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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">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25557/2073-7998.2024.09.49-58</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-2556</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Молекулярно-генетическая диагностика мозаичных форм заболеваний  с использованием дуплекс-специфической нуклеазы  на примере PIK3CA-ассоциированного спектра заболеваний избыточного роста</article-title><trans-title-group xml:lang="en"><trans-title>Molecular genetic diagnosis of mosaic forms using duplex-specific nuclease  in patients with PIK3CA-related overgrowth spectrum</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>Пустовалова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pustovalova</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пустовалова Анна Васильевна</p><p>115522 г. Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>Anna V. Pustovalova</p><p>1, Moskvorechye st., Moscow, 115522</p></bio><email xlink:type="simple">a_pustovalova02@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Николаева</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaeva</surname><given-names>A. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522 г. Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>1, Moskvorechye st., Moscow, 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петрова</surname><given-names>К. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrova</surname><given-names>K. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>123182 г. Москва, пл. Академика Курчатова, д. 1</p></bio><bio xml:lang="en"><p>1, Akademika Kurchatova square, Moscow, 123182</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бычкова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bychkova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522 г. Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>1, Moskvorechye st., Moscow, 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сигин</surname><given-names>В. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Sigin</surname><given-names>V. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522 г. Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>1, Moskvorechye st., Moscow, 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Стрельников</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Strelnikov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>115522 г. Москва, ул. Москворечье, д. 1</p></bio><bio xml:lang="en"><p>1, Moskvorechye st., Moscow, 115522</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ Медико-генетический научный центр имени академика Н.П. Бочкова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУ Национальный исследовательский центр «Курчатовский институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kurchatov Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>05</day><month>12</month><year>2024</year></pub-date><volume>23</volume><issue>9</issue><fpage>49</fpage><lpage>58</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Пустовалова А.В., Николаева А.Ф., Петрова К.О., Бычкова Е.В., Сигин В.О., Стрельников В.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Пустовалова А.В., Николаева А.Ф., Петрова К.О., Бычкова Е.В., Сигин В.О., Стрельников В.В.</copyright-holder><copyright-holder xml:lang="en">Pustovalova A.V., Nikolaeva A.F., Petrova K.O., Bychkova E.V., Sigin V.O., Strelnikov V.V.</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.medgen-journal.ru/jour/article/view/2556">https://www.medgen-journal.ru/jour/article/view/2556</self-uri><abstract><sec><title>Введение</title><p>Введение. Обнаружение интересующих генетических вариантов при мозаичных формах заболеваний может быть существенно осложнено малой представленностью таковых в биологическом материале, взятом для анализа. Существует широкий спектр методологических подходов для выявления редких генетических вариантов в клинико-лабораторной диагностике, однако не все они могут быть доступны для многих лабораторий из-за различных ограничений. Метод с применением дуплекс-специфической нуклеазы (ДСН) с последующим секвенированием по Сэнгеру нацелен на обнаружение низкопредставленных однонуклеотидных генетических вариантов практически в любой точке генома.</p></sec><sec><title>Цель</title><p>Цель: усовершенствование метода молекулярно-генетической диагностики мозаичных форм генетических заболеваний с применением ДСН на примере PIK3CA-ассоциированного спектра избыточного роста (PROS).</p></sec><sec><title>Методы</title><p>Методы. Материалом для исследования послужила ДНК из лейкоцитов периферической крови и биоптатов тканей. Для определения аналитических свойств метода моделировали уровень представленности альтернативного аллеля путём добавления в реакционную смесь образцов ДНК, гомозиготных по полиморфному и референсному вариантам, в разном соотношении.</p></sec><sec><title>Результаты</title><p>Результаты. Минимально достоверно детектируемый уровень представленности альтернативного аллеля составил 1,5%. С использованием метода, основанного на применении ДСН, были подтверждены ранее выявленные на NGS-панели с глубоким покрытием генетические варианты PIK3CA у 9 пациентов с клиническими проявлениями PROS.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. The detection of genetic variants of interest in mosaic disease can be significantly complicated by the low representation of such variants in the biological material taken for analysis. There is a wide range of methodological approaches for the detection of rare genetic variants in clinical and laboratory diagnostics, but not all of them may be available to many laboratories due to various limitations. A method using duplex-specific nuclease followed by Sanger sequencing aims to detect low-representation single-nucleotide genetic variants virtually anywhere in the genome.</p></sec><sec><title>Aim</title><p>Aim: to improve the method of molecular genetic diagnostics of mosaic forms of genetic diseases using duplex-specific nuclease (DSN) on the example of PIK3CA-related overgrowth spectrum (PROS).</p></sec><sec><title>Methods</title><p>Methods. DNA from peripheral blood leukocytes and tissue biopsies was used as a material for the study. To determine the analytical properties of the method, the level of alternative allele representation was modeled by adding DNA samples homozygous for polymorphic and reference variants to the reaction in different ratios.</p></sec><sec><title>Results</title><p>Results. The minimum reliably detectable level of alternative allele representation was 1.5%. Using the DSN-based method, the PIK3CA genetic variants previously detected on the NGS panel with high coverage in 9 patients with clinical manifestations of PROS were confirmed.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дуплекс-специфическая нуклеаза</kwd><kwd>секвенирование по Сэнгеру</kwd><kwd>мозаицизм</kwd><kwd>PROS</kwd></kwd-group><kwd-group xml:lang="en"><kwd>duplex-specific nuclease</kwd><kwd>Sanger sequencing</kwd><kwd>mosaicism</kwd><kwd>PROS</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Минобрнауки России для ФГБНУ МГНЦ</funding-statement><funding-statement xml:lang="en">The study has been funded by the state assignment of the Ministry of Science and Higher Education of the Russian Federation for RCMG.</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">Keppler-Noreuil K.M., Sapp J.C., Lindhurst M.J., et al. Clinical delineation and natural history of the PIK3CA -related overgrowth spectrum. Am J Med Genet A. 2014;164(7):1713–1733. doi: 10.1002/ajmg.a.36552.</mixed-citation><mixed-citation xml:lang="en">Keppler-Noreuil K.M., Sapp J.C., Lindhurst M.J., et al. Clinical delineation and natural history of the PIK3CA -related overgrowth spectrum. Am J Med Genet A. 2014;164(7):1713–1733. doi: 10.1002/ajmg.a.36552.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Keppler-Noreuil K.M., Rios J.J., Parker V.E.R., et al. PIK3CA -related overgrowth spectrum (PROS): Diagnostic and testing eligibility criteria, differential diagnosis, and evaluation. Am J Med Genet A. 2016;167(2):287–295. doi: 10.1002/ajmg.a.36836.</mixed-citation><mixed-citation xml:lang="en">Keppler-Noreuil K.M., Rios J.J., Parker V.E.R., et al. PIK3CA -related overgrowth spectrum (PROS): Diagnostic and testing eligibility criteria, differential diagnosis, and evaluation. Am J Med Genet A. 2016;167(2):287–295. doi: 10.1002/ajmg.a.36836.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Nathan N., Keppler-Noreuil K.M., Biesecker L.G., et al. Mosaic Disorders of the PI3K/PTEN/AKT/TSC/mTORC1 Signaling Pathway. Dermatol Clin. 2017;35(1):51-60. doi: 10.1016/j.det.2016.07.001.</mixed-citation><mixed-citation xml:lang="en">Nathan N., Keppler-Noreuil K.M., Biesecker L.G., et al. Mosaic Disorders of the PI3K/PTEN/AKT/TSC/mTORC1 Signaling Pathway. Dermatol Clin. 2017;35(1):51-60. doi: 10.1016/j.det.2016.07.001.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Parker V.E.R., Keppler-Noreuil K.M., Faivre L., et al. Safety and efficacy of low-dose sirolimus in the PIK3CA-related overgrowth spectrum. Genet Med. 2019;21(5):1189-1198. doi: 10.1038/s41436-018-0297-9.</mixed-citation><mixed-citation xml:lang="en">Parker V.E.R., Keppler-Noreuil K.M., Faivre L., et al. Safety and efficacy of low-dose sirolimus in the PIK3CA-related overgrowth spectrum. Genet Med. 2019;21(5):1189-1198. doi: 10.1038/s41436-018-0297-9.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Shagin D.A., Rebrikov D.V., Kozhemyako V.B., et al. A novel method for SNP detection using a new duplex-specific nuclease from crab hepatopancreas. Genome Res. 2002;12(12):1935-42. doi: 10.1101/gr.547002.</mixed-citation><mixed-citation xml:lang="en">Shagin D.A., Rebrikov D.V., Kozhemyako V.B., et al. A novel method for SNP detection using a new duplex-specific nuclease from crab hepatopancreas. Genome Res. 2002;12(12):1935-42. doi: 10.1101/gr.547002.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Shagin D.A., Rebrikov D.V. Molecular biology applications of the red king crab duplex-specific nuclease. Bulletin of RSMU. 2022;(1):5–10. doi: 10.24075/brsmu.2022.010.</mixed-citation><mixed-citation xml:lang="en">Shagin D.A., Rebrikov D.V. Molecular biology applications of the red king crab duplex-specific nuclease. Bulletin of RSMU. 2022;(1):5–10. doi: 10.24075/brsmu.2022.010.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Song C., Liu Y., Fontana R., et al. Elimination of unaltered DNA in mixed clinical samples via nuclease-assisted minor-allele enrichment. Nucleic Acids Res. 2016;44(19):e146. doi: 10.1093/nar/gkw650.</mixed-citation><mixed-citation xml:lang="en">Song C., Liu Y., Fontana R., et al. Elimination of unaltered DNA in mixed clinical samples via nuclease-assisted minor-allele enrichment. Nucleic Acids Res. 2016;44(19):e146. doi: 10.1093/nar/gkw650.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Ladas I., Fitarelli-Kiehl M., Song C., et al. Multiplexed Elimination of Wild-Type DNA and High-Resolution Melting Prior to Targeted Resequencing of Liquid Biopsies. Clinical Chemistry. 2017;63(10):1605–1613. doi:10.1373/clinchem.2017.272849.</mixed-citation><mixed-citation xml:lang="en">Ladas I., Fitarelli-Kiehl M., Song C., et al. Multiplexed Elimination of Wild-Type DNA and High-Resolution Melting Prior to Targeted Resequencing of Liquid Biopsies. Clinical Chemistry. 2017;63(10):1605–1613. doi:10.1373/clinchem.2017.272849.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Green M.R., Sambrook J. Isolation of High-Molecular-Weight DNA Using Organic Solvents. Cold Spring Harb Protoc. 2017;2017(4):pdb. prot093450. doi: 10.1101/pdb.prot093450.</mixed-citation><mixed-citation xml:lang="en">Green M.R., Sambrook J. Isolation of High-Molecular-Weight DNA Using Organic Solvents. Cold Spring Harb Protoc. 2017;2017(4):pdb. prot093450. doi: 10.1101/pdb.prot093450.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Tanaka Y., Kanai F., Tada M., et al. Absence of PIK3CA hotspot mutations in hepatocellular carcinoma in Japanese patients. Oncogene. 2006;25(20):2950-2. doi: 10.1038/sj.onc.1209311.</mixed-citation><mixed-citation xml:lang="en">Tanaka Y., Kanai F., Tada M., et al. Absence of PIK3CA hotspot mutations in hepatocellular carcinoma in Japanese patients. Oncogene. 2006;25(20):2950-2. doi: 10.1038/sj.onc.1209311.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Рыжкова О.П., Кардымон О.Л., Прохорчук Е.Б., и др. Руководство по интерпретации данных последовательности ДНК человека, полученных методами массового параллельного секвенирования (MPS) (редакция 2018, версия 2). Медицинская генетика. 2019;18(2):3-23. doi:10.25557/2073-7998.2019.02.3-23.</mixed-citation><mixed-citation xml:lang="en">Ryzhkova O.P., Kardymon O.L., Prohorchuk E.B., et al. Rukovodstvo po interpretatsii dannykh posledovatel’nosti DNK cheloveka, poluchennykh metodami massovogo parallel’nogo sekvenirovaniya (MPS) (redaktsiya 2018, versiya 2) [Guidelines for the interpretation of massive parallel sequencing variants (update 2018, v2)]. Meditsinskaya genetika [Medical Genetics]. 2019;18(2):3-23. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Davidson C.J., Zeringer E., Champion K.J., et al. Improving the limit of detection for Sanger sequencing: a comparison of methodologies for KRAS variant detection. Biotechniques. 2012;53(3):182-8. doi: 10.2144/000113913.</mixed-citation><mixed-citation xml:lang="en">Davidson C.J., Zeringer E., Champion K.J., et al. Improving the limit of detection for Sanger sequencing: a comparison of methodologies for KRAS variant detection. Biotechniques. 2012;53(3):182-8. doi: 10.2144/000113913.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Сагоян Г.Б., Клецкая И.С., Имянитов Е.Н., и др. Спектр синдромов избыточного роста, связанных с мутацией PIK3CA. Обзор литературы. Российский журнал детской гематологии и онкологии (РЖДГиО). 2022;9(1):29-44. doi:10.21682/2311-1267-2022-9-1-29-44.</mixed-citation><mixed-citation xml:lang="en">Sagoyan G.B., Kletskaya I.S., Imyanitov Ye.N., et al. Spektr sindromov izbytochnogo rosta, svyazannykh s mutatsiyey PIK3CA. Obzor literatury [A spectrum of overgrowth syndromes associated with the PIK3CA mutation. Literature review]. Rossiyskiy zhurnal detskoy gematologii i onkologii [Russian Journal of Pediatric Hematology and Oncology]. 2022;9(1):29-44. (In Russ.) https://doi.org/10.21682/2311-1267-2022-9-1-29-44</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Singh S., Bradford D., Li X., et al. FDA Approval Summary: Alpelisib for PIK3CA-Related Overgrowth Spectrum. Clin Cancer Res. 2024;30(1):23–28. doi:10.1158/1078-0432.CCR-23-1270.</mixed-citation><mixed-citation xml:lang="en">Singh S., Bradford D., Li X., et al. FDA Approval Summary: Alpelisib for PIK3CA-Related Overgrowth Spectrum. Clin Cancer Res. 2024;30(1):23–28. doi:10.1158/1078-0432.CCR-23-1270.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Angulo-Urarte A., Graupera M. When, where and which PIK3CA mutations are pathogenic in congenital disorders. Nat Cardiovasc Res. 2022;1(8):700–714. doi:10.1038/s44161-022-00107-8.</mixed-citation><mixed-citation xml:lang="en">Angulo-Urarte A., Graupera M. When, where and which PIK3CA mutations are pathogenic in congenital disorders. Nat Cardiovasc Res. 2022;1(8):700–714. doi:10.1038/s44161-022-00107-8</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>
