Vancomycin-induced linear IgA disease with autoantibodies to BP180 and LAD285

Linear IgA disease (LAD) is an acquired autoimmune subepidermal bullous dis ease characterized by the linear deposition of IgA at the basement membrane zone. A minority of cases are induced by drugs, of which the most frequent ly implicated is vancomycin. The target antigens in idiopathic LAD are hete rogeneous, but have not previously been reported in vancomycin-induced LAD. We report three cases, and in two of these we investigated the target anti gens. In both we identified IgA antibodies to LAD285 and IgA and IgG antibo dies (dual response) to BP180.