ZNF74 is a zinc finger protein that functions as a multifunctional regulator of both transcription and RNA metabolism. The protein exists in multiple isoforms generated through alternative promoter usage and splicing, with ZNF74-II containing an intact KRAB domain showing strong transcriptional repressor activity, while ZNF74-I lacks transcriptional activity 1. ZNF74 demonstrates RNA-binding specificity for poly(U) and poly(G) homopolymers and associates tightly with the nuclear matrix, suggesting a role in RNA processing 2. The protein exhibits distinct subcellular localization patterns depending on the isoform: ZNF74-I colocalizes with splicing factors in nuclear speckles, while the transcriptionally active ZNF74-II shows diffuse nuclear distribution 1. ZNF74 is hemizygously deleted in DiGeorge syndrome patients and shows restricted developmental expression in neural crest-derived tissues and foregut endoderm epithelia, particularly in cardiovascular structures affected in this disorder 34. The gene has clinical relevance beyond developmental disorders, as polymorphisms are associated with age-at-onset in schizophrenia 5, and altered expression occurs in familial prostate cancers 6. These findings establish ZNF74 as a critical developmental regulator linking transcriptional control with RNA metabolism.