We, therefore, supplemented the EOAD- control group with ataxia genotypes that were not reported with comorbid dystonia in literature (including ABHD12; IFRD1; KIAA0226; PHYH; TDP1; VWA3B; GTF2H5; FLVCR1; ACO2; HSD17B4; DNAJC3 gene mutations; PubMed and OMIM). This evidence concerns the gene HSD17B4 and Ataxia.