Bartter Syndrome, Type 4a, Neonatal, with Sensorineural Deafness, also known as sensorineural deafness with mild renal dysfunction, is related to bartter syndrome, type 4b, neonatal, with sensorineural deafness and hypokalemia, and has symptoms including polyuria An important gene associated with Bartter Syndrome, Type 4a, Neonatal, with Sensorineural Deafness is BSND (Barttin CLCNK Type Accessory Subunit Beta), and among its related pathways/superpathways are Ion channel transport and Immune response Lectin induced complement pathway. Affiliated tissues include kidney and salivary gland, and related phenotypes are sensorineural hearing impairment and polydipsia