Thank you for visiting. This Web site can help you recognize the signs and symptoms of Transthyretin Familial Amyloid Polyneuropathy (TTR-FAP), sometimes referred to as transthyretin amyloidosis. TTR-FAP is a rare, irreversible, progressive neurodegenerative disease. The symptoms are a combination of sensorimotor and autonomic symptoms. Please use this Web site as a resource for better understanding TTR-FAP and the importance of early diagnosis.