XAF1 and sarcoidosis: Results (Table 3) show suggestive evidence for SNP rs6502976 as an eQTL for XAF1 through linkage disequilibrium with two other SNPs (rs9891567 and rs1533031) that have been directly genotyped in studies of European individuals; both of these SNPs are also associated with risk of sarcoidosis (Figure 2).