AMN1 (Amnion Associated Transmembrane Protein 1): AMN1 is a gene that encodes a transmembrane protein associated with the amnion—the protective membrane surrounding the developing foetus. Although its precise function is not fully understood, research suggests it may play a role in the regulation of amniotic fluid and foetal development. Its significance in prenatal physiology and potential links to congenital disorders continue to be an area of active study.