Question 1

What is Factor X deficiency?

Accepted Answer

Factor X deficiency is a rare blood clotting disorder where the body lacks enough of a protein called Factor X, which helps the blood clot properly. It can be inherited or acquired.

Question 2

How rare is Factor X deficiency?

Accepted Answer

It is extremely rare, with an estimated prevalence of about 1 in 1 million people worldwide.
Source: National Organization for Rare Disorders (NORD)

Question 3

What causes Factor X deficiency?

Accepted Answer

It may be inherited due to mutations in the F10 gene or acquired through liver disease, vitamin K deficiency, or use of anticoagulants.
Source: MedlinePlus (NIH)

Question 4

What are the symptoms of Factor X deficiency?

Accepted Answer

Symptoms may include easy bruising, frequent nosebleeds, prolonged bleeding from cuts, joint bleeds, or in severe cases, internal bleeding.

Question 5

How is Factor X deficiency diagnosed?

Accepted Answer

Diagnosis involves blood tests that assess clotting function, including a prothrombin time (PT), activated partial thromboplastin time (aPTT), and a specific Factor X activity assay.

Question 6

How is Factor X deficiency managed?

Accepted Answer

Management may include replacement therapies using plasma-derived Factor X concentrates or fresh frozen plasma, especially before surgery or after bleeding episodes.

Question 7

What does Factor X do in the body?

Accepted Answer

Factor X is an essential clotting protein that plays a central role in the coagulation cascade. It helps convert prothrombin into thrombin, leading to clot formation.

Question 8

Is Factor X dependent on vitamin K?

Accepted Answer

Yes, Factor X is a vitamin K-dependent clotting factor. A deficiency in vitamin K can impair its production and lead to acquired Factor X deficiency.

Question 9

What is another name for Factor X?

Accepted Answer

Factor X is also known as Stuart-Prower factor, named after the first two patients identified with the deficiency.

Question 10

Is Factor X deficiency inherited or acquired?

Accepted Answer

It can be either. Inherited cases are caused by genetic mutations and are usually present from birth, while acquired cases may result from other medical conditions or treatments.

Factor X Deficiency Medications