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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">oncotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский онкологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian journal of oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-4861</issn><issn pub-type="epub">2312-3168</issn><publisher><publisher-name>Tomsk National Research Medical Сепtеr of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21294/1814-4861-2021-20-6-55-68</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-1985</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>ЛАБОРАТОРНЫЕ И ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LABORATORY AND EXPERIMENTAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Внутриопухолевая морфологическая и молекулярно-генетическая гетерогенность в астроцитомах разной степени злокачественности в материале от первой операции</article-title><trans-title-group xml:lang="en"><trans-title>Intratumor morphologic and molecular genetic heterogeneity in astrocytomas of different grade of malignancy in the material from the first operation</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>Мацко</surname><given-names>Д. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Matsko</surname><given-names>D. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p> доктор медицинских наук, профессор </p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68А</p><p>Россия, 199034, г. Санкт-Петербург, Университетская наб., 7/92</p><p>Россия, 195271, г. Санкт-Петербург, Кондратьевский пр., 72А</p><p>Россия, 191014, г. Санкт-Петербург, ул. Маяковского, 12</p></bio><bio xml:lang="en"><p> MD, DSc, Professor </p><p>68a, Leningradskaya Street, 197758, St. Petersburg, Pesochny, Russia</p><p>7/9, University Embankment, 199034, St. Petersburg, Russia</p><p>72а, Kondratyevsky Avenue, 195271, St. Petersburg, Russia</p><p>12, Mayakovskogo Street, 191014, St.Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1564-0943</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мацко</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Matsko</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> доктор медицинский наук, старший научный сотрудник</p><p>SPIN-код: 2014-2268. AuthorID (РИНЦ): 918790. Researcher ID (WOS): W-9626-2018</p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68А</p><p>Россия, 199034, г. Санкт-Петербург, Университетская наб., 7/92</p><p>Россия, 195271, г. Санкт-Петербург, Кондратьевский пр., 72А</p></bio><bio xml:lang="en"><p> MD, DSc, Senior Researcher</p><p>SPIN-код: 2014-2268. AuthorID (РИНЦ): 918790 Researcher ID (WOS): W-9626-2018 </p><p>68a, Leningradskaya Street, 197758, St. Petersburg, Pesochny, Russia</p><p>7/9, University Embankment, 199034, St. Petersburg, Russia</p><p>72а, Kondratyevsky Avenue, 195271, St. Petersburg, Russia</p></bio><email xlink:type="simple">marinamatsko@mail.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/0000-0001-9970-5841</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бакшеева</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Baksheeva</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач-нейрохирург</p><p>Россия, 191036, г. Санкт-Петербург, Лиговский пр., 8</p></bio><bio xml:lang="en"><p> MD, Neurosurgeon</p><p>8, Ligovsky Avenue, 191036, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4529-7891</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Имянитов</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Imyanitov</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, член-корреспондент РАН, руководитель научного отдела биологии опухолевого роста</p><p>SPIN-код: 1909-7323. Author ID (Scopus): 7003644486 </p><p>Россия, 191015, г. Санкт-Петербург, ул. Кирочная, 41</p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p><p>Россия, 194100, г. Санкт-Петербург, ул. Литовская, 2</p></bio><bio xml:lang="en"><p> MD, DSc, Professor, Corresponding Member of Russian Academy of Sciences, Department of Biology of Tumor Growth</p><p>Author ID (Scopus): 7003644486 </p><p>41, Kirochnaya Street, 191015, St. Petersburg, Russia</p><p>68, Leningradskaya Street, 197758, Pesochny, St. Petersburg, Russia</p><p>2, Litovskaya Street, 194100, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8343-4917</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Улитин</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ulitin</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p> доктор медицинских наук, профессор; профессор кафедры нейрохирургии им. проф. А.Л. Поленова  </p><p>Россия, 191014, г. Санкт-Петербург, ул. Маяковского, 12 </p><p>Россия, 191015, г. Санкт-Петербург, ул. Кирочная, 41</p></bio><bio xml:lang="en"><p> MD, DSc, Professor; Professor of the Department of Neurosurgery named after Professor A.L Polenov </p><p>12, Mayakovskogo Street, 191014, St.Petersburg, Russia</p><p>41, Kirochnaya Street, 191015, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4807-7915</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Моисеенко</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Moiseenko</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, директор</p><p>SPIN-код: 8184-2980. AuthorID (РИНЦ): 602994</p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68А</p><p>Россия, 195271, г. Санкт-Петербург, Кондратьевский пр., 72А</p></bio><bio xml:lang="en"><p> MD, DSc, Professor, Director </p><p>68a, Leningradskaya Street, 197758, St. Petersburg, Pesochny, Russia</p><p>72а, Kondratyevsky Avenue, 195271, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2113-0053</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шелехова</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shelekhova</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор кафедры патологической анатомии факультета дополнительного профессионального образования</p><p>Researcher ID (WOS): O-5495-2015</p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68А</p><p>Россия, 195271, г. Санкт-Петербург, Кондратьевский пр., 72А</p></bio><bio xml:lang="en"><p>MD, DSc, Professor of the Department of Pathological Anatomy of the Faculty of Additional Professional Education</p><p>Researcher ID (WOS): O-5495-2015 </p><p>68a, Leningradskaya Street, 197758, St. Petersburg, Pesochny, Russia</p><p>72а, Kondratyevsky Avenue, 195271, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волков</surname><given-names>Н. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkov</surname><given-names>N. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p> кандидат медицинских наук, начальник отделений химиотерапевтического и радиохирургического профиля</p><p>SPIN-код: 1605-0256. AuthorID (РИНЦ): 883973 </p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68А</p><p>Россия, 195271, г. Санкт-Петербург, Кондратьевский пр., 72А</p></bio><bio xml:lang="en"><p> MD, PhD, Head of Chemotherapy and Radiosurgery Department </p><p>68a, Leningradskaya Street, 197758, St. Petersburg, Pesochny, Russia</p><p>72а, Kondratyevsky Avenue, 195271, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5454-5186</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иевлева</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ievleva</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, старший научный сотрудник отдела биологии опухолевого роста</p><p>Researcher ID (WOS): P-8305-2016. Author ID (Scopus): 6506417697 </p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68</p><p>Россия, 194100, г. Санкт-Петербург, ул. Литовская, 2</p></bio><bio xml:lang="en"><p> PhD, Senior Researcher, Department of Biology of Tumor Growth</p><p>Researcher ID (WOS): P-8305-2016. Author ID (Scopus): 6506417697 </p><p>68, Leningradskaya Street, 197758, Pesochny, St. Petersburg, Russia</p><p>2, Litovskaya Street, 194100, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-7"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0157-5952</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюрин</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tiurin</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p> лаборант-исследователь научной лаборатории молекулярной онкологии</p><p>Россия, 197758, г. Санкт-Петербург, пос. Песочный, ул. Ленинградская, 68 </p></bio><bio xml:lang="en"><p> Laboratory Assistant – Researcher, Laboratory of Molecular Oncology </p><p>68, Leningradskaya Street, 197758, Pesochny, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-8"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3284-9688</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Скляр</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sklyar</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p> младший научный сотрудник  </p><p>Россия, 191014, г. Санкт-Петербург, ул. Маяковского, 12 </p></bio><bio xml:lang="en"><p> MD, Research Fellow, Neurosurgeon  </p><p>12, Mayakovskogo Street, 191014, St.Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0307-7842</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зрелов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zrelov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, научный сотрудник, врач-нейрохирург  </p><p>Россия, 191014, г. Санкт-Петербург, ул. Маяковского, 12 </p></bio><bio xml:lang="en"><p> MD, PhD, Researcher, Neurosurgeon  </p><p>12, Mayakovskogo Street, 191014, St.Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-9"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1998-042X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Морозова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p> студентка медицинского факультета </p><p>Россия, 199034, г. Санкт-Петербург, Университетская наб., 7/92</p></bio><bio xml:lang="en"><p> student of the Medical Faculty </p><p>7/9, University Embankment, 199034, St. Petersburg, Russia</p></bio><xref ref-type="aff" rid="aff-10"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГБУЗ «Санкт-Петербургский клинический научно-практический центр специализированных видов медицинской помощи (онкологический)»;&#13;
ФГБОУ ВПО «Санкт-Петербургский государственный университет»;&#13;
ЧОУ ВО «Санкт-Петербургский медико-социальный институт»;&#13;
«РНХИ им. проф. А.Л. Поленова» – филиал ФГБУ «НМИЦ им. В.А. Алмазова» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg Clinical Scientific And Practical Center For Specialised Types Of Medical Care (Oncological);&#13;
Saint-Petersburg State University;&#13;
Sankt-Petersburg Medico-Social Institute;&#13;
Polenov Russian Neurosurgical Institute – The Branch Of Almazov NMRC</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ГБУЗ «Санкт-Петербургский клинический научно-практический центр специализированных видов медицинской помощи (онкологический)»;&#13;
ФГБОУ ВПО «Санкт-Петербургский государственный университет»;&#13;
ЧОУ ВО «Санкт-Петербургский медико-социальный институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg Clinical Scientific And Practical Center For Specialised Types Of Medical Care (Oncological);&#13;
Saint-Petersburg State University;&#13;
Sankt-Petersburg Medico-Social Institute</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>СПБ ГБУЗ «Детский городской многопрофильный центр высоких медицинских технологий им. К.А. Раухфуса»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Committee On Public Health Of The Government Of St. Petersburg Rauhfus Children's Clinical Center</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ГБОУ ВПО «Северо-Западный государственный медицинский университет им. И.И. Мечникова»&#13;
Минздрава России;&#13;
ФГБУ «НМИЦ онкологии им. Н.Н. Петрова» Минздрава России;&#13;
ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North-Western State Medical University Named After I.I. Mechnikov;&#13;
N.N. Petrov National Medical Research Center Of Oncology;&#13;
St. Petersburg State Pediatric Medical University Of Healthcare Of The Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>«РНХИ им. проф. А.Л. Поленова» – филиал ФГБУ «НМИЦ им. В.А. Алмазова» Минздрава России;&#13;
ГБОУ ВПО «Северо-Западный государственный медицинский университет им. И.И. Мечникова» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Polenov Russian Neurosurgical Institute – The Branch Of Almazov NMRC;&#13;
North-Western State Medical University Named After I.I. Mechnikov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>ГБУЗ «Санкт-Петербургский клинический научно-практический центр специализированных видов медицинской помощи (онкологический)»;&#13;
ЧОУ ВО «Санкт-Петербургский медико-социальный институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg Clinical Scientific And Practical Center For Specialised Types Of Medical Care (Oncological);&#13;
Sankt-Petersburg Medico-Social Institute</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ онкологии им. Н.Н. Петрова» Минздрава России;&#13;
ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N. Petrov National Medical Research Center Of Oncology;&#13;
St. Petersburg State Pediatric Medical University Of Healthcare Of The Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-8"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ онкологии им. Н.Н. Петрова» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N. Petrov National Medical Research Center Of Oncology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-9"><aff xml:lang="ru"><institution>«РНХИ им. проф. А.Л. Поленова» – филиал ФГБУ «НМИЦ им. В.А. Алмазова» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Polenov Russian Neurosurgical Institute – The Branch Of Almazov NMRC</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-10"><aff xml:lang="ru"><institution>ФГБОУ ВПО «Санкт-Петербургский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>11</day><month>01</month><year>2022</year></pub-date><volume>20</volume><issue>6</issue><fpage>55</fpage><lpage>68</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мацко Д.Е., Мацко М.В., Бакшеева А.О., Имянитов Е.Н., Улитин А.Ю., Моисеенко В.М., Шелехова К.В., Волков Н.М., Иевлева А.Г., Тюрин В.И., Скляр С.С., Зрелов А.А., Морозова А.С., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Мацко Д.Е., Мацко М.В., Бакшеева А.О., Имянитов Е.Н., Улитин А.Ю., Моисеенко В.М., Шелехова К.В., Волков Н.М., Иевлева А.Г., Тюрин В.И., Скляр С.С., Зрелов А.А., Морозова А.С.</copyright-holder><copyright-holder xml:lang="en">Matsko D.E., Matsko M.V., Baksheeva A.O., Imyanitov E.N., Ulitin A.Y., Moiseenko V.M., Shelekhova K.V., Volkov N.M., Ievleva A.G., Tiurin V.I., Sklyar S.S., Zrelov A.A., Morozova A.S.</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.siboncoj.ru/jour/article/view/1985">https://www.siboncoj.ru/jour/article/view/1985</self-uri><abstract><p>Введение. Внутриопухолевая гетерогенность является одним из ключевых факторов неблагоприятного прогноза в лечении пациентов со всеми онкологическими заболеваниями. Астроцитарные новообразования неизбежно рецидивируют с приобретением резистентности к дальнейшей терапии. Одна из возможных причин – это гетерогенность опухоли. Цель исследования – определить наличие морфологической и молекулярно-генетической гетерогенности в первичной глиобластоме, анапластической астроцитоме и диффузной астроцитоме. Материал и методы. Проведено проспективное исследование с анализом морфологических (n=22) и молекулярно-генетических характеристик (n=8) впервые прооперированных пациентов с глиобластомой giV (ГБ), анапластической астроцитомой giii (АА) и диффузной астроцитомой gii (ДА) в возрасте от 18 лет и старше. Забор образцов опухолевой ткани производился из 5 равноудаленных точек одного опухолевого узла при субтотальном и близко к тотальному удалении. Были получены 110 фрагментов опухолевой ткани. Гистологический диагноз ставился в каждом образце опухоли согласно классификации ВОЗ опухолей ЦНС (2007/2016). Относительная экспрессия мРНК генов: MGMT, C-kit, TOP2α, PDGFR-α, ERCC1, VEGF и мутации в генах IDH1 и IDH2 определялись при помощи ПЦР-методик. Результаты. Морфологическая внутриопухолевая гетерогенность была выявлена в 72,7 % случаев (16/22). В первичной ГБ гетерогенность наблюдалась в 68,8 % (11/16), в АА – в 80 % (4/5) и в единственном случае ДА. В 50 % случаев опухоль была гетерогенна в 3 и более фрагментах из пяти. Морфологическая гетерогенность представляла собой сочетание в одном опухолевом узле морфологических признаков астроцитом разной степени злокачественности – от ДА до ГБ. Внутриопухолевая молекулярно-генетическая гетерогенность была изучена у 8 пациентов в 48 экспрессионных анализах генов MGMT, C-kit, TOP2α, PDGFR-α, ERCC1, VEGF и наблюдалась в 41,7 % (20/48) случаев. Заключение. Присутствие внутриопухолевой гетерогенности следует учитывать во время операции для предоставления оптимального числа фрагментов опухоли на гистологическое и молекулярно-генетическое исследование, что имеет решающее значение для адекватной оценки прогноза и планирования лечения.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. Intratumor heterogeneity is one of the key reasons for unfavourable prognosis in malignant tumors. Astrocytic tumors are known to develop therapy resistance inevitably during the course of disease. One of possible reason is tumor heterogeneity. Purpose. The aim of this work was to assess the intratumor morphologic and molecular heterogeneity in diffuse astrocytoma, anaplastic astrocytomas and primary glioblastomas. Material and methods. We conducted morphologic (n=22) and molecular-genetic (n=8) analysis of surgical specimens obtained from primarily operated glioblastoma giv (gb), anaplastic astrocytomas giii (aa) and diffuse astrocytoma gii (da) patients aged 18 years and older in whom total or subtotal tumor resection was performed. Tissue sampling for the analysis was performed from 5 equidistant areas of each tumor. Morphologic diagnosis was established according to who classification of central nervous system tumors (2007/2016). Mgmt, c-kit, top2a, pdgfr-α, ercc1, vegf genes mrnaexpression was assessed by rt-pcr. Idh1 and idh2 mutational status was evaluated by allele-specific pcr. Results. Morphologic heterogeneity was evident in 72,7 % tumors (16/22) overall. Heterogeneity was observed in 68,8 % (11/16) of gb, 80 % (4/5) of aa and in the only case of da. In 50 % of cases at least 3 different morphologic variants were seen in different areas of the tumor. This morphologic heterogeneity presented as the combination of different grades of anaplasia (gii – giv) in one tumor. Molecular profile was assessed in 48 expression analysis of genes: mgmt, c-kit, top2a, pdgfr-α, ercc1, vegf from 8 patients. Intratumoral molecular heterogeneity was revealed in 41,7 % of cases (20/48). Conclusion. The presence of intratumoral heterogeneity should be taken into account during surgery for adequate tumor sampling for histologic and molecular analysis which is critical for proper assessment of prognosis and following treatment planning.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>глиобластома</kwd><kwd>анапластическая астроцитома</kwd><kwd>внутриопухолевая гетерогенность</kwd><kwd>морфологическая гетерогенность</kwd><kwd>молекулярно-генетическая гетерогенность</kwd><kwd>экспрессия генов</kwd><kwd>мутации в генах IDH1 и IDH2</kwd></kwd-group><kwd-group xml:lang="en"><kwd>glioblastoma</kwd><kwd>astrocytoma</kwd><kwd>intratumor heterogeneity</kwd><kwd>morphologic heterogeneity</kwd><kwd>moleculargenetic heterogeneity</kwd><kwd>gene expression</kwd><kwd>IDH1 and IDH2 mutations</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта РФФИ 18-315-00437</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Virchow R. 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