We evaluated 38 consecutive patients with corticobasal syndrome to determine if inheritance of the H1/H1 genotype influences age at onset and disease severity and if Apolipoprotein E e4 increases the risk of cognitive disturbances. Inheritance of the H1/H1 genotype was associated with severity of motor function, but did not affect age at onset or cognition. There was a trend toward shorter survival in the H1/H1 group, but this study was underpowered to test influence on survival, even though it served to estimate the sample size for future studies. ApoE inheritance did not influence cognition.
2009 Movement Disorder Society