In humans, a number of common variants in linkage disequilibrium (LD) at the BACH2 locus have been consistently associated with autoimmune conditions, including type 1 diabetes (2), celiac disease (3, 4), autoimmune thyroid disease (5, 6), Crohn's disease (7), multiple sclerosis (8), vitiligo (9), and rheumatoid arthritis (10). The gene discussed is BACH2; the disease is autoimmune thyroid disease.