PATZ1 is a POZ/BTB zinc finger transcription factor that functions as a transcriptional repressor with roles in development, metabolism, and disease. As a DNA-binding protein, it regulates transcription of target genes through promoter-level interactions with the transcriptional machinery, including direct binding to regulatory regions of key developmental and metabolic factors. In adipocyte differentiation, PATZ1 promotes adipogenesis by controlling promoter regulatory loci of adipogenic transcription factors through protein-protein interactions with GTF2I 1. During development, PATZ1 establishes chr22 boundaries at Hox clusters in differentiating motor neurons and the developing skeleton, working with cohesin to implement positional identity 2. PATZ1 is essential for spermatogenesis; male knockout mice are infertile with depleted spermatocytes and complete absence of mature spermatids 3. The gene is implicated in multiple human malignancies, including brain tumors. PATZ1 fusions (MN1:PATZ1 and EWSR1:PATZ1) define a molecularly distinct class of pediatric neuroepithelial tumors with intermediate prognosis compared to conventional glioblastoma 4. In glioblastoma, PATZ1 functions in the NF-κB signaling pathway to regulate microglia recruitment; dual targeting of this axis combined with anti-PD-1 therapy produces complete tumor regression in over 60% of PTEN-deficient models 5. Dysregulated PATZ1 expression is associated with various solid tumors and metabolic disorders.