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  • Title: Combined deficiency of factor V and factor VIII. A report of another case.
    Author: Girolami A, Violante N, Cella G, Patrassi G.
    Journal: Blut; 1976 Jun; 32(6):415-22. PubMed ID: 1276481.
    Abstract:
    A patient with combined factor V and factor VIII deficiency is presented. The bleeding manifestations were: easy bruising, post-traumatic bleeding, bleeding after tooth extractions. The main laboratory feature was a prolonged partial thromboplastin time which was corrected by the addition of adsorbed normal plasma but not by the addition of normal serum, hemophilia A plasma of another patient with combined factor V and factor VIII deficiency. The thromboplastin generation test was clearly abnormal and was corrected by the addition of adsorbed normal plasma but not by addition of normal serum. Prothrombin consumption was also defective. Prothrombin time was slightly prolonged too, Thrombin time, platelet and vascular tests were within normal limits and there was no hyperfibrinolysis. Factor VIII was 8% of normal, whereas factor V was 14% of normal. Factor VIII associated antigen was normal. All other clotting factors were within normal limits. The parents of the propositus were consanguineous (first cousins) but had normal factor V and factor VIII activity and normal factor VIII antigen. The same was true for other family members. The hereditary transmission of the condition appears autosomal recessive.
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