NCOR1, also known as Nuclear Receptor Corepressor 1, is a critical regulator of gene expression and transcriptional repression. Positioned predominantly within the nucleus of cells, NCOR1 plays a pivotal role in modulating the activity of nuclear receptors and other transcription factors. One of the primary functions of NCOR1 is to act as a corepressor for various nuclear receptors, including thyroid hormone receptors (TRs), retinoic acid receptors (RARs), and peroxisome proliferator-activated receptors (PPARs). By recruiting histone deacetylases (HDACs) and other chromatin-modifying enzymes to target gene promoters, NCOR1 facilitates the formation of repressive chromatin structures, leading to transcriptional silencing. Moreover, NCOR1 is involved in...