HLA-DRB5 and myeloid sarcoma: In agreement with previous observations, the HLA-DRB5*01:01:01~HLA-DRB1*15:01:01:01 haplotype block was significantly associated with susceptibility to MS in this dataset (gTDT: RR = 3.42, CI = 2.65-4.42, p = < 2.20e-16; mTDT: p = 1.61e-07; CC: OR = 3.02, CI = 2.55-3.58, p = < 2.22e-16) (Table 2).