While the change in Hb between baseline and 8 h was similar across the SCA groups, in comparison to AA children, recovery was 3.6 and 3.9 g/dl lower by Day 180 among children with unknown‐ and known‐SCA, respectively (p < .001 for both comparisons) (Table 2). The gene discussed is GSTM1; the disease is autosomal dominant cerebellar ataxia.