IFNA13 encodes interferon-alpha 13, a type I interferon produced by macrophages with antiviral properties 1. The protein functions by stimulating production of protein kinase and oligoadenylate synthetase, key effectors of antiviral immunity. IFNA13 exhibits genetic polymorphism, with variants like rs653778 and sequence modifications detected in both normal and tumor tissues 12. Functionally, IFNA13 participates in immune regulation across multiple disease contexts. IFNA13 variants associate with ankylosing spondylitis-associated uveitis susceptibility in Chinese populations, with the rs653778 T allele showing significantly elevated frequency in affected individuals (OR=2.028, P=1.5×10⁻⁹) 3. In colorectal cancer, interferon pathway SNPs including IFNA13 variants correlate with cancer risk and survival outcomes 4. IFNA13 is dysregulated in dilated cardiomyopathy, showing 4-fold downregulation in affected hearts 5. Recent proteomic studies identify IFNA13 among cytokine signatures distinguishing pediatric inflammatory bowel disease subtypes with 96.2% classification accuracy 6, and computational analysis suggests IFNA13 involvement in cytokine release syndrome mechanisms during CAR-T immunotherapy 7. These findings indicate IFNA13 functions broadly in inflammatory and immune-mediated pathologies beyond classic antiviral responses.