[Fc gamma receptors: structure, function, and clinical significance].

Fc gamma receptors are a group of three different receptors with several subtypes. They are widely distributed on many cells of the immune system and contribute to the pathogenesis of immune complex- and autoantibody-mediated diseases such as vasculitis, rheumatoid arthritis, idiopathic thrombocytopenic purpura or autoimmune neutropenia. This review focuses on the structure, distribution and function in Fc gamma receptors and their subtypes.