See:
Genetic Testing - amyloidosis transthyretin (ATTR Transthyretin amyloidosis type); Familial amyloid polyneuropathy (FAP Familial Amyloid Polyneuropathy); Cardiomyopathy familial amyloidotic (FAC: Familial Amyloid Cardiomiopathy); Family systemic amyloidosis (SFA: Systemic Amyloidosis Familial); Amiliodosis type 1 - Gen TTR.