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Updated: Nov 20, 2025

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Familial Multiple Coagulation Factor Deficiencies (FMCFDs) in a Large Cohort of Patients-A Single-Center Experience
Barbara Preisler1, Behnaz Pezeshkpoor1, Atanas Banchev2
1Institute of Experimental Hematology and Transfusion Medicine, University Clinic Bonn, 53127 Bonn, Germany.
Insights
Familial multiple coagulation factor deficiencies (FMCFDs) are rare inherited bleeding disorders. Genetic analysis revealed diverse causes, including co-inheritance of deficiencies and single-gene defects, highlighting the need for molecular testing to avoid misdiagnosis.
Area of Science:
- Hematology
- Genetics
- Molecular Biology
Background:
- Familial multiple coagulation factor deficiencies (FMCFDs) are inherited disorders characterized by reduced activity of at least two clotting factors.
- These conditions lead to variable bleeding or thrombotic symptoms, complicating patient management.
- Identifying the genetic basis of FMCFDs is crucial for accurate diagnosis and treatment.
Purpose of the Study:
- To identify the underlying genetic defects in patients diagnosed with familial multiple coagulation factor deficiencies.
- To characterize the genetic landscape of FMCFDs in a large patient cohort.
Main Methods:
- Collected activity levels from a large cohort of laboratory-diagnosed FMCFD patients.
- Performed next-generation sequencing for genetic analysis.
Main Results:
- Identified 52 FMCFDs arising from co-inheritance of single-factor deficiencies, involving various clotting factors with Factor VII (FVII) deficiency being most prevalent.
- Discovered 21 FMCFDs due to single-gene defects, including combined Factor V/Factor VIII (FV/FVIII) deficiency and vitamin K-dependent coagulation factor deficiency.
- Identified nine patients with combined FVII and Factor X (FX) deficiency caused by a partial deletion on chromosome 13.
Conclusions:
- FMCFDs are rare, heritable hemostasis abnormalities classified as orphan diseases.
- Comprehensive screening of residual clotting factor activities combined with molecular genetic analysis is essential to prevent under- and misdiagnosis.
- Accurate genetic diagnosis is key for effective management of these rare bleeding disorders.
Background:
Familial multiple coagulation factor deficiencies (FMCFDs) are a group of inherited hemostatic disorders with the simultaneous reduction of plasma activity of at least two coagulation factors. As consequence, the type and severity of symptoms and the management of bleeding/thrombotic episodes vary among patients. The aim of this study was to identify the underlying genetic defect in patients with FMCFDs.
Methods:
Activity levels were collected from the largest cohort of laboratory-diagnosed FMCFD patients described so far. Genetic analysis was performed using next-generation sequencing.
Results:
In total, 52 FMCFDs resulted from coincidental co-inheritance of single-factor deficiencies. All coagulation factors (except factor XII (FXII)) were involved in different combinations. Factor VII (FVII) deficiency showed the highest prevalence. The second group summarized 21 patients with FMCFDs due to a single-gene defect resulting in combined FV/FVIII deficiency or vitamin K-dependent coagulation factor deficiency. In the third group, nine patients with a combined deficiency of FVII and FX caused by the partial deletion of chromosome 13 were identified. The majority of patients exhibited bleeding symptoms while thrombotic events were uncommon.
Conclusions:
FMCFDs are heritable abnormalities of hemostasis with a very low population frequency rendering them orphan diseases. A combination of comprehensive screening of residual activities and molecular genetic analysis could avoid under- and misdiagnosis.
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