Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in children

Langerhans cell histiocytosis (LCH) is a disease caused by clonal expansion of CD1a+/CD207+ cells and is characterized by organ involvement and dysfunction. Treatment of LCH in children is risk-adapted, and multisystem LCH requires systemic therapy. Although systemic treatments such as chemotherapy...

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Main Authors: Guangqiang Meng, Saran Feng, Yan Wang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-01-01
Series:Frontiers in Immunology
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Online Access:https://www.frontiersin.org/articles/10.3389/fimmu.2025.1345855/full
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author Guangqiang Meng
Saran Feng
Yan Wang
author_facet Guangqiang Meng
Saran Feng
Yan Wang
author_sort Guangqiang Meng
collection DOAJ
description Langerhans cell histiocytosis (LCH) is a disease caused by clonal expansion of CD1a+/CD207+ cells and is characterized by organ involvement and dysfunction. Treatment of LCH in children is risk-adapted, and multisystem LCH requires systemic therapy. Although systemic treatments such as chemotherapy and BRAF/MEK inhibitors have improved the cure rate of LCH, disease reactivation rates remain 30%, and eventually some patients progress to relapse-refractory LCH. Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a promising salvage treatment strategy for children with relapse-refractory LCH. However, many questions such as the efficacy and indications of allo-HSCT, as well as suitable conditioning regimen are still undetermined for children with LCH. This review aimed to provide an update on advances in allo-HSCT for LCH in children, including indications, stem cell sources, conditioning regimens, chimerism, transplant-related complications, outcomes, and treatment of relapse.
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spelling doaj-art-752240ca266741dea29fca3a22f9cb732025-01-28T06:40:59ZengFrontiers Media S.A.Frontiers in Immunology1664-32242025-01-011610.3389/fimmu.2025.13458551345855Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in childrenGuangqiang MengSaran FengYan WangLangerhans cell histiocytosis (LCH) is a disease caused by clonal expansion of CD1a+/CD207+ cells and is characterized by organ involvement and dysfunction. Treatment of LCH in children is risk-adapted, and multisystem LCH requires systemic therapy. Although systemic treatments such as chemotherapy and BRAF/MEK inhibitors have improved the cure rate of LCH, disease reactivation rates remain 30%, and eventually some patients progress to relapse-refractory LCH. Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a promising salvage treatment strategy for children with relapse-refractory LCH. However, many questions such as the efficacy and indications of allo-HSCT, as well as suitable conditioning regimen are still undetermined for children with LCH. This review aimed to provide an update on advances in allo-HSCT for LCH in children, including indications, stem cell sources, conditioning regimens, chimerism, transplant-related complications, outcomes, and treatment of relapse.https://www.frontiersin.org/articles/10.3389/fimmu.2025.1345855/fullLangerhans cell histiocytosisallogeneic hematopoietic stem cell transplantationmyeloablative conditioningreduced intensity conditioningchimerism
spellingShingle Guangqiang Meng
Saran Feng
Yan Wang
Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in children
Frontiers in Immunology
Langerhans cell histiocytosis
allogeneic hematopoietic stem cell transplantation
myeloablative conditioning
reduced intensity conditioning
chimerism
title Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in children
title_full Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in children
title_fullStr Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in children
title_full_unstemmed Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in children
title_short Advances in allogeneic hematopoietic stem cell transplantation for Langerhans cell histiocytosis in children
title_sort advances in allogeneic hematopoietic stem cell transplantation for langerhans cell histiocytosis in children
topic Langerhans cell histiocytosis
allogeneic hematopoietic stem cell transplantation
myeloablative conditioning
reduced intensity conditioning
chimerism
url https://www.frontiersin.org/articles/10.3389/fimmu.2025.1345855/full
work_keys_str_mv AT guangqiangmeng advancesinallogeneichematopoieticstemcelltransplantationforlangerhanscellhistiocytosisinchildren
AT saranfeng advancesinallogeneichematopoieticstemcelltransplantationforlangerhanscellhistiocytosisinchildren
AT yanwang advancesinallogeneichematopoieticstemcelltransplantationforlangerhanscellhistiocytosisinchildren