It is of note that while in MSA cerebellar white matter we observed a very strong correlation between the levels of HIP1 protein and MOBP 20.8–23.3 kDa isoforms (r = 0.90, p = 0.01), in the occipital lobe white matter this co‐expression pattern was not observed (r = −0.49, p > 0.05; Figure S5). This evidence concerns the gene HIP1 and multiple system atrophy.