HLA-DRB1 and systemic lupus erythematosus: Over-representation of the DRB1*1501 HLA allele (and/or the DRB1*1501-DQA1*0102-DQB1*0602 haplotype) is also one of the most frequently reported genetic findings of patients with diverse immunologic diseases, including Goodpasture's syndrome, multiple sclerosis, systemic lupus erythematosus (SLE), and sarcoidosis [19]–[24].