AP is inherited in an autosomal dominant miner. Approximately 75-80% of individual Uh FAP have an affcctcd parent.
ffspring of an affcctcd individuai have a 50 sk ofinhęritipg the altered A PC gene.
renatal testing ispossible if a disease-causin utation is identified in an aflected famiiy cmber; however, prenatai tcsting for typka luit-onset disorders is uncommon and requi rei ul genetic counsefing.