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A molecular genetic study of factor XI deficiency

Hancock, J. F., Wieland, K., Pugh, R. E., Martinowitz, U., Schulman, S., Kakkar, V. V., Kernoff, P. B. and Cooper, David Neil 1991. A molecular genetic study of factor XI deficiency. Blood 77 (9) , pp. 1942-1948.

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Abstract

Factor XI deficiency is a rare bleeding diathesis found predominantly in Ashkenazi Jewish kindreds. A recent study of six Jewish patients identified three distinct mutations (Types I, II, and III) in the factor XI gene that were sufficient to fully define the genotypes of the patients. We have investigated 63 patients with factor XI deficiency and find overall allele frequencies of 44% for the type II mutation, 31% for the type III mutation, and 0% for the type I mutation. Therefore, 25% of the mutant factor XI alleles in our sample remain undefined. However, the distribution of mutant alleles is significantly different between Jewish and non-Jewish populations with hitherto undefined mutations accounting for 84% of the disease alleles in non-Jewish patients. Plasma factor XI:C levels were found to differ significantly between different homozygous and compound heterozygous genotypes and the inheritance of the II/III genotype was found to carry an increased risk of the most severe bleeding tendency.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Publisher: American Society of Hematology
ISSN: 0006-4971
Last Modified: 04 Jun 2017 06:33
URI: http://orca.cf.ac.uk/id/eprint/62102

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