Other SCA diagnostic tests for these individuals were in the normal range (mean ± standard deviation)–SCA2 (22 ± 1 repeats, n = 18), SCA3 (26 ± 6 repeats, n = 18), SCA6 (12 ± 1 repeats, n = 19), and SCA7 (12 ± 1 repeats, n = 18). The gene discussed is CACNA1A; the disease is autosomal dominant cerebellar ataxia.