HLA-A and myeloid sarcoma: As regarding the major contributors to MS risk in MHC region (HLA-DRB1*15:01 risk allele and HLA-A*02:01 protective allele), after the stratification of patients belonging to the entire cohort in low- (n = 76) and high- (n = 50) risk groups, we found no evidence of association with any of the investigated metrics.