SLC26A4 and autosomal recessive nonsyndromic hearing loss 4: Mutations in the SLC26A4 gene (NM_000441) were found to be causative of two autosomal recessive disorders, Pendred syndrome (OMIM # 274600) and one of the forms of non-syndromic autosomal recessive hearing loss (DFNB4; #600791) [4].