Clinical Research Directory

Inclusion Criteria: * Patients with a diagnosis of PTC and a family history of PTC in 3 or more living relatives * Affected and unaffected family members of the proband\* * For familial cases (families with 4 or more cases of PTC), participation will be offered to all living family members with PTC or benign thyroid disease as well as selected unaffected first and second degree relatives. Participation may also be offered to spouses when needed for analyzing parent/offspring samples. Exclusion Criteria: * Known germline predisposition (ex: pathogenic PTEN variant) * Non-English speaking