ATXN7 and Kennedy disease: Thus, models for other polyQ disorders, such as dentatorubropallidoluysian atrophy (DRPLA), spinobulbar muscular atrophy (SBMA) or Kennedy disease, and spinocerebellar ataxia types 1 and 7 (SCA1, SCA7), share altered transcriptional genes with HD signatures [22, 26, 30, 181, 182].