A simple but profound mutation in mouse DNA polymerase ε drives tumorigenesis.

Abstract excerpt

Over 40 years ago, Loeb and colleagues proposed that errors in DNA replication produce a mutator phenotype that is involved in generating the multiple mutations required for tumor development. In this issue of the JCI, Li, Castrillon, and colleagues describe a mouse model containing a single base change in the gene encoding replicative DNA polymerase ε (POLE) that mimics the "ultramutator" phenotype recently...

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