Differential effect of graft-versus-host disease on survival in acute leukemia according to donor type
2021
Purpose: The anti-leukemic activity of allogeneic hematopoietic cell transplantation (HCT) depends on both the intensity of conditioning regimen and the strength of the graft-versus-leukemia (GVL) effect. However, it is unclear whether the sensitivity of the GVL effects differs between donor type and graft source. Experimental Design: We retrospectively evaluated the effect of acute and chronic graft-versus-host disease (GVHD) on transplant outcomes for adults with acute leukemia (n = 6,548) between 2007 and 2017 using a Japanese database. In all analyses, we separately evaluated three distinct cohorts based on donor type [(8/8 allele-matched sibling donor, 8/8 allele-matched unrelated donor, and unrelated single-cord blood (UCB)]. Results: The multivariate analysis, in which the development of GVHD was treated as a time-dependent covariate, showed a reductive effect of grade I–II acute GVHD on treatment failure (defined as 1-leukemia-free survival; P Conclusions: These data suggested that the development of mild GVHD could improve survival after UCB transplantation for acute leukemia.
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