Abstract: Mutations in the fibrinogen Aα-chain genes are the most common cause of hereditary renal amyloidosis. The renal histologic appearance in the patient is characteristic and shows striking glomerular enlargement with almost complete obliteration of the normal glomerular architecture by extensive amyloid deposition. In contrast, the vessels and renal tubular interstitium of such patient contains almost no amyloid at all. Here, we described a patient with hereditary fibrinogen amyloidosis, who presented with proteinuria, hypertension and renal failure. He was shown to be heterozygous for the relevant mutation encoding the E526V fibrinogen variant.

Key words: Amyloidosis, Mutation, Fibrinogen, Kidney, Biopsy