HLA-DRB1 and myeloid sarcoma: Moreover, in the Ashkenazi group, the consensus HLA type II haplotype for individuals with MS, DRB1*1501, DQA1*0102, and DQB1*0602, is more common than in the Iraqi Jewish cohort, further increasing the genetic heterogeneity between the two cohorts and potentially affecting the rate of MS progression (102, 104).