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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 Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский онкологический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1028-9984</issn><issn publication-format="electronic">2412-9119</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">700721</article-id><article-id pub-id-type="doi">10.17816/onco700721</article-id><article-id pub-id-type="edn">ZROONG</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Serum soluble E-cadherin level as a prognostic marker in patients with aggressive B-cell lymphomas</article-title><trans-title-group xml:lang="ru"><trans-title>Уровень сывороточного растворимого Е-кадгерина как показатель прогноза у пациентов с агрессивными В-клеточными лимфомами</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-8790-8932</contrib-id><name-alternatives><name xml:lang="en"><surname>Komarov</surname><given-names>Andrey S.</given-names></name><name xml:lang="ru"><surname>Комаров</surname><given-names>Андрей Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>andrey_komarow@inbox.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1136-7396</contrib-id><name-alternatives><name xml:lang="en"><surname>Shestakova</surname><given-names>Valeria G.</given-names></name><name xml:lang="ru"><surname>Шестакова</surname><given-names>Валерия Геннадьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>shestvg@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9777-1220</contrib-id><name-alternatives><name xml:lang="en"><surname>Dolgopolov</surname><given-names>Igor S.</given-names></name><name xml:lang="ru"><surname>Долгополов</surname><given-names>Игорь Станиславович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>irdolg@rambler.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7865-0984</contrib-id><name-alternatives><name xml:lang="en"><surname>Slyusar</surname><given-names>Nikolay N.</given-names></name><name xml:lang="ru"><surname>Слюсарь</surname><given-names>Николай Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>slusar2011@rambler.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-5106-9582</contrib-id><name-alternatives><name xml:lang="en"><surname>Chernyaeva</surname><given-names>Elena A.</given-names></name><name xml:lang="ru"><surname>Черняева</surname><given-names>Елена Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>martus12345@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8398-7001</contrib-id><contrib-id contrib-id-type="spin">7652-0122</contrib-id><name-alternatives><name xml:lang="en"><surname>Rykov</surname><given-names>Maxim Yu.</given-names></name><name xml:lang="ru"><surname>Рыков</surname><given-names>Максим Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Assistant Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, доцент</p></bio><email>wordex2006@rambler.ru</email><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tver Regional Clinical Oncology Dispensary</institution></aff><aff><institution xml:lang="ru">Тверской областной клинический онкологический диспансер</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Tver State Medical University</institution></aff><aff><institution xml:lang="ru">Тверской государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Neurovita Clinical Hospital</institution></aff><aff><institution xml:lang="ru">Клинический госпиталь «НейроВита»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Russian State Social University</institution></aff><aff><institution xml:lang="ru">Российский государственный социальный университет</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-05-04" publication-format="electronic"><day>04</day><month>05</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-06-23" publication-format="electronic"><day>23</day><month>06</month><year>2026</year></pub-date><volume>31</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>5</fpage><lpage>13</lpage><history><date date-type="received" iso-8601-date="2026-01-13"><day>13</day><month>01</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-03-25"><day>25</day><month>03</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Эко-Вектор</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2029-06-23"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://rjonco.com/1028-9984/article/view/700721">https://rjonco.com/1028-9984/article/view/700721</self-uri><abstract xml:lang="en"><p><bold>Background:</bold><bold> </bold>The criteria for therapy effectiveness and disease prognosis remain a pressing issue in oncology. The study of prognostic markers in blood serum is a promising approach for monitoring the course of B-cell lymphomas during treatment.</p> <p><bold>Aim: </bold>To analyze the relationship between the presence of the tumor process and the level of the E-cadherin marker.</p> <p><bold>Methods: </bold>The study included 53 patients (30 men, 23 women) with B-cell lymphomas (stage 1, 1 patient; stage 2A/2B, 9 patients; stage 3A/3B, 9 patients, stage 4A/4B, 34 patients). Soluble E-cadherin (sEcad) levels were measured before treatment initiation and after the third and sixth cycles of chemotherapy. The dynamics of sEcad levels were assessed both in the overall patient group and separately in subgroups of patients without relapse and with lymphoma relapse. The subgroups were comparable in age and disease stage. The control group consisted of 25 individuals (18 men, 7 women) without cancer pathology. The normal value (in patients without tumor disease) was defined as sEcad ≤1.0 ng/mL.</p> <p><bold>Results: </bold>Lymphoma relapse was observed in 22 of 53 patients (42%). Seven patients (13%) died from causes unrelated to the tumor, and one patient (2%) was lost to follow-up. The sEcad level in the overall patient group before treatment was 3.7<bold> </bold>±<bold> </bold>0.4 ng/mL compared with 0.9<bold> </bold>±<bold> </bold>0.1 ng/mL in the control group, <italic>p<bold> </bold></italic>&lt;<bold> </bold>0.0001. During therapy, a decrease in sEcad level was observed after the third and sixth chemotherapy cycles to 2.8<bold> </bold>±<bold> </bold>0.3 ng/mL and 2.4±0.4 ng/mL, respectively.</p> <p>In the subgroups without relapse (<italic>n</italic><bold> </bold>=<bold> </bold>31) and with lymphoma relapse (<italic>n</italic><bold> </bold>=<bold> </bold>22), sEcad levels before treatment, after three cycles, and after six cycles were 3.5<bold> </bold>±<bold> </bold>0.4, 2.4<bold> </bold>±<bold> </bold>0.3 , and 1.5<bold> </bold>±<bold> </bold>0.2 ng/mL versus 4.1<bold> </bold>±<bold> </bold>0.9, 3.4<bold> </bold>±<bold> </bold>0.5 , and 3.5<bold> </bold>±<bold> </bold>0.7 ng/mL (<italic>p</italic> = 0.5, <italic>p</italic> = 0.1 , and <italic>p </italic>= 0.003, respectively). The sEcad level in patients without relapse significantly decreased after the sixth chemotherapy cycle compared with the time of diagnosis (<italic>p</italic><bold> </bold>=<bold> </bold>0.0001). Relapse-free survival (RFS) in the overall patient group was 50.3%<bold> </bold>±<bold> </bold>8% ; the median follow-up period was 43.9<bold> </bold>±<bold> </bold>5.2 months. RFS at sEcad levels ≤1.0 ng/mL and &gt;1.0 ng/mL after six chemotherapy cycles was 58.3<bold> </bold>±<bold> </bold>16% versus 43.3<bold> </bold>±<bold> </bold>11% with a median follow-up of 46.4<bold> </bold>±<bold> </bold>10.3 months versus 28.2<bold> </bold>±<bold> </bold>4.1 months, respectively (<italic>p</italic> = 0.045).</p> <p><bold>Conclusion: </bold>The risk of B-cell lymphoma relapse is lower when sEcad level is ≤1.0 ng/mL after six therapy cycles than at higher values of this marker. A decrease in this marker during treatment indicates a favorable response to therapy. Further studies require larger patient cohorts and standardization of sEcad measurement methods.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование. </bold>Критерии эффективности терапии и прогноз развития болезни остаются актуальной проблемой онкологии. Изучение прогностических маркёров в сыворотке крови — перспективный способ отслеживания динамики В-клеточных лимфом на фоне терапии.</p> <p><bold>Цель. </bold>Проанализировать<bold> </bold>связь между наличием опухолевого процесса и уровнем маркёра Е-кадгерина.</p> <p><bold>Методы.</bold> В исследование вошли 53 пациента (30 мужчин, 23 женщины) с В-клеточными лимфомами (1 стадия — 1 пациент, 2А/2В стадия — 9, 3А/3В — 9, 4А/4В — 34 пациента). Уровень растворимого Е-кадгерина (sEcad) определяли перед началом лечения, после третьего и шестого курсов ХТ. Динамику уровня sEcad осуществляли как в общей группе пациентов, так и раздельно в подгруппах пациентов без рецидива и с рецидивом лимфом. Подгруппы были сравнимы по возрасту и стадиям заболевания. Группу контроля составили 25 человек (18 мужчин, 7 женщин) без онкологической патологии. В качестве нормального значения (у пациентов без опухолевого<bold> </bold>заболевания) принимали уровень sEcad ≤1,0 нг/мл.</p> <p><bold>Результаты. </bold>Рецидив лимфомы наблюдался у 22-х (42%) из 53-х пациентов. Умерло от других причин, не связанных с опухолью, — 7 (13%) пациентов, один (2%) пациент потерян из наблюдения. Уровень sEcad в общей группе пациентов до начала лечения составил 3,7±0,4 нг/мл по сравнению с 0,9±0,1 нг/мл в контрольной группе, <italic>р</italic> &lt;0,0001. В процессе терапии наблюдалось снижение уровня sEcad после третьего и шестого курсов ХТ до 2,8±0,3 нг/мл и 2,4±0,4 нг/мл. В подгруппах без рецидива (<italic>n</italic>=31) и с рецидивом лимфом (<italic>n</italic>=22) уровни sEcad<bold> </bold>до начала терапии, после трёх и шести курсов ХТ, составили 3,5±0,4, 2,4±0,3 и 1,5±0,2 нг/мл против 4,1±0,9, 3,4±0,5 и 3,5±0,7 нг/мл, <italic>р</italic>=0,5, <italic>р</italic>=0,1 и <italic>р</italic>=0,003 соответственно. Уровень sEcad у пациентов без рецидива достоверно снизился после шести курсов ХТ по сравнению с моментом постановки диагноза (<italic>р</italic>=0,0001). Безрецидивная выживаемость (БРВ) в общей группе пациентов составила 50,3±8%, средний период наблюдения 43,9±5,2 мес. БРВ при уровне sEcad ≤1,0 нг/мл и &gt;1,0 нг/мл после шести курсов ХТ составила 58,3±16% против 43,3±11% при среднем сроке наблюдения 46,4±10,3 мес. против 28,2±4,1 мес. соответственно (<italic>р</italic>=0,045).</p> <p><bold>Заключение. </bold>Риск рецидива В-лимфомы ниже при уровне sEcad ≤1,0 нг/мл после шести курсов терапии, чем при более высоких значениях данного маркёра. Снижение этого маркёра во время лечения свидетельствует о хорошем ответе на терапию. Для дальнейших исследований нужно расширить группы наблюдения и стандартизировать методы определения уровня sEcad.</p></trans-abstract><kwd-group xml:lang="en"><kwd>serum soluble E-cadherin</kwd><kwd>intercellular interaction</kwd><kwd>B-cell lymphoma</kwd><kwd>relapse-free survival</kwd><kwd>prognostic factor</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сывороточный растворимый Е-кадгерин</kwd><kwd>межклеточное взаимодействие</kwd><kwd>В-клеточная лимфома</kwd><kwd>безрецидивная выживаемость</kwd><kwd>фактор прогноза</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Sawalha Y. Relapsed/Refractory Diffuse Large B-Cell Lymphoma: A Look at the Approved and Emerging Therapies. 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