BDNF and autosomal dominant cerebellar ataxia: Similarly, BDNF, was elevated 3-fold in children with SCA compared to Controls (median 263.0 (IQR 129.0 – 737.0) vs 81.0 (IQR 54.0 – 99.0) ng/mL, p-value = 0.0009, Fig. 1C).