Usher Syndrome, Type if, also known as usher syndrome type 1f, is related to rare genetic deafness and deafness, autosomal recessive 1a. An important gene associated with Usher Syndrome, Type if is PCDH15 (Protocadherin Related 15), and among its related pathways/superpathways are Olfactory Signaling Pathway and Sensory processing of sound. Affiliated tissues include retina and eye, and related phenotypes are congenital sensorineural hearing impairment and rod-cone dystrophy