Overall results
The 6-year OS estimates for the ABO-matched, major incompatible, minor incompatible, and bidirectional incompatible groups were 86.59 ± 3.31%, 94.12 ± 1.47%, 87.91 ± 4.04%, and 100 ± 0%, respectively (P = 0.2540) (Fig. 1). Of the total cohort, 18 patients died, with the causes of mortality being cGVHD, severe infection, and TMA.