Prevalence and Incidence of Factor XII Deficiency

Factor XII Deficiency: Rare Disease

Factor XII Deficiency is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Factor XII Deficiency, or a subtype of Factor XII Deficiency, affects less than 200,000 people in the US population.

Ophanet, who are a consortium of European partners, currently defines a condition rare when if affects 1 person per 2,000. They list Factor XII Deficiency as a "rare disease". More information about Factor XII Deficiency is available from Orphanet

About prevalence and incidence statistics:

The term 'prevalence' of Factor XII Deficiency usually refers to the estimated population of people who are managing Factor XII Deficiency at any given time. The term 'incidence' of Factor XII Deficiency refers to the annual diagnosis rate, or the number of new cases of Factor XII Deficiency diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

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