Progressive external ophthalmoplegia
MONDO:0005181A mitochondrial myopathy characterized by slowly progressive paralysis of the levator palpebrae, orbicularis oculi, and extraocular muscles. Ragged-red fibers and atrophy are found on muscle biopsy. Familial and sporadic forms may occur. Disease onset is usually in the first or second decade of life, and the illness slowly progresses until usually all ocular motility is lost. (From Adams et al., Principles of Neurology, 6th ed, p1422)
Also known as: chronic progressive external ophthalmoplegia [ambiguous], progressive external ophthalmoplegia, chronic progressive external ophthalmoplegia
23 clinical trials for this condition and its sub-types.
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Broader categories
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Could a High-Fat diet help kids with rare energy disorder?
Disease control CompletedThis study looked at whether a high-fat diet changes how children with mitochondrial disease burn energy. 36 children aged 5 to 21 were randomly assigned to eat either a normal or high-fat diet for a month, then switched. Researchers measured their resting energy use and body com…
Phase: NA • Sponsor: University Hospital, Lille • Aim: Disease control
Last updated Jun 27, 2026 12:23 UTC
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New drug shows promise for rare energy disorder
Disease control CompletedThis study tested a new drug called OMT-28 in 28 people with primary mitochondrial disease, a condition that affects how cells produce energy. Participants took the drug once daily for 6 months, and researchers measured safety, blood markers of inflammation, and symptoms like fat…
Phase: PHASE2 • Sponsor: Omeicos Therapeutics GmbH • Aim: Disease control
Last updated Jun 27, 2026 08:13 UTC
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Long-Term safety of mitochondrial drug confirmed in 101 patients
Disease control CompletedThis study looked at the safety of vatiquinone in 101 people with inherited mitochondrial disease who had already taken the drug in a previous study or treatment plan. The goal was to track any side effects until the drug became commercially available or the program ended. Partic…
Phase: PHASE3 • Sponsor: PTC Therapeutics • Aim: Disease control
Last updated Jun 27, 2026 08:05 UTC
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New drug aims to help mitochondrial disease patients walk farther
Disease control CompletedThis Phase 3 trial tested a daily injection called elamipretide in 102 adults with primary mitochondrial myopathy, a genetic condition that causes muscle weakness and fatigue. Participants received either the drug or a placebo for 48 weeks. The main goal was to see if the drug co…
Phase: PHASE3 • Sponsor: Stealth BioTherapeutics Inc. • Aim: Disease control
Last updated Jun 27, 2026 07:55 UTC