MAPT and supranuclear palsy, progressive, 1: We performed a genetic analysis that included whole-exome sequencing, and the results demonstrated that there was no pathological variation in genes currently known to be associated with PSP or ALS, including MAPT and GRN. No hexanucleotide repeat expansion was detected in C9orf72. The number of CAG repeats in the ATXN2 gene was 25/25 (normal).