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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">medbio</journal-id><journal-title-group><journal-title xml:lang="ru">Медико-биологические проблемы жизнедеятельности</journal-title><trans-title-group xml:lang="en"><trans-title>Medical and Biological Problems of Life Activity</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-2088</issn><publisher><publisher-name>Республиканский научно-практический центр радиационной медицины и экологии человека</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.58708/2074-2088.2026-3(39)-87-93</article-id><article-id custom-type="elpub" pub-id-type="custom">medbio-540</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>КЛИНИЧЕСКАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Профиль изменений в генах МАРК-сигнального пути, репарации ДНК/РНК, контроля и регуляции клеточного цикла при плазмоклеточных новообразованиях</article-title><trans-title-group xml:lang="en"><trans-title>Profile of Gene Alterations in the MAPK Signaling Pathway, DNA/RNA Repair, and Cell Cycle Control and Regulation in Plasma Cell Neoplasms</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3488-6650</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козич</surname><given-names>Ж. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozich</surname><given-names>Zh. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Гомель</p></bio><email xlink:type="simple">jannakozi@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7645-3952</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Климкович</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Klimkovich</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Минск</p></bio><email xlink:type="simple">det.hematology@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Руденкова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rudenkova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Минск</p></bio><email xlink:type="simple">t.rudenkova@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костюк</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostyuk</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Минск</p></bio><email xlink:type="simple">jannakozi@rambler.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Красько</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kras´ko</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Минск</p></bio><email xlink:type="simple">olga.krasko.ok@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0310-5532</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пугачева</surname><given-names>Ж. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Pugacheva</surname><given-names>J. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Гомель</p></bio><email xlink:type="simple">j.pugacheva@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>ГУ «РНПЦ радиационной медицины и экологии человека»</institution><country>Belarus</country></aff><aff xml:lang="ru" id="aff-2"><institution>УО «Белорусский государственный медицинский университет»</institution><country>Belarus</country></aff><aff xml:lang="ru" id="aff-3"><institution>УО «Белорусский государственный медицинский университет»,</institution><country>Belarus</country></aff><aff xml:lang="ru" id="aff-4"><institution>ГНУ «Объединённый институт проблем информатики НАН Беларуси»</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>01</day><month>11</month><year>2026</year></pub-date><volume>0</volume><issue>3</issue><fpage>87</fpage><lpage>93</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Козич Ж.М., Климкович Н.Н., Руденкова Т.В., Костюк С.А., Красько О.В., Пугачева Ж.Н., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Козич Ж.М., Климкович Н.Н., Руденкова Т.В., Костюк С.А., Красько О.В., Пугачева Ж.Н.</copyright-holder><copyright-holder xml:lang="en">Kozich Z.M., Klimkovich N.N., Rudenkova T.V., Kostyuk S.A., Kras´ko O.V., Pugacheva J.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://medbio.ejournal.by/jour/article/view/540">https://medbio.ejournal.by/jour/article/view/540</self-uri><abstract><p>Плазмоклеточные новообразования (ПН) — группа заболеваний, основными представителями которых являются множественная миелома (ММ) и предшествующее ей бессимптомное состояние — моноклональная гаммапатия неопределенного значения (МГНЗ). ПН сопровождаются наличием различных генетических нарушений, возникающих на разных стадиях развития заболевания. К наиболее частым из них относятся изменения в генах клеточного цикла сигнального пути MAPK и репарации ДНК/РНК. В исследовании представлена распространённость мутаций генов KRAS, NRAS, BRAF и полиморфизмов генов АТМ, DIS3 у пациентов с впервые диагностированной ММ и МГНЗ.</p></abstract><trans-abstract xml:lang="en"><p>Plasma cell neoplasms (PN) are a group of diseases, the main representatives of which are multiple myeloma (MM) and its asymptomatic predecessor, monoclonal gammopathy of undetermined significance (MGUS). PN are accompanied by various genetic abnormalities that arise at different stages of the disease. The most common of these include alterations in the cell cycle genes of the MAPK signaling pathway and DNA/RNA repair. This study presents the prevalence of KRAS, NRAS, and BRAF gene mutations and ATM and DIS3 gene polymorphisms in patients with newly diagnosed MM and MGUS.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>множественная миелома</kwd><kwd>моноклональная гаммапатия неопределённого значения</kwd><kwd>генетические изменения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>multiple myeloma</kwd><kwd>monoclonal gammopathy of undetermined significance</kwd><kwd>genetic changes</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">Clinical predictors of long-term survival in newly diagnosed transplant eligible multiple myeloma: an IMWG Research Project / S. Z. 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