Mid- and long-term anxiety levels associated with presymptomatic testing of Huntington’s disease, Machado-Joseph disease, and familial amyloid polyneuropathy

To study anxiety as a variable of the mid- and long-term psychological impact of presymptomatic testing for three autosomal dominant late-onset disorders – Huntington’s disease (HD), Machado-Joseph disease (MJD) and familial amyloid polyneuropathy (FAP) TTR V30M – in a Portuguese sample.