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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2018-62-3-322-328</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-524</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>МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MEDICINE</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ МЕТИЛИРОВАНИЯ ГЕНА р16 НА РИСК ПРОГРЕССИРОВАНИЯ РАКА  МОЧЕВОГО ПУЗЫРЯ БЕЗ МЫШЕЧНОЙ ИНВАЗИИ</article-title><trans-title-group xml:lang="en"><trans-title>INFLUENCE OF P16 GENE METHYLATION ON THE RISK OF PROGRESSION  OF NON-MUSCLE INVASIVE BLADDER CANCER</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смаль</surname><given-names>М. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Smal</surname><given-names>M. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смаль Маргарита Петровна – канд. биол. наук, ст. науч. сотрудник.</p><p>ул. Академическая, 27, 220072, Минск.</p></bio><bio xml:lang="en"><p>Smal Marharyta Petrovna – Ph. D. (Biology), Senior researcher. </p><p>27, Akademicheskaya Str., 220072, Minsk.</p></bio><email xlink:type="simple">marharyta.smal@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никитченко</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitchenko</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Никитченко Наталья Васильевна – науч. сотрудник. </p><p>ул. Академическая, 27, 220072, Минск.</p></bio><bio xml:lang="en"><p>Nikitchenko Nataliya Vasilievna – Researcher. </p><p>27, Akademicheskaya Str., 220072, Minsk.</p></bio><email xlink:type="simple">N.Nikitchenko@igc.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ролевич</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Rolevich</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ролевич Александр Игоревич – канд. мед. наук, вед. науч. сотрудник. </p><p>223040, аг. Лесной, Минский р-н, Минская обл.</p></bio><bio xml:lang="en"><p>Rolevich Alexander Igorevich – Ph. D. (Medicine), Leading researcher.</p><p>223040, Lesnoy, Minsk region, Minsk district.</p></bio><email xlink:type="simple">alexander.rolevich@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Набебина</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Nabebina</surname><given-names>T. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Набебина Татьяна Ивановна – канд. мед. наук, врач.</p><p>223040, аг. Лесной, Минский р-н, Минская обл.</p></bio><bio xml:lang="en"><p>Nabebina Tatiana Ivanovna – Ph. D. (Medicine), Doctor.  </p><p>223040, Lesnoy, Minsk region, Minsk district.</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Красный</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krasny</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Красный Сергей Анатольевич – член-корреспондент, д-р мед. наук, профессор, заместитель директора. </p><p>223040, аг. Лесной, Минский р-н, Минская обл.</p></bio><bio xml:lang="en"><p>Krasny Sergey Anatolievich – Corresponding Member, D. Sc. (Medicine), Professor, Deputy Director. </p><p>223040, Lesnoy, Minsk region, Minsk district.</p></bio><email xlink:type="simple">sergeykrasny@tut.by</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гончарова</surname><given-names>Р. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Goncharova</surname><given-names>R. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гончарова Роза Иосифовна – д-р биол. наук, профессор, заведующий лабораторией. </p><p>ул. Академическая, 27, 220072, Минск.</p></bio><bio xml:lang="en"><p>Goncharova Roza Iosifovna – D. Sc. (Biology), Professor, Head of the Laboratory. </p><p>27, Akademicheskaya Str., 220072, Minsk.</p></bio><email xlink:type="simple">R.Goncharova@igc.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт генетики и цитологии Национальной академии наук Беларуси.</institution></aff><aff xml:lang="en"><institution>Institute of Genetics and Cytology of the National Academy of Scien ces of Belarus.</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт генетики и цитологии Национальной академии наук Беларуси.</institution></aff><aff xml:lang="en"><institution>Institute of Genetics and Cytology of the National Academy of Sciences of Belarus.</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Республиканский научно-практический центр онкологии и медицинской радиологии  им. Н. Н. Александрова.</institution></aff><aff xml:lang="en"><institution>N. N. Alexandrov National Cancer Center of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Республиканский научно-практический центр онкологии и медицинской радиологии  им. Н. Н. Александрова.</institution></aff><aff xml:lang="en"><institution>N. N. Alexand rov National Cancer Centre of Belarus.</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>29</day><month>06</month><year>2018</year></pub-date><volume>62</volume><issue>3</issue><fpage>322</fpage><lpage>328</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смаль М.П., Никитченко Н.В., Ролевич А.И., Набебина Т.И., Красный С.А., Гончарова Р.И., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Смаль М.П., Никитченко Н.В., Ролевич А.И., Набебина Т.И., Красный С.А., Гончарова Р.И.</copyright-holder><copyright-holder xml:lang="en">Smal M.P., Nikitchenko N.V., Rolevich A.I., Nabebina T.I., Krasny S.A., Goncharova R.I.</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://doklady.belnauka.by/jour/article/view/524">https://doklady.belnauka.by/jour/article/view/524</self-uri><abstract><p>Для более точного предсказания поведения опухоли и индивидуализации лечебного подхода необходима разработка новых методов прогноза клинического течения рака мочевого пузыря (РМП). В качестве перспективных прогностических маркеров рассматриваются мутационные и эпигенетические изменения генов, играющих ключевую роль в поддержании клеточного гомеостаза. В настоящем исследовании проведена оценка влияния метилирования промоторной области гена р16 на риск рецидивирования, прогрессирования и неблагоприятного исхода заболевания на примере выборки из 158 пациентов с РМП. Эпигенетические изменения исследованного гена выявлены в 11,4 % уротелиальных карцином и не зависели от клинико-морфологических характеристик. Вместе  с тем в подгруппе пациентов с немышечно-инвазивными опухолями аномальное метилирование р16 статистически значимо связано с курением, а в подгруппе пациентов с мышечно-инвазивным РМП – с низкой степенью дифференцировки опухоли. В многофакторном регрессионном анализе пропорциональных рисков Кокса установлено, что гиперметилирование гена р16 является независимым предиктором прогрессирования РМП без мышечной инвазии (отношение рисков 6,84; 95 % ДИ 1,6–29,9; р = 0,011). Применение данных об эпигенетической изменчивости гена р16 позволит повысить точность прогноза клинического течения рака мочевого пузыря и подобрать адекватную тактику лечения.</p></abstract><trans-abstract xml:lang="en"><p>To accurately predict the tumor behavior and individualize the treatment approach, new methods for bladder cancer (BC) prognosis are required. The most promising prognostic markers are the mutational and epigenetic changes of genes involved in maintaining cellular homeostasis. In the present study, we evaluated the influence of p16 promoter hypermethylation on the risk of recurrence, progression and disease outcome in the group of 158 BC patients. p16 epigenetic changes were found in 11.4 % of urothelial carcinomas and did not depend on clinicоmorphological characteristics. However, in the subgroup of patients with non-muscle invasive tumors, p16 abnormal methylation was significantly associated with smoking, and in the subgroup of patients with muscle-invasive BC, it was linked to a high tumor grade (G3). In the multivariate Cox regression analysis, p16 promoter hypermethylation was an independent predictor for bladder cancer progression (HR 6.84; 95 % CI 1.6–29.9; р = 0.011). The use of the data on the p16 methylation status may improve the accuracy of prognosis of the bladder cancer clinical course and the selection of appropriate treatment strategy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>рак мочевого пузыря</kwd><kwd>эпигенетические изменения</kwd><kwd>метилирование</kwd><kwd>p16</kwd><kwd>прогностическое значение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>bladder cancer</kwd><kwd>epigenetic changes</kwd><kwd>methylation</kwd><kwd>p16</kwd><kwd>prognostic value</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">Океанов, А. Е. Статистика онкологических заболеваний в Республике Беларусь (2004–2013) / А. Е. Океанов, П. И. Моисеев, Л. Ф. Левин; под ред. О. Г. Суконко. – Минск: РНПЦ ОМР, 2014. – 382 с.</mixed-citation><mixed-citation xml:lang="en">Okeanov A. E., Moiseev P. I., Levin L. F. 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