S Okawa, M Sugawara, S Watanabe, et al. A novel sacsin mutation in a Japanese woman showing clinical uniformity of autosomal recessive spastic ataxia of Charlevoix-Saguenay (J Neurol Neurosurg Psychiatry 2006;77:280–2). The last author of this letter is I Toyoshima and not T Imota, as published. We apologise for this error.