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. 2001 Jul;28(3):211-2.
doi: 10.1038/90034.

Mutation of POLG Is Associated With Progressive External Ophthalmoplegia Characterized by mtDNA Deletions

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Mutation of POLG Is Associated With Progressive External Ophthalmoplegia Characterized by mtDNA Deletions

G Van Goethem et al. Nat Genet. .

Abstract

Progressive external ophthalmoplegias (PEO) characterized by accumulation of large-scale mitochondrial DNA (mtDNA) deletions are rare human diseases. We mapped a new locus for dominant PEO at 15q22-q26 in a Belgian pedigree and identified a heterozygous mutation (Y955C) in the polymerase motif B of the mtDNA polymerase gamma (POLG). We identified three additional POLG missense mutations compatible with recessive PEO In two nuclear families. POLG is the only DNA polymerase responsible for mtDNA replication.

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