Congenital Deafness with Labyrinthine Aplasia, Microtia, and Microdontia (LAMM) is a genetic disease that affects development of the ears and teeth. This condition is characterized by profound bilateral congenital sensorineural deafness associated with inner ear anomalies, microtia type I that is typically bilateral, and microdontia. The diagnosis is based on clinical findings, and can be confirmed by testing the mutations of FGF3 gene.