Is there a natural process/cell signalling pathway within the body that functions as a repair mechanism for aberrant epigenetic switches? (like we have TP53 which functions within a DNA repair mechanism) i.e. *inside* the body. I'm not trying to find out if we have a diagnostic/detection technique *outside* the body.
For example: an aberrant and oncogenic epigenetic switch has occurred. This leads to "Gene A" activation and transcription of "Protein A" which functions to repair the epigenetic switch to restore its normal, non-oncogenic state.