In addition, the PSP‐tau score was lower in cases showing a strong accumulation pattern of left–right differences (Fig. S4, cases F, H), suggesting the possibility of calculating the corticobasal degeneration (CBD)‐tau score by adding information regarding left–right differences, such as asymmetry index, to machine learning if sufficient data on CBD cases are obtained. This evidence concerns the gene MAPT and red-green color blindness.