| Phenotype details |
see paper; ..., 8y-insidious motor clumsiness; 10y-gait instability, recurrent falls; cognitive decline, learning difficulties, language difficulties, IQ65; 11y-mild generalized ataxia, bradykinesia, osteotendinous hyporeflexia, mild muscle atrophy; spontaneous and evoked arrhythmic muscle jerks upper limbs, EEG bilateral spike–wave; MRI brain progressive frontal lobe, cerebellar atrophy |