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1 patient data entry collated from reference Weiss and Saneto, 2010.

Entry
#
Mutations
allele 1allele 2
Clinical representationSymptomsAge groupPatient ageAge of onsetAge of death
313G848S1
T251I
P587L2
progressively droopy eyelids, double vision, gait instability, proximal arm weakness, ragged red and ragged blue (succinate dehydrogenase–positive) fibers in about 3% and 6% of all muscle fibers, bilateral ptosis, diplopia, dysarthria, myopathy involving the facial muscles, sensory ataxic polyneuropathy
-polyneuropathy
-ragged red fibers
-myopathy
-ptosis
-diplopia
-dysarthria
adult
80n/an/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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