HLA-DRB1 and sarcoidosis: Variant HLA-DRB1*01:01 was previously reported as protective against sarcoidosis in the population of the United Kingdom, Netherlands, Finland, and Japan, where it was identified as part of the haplotype DQA1*01:01 ∼ DQB1*05:01 ∼ DRB1*01:01; all these variants we report to be in LD and act as protective against sarcoidosis development (17, 20, 21).