Factor V Leiden thrombophilia is a genetic disorder that increases the risk of abnormal blood clot formation. Factor V Leiden thrombophilia is a genetic condition that increases the risk of developing ...

Acquired Factor V inhibitors represent a rare and heterogeneous group of coagulation disorders, characterised by the sudden emergence of autoantibodies that neutralise factor V, a critical cofactor in ...

Dear Dr. Roach: My son is 32 years old and developed a superficial blood clot in his arm near the elbow. They tested him for the factor V Leiden (FVL) mutation, and he is positive and heterozygous.

You might have heard that “you can't choose your family,” and the same applies to the genes you inherit from them. Everyone is born with two copies of the factor V (pronounced “factor five”) gene.