Toggle Main Menu Toggle Search

Open Access padlockePrints

Variation in OPA1 does not explain the incomplete penetrance of Leber hereditary optic neuropathy

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


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Purpose: Leber hereditary optic neuropathy (LHON) is a common cause of inherited blindness, primarily due to one of three mitochondrial DNA (mtDNA) mutations. These mtDNA pathogenic mutations have variable clinical penetrance. Recent linkage evidence raised the possibility that the nuclear gene optic atrophy 1 (OPA1) determines whether mtDNA mutation carriers develop blindness. To validate these findings we studied OPA1 in three independent LHON cohorts: sequencing the gene in discordant male sib pairs, carrying out a family-based association study of common functional genetic variants, and carrying out a population-based association study of the same genetic variants. Methods: We tested 3 hypothesis in three separate study groups. Study group 1: Direct sequencing of OPA1 coding regions was performed using sequencing methodologies (Applied Biosystems, Foster City, CA). Chromatograms were compared with the GenBank reference sequence NM_015560.1. Splice-site prediction was performed using GeneSplicer. Study group 2: Genotyping for rs166850 and rs10451941 was performed by restriction fragment length polymorphism (RFLP) analysis with specific primers for both genotypes, using The restriction enzymes RsaI and FspBI to discriminate genotypes. Study group 3: Genotyping for rs166850 and rs10451941 was performed by primer extension of allele-specific extensions products by matrix-associated laser desorption/ionisation time-of-flight (MALDI-TOF, Seqeunom, San Diego, CA) mass spectrometry. Allele and genotype frequencies were compared using Pearson's chi-square test. Multiple logistic regression was performed to look for interactions between the variables. All analyses were performed using SPSS software version 17.0 (SPSS Inc.). Results: In all three groups we were unable to find an association between OPA1 genetic variation and visual failure in LHON mtDNA mutation carriers. Conclusions: Our findings suggest that genetic variation in OPA1 is unlikely to make a major contribution to the risk of blindness in LHON mutation carriers.

Publication metadata

Author(s): Hudson G, Yu-Wai-Man P, Griffiths PG, Caporali L, Salomao SS, Berezovsky A, Carelli V, Zeviani M, Chinnery PF

Publication type: Article

Publication status: Published

Journal: Molecular Vision

Year: 2010

Volume: 16

Pages: 2760-2764

Print publication date: 15/12/2010

ISSN (print):

ISSN (electronic): 1090-0535

Publisher: Molecular Vision



Funder referenceFunder name
UK Parkinson Disease Society
Medical Research Council (UK)
UK NIHR Biomedical Research Centre for Aging and Age