FACTOR V DEFICIENCY

Scientifically reviewed | Last updated May 19, 2025
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F5

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Hereditary factor V deficiency is a rare coagulation disorder.

 

Also called

Parahemophilia

 

Symptoms

The deficiency can manifest at any age, with the most severe forms appearing early in life. The clinical phenotype is highly variable and ranges from inconspicuous to recurrent severe bleeding events.

 

Symptoms include:

 

  • Excessive and prolonged bleeding during or after surgery, childbirth or trauma
  • Menorrhagia (heavy menstrual bleeding).

 

In severe forms of the disease, there may be a risk of intracranial, pulmonary or gastrointestinal bleeding, although life-threatening manifestations of factor V deficiency are rare.

 

Frequency

The estimated incidence is 1:1 million in the autosomal recessive form.

 

Causes

It is caused by pathogenic variants in the F5 gene.

 

Inheritance

Factor V deficiency is inherited in an autosomal recessive manner.

 

Diagnosis

The diagnosis is made by routine coagulation tests and measurements of factor V activity.

GENES
F5
HOW CAN YOU GET TESTED?
Step 1: Visit healthcare professional
Step 2: Sample collection (blood or buccal swab)
Step 3: Sequencing performed at our accredited laboratory
Step 4: Medical report
Step 5: Genetic counselling
FAQ

What is factor V deficiency?

What is the difference between factor V deficiency and factor V Leiden?

Is factor V deficiency hereditary?

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