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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Genetics</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0016-6758</issn><issn publication-format="electronic">3034-5103</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">666994</article-id><article-id pub-id-type="doi">10.31857/S0016675824020087</article-id><article-id pub-id-type="edn">DQQBCD</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>ГЕНЕТИКА ЧЕЛОВЕКА</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Role of molecular genetic factors in formation of the clinical type of neurofibromatosis type 2</article-title><trans-title-group xml:lang="ru"><trans-title>Роль молекулярно-генетических факторов в формировании клинического типа у пациентов с нейрофиброматозом 2-го типа</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karandasheva</surname><given-names>K. O.</given-names></name><name xml:lang="ru"><surname>Карандашева</surname><given-names>К. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Makashova</surname><given-names>E. S.</given-names></name><name xml:lang="ru"><surname>Макашова</surname><given-names>Е. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ageeva</surname><given-names>F. A.</given-names></name><name xml:lang="ru"><surname>Агеева</surname><given-names>Ф. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Anoshkin</surname><given-names>K. I.</given-names></name><name xml:lang="ru"><surname>Аношкин</surname><given-names>К. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sparber</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Спарбер</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Borovikov</surname><given-names>A. O.</given-names></name><name xml:lang="ru"><surname>Боровиков</surname><given-names>А. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vasiluev</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Васильев</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pashchenko</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Пащенко</surname><given-names>М. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tanas</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Танас</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Strelnikov</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Стрельников</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vstrel@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Centre for Medical Genetics</institution></aff><aff><institution xml:lang="ru">Медико-генетический научный центр им. академика Н.П. Бочкова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Burdenko National Medical Research Center of Neurosurgery</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр нейрохирургии им. Н.Н. Бурденко</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Loginov Moscow Clinical Scientific Center</institution></aff><aff><institution xml:lang="ru">Московский клинический научно-практический центр им. А.С. Логинова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-02-15" publication-format="electronic"><day>15</day><month>02</month><year>2024</year></pub-date><volume>60</volume><issue>2</issue><fpage>78</fpage><lpage>88</lpage><history><date date-type="received" iso-8601-date="2025-02-26"><day>26</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0016-6758/article/view/666994">https://transsyst.ru/0016-6758/article/view/666994</self-uri><abstract xml:lang="en"><p>Neurofibromatosis type 2 is a hereditary disease with predisposition to the development of multiple tumors of the central and peripheral nervous system. The disease is characterized by significant variability in the clinical picture; the number of neoplasms, their location and growth rate largely determine the severity of the course. However, assessing the rate of tumor growth requires the availability of a consistent series of instrumental studies conducted within a certain time range, which is not always available at the time of initial treatment. In this study, based on quantitative (age of onset, age of examination) and qualitative (large number of intracranial tumors, large number of spinal tumors, severity of neurological symptoms, mosaic status of the genetic variant) characteristics, an alternative classification of clinical subtypes of neurofibromatosis type 2 was developed. We have revealed statistically significant differences (<italic>p</italic>-value = 0.037) in the representation of Halliday prognostic classes between the groups identified using the proposed classification which allows us to suggest the possibility of integrating this approach into clinical practice.</p></abstract><trans-abstract xml:lang="ru"><p>Нейрофиброматоз 2-го типа – наследственное заболевание, предрасполагающее к развитию множественных опухолей центральной и периферической нервной системы. Заболевание характеризуется значительной вариабельностью клинической картины; количество новообразований, их локализация и скорость роста во многом определяют тяжесть течения. Однако оценка скорости опухолевого роста предполагает наличие последовательного ряда инструментальных исследований, проведенных в определенном диапазоне времени, что не всегда доступно на момент первичного обращения. В настоящем исследовании на основании количественных (возраст дебюта, возраст осмотра) и качественных (большое количество интракраниальных опухолей, большое количество спинальных опухолей, тяжесть неврологической симптоматики, мозаичный статус генетического варианта) характеристик была разработана альтернативная классификация клинических подтипов нейрофиброматоза 2-го типа. Наличие статистически значимых различий (<italic>p</italic>-value = 0.037) в представленности прогностических классов по Halliday между группами, выделенными при помощи предложенной классификации, позволяет сделать заключение о возможности интеграции данного подхода в клиническую практику.</p></trans-abstract><kwd-group xml:lang="en"><kwd>neurofibromatosis type 2</kwd><kwd>NF2</kwd><kwd>genotype-phenotype correlations</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>нейрофиброматоз 2-го типа</kwd><kwd>NF2</kwd><kwd>клинико-генетические корреляции</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>21-15-00262</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Coy S., Rashid R., Stemmer-Rachamimov A., Santagata S. 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