Renal amyloidosis is not a frequent disease: its annual frequency is approximately 2.5-2.8% of all renal biopsies. Individual cases are normally rare and for this reason clinical findings and therapeutic results obtained by clinical multicentre studies are well considered. This review describes the clinical and therapeutic aspects of renal amyloidosis and refers particularly to the results obtained by the Italian Study Group for renal amyloidosis and by the multicentre Italian study protocol for AL amyloidosis.