STON1-GTF2A1L is a readthrough transcript encoding a TFIIA homolog with testis-specific expression patterns. The gene was originally identified as ALF (TFIIA-alpha/beta-like factor), a transcription factor expressed almost exclusively in testis that can stabilize TBP-TATA interactions and restore transcription in vitro 1. In functional genomics studies, STON1-GTF2A1L showed overexpression in adipose tissue of women with polycystic ovary syndrome (PCOS), particularly in the LHCGR region, suggesting involvement in hormonal regulation and metabolic dysfunction 2. Additionally, genetic variants in the STON1-GTF2A1L/LHCGR/FSHR locus (rs4482537) were significantly associated with bilateral neovascular age-related macular degeneration (AMD) in East Asian populations, achieving genome-wide significance in meta-analysis (P = 2.61 × 10⁻⁹) 3. These findings indicate STON1-GTF2A1L has pleiotropic effects spanning reproductive endocrinology and ophthalmologic disease, though the molecular mechanisms linking this transcription factor to these diverse phenotypes remain incompletely characterized.