Leigh disease caused by the mitochondrial DNA G14459A mutation in unrelated families
DM Kirby, SG Kahler, ML Freckmann, D Reddihough, DR Thorburn
ANNALS OF NEUROLOGY | LIPPINCOTT WILLIAMS & WILKINS | Published : 2000
Leigh disease can be caused by defects of both nuclear and mitochondrially encoded genes. One mitochondrial DNA mutation, G14459A, has been associated with both respiratory chain complex I deficiency and Leber's hereditary optic neuropathy, with or without dystonia. Here, we report the occurrence of this mutation in 3 complex I-deficient patients from 2 separate pedigrees who presented with Leigh disease, with no evidence or family history of Leber's hereditary optic neuropathy or dystonia.