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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">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1162</article-id><article-id pub-id-type="doi">10.24287/j.1162</article-id><article-id pub-id-type="edn">YHPBMR</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL OBSERVATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</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">Thiamine-responsive megaloblastic anemia in two Ingush siblings with a homozygous <italic>SLC19A2</italic> c.1223+1G&gt;A variant</article-title><trans-title-group xml:lang="ru"><trans-title>Тиамин-зависимая мегалобластная анемия у двух сиблингов ингушского происхождения с гомозиготным вариантом гена <italic>SLC19A2</italic> c.1223+1G&gt;A</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0411-9485</contrib-id><name-alternatives><name xml:lang="en"><surname>Gurzhikhanova</surname><given-names>Medina Kh.</given-names></name><name xml:lang="ru"><surname>Гуржиханова</surname><given-names>Медина Хароновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>a junior researcher at the Department of Optimization of Treatment and Prevention of Complications after Hematopoietic Stem Cell Transplantation </p></bio><bio xml:lang="ru"><p>младший научный сотрудник отдела оптимизации лечения и профилактики осложнений трансплантации гемопоэтических стволовых клеток</p></bio><email>medina.gurzhihanova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2958-1705</contrib-id><name-alternatives><name xml:lang="en"><surname>Salimova</surname><given-names>T. Yu.</given-names></name><name xml:lang="ru"><surname>Салимова</surname><given-names>Т. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>medina.gurzhihanova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8571-5395</contrib-id><name-alternatives><name xml:lang="en"><surname>Goronkova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Горонкова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>medina.gurzhihanova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7634-2053</contrib-id><name-alternatives><name xml:lang="en"><surname>Raykina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Райкина</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>medina.gurzhihanova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0016-6698</contrib-id><name-alternatives><name xml:lang="en"><surname>Maschan</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Масчан</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>medina.gurzhihanova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1735-0093</contrib-id><name-alternatives><name xml:lang="en"><surname>Maschan</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Масчан</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>medina.gurzhihanova@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-08-19" publication-format="electronic"><day>19</day><month>08</month><year>2026</year></pub-date><volume>25</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>214</fpage><lpage>218</lpage><history><date date-type="received" iso-8601-date="2026-07-23"><day>23</day><month>07</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-07-28"><day>28</day><month>07</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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://hemoncim.com/jour/article/view/1162">https://hemoncim.com/jour/article/view/1162</self-uri><abstract xml:lang="en"><p>Thiamine-responsive megaloblastic anemia (Rogers syndrome; OMIM #249270) is a rare autosomal recessive disorder caused by pathogenic variants in the <italic>SLC19A2</italic> gene, which encodes the high-affinity thiamine transporter type 1. The disease is characterized by the classic triad of symptoms: megaloblastic anemia, non-autoimmune diabetes mellitus, and progressive sensorineural hearing loss. We report two sibling brothers of Ingush origin with genetically confirmed Rogers syndrome. In the older brother (3 years), the disease manifested with the classic triad in combination with cardiomyopathy, cardiac arrhythmias, and ophthalmologic pathology; the diagnosis was established in the setting of a fully developed clinical picture. In the younger brother (11 months), the disease was suspected based on a positive family history and early laboratory abnormalities (anemia, hyperglycemia, hyperlactatemia), which allowed initiation of thiamine replacement therapy prior to the onset of irreversible clinical symptoms. In both patients, whole genome sequencing identified a homozygous SLC19A2 variant c.1223+1G&gt;A. At follow-up 1.5 years later, the younger brother, while on continuous thiamine therapy, retained normal hearing and showed no evidence of anemia or diabetes mellitus.</p></abstract><trans-abstract xml:lang="ru"><p>Тиамин-зависимая мегалобластная анемия, или синдром Роджерса (OMIM #249270), – редкое аутосомно-рецессивное заболевание, обусловленное патогенными вариантами гена <italic>SLC</italic><italic>19</italic><italic>A</italic><italic>2</italic>, кодирующего высокоаффинный транспортер тиамина 1-го типа. Заболевание характеризуется классической триадой симптомов: мегалобластная анемия, неаутоиммунный сахарный диабет и прогрессирующая сенсоневральная тугоухость. Мы представляем наблюдение двух родных братьев ингушского происхождения с генетически подтвержденным синдромом Роджерса. У старшего брата (3 года) заболевание дебютировало классической триадой симптомов в сочетании с кардиомиопатией, нарушениями ритма сердца и офтальмологической патологией, диагноз был установлен на фоне развернутой клинической картины. У младшего брата (11 месяцев) заболевание было заподозрено на основании отягощенного семейного анамнеза и ранних лабораторных изменений (анемия, гипергликемия, гиперлактатемия), что позволило начать заместительную терапию тиамином до манифестации необратимых клинических симптомов. У обоих пациентов методом полногеномного секвенирования выявлена гомозиготная мутация гена <italic>SLC</italic><italic>19</italic><italic>A</italic><italic>2</italic> c.1223+1G&gt;A. При контрольном обследовании через 1,5 года у младшего брата на фоне непрерывной терапии тиамином сохранен слух, отсутствуют анемия и сахарный диабет.</p></trans-abstract><kwd-group xml:lang="en"><kwd>thiamine-responsive megaloblastic anemia</kwd><kwd>Rogers syndrome</kwd><kwd>SLC19A2</kwd><kwd>thiamine transporter type 1</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>тиамин-зависимая мегалобластная анемия</kwd><kwd>синдром Роджерса</kwd><kwd>SLC19A2</kwd><kwd>транспортер тиамина 1-го типа</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Rogers L.E., Porter F.S., Sidbury J.B. Thiamine-responsive megaloblastic anemia. J Pediatr 1969;74(4):494–504.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Oishi K., Hofmann S., Diaz G.A., Brown T., Manwani D., Ng L. et al. 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