CDH23 (Cadherin-related 23): CDH23 encodes a protein that belongs to the cadherin superfamily, recognised for its role in cell-to-cell adhesion. CDH23 is particularly crucial for the structure and function of the hair cells in the inner ear, which are responsible for hearing and balance. Mutations in CDH23 are linked to Usher syndrome and non-syndromic hearing loss, emphasising its importance for sensory function. Research on CDH23 centres on understanding hearing mechanisms and developing treatments for related hearing impairments.