Thromb Haemost 1996; 76(02): 253-257
DOI: 10.1055/s-0038-1650564
Original Article
Schattauer GmbH Stuttgart

A Novel Mutation Glyl672→Arg in Type 2A and a Homozygous Mutation in Type 2B von Willebrand Disease

Takeshi Hagiwara
1   The Department of Clinical Pathology, Tokyo Medical College, Tokyo, Japan
,
Hiroshi Inaba
1   The Department of Clinical Pathology, Tokyo Medical College, Tokyo, Japan
,
Shinichi Yoshida
1   The Department of Clinical Pathology, Tokyo Medical College, Tokyo, Japan
,
Keiko Nagaizumi
1   The Department of Clinical Pathology, Tokyo Medical College, Tokyo, Japan
,
Morio Arai
1   The Department of Clinical Pathology, Tokyo Medical College, Tokyo, Japan
,
Hideji Hanabusa
2   Department of Pediatrics, Ogikubo Hospital, Tokyo, Japan
,
Katsuyuki Fukutake
1   The Department of Clinical Pathology, Tokyo Medical College, Tokyo, Japan
› Author Affiliations
Further Information

Publication History

Received 14 November 1995

Accepted after resubmission 06 May 1996

Publication Date:
10 July 2018 (online)

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Summary

Genetic materials from 16 unrelated Japanese patients with von Willebrand disease (vWD) were analyzed for mutations. Exon 28 of the von Willebrand factor (vWF) gene, where point mutations have been found most frequent, was screened by various restriction-enzyme analyses. Six patients were observed to have abnormal restriction patterns. By sequence analyses of the polymerase chain-reaction products, we identified a homozygous R1308C missense mutation in a patient with type 2B vWD; R1597W, R1597Q, G1609R and G1672R missense mutations in five patients with type 2A; and a G1659ter nonsense mutation in a patient with type 3 vWD. The G1672R was a novel missense mutation of the carboxyl-terminal end of the A2 domain. In addition, we detected an A/C polymorphism at nucleotide 4915 with HaeIII. There was no particular linkage disequilibrium of the A/C polymorphism, either with the G/A polymorphism at nucleotide 4391 detected with Hphl or with the C/T at 4891 detected with BstEll.