title: Clinical and neuropathological findings in patients with TACO1 mutations.
abstract: We have recently identified mutations in the translation activator of cytochrome c oxidase 1 (TACO1) gene, leading to cytochrome c oxidase (COX) deficiency. Here, we report the clinical and neuroimaging findings of five members of a big consanguinous family homozygous for c.472insC in TACO1. All 5 patients had an uneventful early childhood and a subtle onset, slowly progressive cognitive dysfunction, dystonia or visual impairment between ages 4 and 16years. Affected girls had a milder phenotype and preserved ambulation into the late twenties. Brain MRI revealed bilateral, symmetric lesions of the basal ganglia in all affected family members, but less prominent in girls. TACO1 analysis showed no mutations in 17 patients with juvenile-onset Leigh syndrome and isolated COX or combined respiratory chain deficiency, indicating that TACO1 mutations are a rare cause of Leigh syndrome.
authors: Deutsche Klinik für Diagnostik, Wiesbaden, Germany.
authors: Jürgen
authors: J
authors: Seeger
authors: Bertold
authors: B
authors: Schrank
authors: Angela
authors: A
authors: Pyle
authors: Rolf
authors: R
authors: Stucka
authors: Ulrich
authors: U
authors: Lörcher
authors: Solvig
authors: S
authors: Müller-Ziermann
authors: Angela
authors: A
authors: Abicht
authors: Birgit
authors: B
authors: Czermin
authors: Elke
authors: E
authors: Holinski-Feder
authors: Hanns
authors: H
authors: Lochmüller
authors: Rita
authors: R
authors: Horvath
mesh_terms: D000293:Adolescent; D000328:Adult; D001479:Basal Ganglia / Q000473:pathology*; D002648:Child; D003072:Cognition Disorders / Q000201:enzymology / Q000235:genetics* / Q000473:pathology; D030401:Cytochrome-c Oxidase Deficiency / Q000201:enzymology / Q000235:genetics* / Q000473:pathology; D003576:Electron Transport Complex IV / Q000235:genetics / Q000378:metabolism; D005260:Female; D006801:Humans; D007888:Leigh Disease / Q000235:genetics / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008840:Microfilament Proteins / Q000235:genetics* / Q000378:metabolism; D018482:Muscle, Skeletal / Q000201:enzymology / Q000473:pathology*; D010641:Phenotype; D012737:Sex Factors
chemical_list: D008840:Microfilament Proteins; C072061:coronin proteins; D003576:Electron Transport Complex IV