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Molecular analysis of factor XII gene in Thai patients with factor XII deficiency.

Abstract
Factor XII is the initiating protein of the intrinsic coagulation pathway. It activates factor X after being activated by the so called 'contact system'. Both congenital factor XII deficiency, usually without bleeding symptoms, and several factor XII polymorphisms with possible thrombotic tendency have been described. In the presented work, two Thai patients with congenital factor XII deficiency have been studied by utilizing a PCR single-stranded conformation polymorphism (PCR-SSCP) method followed by direct sequencing. A new mutation of factor XII gene in the exon 7, c.583delC or p.H195fsX250, has been discovered and variable factor activities resulting from different mutations with or without polymorphisms are demonstrated. The other case had a homozygous missense mutation, c.G218C. Heterozygotes of this mutation, found in 1.9% (2/107) of healthy Thai volunteers, showed low factor XII activities suggesting that it is a deleterious mutation.
AuthorsPon Singhamatr, Somjai Kanjanapongkul, Ponlapat Rojnuckarin
JournalBlood coagulation & fibrinolysis : an international journal in haemostasis and thrombosis (Blood Coagul Fibrinolysis) Vol. 24 Issue 6 Pg. 599-604 (Sep 2013) ISSN: 1473-5733 [Electronic] England
PMID23492916 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Factor XII
Topics
  • Child
  • Factor XII (genetics, metabolism)
  • Factor XII Deficiency (blood, genetics)
  • Female
  • Gene Frequency
  • Humans
  • Mutation
  • Thailand

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