HLA-DRB1 and myeloid sarcoma: The earlier study was incorporated into the later analysis of ∼465,000 single nucleotide polymorphisms (SNPs) in 9,772 persons with MS (PwMS) of European ancestry.13,14 One variant met genome-wide significance and was in high linkage disequilibrium (LD; EUR r2 = 0.70) with HLA-DRB1*15:01; no other locus contained SNPs with p-values <1 × 10−5 14.