RNA, U4 small nuclear 18, pseudogene (RNU4-18P)

**RNA, U4 small nuclear 18, pseudogene** (RNU4-18P) is classified as a *pseudogene* and is catalogued in gene databases such as GeneCards[1]. Pseudogenes are typically disabled genomic DNA sequences derived from functional genes but are not themselves functional; they do not code for functional proteins or RNAs and generally lack biological activity. There is no evidence in authoritative sources that RNU4-18P acts as a therapeutic or functional molecular target, nor are there any reported associations with disease, drugs, or physiological function. Instead, RNU4-18P is simply listed as a disabled or nonfunctional member of the **U4 small nuclear RNA** family, with no known role in cellular or disease processes[1]. **Key clarification:** The **functional gene** in the U4 small nuclear RNA family that has known biological and clinical significance is **RNU4-2** (RNA, U4 small nuclear 2), which is implicated in neurodevelopmental disorders[2][3][5][7]. **RNU4-18P** is not known to be involved in these processes and should not be used as a synonym for RNU4-2. **Summary of assessment:** - RNU4-18P is a *nonfunctional pseudogene* with no established molecular or therapeutic importance[1]. - If your intention was to refer to the **functional U4 small nuclear RNA** gene, you likely meant **RNU4-2**, not RNU4-18P. - No evidence supports its role as a biological or clinical target, nor any disease association, drug interaction, or mechanism of action. - It is **incorrect to treat RNU4-18P as an active target or receptor**. If you need data for the functional U4 snRNA gene, see entries for **RNU4-2** instead. **References for functional relevance:** - RNU4-18P: nonfunctional pseudogene with no active role[1]. - RNU4-2: functional snRNA, mutations linked to ReNU syndrome and spliceosomal function[2][3][5][7].

Other names

RNU4-18P