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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">10.21294/1814-4861-2026-25-3-159-165</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-4332</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>СЛУЧАЙ ИЗ КЛИНИЧЕСКОЙ ПРАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CASE REPORTS</subject></subj-group></article-categories><title-group><article-title>Комплексное лечение тяжелых проявлений нейрофиброматоза 1-го типа у пациентки с уникальным вариантом NF1:c.240_241del(p.Y80fs)</article-title><trans-title-group xml:lang="en"><trans-title>Comprehensive treatment of severe neurofibromatosis type 1 manifestations in the patient with NF1 mutation: c.240_241del(p.Y80fs)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4091-382X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мустафин</surname><given-names>Р. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Mustafin</surname><given-names>R. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мустафин Рустам Наилевич, кандидат биологических наук, доцент кафедры медицинской генетики и фундаментальной медицины </p><p>Researcher ID (WOS): S-2194-2018. Author ID (Scopus): 56603137500.</p><p>450008, г Уфа, ул. Ленина, 3</p></bio><bio xml:lang="en"><p>Rustam N. Mustafin, PhD, Associate Professor, Department of Medical Genetics and Fundamental Medicine</p><p>Researcher ID (WOS): S-2194-2018. Author ID (Scopus): 56603137500.</p><p>, Lenina st., Ufa, 450008</p></bio><email xlink:type="simple">ruji79@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ ВО Башкирский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bashkir State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>11</day><month>07</month><year>2026</year></pub-date><volume>25</volume><issue>3</issue><fpage>159</fpage><lpage>165</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мустафин Р.Н., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Мустафин Р.Н.</copyright-holder><copyright-holder xml:lang="en">Mustafin R.N.</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/4332">https://www.siboncoj.ru/jour/article/view/4332</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Нейрофиброматоз 1-го типа (НФ1) является аутосомно-доминантным опухолевым синдромом, характеризующимся выраженным полиморфизмом клинических проявлений. Имеются данные о наличии гено-фенотипических корреляций при НФ1 с более выраженными проявлениями болезни при определенных мутациях в гене NF1. Поэтому имеет значение выявление пациентов со специфической мутацией и тяжелым фенотипом НФ1.</p><p>Цель исследования описать генетические и клинические особенности НФ1 и тактику лечения пациентки с тяжелыми проявлениями болезни и уникальной мутацией в гене NF1.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Осмотр девочки 10 лет со спорадическим случаем НФ1, рентгенологическое исследование, МРТ, забор образца крови с выделением ДНК и секвенированием гена NF1.</p></sec><sec><title>Результаты</title><p>Результаты. У пациентки идентифицирован уникальный патогенный вариант c.240_241del(p.Y80fs) в гене NF1, а также выявлены клинические проявления НФ1 в виде ретроцеребеллярной кисты головного мозга, плексиформной нейрофибромы бедра, сколиоза III степени и фиброзной дисплазии бедренной кости. Проведена успешная хирургическая коррекция сколиоза. Для лечения плексиформной нейрофибромы назначена таргетная терапия селуметинибом.</p></sec><sec><title>Заключение</title><p>Заключение. Выявленный вариант NF1:c.240_241del(p.Y80fs) ранее не был идентифицирован в научной литературе и отсутствует в базе данных ClinVar. Описаны особенности клинических проявлений НФ1, характеризующиеся тяжелым сочетанным поражением. Для лечения таких случаев НФ1 необходимо сочетание таргетной терапии с высокотехнологичными операциями.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Neurofibromatosis type 1 (NF1) is an autosomal dominant tumor syndrome characterized by marked polymorphism of clinical manifestations. There is evidence of genotypic correlations in NF1 with more pronounced manifestations of the disease with certain mutations in the NF1 gene. therefore, it is important to describe patients with a specific mutation and a severe NF1 phenotype.</p></sec><sec><title>Purpose of the study</title><p>Purpose of the study: to describe the genetic and clinical features of NF1 and its treatment tactics in the patient with severe manifestations of the disease and a unique mutation in the NF1 gene.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. A ten-year-old girl with a sporadic case of NF1 was examined, X-ray examination was performed, a blood sample was taken with DNA extraction and sanger sequencing of the NF1 gene.</p></sec><sec><title>Results</title><p>Results. The patient was identified to have a unique pathogenic variant c.240_241del(p.Y80fs) in the NF1 gene, and the following clinical manifestations of NF1: retrocerebellar brain cyst, femur plexiform neurofibroma, grade 3 scoliosis, and femur fibrous dysplasia. successful surgical correction of the scoliosis was performed. targeted therapy with selumetinib was prescribed for femur plexiform neurofibroma treatment.</p></sec><sec><title>Conclusion</title><p>Conclusion. the identified NF1 variant: c.240_241del(p.Y80fs) has not previously been described in the scientific literature and is not included in the ClinVar database. the clinical manifestations of NF1, characterized by severe combined lesions, have been described. treatment of such cases of NF1 requires a combination of targeted therapy and high-tech surgery.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>ген NF1</kwd><kwd>гено-фенотипические корреляции</kwd><kwd>нейрофиброматоз 1-го типа</kwd><kwd>селуметиниб</kwd><kwd>сколиоз</kwd><kwd>хирургическая коррекция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>NF1 gene</kwd><kwd>genotypic correlations</kwd><kwd>neurofibromatosis type 1</kwd><kwd>selumetinib</kwd><kwd>scoliosis</kwd><kwd>surgical correction</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">Lee T.J., Chopra M., Kim R.H., Parkin P.C., Barnett-Tapia C. Incidence and prevalence of neurofibromatosis type 1 and 2: a systematic review and meta-analysis. Orphanet J Rare Dis. 2023; 18(1): 292. doi: 10.1186/s13023-023-02911-2.</mixed-citation><mixed-citation xml:lang="en">Lee T.J., Chopra M., Kim R.H., Parkin P.C., Barnett-Tapia C. Incidence and prevalence of neurofibromatosis type 1 and 2: a systematic review and meta-analysis. Orphanet J Rare Dis. 2023; 18(1): 292. doi: 10.1186/s13023-023-02911-2.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Yao R., Yu T., Xu Y., Yu L., Wang J., Wang X., Wang J., Shen Y. Clinical Presentation and Novel Pathogenic Variants among 68 Chinese Neurofibromatosis 1 Children. Genes (Basel). 2019; 10(11): 847. doi: 10.3390/genes10110847.</mixed-citation><mixed-citation xml:lang="en">Yao R., Yu T., Xu Y., Yu L., Wang J., Wang X., Wang J., Shen Y. Clinical Presentation and Novel Pathogenic Variants among 68 Chinese Neurofibromatosis 1 Children. Genes (Basel). 2019; 10(11): 847. doi: 10.3390/genes10110847.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Frayling I.M., Mautner V.F., van Minkelen R., Kallionpaa R.A., Aktaş S., Baralle D., Ben-Shachar S., Callaway A., Cox H., Eccles D.M., Ferkal S., Laduca H., Lázaro C., Rogers M.T., Stuenkel A.J., Summerour P., Varan A., Yap Y.S., Zehou O., Peltonen J., Evans D.G., Wolkenstein P., Upadhyaya M. Breast cancer risk in neurofibromatosis type 1 is a function of the type of NF1 gene mutation: a new genotype-phenotype correlation. J Med Genet. 2019; 56(4): 209–19. doi: 10.1136/jmedgenet-2018-105599.</mixed-citation><mixed-citation xml:lang="en">Frayling I.M., Mautner V.F., van Minkelen R., Kallionpaa R.A., Aktaş S., Baralle D., Ben-Shachar S., Callaway A., Cox H., Eccles D.M., Ferkal S., Laduca H., Lázaro C., Rogers M.T., Stuenkel A.J., Summerour P., Varan A., Yap Y.S., Zehou O., Peltonen J., Evans D.G., Wolkenstein P., Upadhyaya M. Breast cancer risk in neurofibromatosis type 1 is a function of the type of NF1 gene mutation: a new genotype-phenotype correlation. J Med Genet. 2019; 56(4): 209–19. doi: 10.1136/jmedgenet-2018-105599.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Saharafi P., Akar İ., Ersoy-Evans S., Anlar B., Varan A., Vargel I., Cetin M., Ayter S. Assessment of Ecotropic Viral Integration Site 2B (EVI2B) Gene in Juvenile Myelomonocytic Leukemia and Neurofibromatosis Type 1 NF1 Tumors. Biochem Genet. 2024; 62(2): 1263–76. doi: 10.1007/s10528-023-10480-z.</mixed-citation><mixed-citation xml:lang="en">Saharafi P., Akar İ., Ersoy-Evans S., Anlar B., Varan A., Vargel I., Cetin M., Ayter S. Assessment of Ecotropic Viral Integration Site 2B (EVI2B) Gene in Juvenile Myelomonocytic Leukemia and Neurofibromatosis Type 1 NF1 Tumors. Biochem Genet. 2024; 62(2): 1263–76. doi: 10.1007/s10528-023-10480-z.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Мустафин Р.Н. Возможности диагностики и лечения нейрофиброматоза 1-го типа в России. Сибирский онкологический журнал. 2023; 22(3): 119–24. doi: 10.21294/1814-4861-2023-22-3-119124 . EDN: WTIXDC.</mixed-citation><mixed-citation xml:lang="en">Mustafin R.N. Prospects for diagnostics and treatment of neurofibromatosis type 1 in Russia. Siberian Journal of Oncology. 2023; 22(3): 119–24. (In Russian). doi: 10.21294/1814-4861-2023-22-3-119124 . EDN: WTIXDC.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Gkikas M.A., Nikolaidou A., Sandali A., Benekos K., Tsinopoulos I., Lamprogiannis L. Prevalence of optic pathway glioma in NF1: a systematic review and meta-analysis focused on MRI surveillance. J AAPOS. 2025; 29(6): 104701. doi: 10.1016/j.jaapos.2025.104701.</mixed-citation><mixed-citation xml:lang="en">Gkikas M.A., Nikolaidou A., Sandali A., Benekos K., Tsinopoulos I., Lamprogiannis L. Prevalence of optic pathway glioma in NF1: a systematic review and meta-analysis focused on MRI surveillance. J AAPOS. 2025; 29(6): 104701. doi: 10.1016/j.jaapos.2025.104701.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Lim Z., Gu T.Y., Tai B.C., Puhaindran M.E. Survival outcomes of malignant peripheral nerve sheath tumors (MPNSTs) with and without neurofibromatosis type I (NF1): a meta-analysis. World J Surg Oncol. 2024; 22(1): 14. doi: 10.1186/s12957-023-03296-z.</mixed-citation><mixed-citation xml:lang="en">Lim Z., Gu T.Y., Tai B.C., Puhaindran M.E. Survival outcomes of malignant peripheral nerve sheath tumors (MPNSTs) with and without neurofibromatosis type I (NF1): a meta-analysis. World J Surg Oncol. 2024; 22(1): 14. doi: 10.1186/s12957-023-03296-z.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Wang D., Zhang B.H., Wen X., Chen K.H., Xiao H.T., Xu X.W., Li Q.F. Clinical features and surgical treatments of scoliosis in neurofibromatosis type 1: a systemic review and meta-analysis. Eur Spine J. 2024; 33(7): 2646–65. doi: 10.1007/s00586-024-08194-w.</mixed-citation><mixed-citation xml:lang="en">Wang D., Zhang B.H., Wen X., Chen K.H., Xiao H.T., Xu X.W., Li Q.F. Clinical features and surgical treatments of scoliosis in neurofibromatosis type 1: a systemic review and meta-analysis. Eur Spine J. 2024; 33(7): 2646–65. doi: 10.1007/s00586-024-08194-w.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Han Y., Li B., Yu X., Liu J., Zhao W., Zhang D., Zhang J. Efficacy and safety of selumetinib in patients with neurofibromatosis type 1 and inoperable plexiform neurofibromas: a systematic review and meta-analysis. J Neurol. 2024; 271(5): 2379–89. doi: 10.1007/s00415-024-12301-8.</mixed-citation><mixed-citation xml:lang="en">Han Y., Li B., Yu X., Liu J., Zhao W., Zhang D., Zhang J. Efficacy and safety of selumetinib in patients with neurofibromatosis type 1 and inoperable plexiform neurofibromas: a systematic review and meta-analysis. J Neurol. 2024; 271(5): 2379–89. doi: 10.1007/s00415-024-12301-8.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Мустафин Р.Н. Атипичные формы и гено-фенотипические корреляции нейрофиброматоза 1-го типа. Сибирский онкологический журнал. 2022; 21(4): 98–109. doi: 10.21294/1814-4861-2022-21-4-98-109. EDN: EMRWCL.</mixed-citation><mixed-citation xml:lang="en">Mustafin R.N. Atypical clinical manifestations and genotype-phenotype correlations of neurofibromatosis type 1. Siberian Journal of Oncology. 2022; 21(4): 98–109. (in Russian). doi: 10.21294/1814-4861-2022-21-4-98-109. EDN: EMRWCL.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Tsipi M., Poulou M., Fylaktou I., Kosma K., Tsoutsou E., Pons M.R., Kokkinou E., Kitsiou-Tzeli S., Fryssira H., Tzetis M. Phenotypic expression of a spectrum of Neurofibromatosis Type 1 (NF1) mutations identified through NGS and MLPA. J Neurol Sci. 2018; 395: 95–105. doi: 10.1016/j.jns.2018.10.006.</mixed-citation><mixed-citation xml:lang="en">Tsipi M., Poulou M., Fylaktou I., Kosma K., Tsoutsou E., Pons M.R., Kokkinou E., Kitsiou-Tzeli S., Fryssira H., Tzetis M. Phenotypic expression of a spectrum of Neurofibromatosis Type 1 (NF1) mutations identified through NGS and MLPA. J Neurol Sci. 2018; 395: 95–105. doi: 10.1016/j.jns.2018.10.006.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Bettegowda C., Upadhayaya M., Evans D.G., Kim A., Mathios D., Hanemann C.O.; REiNS International Collaboration. GenotypePhenotype Correlations in Neurofibromatosis and Their Potential Clinical Use. Neurology. 2021; 97(7 Suppl 1): S91–S98. doi: 10.1212/WNL.0000000000012436.</mixed-citation><mixed-citation xml:lang="en">Bettegowda C., Upadhayaya M., Evans D.G., Kim A., Mathios D., Hanemann C.O.; REiNS International Collaboration. GenotypePhenotype Correlations in Neurofibromatosis and Their Potential Clinical Use. Neurology. 2021; 97(7 Suppl 1): S91–S98. doi: 10.1212/WNL.0000000000012436.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Мустафин Р.Н. Перспективы эпигенетических исследований нейрофиброматоза 1-го типа. Сибирский онкологический журнал. 2025; 24(5): 128–39. doi: 10.21294/1814-4861-2025-24-5-128-139. EDN: UNKTTP.</mixed-citation><mixed-citation xml:lang="en">Mustafin R.N. Prospects for epigenetic research in neurofibromatosis type 1. Siberian Journal of Oncology. 2025; 24(5): 128–39. (in Russian). doi: 10.21294/1814-4861-2025-24-5-128-139. EDN: UNKTTP.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Zhu B., Zheng T., Wang W., Gu Y., Wei C., Li Q., Wang Z. Genotypephenotype correlations of neurofibromatosis type 1: a cross-sectional study from a large Chinese cohort. J Neurol. 2024; 271(4): 1893–900. doi: 10.1007/s00415-023-12127-w.</mixed-citation><mixed-citation xml:lang="en">Zhu B., Zheng T., Wang W., Gu Y., Wei C., Li Q., Wang Z. Genotypephenotype correlations of neurofibromatosis type 1: a cross-sectional study from a large Chinese cohort. J Neurol. 2024; 271(4): 1893–900. doi: 10.1007/s00415-023-12127-w.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Pacot L., Blok M., Vidaud D., Fertitta L., Laurendeau I., Coustier A., Maillard T., Barbance C., Parfait B.; NF-France network; Wolkenstein P., Pasmant E. Refined genotype-phenotype correlations in neurofibromatosis type 1 patients with NF1 point variants. J Med Genet. 2025; 62(12): 783–93. doi: 10.1136/jmg-2025-110783.</mixed-citation><mixed-citation xml:lang="en">Pacot L., Blok M., Vidaud D., Fertitta L., Laurendeau I., Coustier A., Maillard T., Barbance C., Parfait B.; NF-France network; Wolkenstein P., Pasmant E. Refined genotype-phenotype correlations in neurofibromatosis type 1 patients with NF1 point variants. J Med Genet. 2025; 62(12): 783–93. doi: 10.1136/jmg-2025-110783.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
