Among the genes involved in non-syndromic autosomal dominant SNHL is CCDC50 (MIM 611051) (Vazza et al., 2003; Modamio-Høybjør et al., 2007), which maps to chromosome 3q28-29 within the critical interval of the autosomal dominant deafness locus DFNA44 (Modamio-Høybjør et al., 2003). Here, CCDC50 is linked to autosomal dominant nonsyndromic hearing loss.