Immunoglobulin A (IgA) pemphigus, linear IgA bullous disease (LABD) and dermatitis herpetiformis (DH) are blistering skin diseases characterized by aberrant deposits of IgA autoantibodies in the skin as well as dense inflammatory infiltrates that are dominated by neutrophils 2. Here, CD79A is linked to dermatitis herpetiformis, familial.