LSM11 is a critical component of the U7 small nuclear ribonucleoprotein (snRNP) complex that plays an essential role in histone 3'-end pre-mRNA processing 1. The protein specifically binds to the Sm-binding site of U7 snRNA and interacts with FLASH protein to recruit the endonuclease CPSF73, forming the catalytically active holo U7 snRNP complex 23. This mechanism is crucial for proper 3'-end cleavage of replication-dependent histone pre-mRNAs, which differs from typical mRNA polyadenylation 4. LSM11 contains dual binding sites that interact with the zinc finger processing factor ZFP100, enhancing histone pre-mRNA processing efficiency 5. Disease-wise, biallelic mutations in LSM11 cause Aicardi-Goutières syndrome type 8, a rare autoimmune disorder characterized by inappropriate type I interferon activation 61. These mutations disrupt histone pre-mRNA processing, leading to altered linker histone stoichiometry and enhanced cGAS-STING pathway activation 1. Clinically, LSM11 has been identified as essential for cancer stem cell growth in pediatric high-grade gliomas, suggesting potential therapeutic targeting opportunities 7. Additionally, LSM11 is regulated by miR146a during chondrogenesis of mesenchymal stem cells 8.