G6PD and autosomal dominant cerebellar ataxia: Mean CBFv (131 cm/s) and the prevalence of highly elevated (>200 cm/s) (7%) and conditionally elevated (170–199 cm/s) (4%) CBFv were higher in our Tanzanian patients compared to rural Kenyan children with SCA with a mean CBFv of 120 cm/s and only 3% with conditional and none with high CBFv (Makani et al, 2009), but still considerably lower than in other studies in which alpha‐thalassaemia and/or G6PD were also assessed.