MAPT and red-green color blindness: Of the PSP-RS cases, 26 (8%) had a pathological diagnosis aftercoming to post-mortem: 24 (92%) showed tau pathology consistent with PSP, whereas 2 caseshad non-PSP tau pathology [one corticobasal degeneration (CBD) and one globular glialtauopathy (GGT)] and were, therefore, excluded from the analysis.