Definition:

FVII deficiency is a rare autosomal recessive hemorrhagic condition of variable severity. FVII is a zymogen for a vitamin K-dependent serine protease essential for the initiation of blood coagulation. Complete absence of FVII activity in plasma is usually incompatible with life, and individuals die shortly after birth due to severe hemorrhage. The majority of individuals with mutations in their F7 genes, however, are either asymptomatic or the clinical phenotype is unknown.