HLA-DPB1 and myeloid sarcoma: Those of HLA-DRB1*01:01, DRB1*09:01, DRB1*13:02 and DPB1*04:01 were lower in MS patients than in healthy controls (pcorr = 0.001, pcorr < 0.001, pcorr < 0.001 and pcorr = 0.006, respectively).