Capicua transcriptional repressor pseudogene 25 (CICP25)

Capicua transcriptional repressor pseudogene 25 (CICP25) is a processed or unprocessed pseudogene homologous to the capicua transcriptional repressor gene (CIC). It is annotated in human genome databases, such as GeneCards, as a non-functional gene segment without protein-coding capability[1]. While CIC is a functional transcriptional repressor involved in important cellular processes and disease states—particularly in the central nervous system and cancer progression—the CICP25 pseudogene does not encode a functional protein. Pseudogenes, including CICP25, may have roles in gene regulation at the DNA or RNA level (such as acting as decoys for regulatory RNA molecules), but there is no mechanism of action, drug targeting, or established biomarker application specific to CICP25[1][3][2][4]. CICP25 should not be confused with CIC, the functional capicua transcriptional repressor protein, which is a recognized transcription factor with documented biological and disease roles[2][4]. The pseudogene status makes CICP25 unsuitable for therapeutic targeting, drug development, or classic molecular classification beyond its nature as a pseudogene[1][3].