PI4KA and aceruloplasminemia: We also observed that the level of LMNB1, which is involved in cerebellar ataxia and adult autosomal dominant leukodystrophy (r2 = −0.634, p < 0.0001), and the level of Pi4KA (r2 = −0.634, p = 0.066) in the hippocampus were correlated with the DI.