Cx26, also known as Connexin 26, is a protein that forms channels in cell membranes, allowing the passage of ions and small molecules between cells. It plays a crucial role in cell communication and is essential for maintaining the function of various tissues, particularly in the inner ear and skin. Mutations in the gene that encodes Cx26 can lead to health issues, most notably hearing loss. This condition is one of the most common genetic causes of deafness, affecting individuals worldwide. Understanding Cx26 is important for developing potential treatments for related disorders.