HLA-DRB1 and myeloid sarcoma: Thus, while primacy of HLA-DRB1*15 or HLA-DQB1*0602 has not been conclusive in the African populations that show greater haplotypic diversity than Europeans and distinct patterns of linkage disequilibrium, a potential contribution of HLA-DQB1*0602 to MS susceptibility could still be inferred.