Background: Leigh Syndrome (LS) is a severe neurodegenerative disorder characterized by bilateral symmetrical necrotic lesions in the basal ganglia and brainstem. Onset is in early infancy and prognosis is poor. Causative mutations have been disclosed in mitochondrial DNA and nuclear genes affecting respiratory chain subunits and assembly factors.Case presentation: Here we report the clinical and molecular features of a 15-month-old female LS patient. Direct sequencing of her muscle-derived mtDNA revealed the presence of two apparently homoplasmic variants: the novel m.14792C > G and the already known m.14459G > A resulting in p.His16Asp change in cytochrome b (MT-CYB) and p.Ala72Val substitution in ND6 subunit, respectively. The m.14459G > A was heteroplasmic in the mother's blood-derived DNA.Conclusions: The m.14459G > A might lead to LS, complicated LS or Leber Optic Hereditary Neuropathy. A comprehensive re-evaluation of previously described 14459G > A-mutated patients does not explain this large clinical heterogeneity. © 2011 Ronchi et al; licensee BioMed Central Ltd.

Clinical and molecular features of an infant patient affected by Leigh Disease associated to m.14459G > A mitochondrial DNA mutation :aA case report / D. Ronchi, A. Cosi, D. Tonduti, S. Orcesi, A. Bordoni, F. Fortunato, M. Rizzuti, M. Sciacco, M. Collotta, S. Cagdas, G. Capovilla, M. Moggio, A. Berardinelli, P. Veggiotti, G.P. Comi. - In: BMC NEUROLOGY. - ISSN 1471-2377. - 11(2011), pp. 85.1-85.6.

Clinical and molecular features of an infant patient affected by Leigh Disease associated to m.14459G > A mitochondrial DNA mutation :aA case report

D. Ronchi
Primo
;
A. Cosi
Secondo
;
D. Tonduti;A. Bordoni;F. Fortunato;P. Veggiotti;G.P. Comi
2011

Abstract

Background: Leigh Syndrome (LS) is a severe neurodegenerative disorder characterized by bilateral symmetrical necrotic lesions in the basal ganglia and brainstem. Onset is in early infancy and prognosis is poor. Causative mutations have been disclosed in mitochondrial DNA and nuclear genes affecting respiratory chain subunits and assembly factors.Case presentation: Here we report the clinical and molecular features of a 15-month-old female LS patient. Direct sequencing of her muscle-derived mtDNA revealed the presence of two apparently homoplasmic variants: the novel m.14792C > G and the already known m.14459G > A resulting in p.His16Asp change in cytochrome b (MT-CYB) and p.Ala72Val substitution in ND6 subunit, respectively. The m.14459G > A was heteroplasmic in the mother's blood-derived DNA.Conclusions: The m.14459G > A might lead to LS, complicated LS or Leber Optic Hereditary Neuropathy. A comprehensive re-evaluation of previously described 14459G > A-mutated patients does not explain this large clinical heterogeneity. © 2011 Ronchi et al; licensee BioMed Central Ltd.
Leigh Syndrome; mitochondrial DNA; LHON; MT-ND6; MT-CYB; mitochondrial Complex I
Settore MED/26 - Neurologia
2011
Article (author)
File in questo prodotto:
File Dimensione Formato  
2011 BMC Neurol Leigh 14459.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Dimensione 2.04 MB
Formato Adobe PDF
2.04 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/253966
Citazioni
  • ???jsp.display-item.citation.pmc??? 9
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 20
social impact