| 4 patient data entries in database for mutations W748S and G11D. | Entry #
 | | Mutations |  | allele 1 | allele 2 | 
 | Clinical representation | Symptoms | Age group | Age of onset | Age of patient | Age of death | Reference |  |  |  | 187 | W748S5 
 | R852C1 G11D
 
 | reported as Alpers, onset at 1 years, presenting encephalopathy with epilepsy, hepatopathy, and movement disorder (ataxia). 32% mtDNA copy number in liver. | | - | movement disorder (ataxia) |  |
 |  | 1 | n/a | n/a | Ashley et al, 2008; [view data] |  | 286 | W748S5 
 | R852C1 G11D
 
 | Developmental retardation, Hypotonia, ataxia, seizures myoclonus, abnormal eye movement, gastrointestinal problems, hepatic involvement | | - | movement disorder (ataxia) |  |
 |  | 0.3 | n/a | 1.1 | Naess et al, 2009; [view data] |  | 349 | R852C1 G11D
 
 | W748S5 E1143G
 
 | PEO, alpers disease, ataxia, seizure, hypotonia, developemental delay, | | - | movement disorder (ataxia) |  |
 |  | 0.001 | n/a | n/a | Vasta et al, 2012; [view data] |  | 520 | W748S5 E1143G
 
 | G11D R852C1
 
 | Alpers, Seizures, Epilepsia partialis continua, liver failure, stroke-like episode. |  |  | 1.33 | n/a | n/a | Stewart et al, 2009; [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. Number of displayed patient cases: 4Avg age of onset in displayed cases: 0.7
 Std dev in onset in displayed cases: 0.5
 
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