Reversible valproate hepatotoxicity due to mutations in mitochondrial DNA polymerase γ (POLG1)
- R McFarland,
- G Hudson2,
- R W Taylor2,
- S H Green3,
- S Hodges1,
- P J McKiernan3,
- P F Chinnery1,2,
- V Ramesh1
- 1Newcastle upon Tyne NHS Hospitals Trust, Newcastle upon Tyne, UK
- 2Newcastle University, Newcastle upon Tyne, UK
- 3Birmingham Children’s Hospital, Birmingham, UK
- Robert McFarland, robert.mcfarland{at}ncl.ac.uk
- Published 10 May 2009
Summary
We report the case of a 2-year-old boy with seizures who developed hepatic failure shortly after commencing sodium valproate. Unexpectedly, liver function returned to normal on stopping the drug. Sequencing of the mitochondrial polymerase γ gene (POLG1) revealed four heterozygous substitutions, two of which have been identified in cases of Alpers–Huttenlocher disease.
Footnotes
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Competing interests: none.








