eLife assessment
This manuscript provides valuable findings that the underlying mechanism for the reduction in BDNF-TrkB signaling in Spinocerebellar ataxia 6 (SCA6) is due to defective endolysosomal trafficking. The findings will be significant in understanding underlying pathology, but the data supporting the hypothesis is not comprehensive and the strength of the data is incomplete in some instances, in that there may be multiple mechanisms that explain the findings.