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http://dx.doi.org/10.1038/s41408-022-00771-wDOI Listing

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Post-transplant cyclophosphamide with post-engraftment anti-thymocyte globulin reduce moderate to severe chronic graft-versus-host disease in peripheral stem cell transplantation from HLA-matched unrelated and haploidentical donors.

Bone Marrow Transplant

January 2025

Shanghai Institute of Hematology, Blood and Marrow Transplantation Center, Collaborative Innovation Center of Hematology, Department of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Article Synopsis
  • Post-transplantation cyclophosphamide (PTCy) used with tacrolimus and low-dose anti-thymocyte globulin (PTCy-ATG) shows advantages in preventing chronic graft-versus-host disease (cGVHD) in patients who underwent stem cell transplants.
  • In a study of 71 patients with myeloid malignancies, the PTCy-ATG group had a lower incidence of moderate to severe cGVHD (11.5%) and a single case of bronchiolitis obliterans compared to control groups.
  • The study results indicated higher disease-free survival (94%) and overall survival (93%) rates in the PTCy-ATG group, suggesting the need for
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Mycophenolate mofetil (MMF) is commonly included in post-transplant cyclophosphamide (PTCy) based graft-versus-host disease (GVHD) prophylaxis after haploidentical (haplo) hematopoietic cell transplant (HCT). In the non-PTCy setting, higher MMF dose/kg has been shown to reduce rates of acute graft-versus-host disease (GVHD). When used in conjunction with PTCy, MMF is dosed at 15 mg/kg three times daily up to a maximum dose of 3 g/day.

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The low-dose anti-thymocyte globulin (ATG) plus low-dose post transplantation cyclophosphamide (PTCy) -based (low-dose ATG/PTCy-based) regimen had a promising activity in preventing of graft-versus-host disease (GVHD) in adult patients. However, its efficacy in pediatric patients remain to be defined. Here, we presented the findings from 35 pediatric patients undergoing haploidentical peripheral blood stem cell transplantation (haplo-PBSCT) with the new regimen for GVHD prophylaxis.

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Background: Anti-thymocyte globulin (ATG) based graft versus host disease (GVHD) prophylaxis is widely used for mismatched unrelated donor allogeneic hematopoietic cell transplantation (HCT) although optimal dose remains unclear. Although recent literature suggested improved outcomes with PTCy-based regimens when compared to ATG-based regimens these studies used doses of ATG ≥5 mg/kg. Thus, we analyzed outcomes of HLA 9/10 MMUD allogeneic HCTs using lower-dose ATG-based regimens at our center.

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This study aimed to assess the efficacy of dual T-cell suppression using individually tailored doses of antithymocyte globulin (ATG) and attenuated dose of post-transplant cyclophosphamide (PTCy) in haploidentical hematopoietic stem cell transplantation (haplo-HSCT). We conducted a retrospective analysis of 78 adults with acute leukemia or myelodysplastic syndrome who underwent haplo-HSCT using intravenous busulfan and fludarabine conditioning. Thirty-two patients received attenuated ATG/PTCy, while 46 patients received ATG (7.

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