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Role of TET enzymes in DNA methylation, development, and cancer

Ten eleven translocation (TET) genes, and especially TET2, are frequently mutated in various cancers, but how the TET proteins contribute to the onset and maintenance of these malignancies is largely unknown. In this review, Rasmussen and Helin highlight recent advances in understanding the physiological function of the TET proteins and their role in regulating DNA methylation and transcription.