Aural Atresia, Congenital, also known as caa, is related to cerebral amyloid angiopathy, cst3-related and cerebral amyloid angiopathy, app-related. An important gene associated with Aural Atresia, Congenital is TSHZ1 (Teashirt Zinc Finger Homeobox 1). Affiliated tissues include olfactory bulb, and related phenotypes are conductive hearing impairment and atresia of the external auditory canal