FAP and AFAP testing: Genetic colon cancer – pro
A small proportion of colon and rectal cancers arise in individuals who have genetic mutations. Familial Adenomatous Polyposis(FAP) and AFAP are autosomal dominant disorders with 50% risk of inheritance and about 75–80% of individuals with these conditions have an affected parent. Autosomal dominant inheritance means that an offspring of an affected individual has a 50% risk of inheriting the altered APC gene. Adenomas develop in approximately
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