<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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">Neuromuscular Diseases</journal-id><journal-title-group><journal-title xml:lang="en">Neuromuscular Diseases</journal-title><trans-title-group xml:lang="ru"><trans-title>Нервно-мышечные болезни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-8721</issn><issn publication-format="electronic">2413-0443</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">377</article-id><article-id pub-id-type="doi">10.17650/2222-8721-2020-10-1-88-92</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЙ РАЗБОР</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Clinical and genetic characteristics of the early 66th type epileptic encephalopathy (literature review and own observation)</article-title><trans-title-group xml:lang="ru"><trans-title>Клинико-генетические характеристики ранней эпилептической энцефалопатии 66‑го типа (обзор литературы и собственное наблюдение)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2672-6294</contrib-id><name-alternatives><name xml:lang="en"><surname>Markova</surname><given-names>T. V.</given-names></name><name xml:lang="ru"><surname>Маркова</surname><given-names>Т. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Moskvorech’e St., Moscow 115478, Russia</p></bio><bio xml:lang="ru"><p>Россия, 115522 Москва, ул. Москворечье, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5871-8005</contrib-id><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><bio xml:lang="en"><p>1 Moskvorech’e St., Moscow 115478, Russia</p></bio><bio xml:lang="ru"><p>Россия, 115522 Москва, ул. Москворечье, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2901-0539</contrib-id><name-alternatives><name xml:lang="en"><surname>Lozier</surname><given-names>E. R.</given-names></name><name xml:lang="ru"><surname>Лозиер</surname><given-names>E. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 1, 21 Katukova St., Moscow 123181, Russia</p></bio><bio xml:lang="ru"><p>Россия, 123181 Москва, ул. Катукова, 21, корп. 1</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Isaev</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Исаев</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 1, 3 Gubkina St., Moscow 119333, Russia</p></bio><bio xml:lang="ru"><p>Россия, 119333 Москва, ул. Губкина, 3, корп. 1</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9024-0785</contrib-id><name-alternatives><name xml:lang="en"><surname>Kaimonov</surname><given-names>V. S.</given-names></name><name xml:lang="ru"><surname>Каймонов</surname><given-names>В. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 1, 3 Gubkina St., Moscow 119333, Russia</p></bio><bio xml:lang="ru"><p>Россия, 119333 Москва, ул. Губкина, 3, корп. 1</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pomerantseva</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Померанцева</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 1, 3 Gubkina St., Moscow 119333, Russia</p></bio><bio xml:lang="ru"><p>Россия, 119333 Москва, ул. Губкина, 3, корп. 1</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6414-436X</contrib-id><name-alternatives><name xml:lang="en"><surname>Konovalov</surname><given-names>F. A.</given-names></name><name xml:lang="ru"><surname>Коновалов</surname><given-names>Ф. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Build. 1, 21 Katukova St., Moscow 123181, Russia</p></bio><bio xml:lang="ru"><p>Россия, 123181 Москва, ул. Катукова, 21, корп. 1</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4905-1303</contrib-id><name-alternatives><name xml:lang="en"><surname>Schagina</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Щагина</surname><given-names>О. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moskvorech’e St., Moscow 115478, Russia</p></bio><bio xml:lang="ru"><p>Россия, 115522 Москва, ул. Москворечье, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5602-2805</contrib-id><name-alternatives><name xml:lang="en"><surname>Dadali</surname><given-names>E. L.</given-names></name><name xml:lang="ru"><surname>Дадали</surname><given-names>Е. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moskvorech’e St., Moscow 115478, Russia</p></bio><bio xml:lang="ru"><p>Елена Леонидовна Дадали</p><p>ФБГНУ «Медико-генетический научный центр имени академика Н. П. Бочкова» Минобрнауки России</p></bio><email>genclinic@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Medical Genetics named after academician N. P. Bochkov</institution></aff><aff><institution xml:lang="ru">ФБГНУ «Медико-генетический научный центр имени академика Н. П. Бочкова» Минобрнауки России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Independent Clinical Bioinformatics Laboratory</institution></aff><aff><institution xml:lang="ru">Лаборатория клинической биоинформатики</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Center for Genetics and Reproductive Medicine “Genetico”</institution></aff><aff><institution xml:lang="ru">Центр генетики и репродуктивной медицины «Генетико»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-06-03" publication-format="electronic"><day>03</day><month>06</month><year>2020</year></pub-date><volume>10</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>88</fpage><lpage>92</lpage><history><date date-type="received" iso-8601-date="2020-06-03"><day>03</day><month>06</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-06-03"><day>03</day><month>06</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Markova T.V., Borovikov A.O., Lozier E.R., Isaev A.A., Kaimonov V.S., Pomerantseva E.A., Konovalov F.A., Schagina O.A., Dadali E.L.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Маркова Т.В., Боровиков А.О., Лозиер E.Р., Исаев А.А., Каймонов В.С., Померанцева Е.А., Коновалов Ф.А., Щагина О.А., Дадали Е.Л.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Markova T.V., Borovikov A.O., Lozier E.R., Isaev A.A., Kaimonov V.S., Pomerantseva E.A., Konovalov F.A., Schagina O.A., Dadali E.L.</copyright-holder><copyright-holder xml:lang="ru">Маркова Т.В., Боровиков А.О., Лозиер E.Р., Исаев А.А., Каймонов В.С., Померанцева Е.А., Коновалов Ф.А., Щагина О.А., Дадали Е.Л.</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://nmb.abvpress.ru/jour/article/view/377">https://nmb.abvpress.ru/jour/article/view/377</self-uri><abstract xml:lang="en"><p>Early epileptic encephalopathy-66 was first diagnosed in a male patient from Russia using whole-exome sequencing. Early epileptic encephalopathy- 66 is a unique disorder in the group of early epileptic encephalopathies. The same recurrent heterozygous variant of the nucleotide sequence was found in all known patients, but the severity of seizures and dysmorphic signs significantly vary between patients. The current study of a recurrent pathogenic variant in PACS2 gene expands the phenotype spectrum of early epileptic encephalopathy-66 and will improve the management of patients with that disorder in Russia in the future.</p></abstract><trans-abstract xml:lang="ru"><p>Представлено первое описание клинико-генетических характеристик российского больного с ранней эпилептической энцефалопатией 66‑го типа. С помощью полноэкзомного секвенирования обнаружена ранее описанная гетерозиготная мутация NM_001100913.2: c.625G&gt;A (p.Glu209Lys) в гене PACS2. Данное моногенное заболевание является уникальным в группе ранних эпилептических энцефалопатий – у всех пациентов обнаруживается одинаковый патогенный вариант нуклеотидной последовательности, но клинические проявления отличаются по степени тяжести и выраженности дизморфических признаков, что пред- положительно обусловлено разным генетическим фоном. Клиническое изучение серий случаев рекуррентных патогенных вариантов позволяет оптимизировать тактику ведения новых пациентов при обнаружении уже известного генетического варианта.</p></trans-abstract><kwd-group xml:lang="en"><kwd>epileptic encephalopathy</kwd><kwd>PACS2 gene</kwd><kwd>exome sequencing</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эпилептическая энцефалопатия</kwd><kwd>ген PACS2</kwd><kwd>секвенирование экзома</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Trump N., McTague A., Brittain H. et al. Improving diagnosis and broadening the phenotypes in early-onset seizure and severe developmental delay disorders through gene panel analysis. J Med Genet 2016;53(5):310–7. DOI: 10.1136/jmedgenet-2015-103263. PMID: 26993267.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Thevenon J., Duffourd Y., Masurel-Paulet A. et al. Diagnostic odyssey in severe neurodevelopmental disorders: toward clinical whole-exome sequencing as a first-line diagnostic test. Clin Genet 2016;89(6): 700–7. DOI: 10.1111/cge.12732. PMID: 26757139.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Olson H.E., Jean-Marcais N., Yang E. et al. A recurrent de novo PACS2 heterozygous missense variant causes neonatal-onset developmental epileptic encephalopathy, facial dysmorphism, and cerebellar dysgenesis. Am J Hum Genet 2018;103(4):631. DOI: 10.1016/j.ajhg.2018.09.002. PMID: 30290155.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Simmen T., Aslan J.E., Blagoveshchenskaya A.D. et al. PACS-2 controls endoplasmic reticulum-mitochondria communication and Bid-mediated apoptosis. EMBO J 2005;24(4):717–29. DOI: 10.1038/sj.emboj.7600559. PMID: 15692567.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Youker R.T., Shinde U., Day R. et al. At the crossroads of homoeostasis and disease: roles of the PACS proteins in membrane traffic and apoptosis. Biochem J 2009;421:1–15. DOI: 10.1042/Bj20081016. PMID: 19505291.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Perucca P., Perucca E. Identifying mutations in epilepsy genes: Impact on treatment selection. Epilepsy Res 2019;152:18–30. DOI: 10.1016/j.eplepsyres.2019.03.001. PMID: 30870728.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Dentici M.L., Barresi S., Niceta M. et al. Expanding the clinical spectrum associated with PACS2 mutations. Clin Genet 2019;95(4):525–31. DOI: 10.1111/cge.13516. PMID: 30684285.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Zollino M., Seminara L., Orteschi D. et al. The ring 14 syndrome: clinical and molecular definition. Am J Med Genet A 2009;149A(6):1116–24. DOI: 10.1002/ajmg.a.32831. PMID: 19441122.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Holder J.L.Jr., Lotze T.E., Bacino C., Cheung S.W. A child with an inherited 0.31 Mb microdeletion of chromosome 14q32.33: further delineation of a critical region for the 14q32 deletion syndrome. Am J Med Genet A 2012;158A(8):1962–6. DOI: 10.1002/ajmg.a.35289. PMID: 22488736.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Helbig I., Lopez-Hernandez T., Shor O. et al. A recurrent missense variant in AP2M1 impairs clathrin-mediated endocytosis and causes developmental and epileptic encephalopathy. Am J Hum Genet 2019;104(6):1060–72. DOI: 10.1016/j.ajhg.2019.04.001. PMID: 31104773.</mixed-citation></ref></ref-list></back></article>
