“…Previous studies clearly demonstrated that absolute lymphocyte count (ALC) recovery, which may be a useful surrogate marker of immune reconstitution, predicted survival following CBT [ 1 , 2 , 3 , 4 ] as well as allogeneic hematopoietic cell transplantation (HCT) from adult donors [ 5 , 6 ]. However, various thresholds and time points of ALC recovery following CBT have been reported to be prognostic factors for CBT [ 1 , 2 , 3 , 4 ]. Therefore, we evaluated the optimal time and threshold of ALC recovery as a prognostic factor following CBT.…”