title: Whole mitochondrial genome analysis in South Indian patients with Leber's hereditary optic neuropathy.
abstract: Leber's hereditary optic neuropathy (LHON) is a mitochondrial DNA (mtDNA) associated neurodegenerative disorder of retinal ganglion cells. In this study, whole mitochondrial genome sequencing of 75 LHON patients and 40 controls was performed to identify the mutation frequency and haplogroup background of South Indian population. Analysis of mtDNA revealed 559 different variants in LHON patients, including 7 pathogenic mutations, 30 private, and 22 other disease associated variants. A significantly higher (p=0.0008) overall variation load per individual was noted among LHON patients versus controls. We reported for the first time, the association of M haplogroup (p=0.028) with LHON in this cohort.
authors.affiliation: Department of Genetics, Dr. G. Venkataswamy Eye Research Institute, Aravind Medical Research Foundation, Madurai, India.
authors.forename: Bibhuti Ballav
authors.initials: BB
authors.lastname: Saikia
authors.affiliation: Department of Genetics, Dr. G. Venkataswamy Eye Research Institute, Aravind Medical Research Foundation, Madurai, India.
authors.forename: Sushil Kumar
authors.initials: SK
authors.lastname: Dubey
authors.affiliation: Neuro Ophthalmology Clinic, Aravind Eye Hospital, Madurai, India.
authors.forename: Mahesh Kumar
authors.initials: MK
authors.lastname: Shanmugam
authors.affiliation: Department of Genetics, Dr. G. Venkataswamy Eye Research Institute, Aravind Medical Research Foundation, Madurai, India. Electronic address: sundar@aravind.org.
authors.forename: Periasamy
authors.initials: P
authors.lastname: Sundaresan
mesh_terms: D000293:Adolescent; D000328:Adult; D004272:DNA, Mitochondrial / Q000235:genetics*; D005260:Female; D054629:Genome, Mitochondrial; D006239:Haplotypes; D006801:Humans; D007194:India; D008297:Male; D059645:Mutation Rate; D029242:Optic Atrophy, Hereditary, Leber / Q000235:genetics* / Q000473:pathology*; D017422:Sequence Analysis, DNA; D055815:Young Adult
chemical_list: D004272:DNA, Mitochondrial
keywords: Haplogroup; Leber's hereditary optic neuropathy; Mitochondria; Mutation; Primary mutation; South India