SOX8 is a transcription factor belonging to the SRY-box family that functions as a developmental regulator and plays emerging roles in disease pathogenesis. During embryonic development, SOX8 is expressed in multiple tissues including Sertoli cells, glial cells, and chondrocytes 1. SOX8 encodes a high-mobility-group domain protein capable of binding DNA consensus sequences 2 and activating transcription of target genes including anti-Müllerian hormone (AMH) through synergistic action with steroidogenic factor 1 2. Functionally, SOX8 exhibits substantial redundancy with related family members SOX9 and SOX10; knockout mice show no obvious developmental phenotype 2, though SOX8 and SOX10 jointly maintain myelin gene expression in oligodendrocytes 3. Beyond development, SOX8 demonstrates significant roles in adult tissue homeostasis and disease. In cancer, SOX8 is upregulated in multiple tumor types and associates with poor prognosis 4. SOX8 promotes chemoresistance in ovarian cancer through suppression of cell senescence and induction of glucose metabolism via the Aurora-A/SOX8/FOXK1 axis 5, and functions in the eEF2K/AURKA/SOX8 pathway in triple-negative breast cancer 6. In glioblastoma, downregulated SOX8 facilitates mesenchymal transition 7. Clinically, SOX8 mutations associate with reproductive anomalies including 46,XY disorders of sex development, male infertility, and primary ovarian insufficiency 8. Genetic variants link SOX8 to multiple sclerosis and familial essential tremor 1, suggesting therapeutic potential.