| Phenotype details |
see paper; ..., mild mental retardation (IQ 70), inborn strabismus, red–green color vision defect; <12y-motor development normal; 12y-slowly progressing gait disturbances, memory loss, depressive mood; 13y-truncalataxia, gait ataxia, small-amplitude tremor both hands, gaze-evoked nystagmus, pes cavus; mild sensory axonal neuropathy; MRI brain normal; father gait disturbances, memory loss, pes cavus, died of anaplastic astrocytoma |