What are chances of my children inheriting the condition familial adenomatous polyposis?

If your family have: If you and some of your family members have it, should undergo genetic counselling and genetic testing.

Two patterns: Familial adenomatous polyposis can have different inheritance patterns: (1) autosomal dominant (involving apc gene) - one parent has disease, child has 50% chance of getting it; (2) autosomal recessive (mutyh gene) - usually neither parent has disease (both are carriers), child has 25% chance of inheriting the disease. See genetic counselor for help.