Two novel mutations (Pro864His, Val867Glu) causing type 2A von Willebrand disease and affecting a single restriction site in exon 28.

Abstract:

:We detected two transversions in two unrelated Italian patients with type 2A von Willebrand disease (VWD): a C to A at nucleotide 8821 and a T to A at nucleotide 8830, resulting in the missense mutations Pro864His and Val867Glu respectively. Both mutations were in the heterozygous form and abolished the BstXI restriction site in exon 28 of the VWF gene. In both mutations plasma VWF multimer pattern improved by antiproteases. Moreover, DDAVP normalized plasma VWF multimers in the Pro864His patient, especially when protease inhibitors were present. These new mutations appear to be of the 2A VWD subtype due to the increased susceptibility to proteases.

journal_name

Br J Haematol

authors

Bernardi F,Casonato A,Marchetti G,Gemmati D,Bizzaro N,Pontara E,Girolami A

doi

10.1046/j.1365-2141.1998.01064.x

subject

Has Abstract

pub_date

1998-12-01 00:00:00

pages

885-7

issue

3

eissn

0007-1048

issn

1365-2141

journal_volume

103

pub_type

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