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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">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">609</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2022-21-4-105-110</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL OBSERVATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en"><italic>FOXO1</italic>-negative alveolar rhabdomyosarcoma: a case report of a rare tumor</article-title><trans-title-group xml:lang="ru"><trans-title><italic>FOXO1</italic>-негативная альвеолярная рабдомиосаркома: описание случая редкой опухоли</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belobokova</surname><given-names>V. D.</given-names></name><name xml:lang="ru"><surname>Белобокова</surname><given-names>В. Д.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><bold>Victoria D. Belobokova</bold>, a researcher at the Laboratory of Molecular Genetic Research</p><p><italic>Borovlyany, Minsk Region</italic></p></bio><bio xml:lang="ru"><p><bold>Белобокова Виктория Дмитриевна</bold>, научный сотрудник лаборатории молекулярно-генетических исследований</p><p><italic>Минский район, д. Боровляны</italic></p></bio><email>belobokova.victoria@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kalchenko</surname><given-names>K. O.</given-names></name><name xml:lang="ru"><surname>Кальченко</surname><given-names>К. О.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>Borovlyany, Minsk Region</italic></p></bio><bio xml:lang="ru"><p><italic>Минский район, д. Боровляны</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7134-8923</contrib-id><name-alternatives><name xml:lang="en"><surname>Mikhaleuskaya</surname><given-names>T. M.</given-names></name><name xml:lang="ru"><surname>Михалевская</surname><given-names>Т. М.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>Borovlyany, Minsk Region</italic></p></bio><bio xml:lang="ru"><p><italic>Минский район, д. Боровляны</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kochubinsky</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Кочубинский</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>Borovlyany, Minsk Region</italic></p></bio><bio xml:lang="ru"><p><italic>Минский район, д. Боровляны</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belevtsev</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Белевцев</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>Borovlyany, Minsk Region</italic></p></bio><bio xml:lang="ru"><p><italic>Минский район, д. Боровляны</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2071-8143</contrib-id><name-alternatives><name xml:lang="en"><surname>Kisialeu</surname><given-names>L. P.</given-names></name><name xml:lang="ru"><surname>Киселев</surname><given-names>Л. П.</given-names></name></name-alternatives><address><country country="BY">Belarus</country></address><bio xml:lang="en"><p><italic>Borovlyany, Minsk Region</italic></p></bio><bio xml:lang="ru"><p><italic>Минский район, д. Боровляны</italic></p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Belarusian Research Center for Pediatric Oncology, Hematology and Immunology</institution></aff><aff><institution xml:lang="ru">ГУ «Республиканский научно-практический центр детской онкологии, гематологии и иммунологии»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-12-26" publication-format="electronic"><day>26</day><month>12</month><year>2022</year></pub-date><volume>21</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>105</fpage><lpage>110</lpage><history><date date-type="received" iso-8601-date="2022-05-20"><day>20</day><month>05</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-09-07"><day>07</day><month>09</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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://hemoncim.com/jour/article/view/609">https://hemoncim.com/jour/article/view/609</self-uri><abstract xml:lang="en"><p>The results of modern research confirm the importance of an accurate assessment of the molecular pathogenesis of soft tissue tumors. The use of next-generation sequencing can be effective both for finding targets for targeted therapy and predicting aggressive behavior of tumors, and for clarifying the diagnosis in non-standard cases. Here, we report a case of FOXO1-negative alveolar rhabdomyosarcoma in a 3-year-old child. To verify the diagnosis of this patient, we used high-throughput sequencing. Using the Trusight Tumor 170 gene panel (Illumina, USA), we carried out molecular genetic testing of the patient’s tumor sample and discovered a rare NZD1-FGFR4 translocation that had not been previously reported to occur in alveolar rhabdomyosarcoma. The patient’s parents gave their consent to the use of their child's data, including photographs, for research purposes and in publications.</p></abstract><trans-abstract xml:lang="ru"><p>Ряд актуальных публикаций подтверждают важность точной молекулярно-генетической диагностики опухолей мягких тканей. Метод секвенирования следующего поколения может быть эффективным как для поиска мишеней таргетной терапии, прогнозирования агрессивного поведения новообразования, так и для уточнения диагноза саркомы в нестандартных случаях. В настоящем исследовании представлен случай FOXO1-негативной альвеолярной рабдомиосаркомы у 3-летнего ребенка. Для верификации диагноза был применен метод высокопроизводительного секвенирования. Проведена молекулярно-генетическая диагностика образца опухолевой ткани с использованием панели генов TruSight Tumor 170 (Illumina, США). В результате исследования обнаружена редкая транслокация NZD1-FGFR4, ранее не описанная в литературе при альвеолярных рабдомиосаркомах. Родители пациентки дали согласие на использование информации, в том числе фотографий ребенка, в научных исследованиях и публикациях. </p></trans-abstract><kwd-group xml:lang="en"><kwd>alveolar rhabdomyosarcoma</kwd><kwd>NZD1-FGFR4 translocation</kwd><kwd>sequencing</kwd><kwd>FOXO1-negative alveolar rhabdomyosarcoma</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>альвеолярная рабдомиосаркома</kwd><kwd>транслокация NZD1-FGFR4</kwd><kwd>секвенирование</kwd><kwd>FOXO1-негативная альвеолярная рабдомиосаркома</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Qualman S., Lynch J., Bridge J., Parham D., Teot L., Meyer W., Pappo A. Prevalence and clinical impact of anaplasia in childhood rhabdomyosarcoma: a report from the Soft Tissue Sarcoma Committee of the Children's Oncology Group. 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