Hepatocerebral form of mitochondrial DNA depletion syndrome: Novel MPV17 mutations

Antonella Spinazzola, René Santer, Orhan H. Akman, Kostas Tsiakas, Hansjoerg Schaefer, Xiaoqi Ding, Charalampos L. Karadimas, Sara Shanske, Jaya Ganesh, Salvatore Di Mauro, Massimo Zeviani

Research output: Contribution to journalArticle

Abstract

Background: Autosomal recessive mutations in MPV17 (OMIM *137960) have been identified in the hepatocerebral form of mitochondrial DNA depletion syndrome (MDS). Objective: To describe the clinical, morphologic, and genetic findings in 3 children with MPV17-related MDS from 2 unrelated families. Design: Case report. Setting: Academic research. Main Outcome Measures: We identified 3 novel pathogenic mutations in 3 children. Results: Two children were homozygous for nonsense mutation p.W120X. A third child was compound heterozygous for missense mutation p.G24W and for a macrodeletion spanning MPV17 exon 8. All patients demonstrated lactic acidosis, hypoglycemia, hepatomegaly, and progressive liver failure. Neurologic symptoms manifested at a later stage of the disease. Death occurred within the first year of life in all 3 patients. Conclusions: These data confirm that MPV17 mutations are associated with a 2-stage syndrome. The first symptoms are metabolic and rapidly progress to hepatic failure. This stage is followed by neurologic involvement affecting the central and peripheral systems.

Original languageEnglish
Pages (from-to)1108-1113
Number of pages6
JournalArchives of Neurology
Volume65
Issue number8
DOIs
Publication statusPublished - Aug 2008

ASJC Scopus subject areas

  • Neuroscience(all)

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    Spinazzola, A., Santer, R., Akman, O. H., Tsiakas, K., Schaefer, H., Ding, X., Karadimas, C. L., Shanske, S., Ganesh, J., Di Mauro, S., & Zeviani, M. (2008). Hepatocerebral form of mitochondrial DNA depletion syndrome: Novel MPV17 mutations. Archives of Neurology, 65(8), 1108-1113. https://doi.org/10.1001/archneur.65.8.1108