| 1 patient data entry in database for mutations T914P and R1096C. | Entry #
 | | Mutations |  | allele 1 | allele 2 | 
 | Clinical representation | Symptoms | Age group | Age of onset | Age of patient | Age of death | Reference |  |  |  | 199 | R1096C3 
 | T914P1 
 | reported as Alpers, onset at <1 year, presenting encephalopathy with epilepsy, hepatopathy, and movement disorder (ataxia). 7% mtDNA copy number in liver, 23% mtDNA copy number in muscle | | - | movement disorder (ataxia) |  |
 |  | 1 | n/a | n/a | Ashley et al, 2008; [view data] | 
 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. |