| 
 2 patient data entries collated from reference Martikainen et al, 2016. Entry # | | Mutations |  | allele 1 | allele 2 |  
  | Clinical representation | Symptoms | Age group | Patient age | Age of onset | Age of death |   |  | 666 | Splice site  mutation: c.1250+5G>C
  | A467T2
  | Parkinsons, PEO, short-term memory problems, general cerebral and cerebellar atrophy. |  |  | 81 | 50 | n/a |  | 667 |  | Y955C1
  | Parkinsonism, restless legs syndrome. Good response to levodopa and ropinirole. PEO, cerebellar ataxia, neuropathy, myopathy, sensorineural hearing loss. | | - | movement disorder (ataxia) |  |
 
  |  | 63 | 40 | n/a |  
 1-5 pathogenic cluster assignment of mutations. Mutations displayed without a superscript number are outside of the assigned pathogenic clusters. See cluster definitions for details. 
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