Leber's Hereditary Optic Neuropathy Associated with the m.10197G>A Mutation

Tzu-Lun Huang, Jia-Kang Wan

Abstract

Leber hereditary optic neuropathy (LHON) is an optic neuropathy caused by homoplasmic or heteroplasmic mtDNA mutations, which predominantly cause damage to the retinal ganglion cells (RGCs). The mtND3*10197A (m.10197G>A) mutation has been identified as the novel causative gene in Chinese patients with LHON and dystonia [1]. The m.10197G>A mutation also has been detected in patients with bilateral basal ganglia lesions and Leigh syndrome [2-4]. This mutation substitutes a threonine for an alanine at codon 47 of MTND3.