Indeed, for two of those five patients it was possible to identify the molecular cause of hearing loss: in one, a carrier of the variant GJB2:c.358_360delGAG, the cause was found when analyzing CNVs; in the second, a carrier of the GJB2:c.313_326delAAGTTCATCAAGGG variant, the cause was found through whole exome sequencing. Here, GJB2 is linked to hearing loss disorder.