GTF3A (General Transcription Factor IIIA) is a Cys2-His2 zinc-finger transcription factor that functions primarily in ribosomal RNA biogenesis and innate immunity. GTF3A binds the internal control region of 5S ribosomal RNA genes and is required for RNA polymerase III-dependent transcription of these genes 1. Beyond its classical rRNA function, GTF3A exhibits broader regulatory roles: it binds directly to RNA and regulates post-transcriptional processes including pre-mRNA splicing and polyadenylation 2. Notably, GTF3A controls transcription of RNA5SP141, an endogenous RIG-I agonist critical for antiviral innate immunity; loss-of-function GTF3A mutations impair anti-HSV-1 responses and predispose to herpes simplex encephalitis 3. In cancer biology, GTF3A is frequently upregulated in colorectal cancer tissues and promotes tumor progression by upregulating cystatin A and epithelial-mesenchymal transition markers 4. High GTF3A expression correlates with poor prognosis and is part of a prognostic 3-gene signature in colorectal cancer 56. GTF3A is located on chromosome 13.3-q13.1 1 and represents both a potential therapeutic target and prognostic biomarker for cancer management.