25 del Castillo del Castillo I I Moreno-Pelayo Moreno-Pelayo MA MA del Castillo del Castillo FJ FJ Brownstein Brownstein Z Z Prevalence and Evolutionary Origins of the del(GJB6-D13S1830) Mutation in the DFNB1 Locus in Hearing-Impaired Subjects: a Multicenter Study Prevalence and Evolutionary Origins of the del(GJB6-D13S1830) Mutation in the DFNB1 Locus in Hearing-Impaired Subjects: a Multicenter Study Am J Hum Genet. Here, GJB2 is linked to Hearing impairment.