HLA-DRB1 and myeloid sarcoma: A model with all identified statistically independent effects (HLA-DRB1*15:01, HLA-DRB1*03:01, HLA-DRB1*13:03, HLA-DRB1*04:04, HLA-DRB1*04:01, HLA-DRB1*14:01, HLA-A*02:01, rs9277489/Leu65 in HLA-DPβ1, rs2516489, HLA-B*37:01, and HLA-B*38:01) accounted for 14.2% of the total variance in MS susceptibility.