Summary
Due to the wide molecular and clinical heterogeneities of inherited factor VII (FVII)
deficiency, consensus guidelines for management of this coagulation disorder are not
currently well established. Therefore, potential clinical, plasmatic or genetic criteria,
that could be predictive for bleeding tendency in this condition, have been evaluated.
Genotypic criteria including FVII genotypes and thrombophilic mutations are of particular
interest to better understand some of the variations observed in bleeding phenotypes
but they are still poorly informative for the management of surgery in FVII-deficient
patients. Up to now, no plasma parameters have been found to be reliable predictors
of bleeding risk. Nevertheless, tissue factor and platelet pathways remain to be explored.
Finally, clinical history appears to be the best predictor of bleeding risk after
haemostatic challenges in inherited FVII deficiencies. Furthermore, the absence of
history of bleeding or mild bleeding phenotypes including menorrhagia, bruises and
epistaxis (not inducing iron deficiency anaemia or requiring blood substitutive treatment)
could enable minor surgery to be performed in FVII-deficient patients without blood
replacement therapy.
Keywords
Factor VII deficiency - haemorrhagic disease - haemostatic threshold - FVII gene mutation