Considering that GJB2, SLC26A4, and CDH23 are the 3 most common causative genes of prelingual SNHL in Koreans [40] and that the founder alleles of these 3 genes are all included, our kit alone is expected to cover a substantial portion of prelingual severe-to-profound genetic SNHL in Koreans. This evidence concerns the gene GJB2 and sensorineural hearing loss disorder.