Familial amyloid polyneuropathy with genetic anticipation associated to a gly47glu transthyretin variant in an Italian kindred.

Abstract

The most frequent localization of amyloid in transthyretin (TTR) mutations is in the peripheral nerve, causing familial amyloidpolyneuropathy (FAP). It is generally accompanied by involvement of other organs such as the myocardium and kidney. To date, over 70 TTR point mutations have been reported in literature, with different phenotypes depending on the location of the mutation in the TTR gene. This paper deals with a point mutation in exon 2 position 47 of the TTR gene, encoding the substitution of glycine with glutamate. The mutation was found in an Italian family with 5 patients over 3 generations. The phenotype was characterised by peripheral neuropathy and autonomic dysfunction, associated in some patients with cardiomyopathy and renal involvement. The symptoms were very severe and the patients did not survive long, thus suggesting the aggressive nature of the pathological process. Moreover, in the succeeding generations of this family, there was genetic anticipation in the age of onset of the disease.

• Authors: Elisabetta Pelo, Luigi Da Prato, Mauro Ciaccheri, Gabriele Castelli, Franca Gori, Assunta Pizzi, Francesca Torricelli, Giampiero Marconi
• Journal: Amyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis (Amyloid) Vol. 9 Issue 1 Pg. 35-41 (Mar 2002) ISSN: 1350-6129 [Print] England
• PMID: 12000196 (Publication Type: Case Reports, Journal Article)

Chemical References

• Prealbumin
• Glutamic Acid
• DNA
• Glycine

Topics

• Adult
• Amino Acid Sequence
• Amyloid Neuropathies, Familial (genetics)
• Base Sequence
• DNA
• Female
• Glutamic Acid (genetics)
• Glycine (genetics)
• Humans
• Italy
• Male
• Middle Aged
• Pedigree
• Point Mutation
• Prealbumin (genetics)