Asymmetric Ataxia, Depression, Memory Loss, Epilepsy, and Axonal Neuropathy Associated with A Heterozygous DNA Polymerase Gamma Variant of Uncertain Significance, c1370G>a (R457Q).

Abstract excerpt

INTRODUCTION: Mutations in the gene encoding DNA polymerase gamma (POLG) impair its ability to proofread mitochondrial DNA (mtDNA) during replication [1]. This results in a high frequency of randomly distributed mtDNA mutations and thus a wide range of phenotypes, including seizures, neuropathy, and cerebellar ataxia [1, 2]. We document a phenotype associated with the rare POLG variant c.1370G>A (p.R457Q)....

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