HLA-DRB1 and myeloid sarcoma: Despite this recent explosion in the number of identified MS-associated regions, however, the association of MS-susceptibility with the HLA-DRB1*15:01~HLA-DQB1*06:02 haplotype of the human leukocyte antigens (HLA), inside the MHC, has been known for decades [11, 15–22].