Fig. 4.

Overall survival (OS) and failure-free survival. A OS and B failure-free survival were stratified according to whether patients receiving MSCs post-randomization. And for these analysis, the eight patients in the control group who crossed over to receive MSCs are included in the control group. Failure-free survival was defined as time from randomization to relapse or progression of hematologic disease, non-relapse-related death or the addition of new systemic therapy for aGVHD, and the competing risk was the onset of chronic graft-versus-host disease (cGVHD). *P < 0.05, **P < 0.001