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Leshinsky-Silver, E. et al.

E. Leshinsky-Silver, Anne-Sophie Lebre, Limor Minai, Ann Saada, Julie Steffann, Sarit Cohen, Agnes Rötig, Arnold Munnich, Dorit Lev, Tally Lerman-Sagie,

NDUFS4 mutations cause Leigh syndrome with predominant brainstem involvement.

Complex I deficiency is a frequent cause of Leigh syndrome. We describe a non-consanguineous Ashkenazi-Sephardic Jewish patient with Leigh syndrome due to complex I deficiency. The clinical and neuroradiological presentation showed predominant brainstem involvement. Blue native polyacrylamide gel electrophoresis analysis revealed an impaired assembly of complex I. The patient was found to be compound heterozygous of two mutations in the NDUFS4 gene: p.Asp119His (a novel mutation) and p.Lys154fs (recently described in an Ashkenazi Jewish family). These findings support the suggestion that the p.Lys154fs mutation in NDUFS4 should be evaluated in Ashkenazi Jewish patients presenting with early onset Leigh syndrome even before enzymatic studies. Our results further demonstrated that NDUFS4 presents a hotspot of mutations in the genetic apparatus of oxidative phosphorylation and the correct assembly of the subunit it encodes is essential for completion of the assembly of complex I.[1]

References

NDUFS4 mutations cause Leigh syndrome with predominant brainstem involvement. Leshinsky-Silver, E., Lebre, A.S., Minai, L., Saada, A., Steffann, J., Cohen, S., Rötig, A., Munnich, A., Lev, D., Lerman-Sagie, T. Mol. Genet. Metab. (2009) [Pubmed]

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