期刊
BRITISH JOURNAL OF HAEMATOLOGY
卷 -, 期 -, 页码 -出版社
WILEY
DOI: 10.1111/bjh.19031
关键词
allogeneic; anti-thymocyte globulin; in vivo; matched unrelated donor; post-transplantation cyclophosphamide
类别
A systematic comparison of transplantation outcomes between two lymphocyte-depleting strategies, ATG and PTCy, in non-myeloablative conditioning for allogeneic haematopoietic stem cell transplantation revealed a significantly lower rate of acute GvHD in the PTCy group compared to the ATG group.
Graft-versus-host disease (GvHD) is a serious complication of allogeneic haematopoietic stem cell transplantation (HSCT). Both anti-thymocyte globulin (ATG) and post-transplant cyclophosphamide (PTCy) are used as lymphocyte-depleting strategies, yet a systematic comparison of transplantation outcomes between these two methods in matched unrelated donors (MUD) transplantations with non-myeloablative conditioning (NMC) is lacking. Adult patients with haematological malignancies who had undergone MUD HSCT with NMC regimens between 2014 and 2021 at 2 centres in Amsterdam (ATG: n = 95, PTCy: n = 90), were included in this retrospective study. Patient characteristics were comparable between the groups. The cumulative incidence of acute GvHD grade II-IV was 48% in the ATG group compared to 21% in the PTCy group (p < 0.001). The 3-year moderate/severe chronic GvHD was similar in both groups (p = 0.69). While the relapse rate was comparable between the groups (ATG 31% vs. PTCy 34%, p = 0.94), non-relapse mortality tended to be higher in the ATG group (17% vs. 9%, p = 0.069). Overall survival was similar in both groups (p = 0.12). In conclusion, PTCy-based regimens resulted in a significantly lower rate of acute GvHD than ATG-containing regimens in MUD transplantations with NMC. Whether PTCy results in improved overall survival as compared to ATG needs to be elucidated in larger prospective studies.
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