From the fine mapping of the HLA region performed by McElroy et al. [7] with 500 African Americans MS patients and 500 healthy controls, we obtained the genotype of the DRB1*1501 allele and the rs9270986 SNP, which in addition to the DRB5 was eQTL for DRB1 in all human populations (Table S1). This evidence concerns the gene HLA-DRB1 and myeloid sarcoma.