HLA-DRB1 and myeloid sarcoma: Remarkably, there was a significant overlap with genetic variants associated with MS risk (Fig. 2B, OR=32.1, p=1.3×10−12) and severity (Fig. 2B, OR=180.6, p=7.54×10−3) including MS susceptibility alleles, HLA-DRB1*04:04, HLA-A*02:01 and to a lesser extent, HLA-DRB1*15:01.