| 1 patient data entry in database for mutations Q1236H and Y955C. | Entry #
 | | Mutations |  | allele 1 | allele 2 | 
 | Clinical representation | Symptoms | Age group | Age of onset | Age of patient | Age of death | Reference |  |  |  | 379 | Q1236H 
 | Y955C1 
 | Presented with ptosis and PEO, in early 20’s, premature ovarian failure at 28 years. proximal muscle weakness, exertional dyspnoea and sensory ataxia, Peripheral neuropathy | | - | movement disorder (ataxia) |  |
 |  | 22 | 33 | n/a | Pagnamenta et al, 2006; [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. |