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A form of progressive external ophthalmoplegia, a mitochondrial myopathy characterized by progressive paralysis of the levator palpebrae, orbicularis oculi, and extraocular muscles. PEOB5 features include slowly progressive ptosis, intermittent double vision, cardiac arrhythmias, exercise intolerance, proximal limb and neck muscle weakness, and cerebellar ataxia. Patients skeletal muscle biopsy show numerous COX-deficient ragged-red fibers, increased mtDNA deletions, and extensive variable mtDNA rearrangements.




Progressive external ophthalmoplegia, autosomal recessive 5


Progressive external ophthalmoplegia


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