Epigenetic therapy is a medical approach that aims to modify gene expression without altering the underlying DNA sequence. It focuses on the chemical changes that affect how genes are turned on or off, which can influence various diseases, including certain types of cancer. By targeting these epigenetic modifications, researchers hope to restore normal gene function and improve treatment outcomes. This therapy often involves the use of drugs that can reverse abnormal epigenetic changes. For example, compounds like DNA methyltransferase inhibitors and histone deacetylase inhibitors are being studied for their potential to reactivate silenced genes. Overall, epigenetic therapy represents a promising frontier in personalized medicine.