GZMB and myeloid neoplasm: The current study showed that the granzyme B G/G or A/G genotype at rs8192917 (2364A>G) in the donor side representing the triple variant RAH granzyme B was associated with a significantly better OS and TRM compared to the granzyme A/A genotype, corresponding to wild type QPY granzyme B, for patients with myeloid malignancies receiving HLA-matched unrelated BMT through the JMDP.