ZNF18 is a zinc finger transcription factor containing five C2H2-type zinc finger motifs, a KRAB box, and a SCAN-box domain that functions as a DNA-binding transcription factor regulating RNA polymerase II-mediated gene expression 1. The protein demonstrates high sequence conservation across mammals (77-92% identity between human, mouse, and rat orthologs) 2. ZNF18 exhibits dynamic developmental expression, particularly abundant in embryonic heart tissue at E9.0-E10.5, suggesting roles in cardiac development 1. Recent structural studies reveal that ZNF18's five zinc finger domains specifically coordinate Zn2+ with high affinity (Kd ≤18 nM) and directly bind cis-acting promoter elements to regulate cell cycle genes (CDK1 via the cell cycle-dependent element CGCGG) and neuronal development genes (BRN2 and dopamine-related pathways) 3. Clinically, ZNF18 has been implicated in multiple diseases: it appears as a recessive mutation candidate in autism spectrum disorder associated with neuronal depolarization-regulated transcription 4, and is located within a frequently deleted chr17 region (17p13.1-p12) in esophageal squamous cell carcinomas, suggesting potential tumor suppressor function 5. Additionally, ZNF18 was identified as a prognostic biomarker for clear cell renal cell carcinoma survival outcomes 6.