Four of the colocalizing eQTLs were shared between three or more diseases and included BACH2 (T1D, AS, and MS), SUOX (ALL, VIT, and T1D), TYK2 (PBC, RA, SLE, and T1D), and ZFP90 (PS, ALL, and UC). The gene discussed is TYK2; the disease is rheumatoid arthritis.