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Genetic and Rare Diseases Information Center (GARD)

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Factor V deficiency

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What causes factor V deficiency?

Factor V deficiency is caused by mutations in the F5 gene that prevent the production of a functional factor V protein or decrease the amount of the protein in the bloodstream. Mutations are present in both copies of the F5 gene in each cell, which prevents blood from clotting normally.[1]
Last updated: 3/3/2010

  1. F5. Genetics Home Reference Web site. July 2007; Accessed 3/24/2008.