HLA-DRB5 and myeloid sarcoma: A study on Khuzestan population showed no association between MS risk and DRB5*0101.15 In a survey in Sweden, it was shown that the HLA haplotype involved in MS is the DRB5*0101 allele.16 A positively associated HLA-DRB5 locus with African-American patients with MS was reported.17 Moreover, a significant association with DRB5 variants among Brazilian patients with MS was measured.18 Contrary to this, no association between DRB5*0101 and Japanese patients with MS was shown.19 However, in the current study, DRB1*1501--DRB5*01+ showed no association with MS.