The association and frequency of the DR2 haplotypes, including DRB5*01--DRB1*1501+-DQB1*0602+, DRB5*01+-DRB1*1501+-DQB1*0602-, DRB5*01+-DRB1*1501+-DQB1*0602+, DRB5*01+-DQB1*0602-, DRB5*01--DQB1*0602-, DRB5*01+-DQB1*0602+, and DRB5*01--DQB1*0602+, were investigated in the MS patients and compared with the healthy controls (Table 1). The gene discussed is HLA-DRB1; the disease is myeloid sarcoma.