In addition the inhaled corticosteroids used to treat this patient would have no appreciable effect on bullous pemphigoid, Henoch-Schönlein purpura, IgM/IgG immune complex vasculitis, tumid lupus erythematosus, Well’s syndrome, erythema multiforme or cryopyrin-associated periodic syndrome. The gene discussed is CD40LG; the disease is Henoch-Schoenlein purpura.