| 5 patient data entries in database for mutations L304R and A467T. | Entry #
 | | Mutations |  | allele 1 | allele 2 | 
 | Clinical representation | Symptoms | Age group | Age of onset | Age of patient | Age of death | Reference |  |  |  | 59 | A467T2 
 | L304R3 
 | myopathy, PEO, dysarthria. |  |  | 16 | n/a | 37 | Van Goethem et al, 2003a; [view data] |  | 60 | A467T2 
 | L304R3 
 | sensory ataxic neuropathy, PEO, dysarthria. |  |  | 25 | n/a | n/a | Van Goethem et al, 2003a; [view data] |  | 569 | L304R3 
 | A467T2 
 | psychiatric symptoms, ptosis, opthalmoplegia, dysphonia, dysphagia, muscle weakness, loss of weight, areflexia. |  |  | 16 | 28 | n/a | Van Goethem et al, 2001; [view data] |  | 570 | L304R3 
 | A467T2 
 | ocular symptoms, psychiatric symptoms, ptosis, opthalmoplegia, muscle weakness, distal sensory neuropathy, areflexia, pes cavus. |  |  | 25 | 38 | n/a | Van Goethem et al, 2001; [view data] |  | 571 | L304R3 
 | A467T2 
 | ocular symptoms, ptosis, opthalmoplegia, dysphagia, muscle weakness, areflexia, retinopathy. |  |  | 24 | 34 | n/a | Van Goethem et al, 2001; [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: 5Avg age of onset in displayed cases: 21.2
 Std dev in onset in displayed cases: 4.3
 
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