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Genetic hearing disorders encompass a diverse group of inherited conditions resulting from mutations in genes critical for auditory system development and function. These disorders account for approximately 50–60% of childhood hearing loss, with over 500 genes identified as essential for mammalian hearing.

Genetic hearing loss is broadly classified into syndromic (30%) and non-syndromic (70%) types. Syndromic forms include hearing loss alongside other clinical features—examples are Usher syndrome (hearing loss plus retinitis pigmentosa), Waardenburg syndrome (hearing loss with pigmentary changes), Pendred syndrome (hearing loss with thyroid goiter), and Jervell and Lange-Nielsen syndrome (hearing loss with cardiac arrhythmias). Non-syndromic hearing loss affects only the ear, with autosomal recessive inheritance being most common, particularly GJB2 (connexon 26) mutations.

Onset ranges from congenital to progressive hearing loss appearing later in childhood or adulthood. Inheritance patterns include autosomal recessive, autosomal dominant, X-linked, and mitochondrial. Early genetic testing enables accurate diagnosis, informs family counseling, and guides intervention choices like hearing aids, cochlear implants, or gene therapy trials.

Understanding the genetic basis helps clinicians predict progression, identify associated conditions, and provide personalized management. As research advances, targeted therapies and potential gene-editing treatments offer hope for restoring function in specific genetic hearing disorders.