There was a significant difference in haematological parameters between SCA participants and the controls: ERFE (p < 0.001), ferroportin (p = 0.016), hepcidin (p < 0.001), ferritin (p < 0.001), serum iron (p < 0.001), transferrin (p = 0.001), sTFR (p = 0.019), and TSAT% (p = 0.001) were significantly higher in the participants with SCA than those in the control group. This evidence concerns the gene ERFE and autosomal dominant cerebellar ataxia.