X (inactive)-specific transcript (XIST)

X (inactive)-specific transcript (XIST) is a well-studied long non-coding RNA that plays a crucial role in the process of X chromosome inactivation in female mammals[5][7][3]. XIST is expressed from the inactive X chromosome and acts through coating the X chromosome from which it is transcribed, recruiting silencing factors, and establishing epigenetic modifications that lead to transcriptional silencing. This mechanism ensures dosage compensation between sexes by silencing one of the two X chromosomes in females. XIST does not code for a protein and functions entirely at the RNA level. While XIST RNA dysregulation has been observed in several disease contexts, especially those involving sex chromosome abnormalities and cancer, XIST itself is generally not considered a classic therapeutic target such as a receptor, enzyme, or transporter[5][7][3]. If structured data extraction or drug/gene-disease relationship expansion is needed, further queries in specialized databases (e.g., GeneCards, InterPro, UniProt) may provide additional details[3][6]. However, currently available evidence supports that ENSG00000274655/XIST is a regulatory RNA gene and not a direct therapeutic target.

Other names

XISTX-inactive specific transcriptX-inactivation specific transcriptXIST RNA

not a drug target; mechanism relates to functional RNA-mediated chromatin modification