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Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Coagulation factor XI gene analysis in three factor XI deficient Austrian patients
Astrid Dossenbach-Glaninger1, Pierre Hopmeier
1Department of Laboratory Medicine, Rudolfstiftung Hospital, Vienna, Austria.
European Journal of Haematology
|March 8, 2006
Summary
Researchers identified two novel mutations and one known mutation in Austrian patients with hereditary factor XI deficiency, revealing the genetic basis of this rare bleeding disorder.
Area of Science:
- Genetics
- Hematology
Background:
- Hereditary factor XI deficiency is a rare bleeding disorder.
- Only one mutation has been previously reported in Austrian patients.
Purpose of the Study:
- To identify the molecular basis of factor XI deficiency in three Austrian patients.
Main Methods:
- Automated fluorescent sequencing of the factor XI gene (promoter, exons 1-15, and flanking introns).
- Confirmation of mutations using restriction enzyme analysis or non-coding strand sequencing.
Main Results:
- Two novel mutations were identified: a nonsense mutation (Gln116X) in exon 5 and a deletion (Ile197 and Asp198) in exon 7.
- A previously reported mutation (IVS 6 +3A>G) was also detected in one patient.
Conclusions:
- The identified mutations interfere with factor XI protein structure and function.
- The Gln116X mutation leads to premature termination and likely mRNA degradation.
- The IVS 6 +3A>G mutation affects splice consensus, impacting protein production.
