Accordingly, the numbers of BCAS1(+) cells in these regions were limited in both MSA-C and MSA-P cases (case 1, 2, 3, and 6, Additional file 1: Table S1), and it was difficult to perform statistical analysis regarding the difference in the numbers and morphological alteration of BCAS1(+) cells between the MSA subtypes. This evidence concerns the gene BCAS1 and multiple system atrophy.