака мочевого пузыря и его отсутствием. Дана оценка чувствительности, специфичности и прогностической ценности количественного определения уровня экспрессии Ki-67 в отношении развития рецидива мышечнонеинвазивного рака мочевого пузыря.</p><p><bold>Результаты</bold>. За период наблюдения был зарегистрирован 41 случай рецидива мышечно-неинвазивной опухоли мочевого пузыря. Количественное значение маркера Ki-67 коррелировало со степенью дифференцировки опухоли G, степенью злокачественности, инвазией в подслизистый и мышечный слои, расстоянием до инвазии опухоли, наличием первичного процесса и рецидива опухоли. Был отмечен достоверно более высокий уровень экспрессии Ki-67 у больных с рецидивом опухоли по сравнению с группой пациентов без рецидива (р = 0,0035), на основании чего выделено пороговое количественное значение маркера Ki-67 (48 %), свидетельствующее о развитии рецидива заболевания. Наличие порогового значения маркера Ki-67 показало умеренный уровень чувствительности (до 71 %) с относительно невысоким уровнем специфичности (57 %). Однако высокого значения прогностической ценности не отмечено (в пределах 63–65 %).</p><p><bold>Заключение.</bold> У больных с рецидивом мышечно-неинвазивного рака мочевого пузыря отмечается повышенная экспрессия антигена Ki-67 по сравнению с пациентами без рецидива заболевания (чувствительность теста составила 70,7 %). Очевидно, что определение молекулярныx биомаркеров, в частности Ki-67, может потенциально помочь в выделении группы опухолей высокой степени злокачественности с высоким риском прогрессирования и рецидивирования, что может значительно улучшить результаты лечения таких пациентов. Однако этот вопрос требует дальнейшего тщательного изучения. </p></trans-abstract><kwd-group xml:lang="en"><kwd>non-muscle invasive bladder cancer</kwd><kwd>molecular marker</kwd><kwd>relapse</kwd><kwd>prognosis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>мышечно-неинвазивный рак мочевого пузыря</kwd><kwd>молекулярные маркеры</kwd><kwd>экспрессия онкомаркеров</kwd><kwd>экспрессия Ki-67</kwd><kwd>первичная ТУР мочевого пузыря</kwd><kwd>рецидив</kwd><kwd>стратификация риска</kwd><kwd>прогноз</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Президент РФ (грант МК-6070.2015.7)</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1.	Ferlay J., Bray F., Forman D. et al. Cancer incidence and mortality worldwide. IARC Cancer Base No. 10, 2010. International Agency for Research on Cancer: Lyon, France. 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