HLA-DRB5 and myeloid sarcoma: In other words, absence of both loci is associated with healthy group, although no meaningful association was revealed between DRB1*1501+-DRB5*01+ (12.97% vs. 7.87%, P = 0.156, OR = 1.744, 95% CI = 0.803-3.783) and DRB1*1501--DRB5*01+ (15.13% vs. 11.81%, P = 0.403, OR = 1.332, 95% CI = 0.680-2.608) haplotypes and MS risk (Table 1).