Interestingly, variants in other autoimmunity genes associated with IgAD (CLEC16A, ATG13, and AHI1) are also associated with multiple sclerosis (MS) (van Luijn et al., 2015; Graves et al., 2018), though evidence for shared causal variants between IgAD and MS in these regions has not been reported. This evidence concerns the gene ATG13 and myeloid sarcoma.