GJB2 and sensorineural hearing loss disorder: While GJB2 and TMPRSS3 are associated with non-syndromic SNHL, MYO7 A and SLC26 A4 are linked to both non-syndromic (DFNA11/DFNB2 and DFNB4) and syndromic SNHL (Usher syndrome type 1b and Pendred syndrome).