Family history and genetics

Thyroid cancer risk is over 6 times higher in people with a first-degree relative (Parent) with the same disease. Genetic predisposition syndromes account for between 5 and 25% of specific types of Thyroid cancers. Thyroid cancer also develops in up to 12% of people with Familal Adenomatous Polyposis (FAP) and 10% of people with Cowden syndrome.