BACH2 and eosinophilic granulomatosis with polyangiitis: There was clear evidence of association of both EGPA subgroups with variants at the TSLP, BCL2L11 and CDK6 loci, and suggestive evidence for BACH2, Chromosome 10, and LPP. A number of these loci have previously been shown to be associated with other autoimmune diseases, including PSC (Supplementary Table 10).