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Published on: February 4, 2021
Antituberculosis medication as a possible epigenetic factor of Leber's hereditary optic neuropathy
Je Hyun Seo1, Jeong-Min Hwang, Sung Sup Park
1Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.
Purpose:
To investigate if antituberculosis medication including ethambutol could be a possible epigenetic factor in visual loss in Leber's hereditary optic neuropathy (LHON).
Methods:
The authors reviewed the medical records of 46 patients registered at Bundang Seoul National University Hospital from 2002 to 2006, who developed the typical clinical neuro-ophthalmologic features of LHON and possessed a mtDNA mutation at nucleotide 11778, 14484, 3460 or 4171.
Results:
Three of the 46 patients developed visual loss while taking antituberculosis medication. These three patients had the mtDNA 11778 mutation with a mean age of 32.7 years at the onset of visual loss, whereas the mean age of other 43 patients was 21.2 years. One of these three patients was female.
Conclusion:
Antituberculosis medication may be an epigenetic factor of LHON in patients with a primary LHON mutation. This risk should be recognized by physicians and LHON carriers.
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