Overview
Progressive external ophthalmoplegia (adPEO) is an autosomal dominant disorder characterized by progressive weakness of external eye muscles, often associated with mitochondrial dysfunction and multiple deletions in mitochondrial DNA 1.Diagnosis
Clinical presentation includes adult-onset external ophthalmoplegia 1.
Demonstration of mitochondrial dysfunction through genetic testing showing multiple mitochondrial DNA deletions 1.
Long-range and real-time PCR assays are recommended for detecting deletions; Southern blotting may not be sensitive enough 1.
Genetic testing for mutations in the Twinkle gene (PEO1) is crucial, particularly for identifying Leu360Gly substitution 1.Management
No specific first-line pharmacological treatments are mentioned; management is largely supportive 1.
Supportive care includes addressing systemic complications such as CNS, respiratory, hepatic, and endocrine dysfunction 1.
Regular monitoring and multidisciplinary approach involving neurology, pulmonology, endocrinology, and hepatology are essential 1.Special Populations
Pregnancy: Not addressed in provided abstracts 1.
Pediatrics: Not addressed in provided abstracts 1.
Elderly: Management focuses on managing systemic complications common in elderly patients 1.
Comorbidities: Close monitoring and management of concurrent CNS, respiratory, hepatic, and endocrine issues are critical 1.Key Recommendations
Perform genetic testing for Twinkle gene mutations, particularly focusing on Leu360Gly substitution, in patients with suspected adPEO 1 (Evidence: Moderate).
Utilize long-range and real-time PCR assays for detecting mitochondrial DNA deletions in diagnostic workup 1 (Evidence: Moderate).
Implement a multidisciplinary approach to manage systemic complications associated with adPEO 1 (Evidence: Expert opinion).References
1 Bohlega S, Van Goethem G, Al Semari A, Löfgren A, Al Hamed M, Van Broeckhoven C et al.. Novel Twinkle gene mutation in autosomal dominant progressive external ophthalmoplegia and multisystem failure. Neuromuscular disorders : NMD 2009. link