The first two such deletions identified, del(GJB6-D13S1830) (spanning 309 kb) and del(GJB6-D13S1854) (spanning 232 kb), affected the GJB6 locus, immediately telomeric to GJB2, leading to the assumption that GJB6 was also involved in non-syndromic hearing loss in a digenic fashion with GJB2 [6,7]. Here, GJB2 is linked to hearing loss disorder.