Deletions in chromosome 6p22.3-p24.3, including ATXN1, are associated with developmental delay and autism spectrum disorders.
Celestino-Soper PB, Skinner C, Schroer R, Eng P, Shenai J, Nowaczyk MM, Terespolsky D, Cushing D, Patel GS, Immken L, et al. Mol Cytogenet. 2012 Apr 5; 5:17. Epub 2012 Apr 5.