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Variation in MAPT is not a contributing factor to the incomplete penetrance in LHON

Lookup NU author(s): Professor Gavin Hudson, Dr Patrick Yu Wai Man, Philip Griffiths, Professor Rita HorvathORCiD, Professor Patrick Chinnery

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Abstract

Leber's hereditary optic neuropathy (LHON) is a common cause of inherited blindness, primarily due to one of three mitochondrial DNA (mtDNA) mutations. LHON, which has an unexplained variable penetrance and pathology, is characterised by disruption of the mitochondrial respiratory chain ultimately resulting in degeneration of the retinal ganglion cells. Phosphorylation of the tau protein is known to cause neurodegeneration and variation in MAPT has been associated with a range of neurodegenerative disorders. Given the relationship between MAPT variation and altered mitochondrial respiratory chain function, we hypothesised that MAPT variation could contribute to the risk of blindness in LHON mtDNA mutation carriers. We studied MAPT variation in a large, well characterised LHON cohort, but were unable to find an association between MAPT genetic variation and visual failure in LHON mtDNA mutation carriers. Our findings suggest that genetic variation in MAPT is unlikely to make a major contribution to the risk of blindness among LHON mutation carriers. (C) 2011 Elsevier B.V. and Mitochondria Research Society. All rights reserved.

Publication metadata

Author(s): Hudson G, Yu-Wai-Man P, Griffiths PG, Horvath R, Carelli V, Zeviani M, Chinnery PF

Publication type: Article

Publication status: Published

Journal: Mitochondrion

Year: 2011

Volume: 11

Issue: 4

Pages: 620-622

Print publication date: 10/03/2011

ISSN (print): 1567-7249

ISSN (electronic): 1872-8278

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.mito.2011.03.004

DOI: 10.1016/j.mito.2011.03.004

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