Alternative titles and symbols : Spinocerebellar ataxia, autosomal dominant, with sensory axonal neuropathy;
Description : For a discussion of autosomal dominant spinocerebellar ataxia, see SCA1 (164400).
See also 16q22-linked spinocerebellar ataxia (SCA31; 117210), which is caused by an
insertion within an intron of the BEAN gene (612051). Although both types of SCA map
to the same region, they have different phenotypes. SCA4 with sensory axonal neuropathy
has not been associated with any specific gene mutations, but Edener et al. (2011)
excluded the insertion in the BEAN gene as causative for SCA4, indicating that SCA31
and SCA4 are not allelic disorders.;