Furthermore, in the pathologically confirmed MSA cases carrying an FGF14 GAA≥250 repeat expansion, we found a negative correlation between the FGF14 GAA•TTC repeat expansion size and disease survival (n = 11, Pearson's r = −0.67, P = 0.02) (Fig. 3D and Supplementary Table 4). The gene discussed is FGF14; the disease is multiple system atrophy.