ATXN3 and spinocerebellar ataxia type 1: Whereas the pattern of cognitive decline seen in the SCA1 and SCA3 groups was loosely comparable, their clinical scores were quite different: the SCA1 patients showed a lower SARA score but a higher INAS score compared to the SCA3 group, and it was the latter group that exhibited the more pronounced change on the INAS over time.