HLA-A and myeloid sarcoma: In studies of multiple sclerosis (MS), it has been found that in European populations, MS is associated with the HLA‐DR*15 and DQ*06 haplotypes,56, 57 and in Sardinian populations, MS is associated with the HLA‐A*30, B*18, C*05, and DR*03 extended haplotypes and the HLA‐DR*03 and HLA‐DQ*02 alleles.58, 59