While HLA DRB1*15 was associated with increasing MS risk, there was an association of HLA-DRB1*03 and HLA-DRB1*04 with the disease phenotypic group, and protective roles of HLA-DRB1*07 and HLA-DRB1*11 phenotypes against MS incidence [39]. The gene discussed is HLA-DRB1; the disease is myeloid sarcoma.