DRB1*15:01 and DQB1*06:02 are present in the DR15 haplotype; DPB1*05:01 is separately associated with SLE[24] and is linked to both DRB1*15:01 and DQB1*06:02 in Han Chinese[25]. The gene discussed is HLA-DRB1; the disease is systemic lupus erythematosus.