The analysis of the HLA-DRB1 and HLA-DQB1 alleles’ distribution according to categories of MS, as illustrated in Table 5, revealed a high predominance of the RRMS subtype among DRB1*03:01 allele carriers (33.6%), followed by DRB1*15:01 (11.1%), then DRB1*13:01 and DRB1*07:01 (10.5% each). The gene discussed is HLA-DRB1; the disease is myeloid sarcoma.